Visualizzazione archivio di martedì, 5 febbraio AM

Daily bulletin on solar and geomagnetic activity from the SIDC

Emesso: 2013 Feb 05 1210 UTC

SIDC Forecast

Brillamenti solari

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

Geomagnetism

Active conditions expected (A>=20 or K=4)

Protoni solari

Quiet

	10cm flux	Ap
05 Feb 2013	107	011
06 Feb 2013	104	014
07 Feb 2013	106	006

Bulletin

The strongest flare in last 24 hours was a C6.3 flare peaking at 08:19 UT, on February 5. The flare originated from the NOAA AR 1669, situated at the moment close to the East solar limb. We expect more C-class flares, in particular from this active region. The interplanetary magnetic field is about 3 nT. The solar wind speed is stable having value of about 350 km/s. The small low-latitude coronal hole in the southern hemisphere has reached the central meridian. We expect arrival of the associated fast flow early on February 9. The fast flow associated with the low-latitude coronal hole in the northern hemisphere should arrive late today or early tomorrow. The geomagnetic conditions in the next 48 hours should be quiet to possibly active.

Today's estimated international sunspot number (ISN): 028, based on 12 stations.

Solar indices for 4 Feb 2013

Wolf number Catania	039
10cm solar flux	107
AK Chambon La Forêt	011
AK Wingst	006
Estimated Ap	005
Estimated international sunspot number	024 - Based on 18 stations

Noticeable events summary

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

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