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Daily bulletin on solar and geomagnetic activity from the SIDC

Emesso: 2013 Sep 30 1259 UTC

SIDC Forecast

Brillamenti solari

Quiet conditions (<50% probability of C-class flares)

Geomagnetism

Quiet (A<20 and K<4)

Protoni solari

Proton event in progress (>10 MeV)

	10cm flux	Ap
30 Sep 2013	103	007
01 Oct 2013	097	007
02 Oct 2013	097	007

Bulletin

A yet unnumbered, flux emerging region in the South-Eastern solar quadrant might develop flaring potential in the coming days. A large filament in the solar north-western hemisphere erupted Sunday evening around 21:45UT. The event was associated with a long duration C1.2 flare peaking at 23:39. The GOES proton flux level has crossed the event threshold (> 10 pfu for 10 MeV). LASCO observed a full-halo CME. In STEREO-B Cor2, the plane-of the sky speed is of the order of 600km/s. In the coming 3 days, we expect quiet geomagnetic conditions. The halo-CME of midnight Sept 29/30 is expected to arrive midnight October 2/3.

Today's estimated international sunspot number (ISN): 037, based on 17 stations.

Solar indices for 29 Sep 2013

Wolf number Catania	///
10cm solar flux	103
AK Chambon La Forêt	007
AK Wingst	003
Estimated Ap	003
Estimated international sunspot number	032 - Based on 26 stations

Noticeable events summary

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

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