Viewing archive of Saturday, 23 May 2015

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2015 May 23 1231 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
23 May 2015	098	004
24 May 2015	098	004
25 May 2015	098	005

Bulletin

Solar activity is low but on an increasing trend. The flux emergence regions that were noted yesterday have developed into NOAA AR 2352 (beta) and NOAA AR 2353 (beta-gamma). The latter has produced two minor C-flares in the past hours. Also NOAA AR 2349 (beta), in the Southern hemisphere, has produced minor C-class flares. We expect more C-class flares in the coming 24 hours. Geomagnetic conditions have been quiet in the past 24 hours and are expected to remain so. The solar wind is stable at 350 km/s and there is no CME or coronal hole influence in sight.

Today's estimated international sunspot number (ISN): 048, based on 10 stations.

Solar indices for 22 May 2015

Wolf number Catania	///
10cm solar flux	099
AK Chambon La Forêt	004
AK Wingst	003
Estimated Ap	002
Estimated international sunspot number	051 - Based on 22 stations

Noticeable events summary

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

All times in UTC

<< Go to daily overview page