Viewing archive of Saturday, 5 August 2017

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2017 Aug 05 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
05 Aug 2017	074	019
06 Aug 2017	074	007
07 Aug 2017	074	007

Bulletin

Solar activity was at very low levels in the past 24 hours, and is expected to remain at very low levels (no C flares) in the next 48 hours. No earth-directed Coronal Mass Ejections (CMEs) were observed in available coronagraphic imagery. The greater than 10 MeV proton flux was at nominal levels. Under the influence of the high speed stream from a positive coronal hole, solar wind speed registered by DSCOVR varied between about 600 and 790 km/s. The Interplanetary Magnetic Field (IMF) pointed away from the Sun and its magnitude decreased from about 14 to 4 nT. Bt varied between about -10 and 7 nT. Quiet to active geomagnetic conditions (K Dourbes between 2 and 4; NOAA Kp between 2 and 4) were registered in the past 24 hours. Active to minor storm conditions (K Dourbes = 4 to 5) are possible on August 5. Quiet to unsettled geomagnetic levels are expected on August 6 and 7.

Today's estimated international sunspot number (ISN): 013, based on 25 stations.

Solar indices for 04 Aug 2017

Wolf number Catania	///
10cm solar flux	074
AK Chambon La Forêt	033
AK Wingst	024
Estimated Ap	026
Estimated international sunspot number	013 - Based on 29 stations

Noticeable events summary

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

All times in UTC

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