Current conditions

:Product: Geophysical Alert Message wwv.txt
:Issued: 2024 Apr 20 1205 UTC
# Prepared by the US Dept. of Commerce, NOAA, Space Weather Prediction Center
#
#          Geophysical Alert Message
#
Solar-terrestrial indices for 19 April follow.
Solar flux 213 and estimated planetary A-index 41.
The estimated planetary K-index at 1200 UTC on 20 April was 3.33.

Space weather for the past 24 hours has been strong.
Geomagnetic storms reaching the G3 level occurred.
Radio blackouts reaching the R1 level occurred.

Space weather for the next 24 hours is predicted to be minor.
Radio blackouts reaching the R1 level are expected.

wwv alert messages

Last 25 or 250 wwv alert messages.

Solar activity and geomagnetic forecast

Geomagnetic 3 days forecast for high latitudes

planetary index (K)

UTC	00-03	03-06	06-09	09-12	12-15	15-18	18-21	21-00
2024 Apr 20	1	1	2	2	4	3	2	2
2024 Apr 21	2	3	3	4	3	2	2	1
2024 Apr 22	2	2	2	4	3	2	1	1

Probability of Geomagnetic conditions at high latitudes

	Active	Minor_Storm	Major-Severe_Storm
2024 Apr 20	15	25	35
2024 Apr 21	15	30	50
2024 Apr 22	15	25	25

Geomagnetic 3 days forecast for mid latitudes

planetary index (K)

UTC	00-03	03-06	06-09	09-12	12-15	15-18	18-21	21-00
2024 Apr 20	2	1	2	1	2	2	2	3
2024 Apr 21	3	3	3	3	2	2	2	2
2024 Apr 22	2	3	2	2	2	1	2	2

Probability of Geomagnetic conditions at mid latitudes

	Active	Minor_Storm	Major-Severe_Storm
2024 Apr 20	25	10	1
2024 Apr 21	35	15	1
2024 Apr 22	20	5	1

24-hour forecast of a polar cap absorption (PCA) event

Green
No active sunspot region on the Sun is likely to produce a PCA event in the 24 hours.

Computed daily at 23h00Utc from datas issued from SEC.
f5len.org (c 2004-2010)

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