Viewing archive of Wednesday, 5 June 2013

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2013 Jun 05 1330 UTC

SIDC Forecast

Solar flares

Active (M-class flares expected, probability >=50%)

Geomagnetism

Quiet (A<20 and K<4)

Solar protons

Quiet

	10cm flux	Ap
05 Jun 2013	112	011
06 Jun 2013	111	011
07 Jun 2013	110	011

Bulletin

The flaring activity during last 24 hours was of the B-class level, except M1.3 flare which peaked at 08:57 UT this morning. The flare originated from the Catania sunspot group 92 (NOAA AR 1762) which still has beta-gama configuration of its photosperic magnetic field and has therefore potential for a C-class and M-class flaring. The flare was associated with a partial halo CME first seen in the SOHO/LASCO C2 field of view at 09:12 UT (this is also the first image after the data gap), and propagating with the projected speed of about 300 km/s. From the currently available data it seems that the bulk of the CME mass was southward oriented. We do not expect this CME to arrive at the Earth, however the arrival of the CME associated shock wave is still possible. The interplanetary magnetic field magnitude is about 4 nT. The solar wind speed is currently about 500 km/s and is still slowly decreasing. The equatorial coronal hole passed the central meridian today, however not much impact is expected from this small coronal hole. The geomagnetic conditions are unsettled to quiet (Dourbes reports K=3 or less), and expect to remain so in the following hours.

Today's estimated international sunspot number (ISN): 054, based on 19 stations.

Solar indices for 04 Jun 2013

Wolf number Catania	064
10cm solar flux	110
AK Chambon La Forêt	014
AK Wingst	011
Estimated Ap	011
Estimated international sunspot number	035 - Based on 21 stations

Noticeable events summary

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

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