Viewing archive of Friday, 21 February 2014

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2014 Feb 21 1247 UTC

SIDC Forecast

Solar flares

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

Geomagnetism

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

Solar protons

Warning condition (activity levels expected to increase, but no numeric forecast given)

	10cm flux	Ap
21 Feb 2014	156	012
22 Feb 2014	158	032
23 Feb 2014	160	019

Bulletin

Only minor C-class flares in past 24h, mainly from NOAA ARs 1976 and 1982 (this AR has potential for M-class flares). Geomagnetic conditions are currently at unsettled levels, the interplanetary magnetic field is around 7 nT and the solar wind speed close to 500 km/s. The arrival of the three CMEs from February 19 and 20 are expected on February 22 and 23, with possible increase of geomagnetic conditions up to major storm levels.

Today's estimated international sunspot number (ISN): 095, based on 15 stations.

Solar indices for 20 Feb 2014

Wolf number Catania	///
10cm solar flux	156
AK Chambon La Forêt	043
AK Wingst	039
Estimated Ap	044
Estimated international sunspot number	097 - Based on 13 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