Viewing archive of Tuesday, 23 April 2013

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2013 Apr 23 1040 UTC

SIDC Forecast

Solar flares

Quiet conditions (<50% probability of C-class flares)

Geomagnetism

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

Solar protons

Warning condition

	10cm flux	Ap
23 Apr 2013	115	012
24 Apr 2013	117	020
25 Apr 2013	117	004

Bulletin

Enhanced geomagnetic conditions are expected as a result from a high speed solar wind outflow from a recurrent coronal hole in the Southern solar hemisphere. Meanwhile, the flaring potential of NOAA active region 1726 is decreasing, yet major C-flares are still possible. The proton flux levels are further decreasing and returning to background levels.

Today's estimated international sunspot number (ISN): 047, based on 07 stations.

Solar indices for 22 Apr 2013

Wolf number Catania	///
10cm solar flux	113
AK Chambon La Forêt	006
AK Wingst	006
Estimated Ap	004
Estimated international sunspot number	063 - Based on 19 stations

Noticeable events summary

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

All times in UTC

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