Talk Morgan Forums Community The Malvern Arms Northern Lights

Spaceweather.

CHANCE OF STORMS TODAY: NOAA forecasters say there is a chance of G1-class geomagnetic storms today, Feb. 20th, as a stream of high-speed solar wind engulfs Earth. The gaseous material is flowing faster than 500 km/s from an equatorial hole in the sun's atmosphere.

CIR HITS EARTH, SPARKS ARCTIC AURORAS: Last night, a co-rotating interaction region (CIR) hit Earth's magnetic field.
A CIR is like a mini-CME (coronal mass ejection). It's a transition zone between slow- and fast-moving streams of solar wind. Shock-like density gradients inside CIRs often do a good job sparking auroras.