MSGID: 1:18/200@fidonet 66925385
PID: MBSE-FIDO 1.1.1 (Linux-x86_64)
CHRS: CP437 2
TZUTC: -0400
TID: MBSE-FIDO 1.1.1 (Linux-x86_64)
: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.



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