Viewing archive of Sunday, 18 January 2015

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2015 Jan 18 1237 UTC

SIDC Forecast

Solar flares

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

Geomagnetism

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

Solar protons

Quiet

	10cm flux	Ap
18 Jan 2015	122	013
19 Jan 2015	122	007
20 Jan 2015	122	007

Bulletin

Solar activity has been very low, the ARs visible on disk have produce no C-class flares. Only a C1.0 flare occurred at 05:52 UT, it originated in an AR behind the east limb, rotating now into view. This AR may increase solar activity. Geomagnetic conditions have been quiet and are expected to remain so. The fast speed solar wind from a small equatorial coronal hole may arrive today, it is not expected to produce more than active conditions.

Today's estimated international sunspot number (ISN): 041, based on 08 stations.

Solar indices for 17 Jan 2015

Wolf number Catania	///
10cm solar flux	122
AK Chambon La Forêt	007
AK Wingst	008
Estimated Ap	008
Estimated international sunspot number	032 - Based on 18 stations

Noticeable events summary

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

All times in UTC

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