Viewing archive of Saturday, 6 April 2019

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2019 Apr 06 1230 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
06 Apr 2019	075	016
07 Apr 2019	076	013
08 Apr 2019	076	007

Bulletin

The Sun did not produce any flares in the past 24 hours. While NOAA AR 2737 decayed into a plage, the coronal loops from old NOAA region AR 2736 have appeared at the East limb. The chance for a C flare in the next 24 hours is estimated at 15%, especially from the returning region at the East limb.

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

The greater than 10 MeV proton flux was at nominal levels in the past 24 hours, and is expected to stay at nominal levels in the next 24 hours.

Solar wind speed near Earth as registered by DSCOVR varied between about 465 and 535 km/s in the past 24 hours. The Interplanetary Magnetic Field (IMF) was directed predominantly towards the Sun and its magnitude varied between about 1 and 7 nT. Bz was never below -5 nT.

Quiet to unsettled geomagnetic conditions (K Dourbes between 2 and 3; NOAA Kp between 2 and 3) were registered in the past 24 hours. Active intervals (K Dourbes = 4) are possible on April 6 and the first half of April 7, with a slight chance for minor storm levels (K Dourbes = 5) due to the influence from isolated negative polarity coronal holes. Quiet to unsettled levels (K Dourbes < 4) are expected in the second half of April 7 and on April 8.

Today's estimated international sunspot number (ISN): 000, based on 10 stations.

Solar indices for 05 Apr 2019

Wolf number Catania	///
10cm solar flux	072
AK Chambon La Forêt	019
AK Wingst	016
Estimated Ap	016
Estimated international sunspot number	007 - Based on 25 stations

Noticeable events summary

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

All times in UTC

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