:Product: 3-Day Forecast
:Issued: 2021 Feb 26 1235 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 Feb 26-Feb 28 2021 is 2 (below NOAA
Scale levels).

NOAA Kp index breakdown Feb 26-Feb 28 2021

            Feb 26     Feb 27     Feb 28
00-03UT        2          2          2     
03-06UT        1          2          1     
06-09UT        1          1          1     
09-12UT        1          1          1     
12-15UT        1          1          1     
15-18UT        1          1          1     
18-21UT        2          1          2     
21-00UT        2          2          2     

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-16 over the past 24 hours, was
below S-scale storm level thresholds.

Solar Radiation Storm Forecast for Feb 26-Feb 28 2021

              Feb 26  Feb 27  Feb 28
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 Feb 26-Feb 28 2021

              Feb 26        Feb 27        Feb 28
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.