982
FXXX10 KWNP 020031
DAYTDF

:Product: 3-Day Forecast
:Issued: 2026 May 02 0030 UTC
# Prepared by the US Dept. of Commerce, NOAA, Space Weather Prediction Center
# Product description and SWPC contact on the Web
# http://www.swpc.noaa.gov/wwire.html
#
#             3-Day Forecast
#
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 02-May 04 2026 is 4.00 (below NOAA
Scale levels).

NOAA Kp index breakdown May 02-May 04 2026

             May 02       May 03       May 04
00-03UT       2.33         2.67         2.67
03-06UT       2.33         3.00         3.00
06-09UT       3.00         4.00         2.67
09-12UT       2.67         2.67         2.67
12-15UT       2.00         2.33         1.67
15-18UT       2.00         1.67         1.67
18-21UT       1.67         1.67         0.67
21-00UT       2.67         2.67         2.67

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 May 02-May 04 2026

              May 02  May 03  May 04
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 02-May 04 2026

              May 02        May 03        May 04
R1-R2           40%           40%           40%
R3 or greater    5%            5%            5%

Rationale: There exists a chance for R1-R2 (Minor-Moderate) radio
blackouts over 02-04 May due to the potential from multiple complex
regions on the Suns visible disk.