Viewing archive of Friday, 13 January 2017

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2017 Jan 13 1250 UTC

SIDC Forecast

Solar flares

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

Geomagnetism

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

Solar protons

Quiet

	10cm flux	Ap
13 Jan 2017	076	007
14 Jan 2017	077	007
15 Jan 2017	078	014

Bulletin

The first C-class flare (C3.8) of 2017 occurred on 12 January at 16:18 UT (peak), from new AR NOAA 2625 (that rotated into view yesterday). It was accompanied by a CME that will not affect Earth. This AR can produce more C-class flares.

No Earth directed Coronal Mass Ejections (CMEs) have been detected. Solar protons have remained at background levels over the past 24 hours. Geomagnetic conditions have ranged between K=2 and K=3. Solar wind speed is now at 360 km/s with interplanetary magnetic fields of 5 nT. The southern extension of the northern polar coronal hole may affect the Earth within 48 h, with K values up to 5.

Today's estimated international sunspot number (ISN): 026, based on 18 stations.

Solar indices for 12 Jan 2017

Wolf number Catania	011
10cm solar flux	076
AK Chambon La Forêt	007
AK Wingst	007
Estimated Ap	005
Estimated international sunspot number	011 - 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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