Viewing archive of Tuesday, 5 March 2013

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2013 Mar 05 1322 UTC

SIDC Forecast

Solar flares

Eruptive (C-class flares expected, probability >= 50%)

Geomagnetism

Active conditions expected (A>=20 or K=4)

Solar protons

Warning condition

	10cm flux	Ap
05 Mar 2013	114	007
06 Mar 2013	115	011
07 Mar 2013	117	007

Bulletin

NOAA AR 1686 (S12W52) produced an isolated M1.2 flare peaking at 07:54 UT, C-class level activity can be expected for the coming hours. Dimmings associated with this flare suggest the presence of a CME, but there is nothing visible in STEREO-A and no LASCO data yet. STEREO-B witnessed a full halo CME starting at 04:10 UT (COR2), this is a backsided event not expected to arrive to the Earth. A filament erupted south-east of NOAA AR 1688 (S15E31) at 23:00 UT on March 4 leading to a narrow CME seen by STEREO-B, this event is not believed to be Earth directed, even though there is no LASCO data yet to confirm (data gap). Geomagnetic conditions have been quiet and are expected to remain so until the arrival of a fast speed stream in 24h that may lead to active levels.

Today's estimated international sunspot number (ISN): 059, based on 16 stations.

Solar indices for 4 Mar 2013

Wolf number Catania	088
10cm solar flux	114
AK Chambon La Forêt	009
AK Wingst	005
Estimated Ap	004
Estimated international sunspot number	060 - Based on 25 stations

Noticeable events summary

Provided by the Solar Influences Data analysis Center© - SIDC - Processed by SpaceWeatherLive

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