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Daily bulletin on solar and geomagnetic activity from the SIDC

Emesso: 2015 Aug 12 1230 UTC

SIDC Forecast

Brillamenti solari

C-class flares expected, (probability >=50%)

Geomagnetism

Quiet (A<20 and K<4)

Protoni solari

Quiet

	10cm flux	Ap
12 Aug 2015	100	010
13 Aug 2015	101	009
14 Aug 2015	098	009

Bulletin

The strongest flare reported during last 24 hours was the C1.0 flare peaking at 15:15 UT, on August 11. We expect B-class flares and possibly also an isolated C-class flare in the coming hours, in particular from the NOAA AR 2396 and rather fast growing NOAA AR 2400. No Earth directed CMEs were observed during last 24 hours.

The Earth is currently inside the slow solar wind. The with speed is fluctuating between 370 and 430 km/s, and the interplanetary magnetic field magnitude is about 7nT. The fast flow from the equatorial coronal hole, which reached the central meridian this morning, might arrive on August 15. The geomagnetic conditions are presently quiet and we expect them to remain so in the coming hours.

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

Solar indices for 11 Aug 2015

Wolf number Catania	///
10cm solar flux	103
AK Chambon La Forêt	013
AK Wingst	010
Estimated Ap	010
Estimated international sunspot number	076 - Based on 31 stations

Noticeable events summary

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

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