Increased solar activity continues with multiple M-class solar flares

Increased solar activity continues with multiple M-class solar flares

Only 3 hours after impulsive M 2.7 solar flare, Active Region 1875 erupted multiple solar flares registered as M 1.4 at 23:33 UTC on October 23, 2013 followed by M 3.1 at 00:08 UTC on October 24, 2013. This active region will probably continue with its high flaring activity during the rotation on this side of visible solar disk. 

Active Region 1877 produced strong M 9.3 at 00:30 UTC on October 24, 2013. This region decreased in area, but developed a beta-gama-delta configuration in its intermediate spots. It was responsible for few low-level C-class during the past few days. Extreme UV radiation from the flare ionized Earth's upper atmosphere and created a brief HF radio blackout on the sunlit side of the planet. It looks like this event produced Coronal Mass Ejection (CME) which is heading towards our planet.

 

There are curently 4 numbered sunspots facing Earth. AR 1875 and AR 1877 remain the biggest and the most dangerous considering their geo-effective position. NOAA/SWPC forecasters raised probabilities of stronger flares on 40% chance for an M-class and 5% chance for an X-class solar flares.

SDO's AIA channels show Sun at the moment of strong M 9.3 event (Courtesy of NASA/SDO and the AIA, EVE, and HMI science teams)

ALERT: Type II Radio Emission
Begin Time: 2013 Oct 24 0031 UTC
Estimated Velocity: 1321 km/s
Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event.

ALERT: Type IV Radio Emission
Begin Time: 2013 Oct 24 0056 UTC
Description: Type IV emissions occur in association with major eruptions on the sun and are typically associated with strong coronal mass ejections and solar radiation storms.

At 10:00 UTC another series of eruptions started. Region 1875 erupted with M2.5 solar flare peaking at 10:09 UTC. Immediately after that one, same region erupted with M3.5 peaking at 10:33 UTC. Type IV radio emission was associated with that latest event indicating strong CME was present.

ALERT: Type IV Radio Emission
Begin Time: 2013 Oct 24 1031 UTC
Description: Type IV emissions occur in association with major eruptions on the sun and are typically associated with strong coronal mass ejections and solar radiation storms.

Watch the Sun in real-time @ Space Weather Station

 Featured image: SDO's AIA 304 at 00:30 UTC on October 24, 2013 (Courtesy of NASA/SDO and the AIA, EVE, and HMI science teams)

Tags: m-class

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