Viewing archive of Thursday, 22 March 2018

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2018 Mar 22 1230 UTC

SIDC Forecast

Solar flares

Quiet conditions (<50% probability of C-class flares)

Geomagnetism

Quiet (A<20 and K<4)

Solar protons

Quiet

	10cm flux	Ap
22 Mar 2018	069	004
23 Mar 2018	068	013
24 Mar 2018	068	023

Bulletin

Solar activity was at very low levels. The Sun is spotless. No earth-directed coronal mass ejections (CMEs) were observed in available coronagraphic imagery. The greater than 10 MeV proton flux was at nominal levels.

Solar activity is expected to remain at very low levels.

Solar wind parameters are at nominal levels. Solar wind speed undulated between 320 km/s and 350 km/s, and Bz varied mostly between -4 and +3 nT (DSCOVR). The interplanetary magnetic field was mostly directed towards the Sun. Geomagnetic activity was at quiet levels.

Quiet to unsettled geomagnetic conditions are expected with a chance on an active or minor storming episode from wind streams associated with diffuse CHs. The chance on an isolated minor storming interval is likely to increase by 24 March with the expected arrival of the wind stream related to the extension of the negative polarity southern polar CH.

Today's estimated international sunspot number (ISN): 000, based on 12 stations.

Solar indices for 21 Mar 2018

Wolf number Catania	///
10cm solar flux	069
AK Chambon La Forêt	009
AK Wingst	006
Estimated Ap	004
Estimated international sunspot number	000 - Based on 28 stations

Noticeable events summary

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

All times in UTC

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