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Daily bulletin on solar and geomagnetic activity from the SIDC

Vydáno: 2014 Aug 03 1214 UTC

SIDC Forecast

Sluneční erupce

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

Geomagnetism

Quiet (A<20 and K<4)

Sluneční protony

Quiet

	10cm flux	Ap
03 Aug 2014	162	008
04 Aug 2014	160	013
05 Aug 2014	160	006

Bulletin

The strongest flare over the last 24 hours was a C2.7 peaking on 2 August at 13:28UT and produced by NOAA 2132. Together with NOAA 2121 and 2134, it produced only low-level C-class flares. The two 25-degrees long filaments in the NE and SW quadrant remained stable. No Earth-directed CMEs were observed. C-class flaring is expected, with a small chance on an M-class flare from NOAA 2130, 2132 and 2134. Solar wind speed decreased from an initial value near 450 km/s to about 390 km/s. Bz started out mostly negative near -8 nT, after which positive values dominated up to a maximum of 5 nT. There was no obvious signature in the solar wind parameters of a passing-by of the 30 July CME. Geomagnetic conditions were initially unsettled in Dourbes, with Kp even briefly reaching 4. Afterwards, quiet to unsettled conditions prevailed. Geomagnetic conditions are expected to be quiet, with some unsettled conditions possible later today and tomorrow under the influence of a coronal hole stream and the possible glancing blow from a CME related to the M-flares on 1 August. Locally, a brief active episode is not excluded.

Today's estimated international sunspot number (ISN): 110, based on 15 stations.

Solar indices for 02 Aug 2014

Wolf number Catania	///
10cm solar flux	156
AK Chambon La Forêt	017
AK Wingst	012
Estimated Ap	013
Estimated international sunspot number	123 - Based on 20 stations

Noticeable events summary

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

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