Planetary K-index 3-day Plot

:Product: 3-Day Forecast
:Issued: 2017 Nov 21 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 Nov 21-Nov 23 2017 is 4 (below NOAA
Scale levels).

NOAA Kp index breakdown Nov 21-Nov 23 2017

            Nov 21     Nov 22     Nov 23
00-03UT        4          4          3     
03-06UT        4          3          2     
06-09UT        3          3          2     
09-12UT        3          3          2     
12-15UT        3          3          2     
15-18UT        3          2          2     
18-21UT        3          3          2     
21-00UT        4          3          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-13 over the past 24 hours, was
below S-scale storm level thresholds.

Solar Radiation Storm Forecast for Nov 21-Nov 23 2017

              Nov 21  Nov 22  Nov 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 Nov 21-Nov 23 2017

              Nov 21        Nov 22        Nov 23
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.

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