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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 2 (below NOAA
Scale levels).
The greatest expected 3 hr Kp for Mar 21-Mar 23 2019 is 6 (NOAA Scale
G2).

NOAA Kp index breakdown Mar 21-Mar 23 2019

            Mar 21     Mar 22     Mar 23
00-03UT        2          2          2     
03-06UT        1          1          1     
06-09UT        1          1          2     
09-12UT        1          1          2     
12-15UT        1          1          3     
15-18UT        1          2          6 (G2)
18-21UT        2          2          6 (G2)
21-00UT        2          1          5 (G1)

Rationale: G1-G2 (Minor-Moderate) geomagnetic storms are likely on 23
Mar due to the anticipated arrival of a CME from 20 Mar.

B. NOAA Solar Radiation Activity Observation and Forecast

Solar radiation, as observed by NOAA GOES-15 over the past 24 hours, was
below S-scale storm level thresholds.

Solar Radiation Storm Forecast for Mar 21-Mar 23 2019

              Mar 21  Mar 22  Mar 23
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 Mar 21-Mar 23 2019

              Mar 21        Mar 22        Mar 23
R1-R2           15%           15%           15%
R3 or greater    1%            1%            1%

Rationale: There is a slight chance for R1-R2 (Minor-Moderate) radio
blackouts on 21-23 Mar due to the flare potential of Region 2736.