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WWV Geophysical Alert Message - NOAA Space Weather Prediction Center


Issued: 2017 Jul 20 1205 UTC

Solar-terrestrial indices for 19 July follow.
Solar flux 73 and estimated planetary A-index 4.
The estimated planetary K-index at 1200 UTC on 20 July was 1.

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

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

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 If it appears incomplete or outdated, click here for alternate version.

    3-Day Forecast - Text Alert System Terminology    

Additional info at The SWPC Radio Dashboard from NOAA.*
Detailed explanation of the R, S, and G Scales used by NOAA in their predictions.

*If NOAA moves their blessed %#!$ radio dashboard AGAIN, search the Not Found page for a new link to Dashboards.

Grayline and MUF World Map Updates every 5 minutes; also shows x-ray absorption contours when applicable.

Blitzortung Live Lightning Map Real-time strike data.

LightningMaps.org Blitzortung data with fancier graphics.

Vaisala Lightning Tracker Delayed info.

The Solar Terrestrial Activity Report from Jan Alvestad; valuable propagation resource with solar flux, sunspot number, planetary A index, CMEs and coronal holes.

SpaceWeather.com tracks daily events on the Sun, the solar wind, meteor rates, NASA forecasts, and other astronomical phenomena.

 

 

 

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