Viewing archive of Tuesday, 9 July 2013

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2013 Jul 09 1209 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
09 Jul 2013	118	003
10 Jul 2013	115	003
11 Jul 2013	115	005

Bulletin

Current solar activity, with several C-class flares, originates from Catania sunspot groups 24 and 26 (NOAA AR 1785 and 1787). Catania group 24 slightly decreased in size, but remains it's magnetic complexity. Catania group 26 has increased in size and complexity (now also having a delta component in it's photospheric magnetic field). C-class flaring activity is expected, with a slight chance for a M-class flare. Solar wind speed as observed by ACE is at 320 km/s and the magnitude of the interplanetary magnetic field is up to 8 nT with a Bz varying from -5 to +5 nT. Geomagnetic conditions are quiet and are expected to remain so for the next 48 hours.

Today's estimated international sunspot number (ISN): 075, based on 13 stations.

Solar indices for 08 Jul 2013

Wolf number Catania	145
10cm solar flux	119
AK Chambon La Forêt	007
AK Wingst	004
Estimated Ap	005
Estimated international sunspot number	082 - Based on 29 stations

Noticeable events summary

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

All times in UTC

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