Viewing archive of Tuesday, 8 October 2013

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2013 Oct 08 1228 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
08 Oct 2013	114	010
09 Oct 2013	117	007
10 Oct 2013	120	016

Bulletin

Solar activity has been rather low in the past 24 hours, with a C2.3 flare occurring in NOAA AR 1856, on October 07, 1540 UT (peak time). It doesn't appear to be associated with a CME. A filament eruption occurred on October 8, after 0800 UT, close to the North-East limb. It is associated with a CME, which is not geoeffective. We expect eruptive conditions (C flares possible) for the next 48 hours, as AR 1856 is still capable of an isolated C-class flare. To a lesser extent, NOAA AR 1861 might also produce a isolate C-class event. Geomagnetic activity is currently very low and is expected to remain so for the next 48 hours. Unsettled to active conditions are foreseen by the end of October 10, due to the possible arrival of the CME observed on October 6, combined with the influence of a small coronal hole in the northern hemisphere.

Today's estimated international sunspot number (ISN): 066, based on 14 stations.

Solar indices for 07 Oct 2013

Wolf number Catania	136
10cm solar flux	112
AK Chambon La Forêt	006
AK Wingst	004
Estimated Ap	004
Estimated international sunspot number	052 - Based on 26 stations

Noticeable events summary

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

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