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Daily bulletin on solar and geomagnetic activity from the SIDC

Vydáno: 2013 Jul 28 1309 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
28 Jul 2013	106	010
29 Jul 2013	104	004
30 Jul 2013	105	004

Bulletin

Several weak C-class flares were detected during the last 24 hours in Catania sunspot groups 33 (NOAA AR 1793, currently behind the north-west limb) and 35 (NOAA AR 1800). We expect flaring activity to continue at the C-level (with an M-class flare unlikely), especially in the Catania sunspot group 35 (NOAA AR 1800) that keeps the beta-gamma configuration of its photospheric magnetic field. The Earth is currently inside a slow (around 440 km/s) solar wind flow with slightly elevated (around 6 nT) interplanetary magnetic field magnitude. We expect quiet to unsettled geomagnetic conditions.

Today's estimated international sunspot number (ISN): 048, based on 09 stations.

Solar indices for 27 Jul 2013

Wolf number Catania	///
10cm solar flux	108
AK Chambon La Forêt	020
AK Wingst	014
Estimated Ap	014
Estimated international sunspot number	047 - Based on 17 stations

Noticeable events summary

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

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