Viewing archive of Friday, 12 July 2013

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2013 Jul 12 1153 UTC

SIDC Forecast

Solar flares

Eruptive (C-class flares expected, probability >=50%)

Geomagnetism

Minor storm expected (A>=30 or K=5)

Solar protons

Quiet

	10cm flux	Ap
12 Jul 2013	110	011
13 Jul 2013	106	038
14 Jul 2013	106	017

Bulletin

During the last 24 hours three C-class flares originated from Catania sunspot group 24 (NOAA AR 1785). Further C-class flaring activity is likely from this region. No Earth effective CMEs were observed during this period. Current geomagnetic conditions are quiet to unsettled (K=1 to 3). Geomagnetic storm levels (K=5 to maximally 6) can be reached from tomorrow on due to the arrival (expected around 13h UT on the 13th) of the CME that erupted on the 9th.

Today's estimated international sunspot number (ISN): 050, based on 13 stations.

Solar indices for 11 Jul 2013

Wolf number Catania	102
10cm solar flux	113
AK Chambon La Forêt	030
AK Wingst	021
Estimated Ap	024
Estimated international sunspot number	052 - Based on 23 stations

Noticeable events summary

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

All times in UTC

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