Viewing archive of Monday, 7 October 2013

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2013 Oct 07 1223 UTC

SIDC Forecast

Solar flares

Quiet conditions (<50% probability of C-class flares)

Geomagnetism

Quiet (A<20 and K<4)

Solar protons

Quiet

	10cm flux	Ap
07 Oct 2013	107	009
08 Oct 2013	105	007
09 Oct 2013	105	007

Bulletin

We expect essentially quiet conditions for the solar activity with a risk for an isolated C class flare from NOAA AR 1856. It produced on October 7 a C6.2 flare, peaking at 0414 UT. Current coronagraphic observations do not show a CME related to this event, but data are scarce and this will be checked in the coming hours. A C1.1 flare occurred on October 6, in Catania region 95, east of NOAA AR 1859. Peaking at 1424 UT, it was associated with a dimming and a faint halo CME observed in LASCO C2. This event might have a weak effect on the geomagnetic activity, triggering active conditions by the end of Oct. 10. For the current 48 hours, the geomagnetic activity is expected to remain mostly quiet with possibly an isolated period of unsettled conditions. Current ACE observations show weak excursions of the Bz component of the magnetic field down to -5 nT, corresponding to a sector boundary crossing.

Today's estimated international sunspot number (ISN): 053, based on 15 stations.

Solar indices for 06 Oct 2013

Wolf number Catania	///
10cm solar flux	107
AK Chambon La Forêt	007
AK Wingst	002
Estimated Ap	002
Estimated international sunspot number	036 - Based on 21 stations

Noticeable events summary

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

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