There is the potential for aurora and F-layer enhancement this weekend in the
September VHF contest, due to a CME
from a X-Class solar flare Sept. 10. In addition, there was considerable
sporadic E on 6 meters Sept. 7. - NØJK
G2 (Moderate) geomagnetic storms remain in the forecast for September 12th as a
result of the coronal mass ejection (CME) associated with the R1 (Minor) solar
flare observed on the 9th. The latest WSA-Enlil model run has the CME
associated with yesterday's R3 (Strong) solar flare arriving mid to late day on
that same day. A G3 (Strong) Geomagnetic Storm Watch has been issued for
September 13th due to the combined influence of these two events with G1
(Minor) storming anticipated to continue into September 14th. In addition, the
S1 (Minor) solar radiation storm that is in progress as a result of the
eruption yesterday is expected to persist for the next few days. Keep in mind
that the forecast periods listed are in Universal Time so aurora watchers in
the northern U.S. should be looking for possible activity both Thursday and
Friday nights. - NASA
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