Viewing archive of Saturday, 18 January 2014

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2014 Jan 18 1513 UTC

SIDC Forecast

Solar flares

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

Geomagnetism

Quiet (A<20 and K<4)

Solar protons

Quiet

	10cm flux	Ap
18 Jan 2014	129	005
19 Jan 2014	132	008
20 Jan 2014	137	010

Bulletin

During last 24 hours sixteen C-class flares were reported, majority of them originated from the active region currently on and behind the East solar limb. The strongest flare was the C8.9 flare which peaked at 16:08 UT on January 17. The flare originated from the active region situated just behind the East solar limb and was associated with the CME directed southward from the Sun-Earth line. We expect C-class flares are probably also isolated M-class flare in the following 24 hours. The Earth is inside a slow solar wind with a speed of about 310 km/s. The interplanetary magnetic field is still stable with the magnitude between 2 and 3 nT. The glancing blow from the CME-driven shock wave, associated with the partial halo CME observed on January 14, is expected to arrive at the Earth today. Therefore we expect quiet to unsettled to geomagnetic conditions in the following hours. The CME-driven shock wave, associated with a partial halo CME (limb event) on January 16, could be expected on January 20-21.

Today's estimated international sunspot number (ISN): 082, based on 13 stations.

Solar indices for 17 Jan 2014

Wolf number Catania	///
10cm solar flux	129
AK Chambon La Forêt	006
AK Wingst	004
Estimated Ap	003
Estimated international sunspot number	054 - Based on 17 stations

Noticeable events summary

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

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