Impulsive solar flare measuring M3.5 erupted from eastern limb

impulsive-solar-flare-measuring-m3-5-erupted-from-eastern-limb

Impulsive solar flare measuring M3.5 erupted on December 19 at 23:19 UTC. The source of the event was centered around new active region in close proximity to AR 1931 located on eastern limb.

This region is not yet in position to cause Earth directed CMEs.

The second largest event on December 19th was C2 solar flare centered around Region 1928 (S16W19, Ekc/beta-gamma) at 15:35 UTC from.

Image credit: NASA SDO/EVE. Edit: The Watchers

There are currently 9 numbered sunspot regions on the disk. Slight growth was observed in Regions 1928 and 1930 (S11E22, Dai/beta). Moderate growth was observed in an unnumbered region that recently developed near S14W35. The rest of the spotted regions were either stable or in decay. No Earth-directed coronal mass ejections (CMEs) were observed on December 19th.

Sunspots on December 19, 2013. Image courtesy: NASA SDO HMI

1917 S16W77 77 420 7 DKI 4 Beta-Gamma
1918 S09W55 55 50 3 HAX 1 Alpha
1920 N12W48 48 50 3 HSX 1 Alpha
1921 N06W43 43 220 4 DSO 2 Beta
1927 S26W0* 101 10 1 BXO 2 Beta
1928 S15W05 5 240 10 DAI 21 Beta-Gamma
1929 S11E55 305 10 0 HRX 1 Alpha
1930 S09E35 325 40 3 CAI 7 Beta
1931 S14E76 284 100 2 HAX 1 Alpha

Solar activity is expected to be low with a chance for M-class (R1-R2 / Minor-Moderate) flare activity for the forecast period December 20 – 22.

Read more: The weak solar cycle and its consequences

Featured image: NASA SDO

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