Viewing archive of Friday, 21 August 2020

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2020 Aug 21 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
21 Aug 2020	070	005
22 Aug 2020	070	003
23 Aug 2020	071	004

Bulletin

Solar flaring activity was at very low levels. No significant flares have been recorded. Solar activity is expected to remain at very low levels.

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

The greater than 10 MeV proton flux was at background levels over the past 24 hours. It is expected to stay at background levels for the next 24 hours. The greater than 2 MeV electron flux was at nominal levels over the past 24 hours and is expected to remain so over the next 24 hours.

The speed of the solar wind slowed down, varying between 295 and 330 km/s (DSCOVR). No effects of the CME on Aug 16 seem present. The polarity of the Interplanetary Magnetic Field (IMF) varied, reflecting a patchy Sun. Bz fluctuated between -2 and +2 nT. The magnitude of the magnetic field varied between 0 and 4 nT. Over the next 24 hours, the solar wind parameters will reflect quiet conditions.

The geomagnetic conditions were quiet. The values registered for the past 24 hours were 0-3 for K Dourbes and 0-1 for NOAA Kp. Quiet conditions are expected for the next 24 hours.

Today's estimated international sunspot number (ISN): 005, based on 21 stations.

Solar indices for 20 Aug 2020

Wolf number Catania	///
10cm solar flux	070
AK Chambon La Forêt	006
AK Wingst	004
Estimated Ap	003
Estimated international sunspot number	012 - Based on 30 stations

Noticeable events summary

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

All times in UTC

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