Viewing archive of Saturday, 24 March 2018

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2018 Mar 24 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
24 Mar 2018	068	013
25 Mar 2018	068	026
26 Mar 2018	068	013

Bulletin

Solar activity remained 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 stay at very low levels.

Solar wind conditions were enhanced for most of the period. Solar wind speed increased from an initial 430 km/s to peak values near 510 km/s around 16UT and 19UT, ending the period in the 390-420 km/s range (DSCOVR). Bz oscillated between -4 and +4 nT. The interplanetary magnetic field was predominantly directed towards the Sun, with a positive interval from 19-05UT. Geomagnetic activity was at quiet to unsettled levels, with active conditions observed in Kp and by Dourbes during the 18-21UT and 21-24UT intervals.

Quiet to active geomagnetic conditions are expected with a chance on minor storming episodes in response to the solar wind stream associated with the extension of the negative polarity southern polar CH.

Today's estimated international sunspot number (ISN): 000, based on 18 stations.

Solar indices for 23 Mar 2018

Wolf number Catania	///
10cm solar flux	068
AK Chambon La Forêt	022
AK Wingst	020
Estimated Ap	020
Estimated international sunspot number	000 - Based on 22 stations

Noticeable events summary

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

All times in UTC

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