Viewing archive of Tuesday, 3 April 2018

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2018 Apr 03 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
03 Apr 2018	068	007
04 Apr 2018	068	005
05 Apr 2018	069	011

Bulletin

Solar activity was very low. Former NOAA actve region 2703 decayed to an area of plage. 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 remain so. Solar wind parameters variations were at background levels. Solar wind speed as registered by DSCOVR decreased from about 430 till 400 km/s. The Interplanetary Magnetic Field (IMF) was below 5 nT. Bz component varied mainly between -3 and 3 nT. Quiet geomagnetic conditions (K Dourbes between 1 and 2; NOAA Kp between 1 and 2) were registered in the past 24 hours. Mostly quiet geomagnetic levels (K Dourbes < 3) are expected on April 3 and 4. Unsettled conditions are expected on April 5 due to the possible influences of a high speed stream coming from the polar-connected positive polarity coronal hole.

Today's estimated international sunspot number (ISN): 000, based on 21 stations.

Solar indices for 02 Apr 2018

Wolf number Catania	///
10cm solar flux	068
AK Chambon La Forêt	///
AK Wingst	006
Estimated Ap	005
Estimated international sunspot number	000 - Based on 22 stations

Noticeable events summary

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

All times in UTC

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