Viewing archive of Wednesday, 28 August 2013

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2013 Aug 28 1208 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
28 Aug 2013	111	010
29 Aug 2013	112	007
30 Aug 2013	113	014

Bulletin

Solar activity was quiet, featuring no C-class flares in the past 24 hours. AR NOAA 11835 has grown more complex and can produce C-class flares. Solar wind speed increased to around 450 km/s which is generated by a coronal hole connected to Earth on August 23d to August 25th. It was associated with a current sheet crossing. The interplanetary magnetic field Bz component reached values of around -10 nT which caused the geomagnetic conditions to reach minor storm levels. Currently the geomagnetic conditions are quiet and are expected to remain so for the next 48 hours. On the end of day 3 (August 30th) active conditions are expected due to a new coronal hole currently connected to Earth.

Today's estimated international sunspot number (ISN): 034, based on 13 stations.

Solar indices for 27 Aug 2013

Wolf number Catania	///
10cm solar flux	110
AK Chambon La Forêt	027
AK Wingst	018
Estimated Ap	018
Estimated international sunspot number	040 - Based on 22 stations

Noticeable events summary

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

All times in UTC

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