Viewing archive of Sunday, 7 August 2016

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2016 Aug 07 1230 UTC

SIDC Forecast

Solar flares

C-class flares expected, (probability >=50%)

Geomagnetism

Minor storm expected (A>=30 or K=5)

Solar protons

Quiet

	10cm flux	Ap
07 Aug 2016	086	010
08 Aug 2016	086	023
09 Aug 2016	086	018

Bulletin

Solar activity was low in the past 24 hours. NOAA AR 2571 produced two low C flares. The brightest flare was a C1.7 flare peaking at 10:27 UT on August 7. More C flares are expected in the next 24 hours. In the past 24 hours, solar wind speed measured by DSCOVR decreased from about 600 to 550 km/s, indicating waning high speed stream influence. The magnitude of the Interplanetary Magnetic Field varied between about 4 and 7 nT. In the past 24 hours, quiet to unsettled geomagnetic levels were registered (K Dourbes between 2 and 3; NOAA Kp between 2 and 4). Quiet to unsettled levels (K Dourbes < 4) are expected on August 7, with a slight chance for active levels (K Dourbes = 4). Active to minor storm conditions (K Dourbes =4-5) are possible on August 8, with the expected arrival of a high speed stream from an isolated, positive equatorial coronal hole. Active levels are possible on August 9, as the influence of the new coronal hole high speed stream wanes.

Today's estimated international sunspot number (ISN): 049, based on 23 stations.

Solar indices for 06 Aug 2016

Wolf number Catania	///
10cm solar flux	083
AK Chambon La Forêt	024
AK Wingst	014
Estimated Ap	015
Estimated international sunspot number	038 - Based on 31 stations

Noticeable events summary

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

All times in UTC

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