3 ms·
Light travels faster than plasma, so we have on the order of 12-18 hours notice of a CME targeted at us.
by daxorid 7y ago
Light travels faster than plasma, so we have on the order of 12-18 hours notice of a CME targeted at us.
- dredmorbius 7y agoWarning of a possible CME-induced electrical storm. The visible signature alone isn't proof. The actual EMF effects, based on both the nature and targeting of the CME, aren't clear until it encounters some electrically-aware monitoring device. Of which most are in Earth orbit. If countermeasures include such activities as widespread disabling / disconnecting of major grid elements and equipment, you'll want to minimise the false alarms, both on the basis of cost and because of the boy-who-cried-wolf factor.