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Daily bulletin on solar and geomagnetic activity from the SIDC

Emesso: 2015 May 24 1230 UTC

SIDC Forecast

Brillamenti solari

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

Geomagnetism

Quiet (A<20 and K<4)

Protoni solari

Quiet

	10cm flux	Ap
24 May 2015	097	007
25 May 2015	097	007
26 May 2015	097	007

Bulletin

Solar activity was low and is expected to remain so in the coming 24 hours. NOAA AR 2349 and NOAA AR 2353 retain the possibility for C-class flaring. The evolution of a newly emerging, dynamic but small, active region near the solar East limb has to be followed up. Geomagnetic activity has been quiet and is expected to remains so in the coming 24 hours. A sector boundary crossing of the interplanetary magnetic field was observed yesterday May 23 around 17:30. No CME arrival is expected in the coming days. A small coronal hole is approaching the solar disc center and could eventually result in enhanced geomagnetic activity from May 28 onwards.

Today's estimated international sunspot number (ISN): 057, based on 16 stations.

Solar indices for 23 May 2015

Wolf number Catania	///
10cm solar flux	098
AK Chambon La Forêt	008
AK Wingst	004
Estimated Ap	003
Estimated international sunspot number	048 - Based on 22 stations

Noticeable events summary

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

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