Current conditions

:Product: Geophysical Alert Message wwv.txt
:Issued: 2026 Aug 25 1505 UTC
# Prepared by the US Dept. of Commerce, NOAA, Space Weather Prediction Center
#
#          Geophysical Alert Message
#
Solar-terrestrial indices for 24 August follow.
Solar flux 143 and estimated planetary A-index 6.
The estimated planetary K-index at 1500 UTC on 25 August was 1.00.

Space weather for the past 24 hours has been moderate.
Radio blackouts reaching the R2 level occurred.

Space weather for the next 24 hours is predicted to be moderate.
Radio blackouts reaching the R2 level are likely.

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
2026 Aug 25	1	1	1	2	2	1	1	1
2026 Aug 26	1	1	2	2	0	1	1	1
2026 Aug 27	1	1	1	3	4	3	3	3

Probability of Geomagnetic conditions at high latitudes

	Active	Minor_Storm	Major-Severe_Storm
2026 Aug 25	15	20	20
2026 Aug 26	15	20	20
2026 Aug 27	15	30	40

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
2026 Aug 25	2	2	2	1	2	1	2	1
2026 Aug 26	2	2	2	1	1	1	2	2
2026 Aug 27	2	1	2	2	2	2	3	3

Probability of Geomagnetic conditions at mid latitudes

	Active	Minor_Storm	Major-Severe_Storm
2026 Aug 25	10	5	1
2026 Aug 26	10	5	1
2026 Aug 27	30	15	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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