NOAA Issues Moderate (G2) Geomagnetic Storm Watch for September 11
From ARRL de WD1CKS@VERT/WLARB to QST on Tue Sep 11 23:02:33 2018
09/11/2018
Just as Hurricane Florence approaches the US mainland and Hurricane Olivia is poised to affect Hawaii, NOAA has issued a G2 (moderate) geomagnetic storm watch for September 11. The G2 storm could exacerbate already modest propagation on HF bands as the planetary K index rises to an estimated value of 6. The G2 forecast stems from a fast-moving stream of coronal hole solar wind that's expected to hit Earth's magnetic field. During G2 storms, auroras can appear along the northern tier of the US. Among other effects, a G2 storm could cause HF fading at higher latitudes.ÿ
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