Viewing archive of Friday, 1 February 2013

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2013 Feb 01 1144 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
01 Feb 2013	099	003
02 Feb 2013	098	004
03 Feb 2013	097	015

Bulletin

Solar flaring activity remains low and the solar wind is quiet. Two filament eruptions were observed on the east side on the solar disk yesterday. SDO/AIA images show a filament erupting in the southeast around 06:00 UT and one in the northeast around 16:30 UT. The CACTus halo CME alert sent at 07:26 UT today concerned the associated CMEs. While the second CME was not earth-directed, we expect a possible glancing blow from the first one early on February 3. Geomagnetic conditions are very quiet. We expect possible unsettled to active conditions (K <= 4) on February 3 due to the possible arrival of the CME mentioned above and a coronal hole that may become geo-effective. The SIDC All Quiet alert remains valid for now.

Today's estimated international sunspot number (ISN): 043, based on 10 stations.

Solar indices for 31 Jan 2013

Wolf number Catania	048
10cm solar flux	103
AK Chambon La Forêt	007
AK Wingst	003
Estimated Ap	002
Estimated international sunspot number	034 - Based on 20 stations

Noticeable events summary

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

All times in UTC

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