MSGID: 1:18/200@fidonet 6693a855
PID: MBSE-FIDO 1.1.2 (Linux-x86_64)
CHRS: CP437 2
TZUTC: -0400
TID: MBSE-FIDO 1.1.2 (Linux-x86_64)
:Product: 3-Day Forecast
:Issued: 2025 Oct 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 4 (below NOAA
Scale levels).
The greatest expected 3 hr Kp for Oct 29-Oct 31 2025 is 5.00 (NOAA Scale
G1).

NOAA Kp index breakdown Oct 29-Oct 31 2025

             Oct 29       Oct 30       Oct 31
00-03UT       4.33         4.67 (G1)    3.67
03-06UT       5.00 (G1)    4.00         3.67
06-09UT       4.33         4.00         3.33
09-12UT       3.67         3.67         3.00
12-15UT       3.00         3.67         3.00
15-18UT       4.00         4.00         3.33
18-21UT       4.67 (G1)    3.33         3.00
21-00UT       4.00         3.33         3.00

Rationale: G1 (Minor) conditions, with a chance for G2 (Moderate)
levels, are likely on 29-30 Oct due to the anticipated onset of a 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 Oct 29-Oct 31 2025

              Oct 29  Oct 30  Oct 31
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 Oct 29-Oct 31 2025

              Oct 29        Oct 30        Oct 31
R1-R2            5%            5%            5%
R3 or greater    1%            1%            1%

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



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