Many thanks to SWLing Post contributor, Troy Riedel, who shares the following item from Spaceweather.com.
MULTIPLE CMEs ARE COMING: At least three CMEs are heading for Earth following a series of magnetic filament eruptions (#1, #2 & #3) earlier this week. Their collective arrival could spark G2-class geomagnetic storms with mid-latitude auroras on Nov. 30th and Dec. 1st. This forecast does not yet take into account a possible CME hurled toward us by today’s almost-X class solar flare. Keep reading!
ALMOST-X CLASS SOLAR FLARE: Sunspot AR3500 erupted on Nov. 28th (1950 UT), producing an M9.8-class solar flare–only percentage points below category X. NASA’s Solar Dynamics Observatory recorded the blast:
A pulse of extreme UV radiation blacked out shortwave radio communications across the South Pacific Ocean and parts of the Americas: map. Mariners and ham radio operators may have noticed loss of signal at frequencies below 20 MHz.
This explosion almost certainly hurled a CME toward Earth. Confirmation awaits fresh data from SOHO coronagraphs. Stay tuned.
Click here to check out this news and much more on Spaceweather.com!
For complete details see the Space Weather Woman, Dr. Tamitha Skov’s presentation on YouTube
Update:
GEOMAGNETIC STORM WATCH (G3): Three and perhaps four CMEs are heading for Earth following a series of explosions on the sun this week. Estimated time of arrival: Nov. 30th and Dec. 1st. The biggest of the CMEs, launched on Nov. 28th, could sweep up some of the earlier, lesser ones, forming a Cannibal CME capable of sparking strong G3-class geomagnetic storms with mid-latitude auroras.