G2 (MODERATE) GEOMAGNETIC STORM IN PROGRESS, G3 (STRONG) WATCH FOR 14 OCTOBER
UPDATE: Moderate (G2) to Strong (G3) geomagnetic storming possible during the next 24 hours thanks to a long lasting sector of negative Bz. Visible aurora will be likely tonight at middle to high latitudes.
EXTENDED WARNING: Geomagnetic K-Index of 6 expected
Valid From: 2016 Oct 13 1237 UTC
Now Valid Until: 2016 Oct 14 0300 UTC
Warning Condition: Persistence
A G2 (Moderate) Geomagnetic Storm commenced at 1759 UTC (~2:00 pm ET) on 13 October due to continued CME effects. A G3 (Strong) Geomagnetic Storm Watch remains in effect for 14 October as effects persist. Sky watchers at higher latitudes should still be alert for visible aurora tonight once dark outside.
Stay tuned for updates!
Solar Wind Speed: 434 km/sec
Solar Wind Magnetic Fields: Bt 22 nT, Bz -18 nT
CLIPS,IMAGES CREDIT: NOAA/SWPC, SOHO, NASA/SDO, spaceweather.com & solarham.net
Thank you so much!
G2 (Moderate) Geomagnetic Storm Impacts
Power systems: High-latitude power systems may experience voltage alarms, long-duration storms may cause transformer damage.
Spacecraft operations: Corrective actions to orientation may be required by ground control; possible changes in drag affect orbit predictions.
Other systems: HF radio propagation can fade at higher latitudes, and aurora has been seen as low as New York and Idaho (typically 55° geomagnetic lat.).