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Geophysical Alert Message (WWV)
US Dept. of Commerce, NOAA Space Weather Prediction Center

Issued: 2013 May 18 1205 UTC

Solar-terrestrial indices for 17 May follow.
Solar flux 136 and estimated planetary A-index 9.
The estimated planetary K-index at 1200 UTC on 18 May was 3.

Space weather for the past 24 hours has been minor.
Geomagnetic storms reaching the G1 level occurred.
Solar radiation storms reaching the S1 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 expected.


NOAA updates this message every 3 hours; more often for alerts. If it appears incomplete or outdated, click here for alternate version.

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