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  NOAA 3 Day Space Weather Forecast
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The greatest observed 3 hr Kp over the past 24 hours was 5 (NOAA Scale
G1).
The greatest expected 3 hr Kp for Sep 26-Sep 28 2020 is 5 (NOAA Scale
G1).

NOAA Kp index breakdown Sep 26-Sep 28 2020

            Sep 26     Sep 27     Sep 28
00-03UT        4          3          3     
03-06UT        5 (G1)     4          2     
06-09UT        4          3          2     
09-12UT        4          3          2     
12-15UT        2          2          2     
15-18UT        1          2          3     
18-21UT        2          2          4     
21-00UT        3          2          5 (G1)

Rationale: G1 (Minor) geomagnetic storms are likely on 28 Sep due to CH
HSS influence.

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 Sep 26-Sep 28 2020

              Sep 26  Sep 27  Sep 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 Sep 26-Sep 28 2020

              Sep 26        Sep 27        Sep 28
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.