Solar storm watch

A major disturbance on the sun's surface could result in a disruptive geomatic storm, the National Oceanic and Atmospheric Administration warns.

The so-called coronal mass ejection occurred last night, NOAA said, and the fall-out could have widespread impacts come tomorrow morning.

Already, according to NOAA, a related "radiation storm" has set off high-frequency radio blackouts at the Poles and in other regions.

Geomagnetic storms can affect electrical grids and radio and satellite telecommunications.

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