Current conditions

:Product: Geophysical Alert Message wwv.txt
:Issued: 2025 Aug 27 0605 UTC
# Prepared by the US Dept. of Commerce, NOAA, Space Weather Prediction Center
#
#          Geophysical Alert Message
#
Solar-terrestrial indices for 26 August follow.
Solar flux 202 and estimated planetary A-index 8.
The estimated planetary K-index at 0600 UTC on 27 August was 1.33.

Space weather for the past 24 hours has been minor.
Solar radiation storms reaching the S1 level occurred.
Radio blackouts reaching the R1 level occurred.

Space weather for the next 24 hours is predicted to be minor.
Solar radiation storms reaching the S1 level are expected.
Radio blackouts reaching the R1 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
2025 Aug 27	2	3	4	4	3	2	1	1
2025 Aug 28	1	2	3	4	4	2	1	0
2025 Aug 29	2	2	2	3	3	2	2	1

Probability of Geomagnetic conditions at high latitudes

	Active	Minor_Storm	Major-Severe_Storm
2025 Aug 27	15	30	40
2025 Aug 28	15	30	25
2025 Aug 29	15	30	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
2025 Aug 27	2	3	3	2	2	1	2	2
2025 Aug 28	2	3	3	3	2	2	1	1
2025 Aug 29	2	3	2	2	2	2	2	2

Probability of Geomagnetic conditions at mid latitudes

	Active	Minor_Storm	Major-Severe_Storm
2025 Aug 27	25	10	1
2025 Aug 28	20	5	1
2025 Aug 29	20	5	1

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

Yellow
A sunspot region showing characteristics favorable for producing a PCA event is present on the Sun.
If an energetic flare occurs in this region, the probability of a significant PCA event is very high.

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

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