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Daily bulletin on solar and geomagnetic activity from the SIDC

Випущено: 2019 Apr 02 1230 UTC

SIDC Forecast

Сонячні спалахи

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

Geomagnetism

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

Сонячні протони

Quiet

	10cm flux	Ap
02 Apr 2019	069	003
03 Apr 2019	069	023
04 Apr 2019	069	021

Bulletin

The Sun did not produce any flares in the past 24 hours. The chance for a C flare in the next 24 hours, especially from beta region NOAA AR 2737, is estimated at 5%.

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 350 and 430 km/s in the past 24 hours. The Interplanetary Magnetic Field (IMF) was directed towards the Sun and its magnitude varied between about 1 and 6 nT. Bz was never below -5 nT.

Quiet to unsettled geomagnetic conditions (K Dourbes between 0 and 3; NOAA Kp between 0 and 2) were registered in the past 24 hours. Quiet to unsettled geomagnetic levels (K Dourbes < 4) are expected on April 2, with a chance for active levels (K Dourbes = 4). Active to minor storm intervals (K Dourbes = 4-5) are possible on April 3 and 4, due to the expected arrival of the high speed stream associated with a negative polarity coronal hole.

Today's estimated international sunspot number (ISN): 018, based on 17 stations.

Solar indices for 01 Apr 2019

Wolf number Catania	014
10cm solar flux	069
AK Chambon La Forêt	008
AK Wingst	007
Estimated Ap	007
Estimated international sunspot number	015 - Based on 30 stations

Noticeable events summary

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

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