Viewing archive of Thursday, 15 January 2015

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2015 Jan 15 1238 UTC

SIDC Forecast

Solar flares

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

Geomagnetism

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

Solar protons

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

	10cm flux	Ap
15 Jan 2015	142	013
16 Jan 2015	140	007
17 Jan 2015	137	007

Bulletin

NOAA AR 2257 has rotated over the west limb, without it solar activity has decreased significantly in the past hours. It produced still the strongest flare of the last 24h, an M2.2 flare with peak at 12:58 UT on January 14. Only minor C-class flaring has been observed after. Geomagnetic conditions are quiet. Solar wind speed is about 450 km/s with magnetic field magnitude of 6 nT. The CME from January 12 can still arrive today and produce active conditions, with isolated minor storm period.

Today's estimated international sunspot number (ISN): 043, based on 06 stations.

Solar indices for 14 Jan 2015

Wolf number Catania	///
10cm solar flux	142
AK Chambon La Forêt	009
AK Wingst	008
Estimated Ap	007
Estimated international sunspot number	056 - 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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