Viewing archive of Friday, 16 January 2015

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2015 Jan 16 1228 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
16 Jan 2015	131	007
17 Jan 2015	126	007
18 Jan 2015	122	013

Bulletin

Solar activity has been low, only minor C-class flaring in past 24 h. The largest one was a C2.6 flare from NOAA AR 2257 over the west limb (peak 16:49 UT on January 15). The situation is expected to be maintained. Geomagnetic conditions have been quiet with solar wind speeds around 400 km/s and interplanetary magnetic field intensities of 7 nT. A small coronal hole may have an influence on the Earth in about 48 h, active conditions can be reached.

Today's estimated international sunspot number (ISN): 045, based on 12 stations.

Solar indices for 15 Jan 2015

Wolf number Catania	087
10cm solar flux	131
AK Chambon La Forêt	013
AK Wingst	005
Estimated Ap	005
Estimated international sunspot number	044 - 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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