Viewing archive of Tuesday, 27 August 2013

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2013 Aug 27 1206 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
27 Aug 2013	111	008
28 Aug 2013	110	007
29 Aug 2013	108	007

Bulletin

Solar activity has been low with no C-class flares in the past 24 hours. There is a very small chance for a C-class flare from AR NOAA 11835. Solar wind speed is at around 340 km/s and the interplanetary magnetic field Bz component increased to around -7 nT. Geomagnetic conditions where quiet and are expected to remain so for the next 48 hours. A new coronal hole is connected to Earth with possibly a fast solar wind stream and this will result in a current sheet crossing. The estimated arrival time of this high speed stream is around August 30th and might result in active geomagnetic conditions.

Today's estimated international sunspot number (ISN): 040, based on 15 stations.

Solar indices for 26 Aug 2013

Wolf number Catania	///
10cm solar flux	111
AK Chambon La Forêt	013
AK Wingst	006
Estimated Ap	005
Estimated international sunspot number	029 - Based on 18 stations

Noticeable events summary

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

All times in UTC

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