Viewing archive of Thursday, 23 April 2020

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2020 Apr 23 1231 UTC

SIDC Forecast

Solar flares

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

Geomagnetism

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

Solar protons

Quiet

	10cm flux	Ap
23 Apr 2020	070	011
24 Apr 2020	071	013
25 Apr 2020	071	007

Bulletin

Solar X-ray flux remained below B level. There are no spotted regions on disk and Solar flaring is expected to remain below C level over the next days.

There were no Earth directed Coronal Mass Ejections (CMEs) observed in the available coronagraphic imagery.

The greater than 10 MeV proton flux was at nominal levels over the past 24 hours and is expected to stay at nominal levels. The greater than 2 MeV electron flux enhanced slightly over the past 24 hours. A further slight increase of the electron flux over the next days may be expected associated to ongoing slightly elevated Solar wind conditions.

Solar wind remained slightly enhanced with an overall decaying Solar wind speed, currently at around 400 km/s. The total magnetic field was at or below a nominal 5nT. Bz was variable and the magnetic field phi angle mostly in the negative sector. Solar wind is expected to remain enhanced over the next 24-48 hours before returning to nominal conditions.

Geomagnetic conditions were quiet (NOAA Kp 1-2, local K Dourbes 0-2). Geomagnetic conditions are expected to be quiet to unsettled with an occasional active episode possible.

Today's estimated international sunspot number (ISN): 000, based on 29 stations.

Solar indices for 22 Apr 2020

Wolf number Catania	///
10cm solar flux	071
AK Chambon La Forêt	009
AK Wingst	012
Estimated Ap	010
Estimated international sunspot number	000 - Based on 34 stations

Noticeable events summary

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

All times in UTC

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