Current conditions

:Product: Geophysical Alert Message wwv.txt
:Issued: 2026 May 30 1805 UTC
# Prepared by the US Dept. of Commerce, NOAA, Space Weather Prediction Center
#
#          Geophysical Alert Message
#
Solar-terrestrial indices for 29 May follow.
Solar flux 148 and estimated planetary A-index 15.
The estimated planetary K-index at 1800 UTC on 30 May was 2.33.

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
2026 May 30	1	2	5	3	3	4	1	1
2026 May 31	2	2	3	3	5	3	3	2
2026 Jun 1	2	2	3	3	4	2	2	2

Probability of Geomagnetic conditions at high latitudes

	Active	Minor_Storm	Major-Severe_Storm
2026 May 30	20	35	30
2026 May 31	20	35	35
2026 Jun 1	15	25	30

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 May 30	2	2	4	2	2	2	1	2
2026 May 31	3	2	2	2	3	2	3	3
2026 Jun 1	3	3	3	2	2	2	2	2

Probability of Geomagnetic conditions at mid latitudes

	Active	Minor_Storm	Major-Severe_Storm
2026 May 30	25	5	1
2026 May 31	30	10	1
2026 Jun 1	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)

Sun tools

Greyline calculator

Sunrise Sunset calendar