Viewing archive of Saturday, 31 August 2013

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2013 Aug 31 1204 UTC

SIDC Forecast

Solar flares

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

Geomagnetism

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

Solar protons

Quiet

	10cm flux	Ap
31 Aug 2013	108	011
01 Sep 2013	109	017
02 Sep 2013	110	011

Bulletin

Solar activity was quiet the last 24 hours, but eruptive conditions are expected especially from AR NOAA 11835 has a possibility in producing an M-class flare. Current Solar Wind speed is around 420 km/s and the interplanetary magnetic filed Bz component is around -5 nT. Geomagnetic conditions where quiet in the past 24 hours, but are expected to reach up to minor storm (K=5) levels in the evening of August 31st.

Today's estimated international sunspot number (ISN): 049, based on 15 stations.

Solar indices for 30 Aug 2013

Wolf number Catania	///
10cm solar flux	108
AK Chambon La Forêt	025
AK Wingst	012
Estimated Ap	012
Estimated international sunspot number	046 - 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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