Viewing archive of Saturday, 9 August 2014

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2014 Aug 09 1204 UTC

SIDC Forecast

Solar flares

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

Geomagnetism

Quiet (A<20 and K<4)

Solar protons

Quiet

	10cm flux	Ap
09 Aug 2014	115	008
10 Aug 2014	110	007
11 Aug 2014	110	007

Bulletin

Four C-class flares were observed since our last bulletin. The largest one was a C4.5 flare at 16:57 UT on August 8 in NOAA AR 2135, that has developed into a beta-gamma region. This region, as well as NOAA AR 2132, is expected to produce more C-class flares in the coming days. There is also a small chance for an M-flare. CACTus reported on a halo CME observed in LASCO images on August 8 around 16:36 UT. This full halo CME was associated to a strong eruption observed in the center of the solar disk in STEREO-a/EUVI 195 images starting at 15:55 UT. This is thus a back- sided event and therefore the CME will not be geo-effective. We expect quiet geomagnetic conditions to persist, with a chance for unsettled conditions (K maximum 3) under the possible influence of a coronal hole wind stream.

Today's estimated international sunspot number (ISN): 062, based on 15 stations.

Solar indices for 08 Aug 2014

Wolf number Catania	///
10cm solar flux	123
AK Chambon La Forêt	010
AK Wingst	014
Estimated Ap	013
Estimated international sunspot number	061 - Based on 20 stations

Noticeable events summary

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

All times in UTC

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