Viewing archive of Friday, 23 January 2015

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2015 Jan 23 1339 UTC

SIDC Forecast

Solar flares

Active (M-class flares expected, probability >=50%)

Geomagnetism

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

Solar protons

Quiet

	10cm flux	Ap
23 Jan 2015	120	008
24 Jan 2015	122	013
25 Jan 2015	124	007

Bulletin

Solar activity in past 24h has been low. NOAA AR 2268, close to the east limb, produced a C4.3 flare with peak at 02:53 UT. This region has potential for M-class flaring in the next 48h. The effect of the fast speed stream from a coronal hole has reduced in the past 24h. Solar wind speeds are at 400 km/s with magnetic fields intensity around 5 nT. Geomagnetic conditions have ranged from quiet to unsettled. The fast speed stream from another high latitude coronal hole may influence the Earth in the next 48h, most likely producing active geomagnetic conditions at most.

Today's estimated international sunspot number (ISN): 043, based on 12 stations.

Solar indices for 22 Jan 2015

Wolf number Catania	///
10cm solar flux	120
AK Chambon La Forêt	018
AK Wingst	013
Estimated Ap	013
Estimated international sunspot number	041 - Based on 11 stations

Noticeable events summary

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

All times in UTC

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