Viewing archive of Saturday, 2 November 2013

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2013 Nov 02 1248 UTC

SIDC Forecast

Solar flares

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

Geomagnetism

Quiet (A<20 and K<4)

Solar protons

Quiet

	10cm flux	Ap
02 Nov 2013	145	006
03 Nov 2013	145	004
04 Nov 2013	145	005

Bulletin

The sun produced one M and three C flares during the past 24 hours. Catania sunspot region 29 (NOAA AR 11884) was responsible for the M6.3 flare peaking at 19:46 UT on November 1. Also Catania sunspot region 28 (NOAA AR 11885) produced a C8.2 flare with a peak at 4:46 UT on November 2. During the next 48 hours, more C flaring activity is expected with a slight chance for an M flare. Two CMEs of which one full halo CME were detected in coronographic imagery (LASCO/C2 as well as STEREO A and B), but first analysis indicates both are backsided and originate from old NOAA AR 11875. The full halo CME was first seen in LASCO/C2 at 5:00 UT and the second CME at 8:12 UT directed to the NW. Solar wind speed as observed by ACE is around 350 km/s. The magnitude of the interplanetary magnetic field (IMF) currently is stable near 5 nT. Geomagnetic activity is quiet to unsettled (local K at Dourbes and NOAA Kp between 0 and 3), which is expected to remain so within the next 48 hours.

Today's estimated international sunspot number (ISN): 069, based on 02 stations.

Solar indices for 01 Nov 2013

Wolf number Catania	///
10cm solar flux	145
AK Chambon La Forêt	007
AK Wingst	005
Estimated Ap	004
Estimated international sunspot number	085 - Based on 13 stations

Noticeable events summary

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

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