Current conditions

:Product: Geophysical Alert Message wwv.txt
:Issued: 2025 Sep 04 1210 UTC
# Prepared by the US Dept. of Commerce, NOAA, Space Weather Prediction Center
#
#          Geophysical Alert Message
#
Solar-terrestrial indices for 03 September follow.
Solar flux 180 and estimated planetary A-index 12.
The estimated planetary K-index at 1200 UTC on 04 September was 3.00.

No space weather storms were observed for the past 24 hours.

No space weather storms are predicted for the next 24 hours.

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 Sep 4	1	2	2	4	4	3	2	1
2025 Sep 5	2	2	3	4	4	3	2	2
2025 Sep 6	4	4	5	6	5	4	2	2

Probability of Geomagnetic conditions at high latitudes

	Active	Minor_Storm	Major-Severe_Storm
2025 Sep 4	15	30	25
2025 Sep 5	10	25	50
2025 Sep 6	10	25	60

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 Sep 4	2	2	2	2	2	2	2	2
2025 Sep 5	2	2	2	2	2	2	2	3
2025 Sep 6	5	4	4	3	3	2	2	3

Probability of Geomagnetic conditions at mid latitudes

	Active	Minor_Storm	Major-Severe_Storm
2025 Sep 4	20	5	1
2025 Sep 5	35	15	1
2025 Sep 6	35	30	10

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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