Viewing archive of Monday, 4 February 2013

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2013 Feb 04 1228 UTC

SIDC Forecast

Solar flares

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

Geomagnetism

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

Solar protons

Quiet

	10cm flux	Ap
04 Feb 2013	114	005
05 Feb 2013	115	012
06 Feb 2013	115	013

Bulletin

Four C-class flares were detected during the past 24 hours, and the strongest one was C8.4 flare peaking at 06:10 UT, on February 3. The C-class flares are possible, in particular from the Catania sunspot group 79 (NOAA AR 1667). The interplanetary magnetic field magnitude is about 5 nT. The Earth is currently under the influence of a slow solar wind with the speed of 350 km/s. The low-latitude coronal hole in the northern hemisphere has passed the central meridian and we expect arrival of the fast solar wind late on February 5. We expect quiet to possibly active geomagnetic conditions in the next 48 hours.

Today's estimated international sunspot number (ISN): 022, based on 07 stations.

Solar indices for 3 Feb 2013

Wolf number Catania	///
10cm solar flux	111
AK Chambon La Forêt	008
AK Wingst	006
Estimated Ap	005
Estimated international sunspot number	053 - Based on 15 stations

Noticeable events summary

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

All times in UTC

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