Viewing archive of Tuesday, 31 March 2020

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2020 Mar 31 1232 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
31 Mar 2020	069	018
01 Apr 2020	070	006
02 Apr 2020	071	001

Bulletin

Solar flaring activity was at very low levels. No significant flares have been recorded. A small and as yet unnumbered sunspot region rotated onto the disk near N30E60. 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 nominal levels over the past 24 hours and is expected to stay at nominal levels for the next 24 hours. The greater than 2MeV electron flux was at moderate levels between 12:30UT and 19:00UT. It is expected to become further enhanced over the next 24 hours. The solar wind speed near Earth increased from 420 to 530 km/s at 15:00UT and then continued to oscillate around 500 km/s (DSCOVR), as a result of the solar wind associated with the Coronal Hole which began to cross the Central Meridian on Mar 26. The Interplanetary Magnetic Field (IMF) was predominantly oriented towards the Sun (phi angle in the negative sector) with the magnitude varying between 2 and 8 nT. Bz ranged between -7 and +6 nT.

Active to minor storm (K Dourbes = 5) geomagnetic conditions were registered for the past 24 hours (K Dourbes recorded values 1-5 and NOAA Kp 1-4). Active (K Dourbes = 4) geomagnetic conditions are expected for the next 24 hours, while Earth continues to be under the influence of the fast solar wind.

Today's estimated international sunspot number (ISN): 013, based on 22 stations.

Solar indices for 30 Mar 2020

Wolf number Catania	///
10cm solar flux	069
AK Chambon La Forêt	028
AK Wingst	016
Estimated Ap	016
Estimated international sunspot number	000 - Based on 19 stations

Noticeable events summary

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

All times in UTC

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