Viewing archive of Monday, 15 July 2013

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2013 Jul 15 1253 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
15 Jul 2013	119	019
16 Jul 2013	117	009
17 Jul 2013	115	008

Bulletin

Six sunspot groups were reported by Catania today, and non of them was particularly active. Strongest flare among five C-class flares reported during last 24 hours flare was C3.6 flare, peaking at 10:55 UT on July 15. The flare originated from the Catania sunspot group 30 (NOAA AR 1791). We expect C-class flares and possibly, but not probably, also M-class flares. The interplanetary magnetic field magnitude is about 6 nT, and the solar wind speed is 400 km/s. The extended low-latitude coronal hole in the northern hemisphere is passing the central meridian. The arrival of the fast solar wind at the Earth is expected on July 18. The arrival of the CME from July 13, although not probable, is expected early on July 18. We expect quiet to unsettled geomagnetic conditions during following 48 hours.

Today's estimated international sunspot number (ISN): 050, based on 20 stations.

Solar indices for 14 Jul 2013

Wolf number Catania	///
10cm solar flux	113
AK Chambon La Forêt	038
AK Wingst	028
Estimated Ap	027
Estimated international sunspot number	041 - Based on 28 stations

Noticeable events summary

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

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