Viewing archive of Sunday, 5 May 2013

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2013 May 05 1209 UTC

SIDC Forecast

Solar flares

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

Geomagnetism

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

Solar protons

Quiet

	10cm flux	Ap
05 May 2013	138	019
06 May 2013	135	021
07 May 2013	135	010

Bulletin

Solar activity is currently dominated by NOAA AR 1739, which produced a C8 and a C8.4 flare at respectively 0049 and 0644 UT (peak time) on May 5. Active conditions are expected with M flares possible from ARs 1739 and 1734, and to a lesser extent from AR 1731. Geomagnetic activity is expected to reach active levels today and tomorrow, due an expected high speed solar wind stream linked to a coronal hole, and the possible arrival on May 6 of the CME of May 2. Current conditions are quiet as observed by the ACE spacecraft.

Today's estimated international sunspot number (ISN): 072, based on 14 stations.

Solar indices for 04 May 2013

Wolf number Catania	///
10cm solar flux	142
AK Chambon La Forêt	///
AK Wingst	007
Estimated Ap	006
Estimated international sunspot number	078 - Based on 14 stations

Noticeable events summary

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

All times in UTC

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