:Product: 3-Day Forecast
:Issued: 2025 May 06 0030 UTC
# Prepared by the U.S. Dept. of Commerce, NOAA, Space Weather Prediction Center
#
A. NOAA Geomagnetic Activity Observation and Forecast

The greatest observed 3 hr Kp over the past 24 hours was 5 (NOAA Scale
G1).
The greatest expected 3 hr Kp for May 06-May 08 2025 is 5.00 (NOAA Scale
G1).

NOAA Kp index breakdown May 06-May 08 2025

May 06 May 07 May 08
00-03UT 5.00 (G1) 3.67 2.67
03-06UT 4.33 4.00 2.33
06-09UT 3.67 3.00 2.67
09-12UT 3.00 2.33 2.33
12-15UT 2.67 2.67 2.00
15-18UT 2.33 2.00 2.00
18-21UT 2.67 3.00 2.33
21-00UT 3.00 2.33 2.67

Rationale: The geomagnetic field is expected to reach G1 (Minor) storm
levels on 06 May, and active levels on 07 May, due to sustained negative polarity CH HSS influences.

B. NOAA Solar Radiation Activity Observation and Forecast

Solar radiation, as observed by NOAA GOES-18 over the past 24 hours, was
below S-scale storm level thresholds.

Solar Radiation Storm Forecast for May 06-May 08 2025

May 06 May 07 May 08
S1 or greater 5% 5% 5%

Rationale: No S1 (Minor) or greater solar radiation storms are expected.
No significant active region activity favorable for radiation storm
production is forecast.

C. NOAA Radio Blackout Activity and Forecast

No radio blackouts were observed over the past 24 hours.

Radio Blackout Forecast for May 06-May 08 2025

May 06 May 07 May 08
R1-R2 45% 45% 45%
R3 or greater 5% 5% 5%

Rationale: Solar activity is expected to be low with a chance for
M-class (R1-R2/Minor-Moderate) flare activity through 08 May.



--- MBSE BBS v1.1.1 (Linux-x86_64)
* Origin: Outpost BBS * Johnson City, TN (1:18/200)

:Product: 3-Day Forecast
:Issued: 2025 May 09 0030 UTC
# Prepared by the U.S. Dept. of Commerce, NOAA, Space Weather Prediction Center
#
A. NOAA Geomagnetic Activity Observation and Forecast

The greatest observed 3 hr Kp over the past 24 hours was 4 (below NOAA
Scale levels).
The greatest expected 3 hr Kp for May 09-May 11 2025 is 4.67 (NOAA Scale
G1).

NOAA Kp index breakdown May 09-May 11 2025

May 09 May 10 May 11
00-03UT 3.33 3.67 3.00
03-06UT 3.67 3.00 3.67
06-09UT 3.67 2.67 2.67
09-12UT 3.67 2.00 2.00
12-15UT 3.67 2.67 2.00
15-18UT 4.00 2.00 2.67
18-21UT 4.67 (G1) 2.67 2.67
21-00UT 4.00 2.67 2.67

Rationale: G1 (Minor) conditions are likely on 09 May due to the onset
of another negative polarity CH HSS coupled with a possible glancing
blow CME from 05 May.

B. NOAA Solar Radiation Activity Observation and Forecast

Solar radiation, as observed by NOAA GOES-18 over the past 24 hours, was
below S-scale storm level thresholds.

Solar Radiation Storm Forecast for May 09-May 11 2025

May 09 May 10 May 11
S1 or greater 5% 5% 5%

Rationale: No S1 (Minor) or greater solar radiation storms are expected.
No significant active region activity favorable for radiation storm
production is forecast.

C. NOAA Radio Blackout Activity and Forecast

No radio blackouts were observed over the past 24 hours.

Radio Blackout Forecast for May 09-May 11 2025

May 09 May 10 May 11
R1-R2 40% 40% 40%
R3 or greater 5% 5% 5%

Rationale: There is a chance for R1-R2 (Minor-Moderate) radio blackouts
over 09-11 May.



--- MBSE BBS v1.1.1 (Linux-x86_64)
* Origin: Outpost BBS * Johnson City, TN (1:18/200)

:Product: 3-Day Forecast
:Issued: 2025 May 12 0030 UTC
# Prepared by the U.S. Dept. of Commerce, NOAA, Space Weather Prediction Center
#
A. NOAA Geomagnetic Activity Observation and Forecast

The greatest observed 3 hr Kp over the past 24 hours was 5 (NOAA Scale
G1).
The greatest expected 3 hr Kp for May 12-May 14 2025 is 4.67 (NOAA Scale
G1).

NOAA Kp index breakdown May 12-May 14 2025

May 12 May 13 May 14
00-03UT 4.00 2.67 2.33
03-06UT 4.67 (G1) 3.67 2.67
06-09UT 3.33 2.67 2.33
09-12UT 3.00 2.67 2.33
12-15UT 2.67 1.67 2.67
15-18UT 3.67 1.67 2.33
18-21UT 2.67 3.00 2.33
21-00UT 2.67 2.67 2.00

Rationale: An isolated period of G1 (Minor) conditions are expected on
12 May as negative polarity CH HSS influences linger yet diminish.

B. NOAA Solar Radiation Activity Observation and Forecast

Solar radiation, as observed by NOAA GOES-18 over the past 24 hours, was
below S-scale storm level thresholds.

Solar Radiation Storm Forecast for May 12-May 14 2025

May 12 May 13 May 14
S1 or greater 1% 1% 1%

Rationale: No S1 (Minor) or greater solar radiation storms are expected.
No significant active region activity favorable for radiation storm
production is forecast.

C. NOAA Radio Blackout Activity and Forecast

Radio blackouts reaching the R1 levels were observed over the past 24
hours. The largest was at May 12 2025 0001 UTC.

Radio Blackout Forecast for May 12-May 14 2025

May 12 May 13 May 14
R1-R2 1% 1% 1%
R3 or greater 1% 1% 1%

Rationale: No R1 (Minor) or greater radio blackouts are expected. No significant active region flare activity is forecast.



--- MBSE BBS v1.1.1 (Linux-x86_64)
* Origin: Outpost BBS * Johnson City, TN (1:18/200)

:Product: 3-Day Forecast
:Issued: 2025 May 15 0030 UTC
# Prepared by the U.S. Dept. of Commerce, NOAA, Space Weather Prediction Center
#
A. NOAA Geomagnetic Activity Observation and Forecast

The greatest observed 3 hr Kp over the past 24 hours was 4 (below NOAA
Scale levels).
The greatest expected 3 hr Kp for May 15-May 17 2025 is 3.67 (below NOAA
Scale levels).

NOAA Kp index breakdown May 15-May 17 2025

May 15 May 16 May 17
00-03UT 2.33 2.33 3.33
03-06UT 2.33 2.33 2.00
06-09UT 2.67 2.33 2.00
09-12UT 2.67 1.67 3.00
12-15UT 2.00 2.33 3.00
15-18UT 2.67 2.33 3.67
18-21UT 3.67 2.00 3.33
21-00UT 3.00 2.33 3.33

Rationale: No G1 (Minor) or greater geomagnetic storms are expected. No significant transient or recurrent solar wind features are forecast.

B. NOAA Solar Radiation Activity Observation and Forecast

Solar radiation, as observed by NOAA GOES-18 over the past 24 hours, was
below S-scale storm level thresholds.

Solar Radiation Storm Forecast for May 15-May 17 2025

May 15 May 16 May 17
S1 or greater 10% 5% 5%

Rationale: No S1 (Minor) or greater solar radiation storms are expected.
No significant active region activity favorable for radiation storm
production is forecast.

C. NOAA Radio Blackout Activity and Forecast

Radio blackouts reaching the R3 levels were observed over the past 24
hours. The largest was at May 14 2025 0825 UTC.

Radio Blackout Forecast for May 15-May 17 2025

May 15 May 16 May 17
R1-R2 75% 75% 75%
R3 or greater 30% 30% 30%

Rationale: Given the magnetic complexity of Region 4087, theres a 75%
chance that M-Class (R1-R2, Minor-Moderate) level flare activity will
occur through 17 May with a 30% chance for X-Class (R3-Strong) levels
during the same time.



--- MBSE BBS v1.1.1 (Linux-x86_64)
* Origin: Outpost BBS * Johnson City, TN (1:18/200)

:Product: 3-Day Forecast
:Issued: 2025 May 18 0030 UTC
# Prepared by the U.S. Dept. of Commerce, NOAA, Space Weather Prediction Center
#
A. NOAA Geomagnetic Activity Observation and Forecast

The greatest observed 3 hr Kp over the past 24 hours was 6 (NOAA Scale
G2).
The greatest expected 3 hr Kp for May 18-May 20 2025 is 5.00 (NOAA Scale
G1).

NOAA Kp index breakdown May 18-May 20 2025

May 18 May 19 May 20
00-03UT 3.67 4.67 (G1) 3.67
03-06UT 3.67 5.00 (G1) 2.67
06-09UT 4.00 4.67 (G1) 3.00
09-12UT 4.67 (G1) 4.33 2.67
12-15UT 3.67 3.67 3.00
15-18UT 4.33 4.00 3.33
18-21UT 4.67 (G1) 4.00 3.33
21-00UT 4.67 (G1) 3.67 3.00

Rationale: G1 (Minor) geomagnetic storms are expected on 18-19 May due
to influence form a positive polarity CH HSS.

B. NOAA Solar Radiation Activity Observation and Forecast

Solar radiation, as observed by NOAA GOES-18 over the past 24 hours, was
below S-scale storm level thresholds.

Solar Radiation Storm Forecast for May 18-May 20 2025

May 18 May 19 May 20
S1 or greater 5% 5% 5%

Rationale: No S1 (Minor) or greater solar radiation storms are expected.
No significant active region activity favorable for radiation storm
production is forecast.

C. NOAA Radio Blackout Activity and Forecast

No radio blackouts were observed over the past 24 hours.

Radio Blackout Forecast for May 18-May 20 2025

May 18 May 19 May 20
R1-R2 35% 35% 35%
R3 or greater 10% 10% 10%

Rationale: There exists a chance for R1-R2 (Minor-Moderate) radio
blackouts, with a slight chance for R3 (Strong), over 18-20 May.



--- MBSE BBS v1.1.1 (Linux-x86_64)
* Origin: Outpost BBS * Johnson City, TN (1:18/200)

:Product: 3-Day Forecast
:Issued: 2025 May 21 0030 UTC
# Prepared by the U.S. Dept. of Commerce, NOAA, Space Weather Prediction Center
#
A. NOAA Geomagnetic Activity Observation and Forecast

The greatest observed 3 hr Kp over the past 24 hours was 3 (below NOAA
Scale levels).
The greatest expected 3 hr Kp for May 21-May 23 2025 is 4.00 (below NOAA
Scale levels).

NOAA Kp index breakdown May 21-May 23 2025

May 21 May 22 May 23
00-03UT 2.67 2.67 2.00
03-06UT 3.33 2.00 2.00
06-09UT 2.67 2.33 1.67
09-12UT 2.00 2.33 2.67
12-15UT 3.33 2.33 2.67
15-18UT 3.00 2.33 4.00
18-21UT 1.67 2.33 2.67
21-00UT 2.00 2.67 2.67

Rationale: No G1 (Minor) or greater geomagnetic storms are expected.
Unsettled to active levels are expected through 23 May due to persistent
CH HSS activity.

B. NOAA Solar Radiation Activity Observation and Forecast

Solar radiation, as observed by NOAA GOES-18 over the past 24 hours, was
below S-scale storm level thresholds.

Solar Radiation Storm Forecast for May 21-May 23 2025

May 21 May 22 May 23
S1 or greater 1% 1% 1%

Rationale: No S1 (Minor) or greater solar radiation storms are expected.
No significant active region activity favorable for radiation storm
production is forecast.

C. NOAA Radio Blackout Activity and Forecast

No radio blackouts were observed over the past 24 hours.

Radio Blackout Forecast for May 21-May 23 2025

May 21 May 22 May 23
R1-R2 35% 35% 35%
R3 or greater 5% 5% 5%

Rationale: Solar flare activity is expected to remain low as most
regions on the disk are fairly simple in their magnetic complexities.
There remains a 35% chance for R1-R2 (Minor-Moderate) and a 5% chance
for R3 (Strong) activity through 23 May.



--- MBSE BBS v1.1.1 (Linux-x86_64)
* Origin: Outpost BBS * Johnson City, TN (1:18/200)

:Product: 3-Day Forecast
:Issued: 2025 May 24 0030 UTC
# Prepared by the U.S. Dept. of Commerce, NOAA, Space Weather Prediction Center
#
A. NOAA Geomagnetic Activity Observation and Forecast

The greatest observed 3 hr Kp over the past 24 hours was 2 (below NOAA
Scale levels).
The greatest expected 3 hr Kp for May 24-May 26 2025 is 3.67 (below NOAA
Scale levels).

NOAA Kp index breakdown May 24-May 26 2025

May 24 May 25 May 26
00-03UT 2.33 2.00 2.00
03-06UT 2.67 2.33 2.33
06-09UT 3.00 3.00 3.00
09-12UT 3.67 3.67 3.67
12-15UT 3.00 3.00 3.00
15-18UT 2.33 2.33 2.33
18-21UT 1.67 2.33 2.33
21-00UT 1.67 1.67 1.67

Rationale: No G1 (Minor) or greater geomagnetic storms are expected.

B. NOAA Solar Radiation Activity Observation and Forecast

Solar radiation, as observed by NOAA GOES-18 over the past 24 hours, was
below S-scale storm level thresholds.

Solar Radiation Storm Forecast for May 24-May 26 2025

May 24 May 25 May 26
S1 or greater 1% 1% 1%

Rationale: No S1 (Minor) or greater solar radiation storms are expected.
No significant active region activity favorable for radiation storm
production is forecast.

C. NOAA Radio Blackout Activity and Forecast

No radio blackouts were observed over the past 24 hours.

Radio Blackout Forecast for May 24-May 26 2025

May 24 May 25 May 26
R1-R2 25% 25% 25%
R3 or greater 5% 5% 5%

Rationale: There exists a chance for R1-R2 (Minor-Moderate) radio
blackouts over 24-26 May.



--- MBSE BBS v1.1.1 (Linux-x86_64)
* Origin: Outpost BBS * Johnson City, TN (1:18/200)

:Product: 3-Day Forecast
:Issued: 2025 May 27 0030 UTC
# Prepared by the U.S. Dept. of Commerce, NOAA, Space Weather Prediction Center
#
A. NOAA Geomagnetic Activity Observation and Forecast

The greatest observed 3 hr Kp over the past 24 hours was 3 (below NOAA
Scale levels).
The greatest expected 3 hr Kp for May 27-May 29 2025 is 5.00 (NOAA Scale
G1).

NOAA Kp index breakdown May 27-May 29 2025

May 27 May 28 May 29
00-03UT 2.00 1.67 4.00
03-06UT 2.67 3.67 4.00
06-09UT 2.67 5.00 (G1) 3.33
09-12UT 1.67 4.67 (G1) 3.00
12-15UT 1.67 3.67 2.33
15-18UT 1.00 3.00 2.00
18-21UT 1.00 3.33 2.00
21-00UT 2.67 4.00 3.33

Rationale: G1 (Minor) or greater geomagnetic storms are likely on 28 May
due to CH HSS onset. No significant transient or recurrent solar wind
features are forecast.

B. NOAA Solar Radiation Activity Observation and Forecast

Solar radiation, as observed by NOAA GOES-18 over the past 24 hours, was
below S-scale storm level thresholds.

Solar Radiation Storm Forecast for May 27-May 29 2025

May 27 May 28 May 29
S1 or greater 15% 15% 15%

Rationale: There is a slight chance for the greater than 10 MeV proton
flux to reach S1 (Minor) levels over 27-29 May.

C. NOAA Radio Blackout Activity and Forecast

Radio blackouts reaching the R1 levels were observed over the past 24
hours. The largest was at May 26 2025 1306 UTC.

Radio Blackout Forecast for May 27-May 29 2025

May 27 May 28 May 29
R1-R2 70% 70% 70%
R3 or greater 30% 30% 30%

Rationale: R1-R2 (Minor-Moderate) radio blackouts are likely, with a
chance for isolated R3 (Strong or greater) events over 27-29 May.



--- MBSE BBS v1.1.1 (Linux-x86_64)
* Origin: Outpost BBS * Johnson City, TN (1:18/200)

:Product: 3-Day Forecast
:Issued: 2025 May 30 0030 UTC
# Prepared by the U.S. Dept. of Commerce, NOAA, Space Weather Prediction Center
#
A. NOAA Geomagnetic Activity Observation and Forecast

The greatest observed 3 hr Kp over the past 24 hours was 7 (NOAA Scale
G3).
The greatest expected 3 hr Kp for May 30-Jun 01 2025 is 5.67 (NOAA Scale
G2).

NOAA Kp index breakdown May 30-Jun 01 2025

May 30 May 31 Jun 01
00-03UT 5.00 (G1) 4.67 (G1) 4.00
03-06UT 5.67 (G2) 4.33 4.67 (G1)
06-09UT 5.67 (G2) 4.00 4.00
09-12UT 5.00 (G1) 3.33 3.67
12-15UT 3.00 3.00 2.67
15-18UT 3.33 2.33 2.00
18-21UT 3.33 2.33 2.00
21-00UT 3.67 4.00 3.33

Rationale: G1-G2 (Minor-Moderate) geomagnetic storms are expected on 30
May due to influence from a negative polarity coronal hole. G1 (Minor) conditions are again likely on 31 May - 01 Jun due to waning coronal
hole effects.

B. NOAA Solar Radiation Activity Observation and Forecast

Solar radiation, as observed by NOAA GOES-18 over the past 24 hours, was
below S-scale storm level thresholds.

Solar Radiation Storm Forecast for May 30-Jun 01 2025

May 30 May 31 Jun 01
S1 or greater 10% 10% 10%

Rationale: There is a slight chance for S1 (Minor) or greater solar
radiation storms over 30 May - 01 Jun.

C. NOAA Radio Blackout Activity and Forecast

No radio blackouts were observed over the past 24 hours.

Radio Blackout Forecast for May 30-Jun 01 2025

May 30 May 31 Jun 01
R1-R2 50% 50% 50%
R3 or greater 10% 10% 10%

Rationale: There is a chance for R1-R2 (Minor-Moderate) radio blackouts,
with a slight chance for R3 (Strong), over 30 May - 01 Jun.



--- MBSE BBS v1.1.1 (Linux-x86_64)
* Origin: Outpost BBS * Johnson City, TN (1:18/200)

:Product: 3-Day Forecast
:Issued: 2025 Jun 02 0030 UTC
# Prepared by the U.S. Dept. of Commerce, NOAA, Space Weather Prediction Center
#
A. NOAA Geomagnetic Activity Observation and Forecast

The greatest observed 3 hr Kp over the past 24 hours was 8 (NOAA Scale
G4).
The greatest expected 3 hr Kp for Jun 02-Jun 04 2025 is 7.67 (NOAA Scale
G4).

NOAA Kp index breakdown Jun 02-Jun 04 2025

Jun 02 Jun 03 Jun 04
00-03UT 7.00 (G3) 4.33 4.00
03-06UT 7.67 (G4) 5.00 (G1) 4.00
06-09UT 6.67 (G3) 4.67 (G1) 3.33
09-12UT 6.33 (G2) 4.67 (G1) 3.00
12-15UT 5.00 (G1) 4.67 (G1) 3.00
15-18UT 4.67 (G1) 4.33 3.33
18-21UT 5.33 (G1) 4.00 3.00
21-00UT 4.33 4.00 2.67

Rationale: UP to G4 (Severe) geomagnetic storms are likely on 02 Jun
due to effects from a CME that left the Sun on 31 May. G1-G2
(Minor-Moderate) geomagnetic storms are likely on 03 Jun due to coronal
hole influence.

B. NOAA Solar Radiation Activity Observation and Forecast

Solar radiation, as observed by NOAA GOES-18 over the past 24 hours, was
above S-scale storm level thresholds.

Solar Radiation Storm Forecast for Jun 02-Jun 04 2025

Jun 02 Jun 03 Jun 04
S1 or greater 99% 75% 60%

Rationale: S1-S2 (Minor-Moderate) solar radiation storms are likely
persist over 02-03 Jun becoming likely on 04 Jun.

C. NOAA Radio Blackout Activity and Forecast

No radio blackouts were observed over the past 24 hours.

Radio Blackout Forecast for Jun 02-Jun 04 2025

Jun 02 Jun 03 Jun 04
R1-R2 65% 65% 65%
R3 or greater 15% 15% 15%

Rationale: R1-R2 (Minor-Moderate) radio blackouts are likely, with a
slight chance for R3 (Strong), over 02-04 Jun.



--- MBSE BBS v1.1.1 (Linux-x86_64)
* Origin: Outpost BBS * Johnson City, TN (1:18/200)

:Product: 3-Day Forecast
:Issued: 2025 Jun 05 0030 UTC
# Prepared by the U.S. Dept. of Commerce, NOAA, Space Weather Prediction Center
#
A. NOAA Geomagnetic Activity Observation and Forecast

The greatest observed 3 hr Kp over the past 24 hours was 5 (NOAA Scale
G1).
The greatest expected 3 hr Kp for Jun 05-Jun 07 2025 is 5.67 (NOAA Scale
G2).

NOAA Kp index breakdown Jun 05-Jun 07 2025

Jun 05 Jun 06 Jun 07
00-03UT 4.67 (G1) 3.33 3.33
03-06UT 5.67 (G2) 4.00 3.67
06-09UT 4.67 (G1) 3.67 3.00
09-12UT 4.00 3.00 2.33
12-15UT 3.33 3.00 2.00
15-18UT 3.00 2.00 3.00
18-21UT 4.00 2.00 3.67
21-00UT 4.00 2.67 4.67 (G1)

Rationale: G1 to G2 (Minor-Moderate) geomagnetic storming is likely on
05 Jun due to waning CME and CH HSS influences. G1 (Minor) geomagnetic
storming is likely again on 07 Jun due to CME influences from the 04 Jun filament eruption.

B. NOAA Solar Radiation Activity Observation and Forecast

Solar radiation, as observed by NOAA GOES-18 over the past 24 hours, was
below S-scale storm level thresholds.

Solar Radiation Storm Forecast for Jun 05-Jun 07 2025

Jun 05 Jun 06 Jun 07
S1 or greater 10% 10% 10%

Rationale: A slight chance for S1 (Minor) solar radiation storms will
persist through 07 Jun given the flare potential and history of AR 4100
in particular.

C. NOAA Radio Blackout Activity and Forecast

Radio blackouts reaching the R1 levels were observed over the past 24
hours. The largest was at Jun 04 2025 2328 UTC.

Radio Blackout Forecast for Jun 05-Jun 07 2025

Jun 05 Jun 06 Jun 07
R1-R2 45% 45% 45%
R3 or greater 10% 10% 10%

Rationale: A chance for R1-2 (Minor-Moderate) radio blackouts, with a
slight chance for an isolated R3 (Strong) event, will persist through 07
Jun.



--- MBSE BBS v1.1.1 (Linux-x86_64)
* Origin: Outpost BBS * Johnson City, TN (1:18/200)

:Product: 3-Day Forecast
:Issued: 2025 Jun 08 0030 UTC
# Prepared by the U.S. Dept. of Commerce, NOAA, Space Weather Prediction Center
#
A. NOAA Geomagnetic Activity Observation and Forecast

The greatest observed 3 hr Kp over the past 24 hours was 5 (NOAA Scale
G1).
The greatest expected 3 hr Kp for Jun 08-Jun 10 2025 is 5.00 (NOAA Scale
G1).

NOAA Kp index breakdown Jun 08-Jun 10 2025

Jun 08 Jun 09 Jun 10
00-03UT 4.67 (G1) 4.00 3.67
03-06UT 4.00 4.00 3.00
06-09UT 3.33 5.00 (G1) 2.67
09-12UT 3.67 3.67 2.33
12-15UT 2.33 3.33 2.00
15-18UT 2.67 2.33 2.33
18-21UT 3.00 2.67 2.33
21-00UT 3.00 3.00 2.33

Rationale: G1 (Minor) geomagnetic storms are likely on 08-09 Jun due to transient influence.

B. NOAA Solar Radiation Activity Observation and Forecast

Solar radiation, as observed by NOAA GOES-18 over the past 24 hours, was
below S-scale storm level thresholds.

Solar Radiation Storm Forecast for Jun 08-Jun 10 2025

Jun 08 Jun 09 Jun 10
S1 or greater 5% 5% 5%

Rationale: No S1 (Minor) or greater solar radiation storms are expected.
No significant active region activity favorable for radiation storm
production is forecast.

C. NOAA Radio Blackout Activity and Forecast

No radio blackouts were observed over the past 24 hours.

Radio Blackout Forecast for Jun 08-Jun 10 2025

Jun 08 Jun 09 Jun 10
R1-R2 30% 35% 35%
R3 or greater 5% 5% 5%

Rationale: A chance exists for R1-R2 (Minor-Moderate) radio blackouts
over 08-10 Jun.



--- MBSE BBS v1.1.1 (Linux-x86_64)
* Origin: Outpost BBS * Johnson City, TN (1:18/200)

:Product: 3-Day Forecast
:Issued: 2025 Jun 11 0030 UTC
# Prepared by the U.S. Dept. of Commerce, NOAA, Space Weather Prediction Center
#
A. NOAA Geomagnetic Activity Observation and Forecast

The greatest observed 3 hr Kp over the past 24 hours was 3 (below NOAA
Scale levels).
The greatest expected 3 hr Kp for Jun 11-Jun 13 2025 is 4.00 (below NOAA
Scale levels).

NOAA Kp index breakdown Jun 11-Jun 13 2025

Jun 11 Jun 12 Jun 13
00-03UT 2.33 2.33 3.67
03-06UT 3.00 2.67 3.33
06-09UT 2.67 1.67 3.33
09-12UT 2.33 2.00 2.67
12-15UT 1.33 2.00 2.67
15-18UT 1.00 2.00 2.67
18-21UT 3.33 2.00 3.00
21-00UT 4.00 2.67 2.33

Rationale: No G1 (Minor) or greater geomagnetic storms are expected. No significant transient or recurrent solar wind features are forecast.

B. NOAA Solar Radiation Activity Observation and Forecast

Solar radiation, as observed by NOAA GOES-18 over the past 24 hours, was
below S-scale storm level thresholds.

Solar Radiation Storm Forecast for Jun 11-Jun 13 2025

Jun 11 Jun 12 Jun 13
S1 or greater 5% 5% 5%

Rationale: No S1 (Minor) or greater solar radiation storms are expected.
No significant active region activity favorable for radiation storm
production is forecast.

C. NOAA Radio Blackout Activity and Forecast

No radio blackouts were observed over the past 24 hours.

Radio Blackout Forecast for Jun 11-Jun 13 2025

Jun 11 Jun 12 Jun 13
R1-R2 35% 35% 35%
R3 or greater 5% 5% 5%

Rationale: There is a chance for R1-R2 (Minor-Moderate) radio blackouts
all three days.



--- MBSE BBS v1.1.1 (Linux-x86_64)
* Origin: Outpost BBS * Johnson City, TN (1:18/200)

Keeping my fingers crossed the band will be in better shape for ARRL Field Day!

Rug Rat (Brent Hendricks)
Blog and Forums - www.catracing.org
IMAGE BBS! 3.0 - bbs.catracing.org 6400
C-Net Amiga BBS - bbs.catracing.org 6840
--- CNet/5
* Origin: The Rat's Den BBS (1:135/250)

:Product: 3-Day Forecast
:Issued: 2025 Jun 14 0030 UTC
# Prepared by the U.S. Dept. of Commerce, NOAA, Space Weather Prediction Center
#
A. NOAA Geomagnetic Activity Observation and Forecast

The greatest observed 3 hr Kp over the past 24 hours was 6 (NOAA Scale
G2).
The greatest expected 3 hr Kp for Jun 14-Jun 16 2025 is 6.00 (NOAA Scale
G2).

NOAA Kp index breakdown Jun 14-Jun 16 2025

Jun 14 Jun 15 Jun 16
00-03UT 4.67 (G1) 5.00 (G1) 4.67 (G1)
03-06UT 5.33 (G1) 4.33 4.00
06-09UT 5.67 (G2) 3.67 3.33
09-12UT 4.33 3.33 3.00
12-15UT 3.33 2.67 3.00
15-18UT 4.67 (G1) 3.00 2.33
18-21UT 5.00 (G1) 3.00 2.33
21-00UT 6.00 (G2) 4.00 3.00

Rationale: Periods of G1-G2 (Minor-Moderate) geomagnetic storms are
expected on 14 Jun due to CME and CH HSS influences. Periods of G1
(Minor) storming are likely on 15-16 Jun due to CH HSS influences.

B. NOAA Solar Radiation Activity Observation and Forecast

Solar radiation, as observed by NOAA GOES-18 over the past 24 hours, was
below S-scale storm level thresholds.

Solar Radiation Storm Forecast for Jun 14-Jun 16 2025

Jun 14 Jun 15 Jun 16
S1 or greater 5% 5% 5%

Rationale: No S1 (Minor) or greater solar radiation storms are expected.
No significant active region activity favorable for radiation storm
production is forecast.

C. NOAA Radio Blackout Activity and Forecast

Radio blackouts reaching the R1 levels were observed over the past 24
hours. The largest was at Jun 13 2025 2110 UTC.

Radio Blackout Forecast for Jun 14-Jun 16 2025

Jun 14 Jun 15 Jun 16
R1-R2 40% 40% 40%
R3 or greater 5% 5% 5%

Rationale: There is a chance for R1-R2 (Minor-Moderate) radio blackouts
over 14-16 Jun.



--- MBSE BBS v1.1.1 (Linux-x86_64)
* Origin: Outpost BBS * Johnson City, TN (1:18/200)

:Product: 3-Day Forecast
:Issued: 2025 Jun 17 0030 UTC
# Prepared by the U.S. Dept. of Commerce, NOAA, Space Weather Prediction Center
#
A. NOAA Geomagnetic Activity Observation and Forecast

The greatest observed 3 hr Kp over the past 24 hours was 4 (below NOAA
Scale levels).
The greatest expected 3 hr Kp for Jun 17-Jun 19 2025 is 4.33 (below NOAA
Scale levels).

NOAA Kp index breakdown Jun 17-Jun 19 2025

Jun 17 Jun 18 Jun 19
00-03UT 3.00 3.33 3.33
03-06UT 3.67 3.00 2.00
06-09UT 2.67 2.00 2.00
09-12UT 2.67 2.33 3.00
12-15UT 2.33 2.67 3.00
15-18UT 1.67 3.33 3.33
18-21UT 0.67 4.00 3.33
21-00UT 1.00 4.33 3.33

Rationale: No G1 (Minor) or greater geomagnetic storms are expected. No significant transient or recurrent solar wind features are forecast.

B. NOAA Solar Radiation Activity Observation and Forecast

Solar radiation, as observed by NOAA GOES-18 over the past 24 hours, was
below S-scale storm level thresholds.

Solar Radiation Storm Forecast for Jun 17-Jun 19 2025

Jun 17 Jun 18 Jun 19
S1 or greater 30% 15% 5%

Rationale: There is a decreasing chance for S1 (Minor) or greater solar radiation storms over the next three days.

C. NOAA Radio Blackout Activity and Forecast

Radio blackouts reaching the R2 levels were observed over the past 24
hours. The largest was at Jun 16 2025 0938 UTC.

Radio Blackout Forecast for Jun 17-Jun 19 2025

Jun 17 Jun 18 Jun 19
R1-R2 75% 75% 70%
R3 or greater 30% 30% 30%

Rationale: R1-R2 (Minor-Moderate) radio blackouts are expected, with a
chance for R3 (Strong) or greater events, over 17-19 Jun.



--- MBSE BBS v1.1.1 (Linux-x86_64)
* Origin: Outpost BBS * Johnson City, TN (1:18/200)

:Product: 3-Day Forecast
:Issued: 2025 Jun 20 0030 UTC
# Prepared by the U.S. Dept. of Commerce, NOAA, Space Weather Prediction Center
#
A. NOAA Geomagnetic Activity Observation and Forecast

The greatest observed 3 hr Kp over the past 24 hours was 4 (below NOAA
Scale levels).
The greatest expected 3 hr Kp for Jun 20-Jun 22 2025 is 5.00 (NOAA Scale
G1).

NOAA Kp index breakdown Jun 20-Jun 22 2025

Jun 20 Jun 21 Jun 22
00-03UT 2.33 2.67 1.67
03-06UT 4.33 2.00 1.33
06-09UT 5.00 (G1) 2.33 1.33
09-12UT 4.33 2.33 1.33
12-15UT 3.33 2.33 1.67
15-18UT 3.33 2.33 1.33
18-21UT 2.33 2.33 1.67
21-00UT 3.67 2.67 1.33

Rationale: An isolated period of G1 (Minor) geomagnetic storms are
likely on 20 Jun due to positive polarity CH HSS influences and possible influences from a CME that left the Sun on 17 Jun.

B. NOAA Solar Radiation Activity Observation and Forecast

Solar radiation, as observed by NOAA GOES-18 over the past 24 hours, was
below S-scale storm level thresholds.

Solar Radiation Storm Forecast for Jun 20-Jun 22 2025

Jun 20 Jun 21 Jun 22
S1 or greater 10% 10% 10%

Rationale: There is a slight chance for S1 (Minor) solar radiation
storms over 20-22 Jun.

C. NOAA Radio Blackout Activity and Forecast

Radio blackouts reaching the R3 levels were observed over the past 24
hours. The largest was at Jun 19 2025 2350 UTC.

Radio Blackout Forecast for Jun 20-Jun 22 2025

Jun 20 Jun 21 Jun 22
R1-R2 65% 65% 65%
R3 or greater 15% 15% 15%

Rationale: R1-R2 (Minor-Moderate) radio blackouts are expected, with a
slight chance for R3 (Strong) or greater events, over 20-22 Jun.



--- MBSE BBS v1.1.1 (Linux-x86_64)
* Origin: Outpost BBS * Johnson City, TN (1:18/200)

:Product: 3-Day Forecast
:Issued: 2025 Jun 23 0030 UTC
# Prepared by the U.S. Dept. of Commerce, NOAA, Space Weather Prediction Center
#
A. NOAA Geomagnetic Activity Observation and Forecast

The greatest observed 3 hr Kp over the past 24 hours was 4 (below NOAA
Scale levels).
The greatest expected 3 hr Kp for Jun 23-Jun 25 2025 is 4.67 (NOAA Scale
G1).

NOAA Kp index breakdown Jun 23-Jun 25 2025

Jun 23 Jun 24 Jun 25
00-03UT 2.67 3.00 4.67 (G1)
03-06UT 2.00 3.67 4.67 (G1)
06-09UT 2.00 2.00 4.00
09-12UT 2.67 2.67 4.00
12-15UT 3.67 2.67 4.67 (G1)
15-18UT 2.67 2.67 4.67 (G1)
18-21UT 2.67 2.67 4.67 (G1)
21-00UT 3.00 2.00 4.00

Rationale: Periods of G1 (Minor) geomagnetic storms are likely on 25 Jun
due to the onset of negative polarity CH HSS influences.

B. NOAA Solar Radiation Activity Observation and Forecast

Solar radiation, as observed by NOAA GOES-18 over the past 24 hours, was
below S-scale storm level thresholds.

Solar Radiation Storm Forecast for Jun 23-Jun 25 2025

Jun 23 Jun 24 Jun 25
S1 or greater 10% 10% 10%

Rationale: There is a slight chance for S1 (Minor) solar radiation
storms over 23-25 Jun due to eruptive potential from multiple regions on
the visible disk.

C. NOAA Radio Blackout Activity and Forecast

No radio blackouts were observed over the past 24 hours.

Radio Blackout Forecast for Jun 23-Jun 25 2025

Jun 23 Jun 24 Jun 25
R1-R2 45% 45% 45%
R3 or greater 10% 10% 10%

Rationale: There is a chance for R1-R2 (Minor-Moderate) radio blackouts,
and a slight chance for R3 (Strong) or greater events, over 23-25 Jun.



--- MBSE BBS v1.1.1 (Linux-x86_64)
* Origin: Outpost BBS * Johnson City, TN (1:18/200)

:Product: 3-Day Forecast
:Issued: 2025 Jun 26 0030 UTC
# Prepared by the U.S. Dept. of Commerce, NOAA, Space Weather Prediction Center
#
A. NOAA Geomagnetic Activity Observation and Forecast

The greatest observed 3 hr Kp over the past 24 hours was 4 (below NOAA
Scale levels).
The greatest expected 3 hr Kp for Jun 26-Jun 28 2025 is 5.33 (NOAA Scale
G1).

NOAA Kp index breakdown Jun 26-Jun 28 2025

Jun 26 Jun 27 Jun 28
00-03UT 5.33 (G1) 4.00 3.67
03-06UT 5.00 (G1) 4.67 (G1) 3.33
06-09UT 4.00 4.00 3.00
09-12UT 3.67 3.33 2.67
12-15UT 3.00 2.33 2.33
15-18UT 3.00 2.33 2.33
18-21UT 4.00 2.67 2.67
21-00UT 5.00 (G1) 3.00 2.67

Rationale: G1 (Minor) geomagnetic storming is likely, with a chance for
an insolated G2 (Moderate) storming period, on 26-27 June due to
negative polarity CH HSS effects.

B. NOAA Solar Radiation Activity Observation and Forecast

Solar radiation, as observed by NOAA GOES-18 over the past 24 hours, was
below S-scale storm level thresholds.

Solar Radiation Storm Forecast for Jun 26-Jun 28 2025

Jun 26 Jun 27 Jun 28
S1 or greater 5% 5% 5%

Rationale: No S1 (Minor) or greater solar radiation storms are expected.
No significant active region activity favorable for radiation storm
production is forecast.

C. NOAA Radio Blackout Activity and Forecast

No radio blackouts were observed over the past 24 hours.

Radio Blackout Forecast for Jun 26-Jun 28 2025

Jun 26 Jun 27 Jun 28
R1-R2 30% 35% 35%
R3 or greater 5% 5% 5%

Rationale: A chance for R1-R2 (Minor-Moderate) radio blackouts, with a
slight chance for X-class flares (R3-Strong), will persist through 28
June.



--- MBSE BBS v1.1.1 (Linux-x86_64)
* Origin: Outpost BBS * Johnson City, TN (1:18/200)

:Product: 3-Day Forecast
:Issued: 2025 Jun 29 0030 UTC
# Prepared by the U.S. Dept. of Commerce, NOAA, Space Weather Prediction Center
#
A. NOAA Geomagnetic Activity Observation and Forecast

The greatest observed 3 hr Kp over the past 24 hours was 3 (below NOAA
Scale levels).
The greatest expected 3 hr Kp for Jun 29-Jul 01 2025 is 2.67 (below NOAA
Scale levels).

NOAA Kp index breakdown Jun 29-Jul 01 2025

Jun 29 Jun 30 Jul 01
00-03UT 2.67 1.67 1.33
03-06UT 2.33 1.67 1.67
06-09UT 2.33 1.67 1.33
09-12UT 2.00 1.33 1.33
12-15UT 1.33 1.33 1.67
15-18UT 1.67 1.33 1.67
18-21UT 2.00 1.33 1.33
21-00UT 2.00 1.33 1.33

Rationale: No G1 (Minor) or greater geomagnetic storms are expected. No significant transient or recurrent solar wind features are forecast.

B. NOAA Solar Radiation Activity Observation and Forecast

Solar radiation, as observed by NOAA GOES-18 over the past 24 hours, was
below S-scale storm level thresholds.

Solar Radiation Storm Forecast for Jun 29-Jul 01 2025

Jun 29 Jun 30 Jul 01
S1 or greater 5% 5% 5%

Rationale: No S1 (Minor) or greater solar radiation storms are expected.
No significant active region activity favorable for radiation storm
production is forecast.

C. NOAA Radio Blackout Activity and Forecast

No radio blackouts were observed over the past 24 hours.

Radio Blackout Forecast for Jun 29-Jul 01 2025

Jun 29 Jun 30 Jul 01
R1-R2 25% 25% 25%
R3 or greater 5% 5% 5%

Rationale: There is a chance for R1-R2 (Minor-Moderate) radio blackouts
through the period.



--- MBSE BBS v1.1.1 (Linux-x86_64)
* Origin: Outpost BBS * Johnson City, TN (1:18/200)

:Product: 3-Day Forecast
:Issued: 2025 Jul 02 0030 UTC
# Prepared by the U.S. Dept. of Commerce, NOAA, Space Weather Prediction Center
#
A. NOAA Geomagnetic Activity Observation and Forecast

The greatest observed 3 hr Kp over the past 24 hours was 3 (below NOAA
Scale levels).
The greatest expected 3 hr Kp for Jul 02-Jul 04 2025 is 5.33 (NOAA Scale
G1).

NOAA Kp index breakdown Jul 02-Jul 04 2025

Jul 02 Jul 03 Jul 04
00-03UT 4.33 4.67 (G1) 2.67
03-06UT 5.33 (G1) 4.33 4.00
06-09UT 5.00 (G1) 3.33 3.00
09-12UT 4.00 2.67 2.67
12-15UT 3.00 2.33 1.67
15-18UT 3.00 2.67 1.67
18-21UT 3.67 3.00 2.00
21-00UT 4.67 (G1) 3.67 2.67

Rationale: G1 (Minor) geomagnetic storm levels are likely on 02-03 Jul
due to the arrival of the 28 Jun CME.

B. NOAA Solar Radiation Activity Observation and Forecast

Solar radiation, as observed by NOAA GOES-18 over the past 24 hours, was
below S-scale storm level thresholds.

Solar Radiation Storm Forecast for Jul 02-Jul 04 2025

Jul 02 Jul 03 Jul 04
S1 or greater 5% 1% 1%

Rationale: No S1 (Minor) or greater solar radiation storms are expected.
No significant active region activity favorable for radiation storm
production is forecast.

C. NOAA Radio Blackout Activity and Forecast

No radio blackouts were observed over the past 24 hours.

Radio Blackout Forecast for Jul 02-Jul 04 2025

Jul 02 Jul 03 Jul 04
R1-R2 20% 15% 15%
R3 or greater 5% 1% 1%

Rationale: A slight chance for R1-R2 (Minor-Moderate) radio blackouts
due to isolated M-class flare activity will persist through 04 July.



--- MBSE BBS v1.1.1 (Linux-x86_64)
* Origin: Outpost BBS * Johnson City, TN (1:18/200)

:Product: 3-Day Forecast
:Issued: 2025 Jul 05 0030 UTC
# Prepared by the U.S. Dept. of Commerce, NOAA, Space Weather Prediction Center
#
A. NOAA Geomagnetic Activity Observation and Forecast

The greatest observed 3 hr Kp over the past 24 hours was 4 (below NOAA
Scale levels).
The greatest expected 3 hr Kp for Jul 05-Jul 07 2025 is 3.00 (below NOAA
Scale levels).

NOAA Kp index breakdown Jul 05-Jul 07 2025

Jul 05 Jul 06 Jul 07
00-03UT 3.00 2.33 3.00
03-06UT 2.67 2.67 3.00
06-09UT 2.33 2.67 2.00
09-12UT 2.00 2.00 2.00
12-15UT 2.33 2.00 2.00
15-18UT 2.33 1.00 1.00
18-21UT 2.33 2.00 0.67
21-00UT 2.67 2.33 1.67

Rationale: No G1 (Minor) or greater geomagnetic storms are expected. No significant transient or recurrent solar wind features are forecast.

B. NOAA Solar Radiation Activity Observation and Forecast

Solar radiation, as observed by NOAA GOES-18 over the past 24 hours, was
below S-scale storm level thresholds.

Solar Radiation Storm Forecast for Jul 05-Jul 07 2025

Jul 05 Jul 06 Jul 07
S1 or greater 1% 1% 1%

Rationale: No S1 (Minor) or greater solar radiation storms are expected.
No significant active region activity favorable for radiation storm
production is forecast.

C. NOAA Radio Blackout Activity and Forecast

No radio blackouts were observed over the past 24 hours.

Radio Blackout Forecast for Jul 05-Jul 07 2025

Jul 05 Jul 06 Jul 07
R1-R2 10% 10% 10%
R3 or greater 1% 1% 1%

Rationale: There is a slight chance for R1-R2 (Minor-Moderate) radio
blackouts over 05-07 Jul.



--- MBSE BBS v1.1.1 (Linux-x86_64)
* Origin: Outpost BBS * Johnson City, TN (1:18/200)