Viewing archive of Thursday, 5 April 2018

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2018 Apr 05 1235 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
05 Apr 2018	069	006
06 Apr 2018	069	010
07 Apr 2018	069	011

Bulletin

Over the past 24 hours solar activity has been low with no spotted regions on the solar disk. No flares have been recorded. No Earth directed Coronal Mass Ejections (CMEs) have been detected. The greater than 10MeV proton flux remained at background levels over the past 24 hours. A low latitude negative polarity coronal hole currently located in the eastern hemisphere is approaching central meridian. Solar activity is expected to remain low over the next 24 hours. Only B-class flares can be expected. The solar wind speed has been slowly increasing from around 330 to 380 km/s over the past 24 hours. The total magnetic field strength has fluctuated between 1 nT and 7 nT. The Bz component has fluctuated between -3 nT and +4.5 nT. Geomagnetic conditions ranged Kp index between 1-3 (NOAA) and local K index between 1-3 (Dourbes) over the past 24 hours. Mostly quiet to unsettled geomagnetic levels are expected today and tomorrow. Active conditions can be expected from April 7 (late) due to the influences of a high speed stream coming from the low-latitude negative polarity coronal hole.

Today's estimated international sunspot number (ISN): 000, based on 16 stations.

Solar indices for 04 Apr 2018

Wolf number Catania	///
10cm solar flux	069
AK Chambon La Forêt	013
AK Wingst	006
Estimated Ap	006
Estimated international sunspot number	000 - Based on 23 stations

Noticeable events summary

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

All times in UTC

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