Viewing archive of Saturday, 17 November 2018

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2018 Nov 17 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
17 Nov 2018	072	003
18 Nov 2018	072	004
19 Nov 2018	072	004

Bulletin

There were no flares on the visible solar disc of the Sun in the past 24 hours. The chance for a C flare in the next 24 hours is estimated at 10%.

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.

In the past 24 hours, solar wind speed near Earth as registered by DSCOVR varied between about 315 and 365 km/s, with current values around 330 km/s. The Interplanetary Magnetic Field (IMF) was predominantly directed towards the Sun and its magnitude varied between about 0 and 6 nT. Bz was never below -5 nT.

Quiet geomagnetic conditions (K Dourbes between 0 and 2; NOAA Kp between 0 and 1) were registered in the past 24 hours. Quiet to unsettled conditions (K Dourbes < 4) are expected on November 17, 18 and 19.

Today's estimated international sunspot number (ISN): 016, based on 18 stations.

Solar indices for 16 Nov 2018

Wolf number Catania	///
10cm solar flux	071
AK Chambon La Forêt	005
AK Wingst	002
Estimated Ap	001
Estimated international sunspot number	015 - Based on 13 stations

Noticeable events summary

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

All times in UTC

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