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Daily bulletin on solar and geomagnetic activity from the SIDC

Emesso: 2014 Dec 01 1239 UTC

SIDC Forecast

Valid from 1230 UTC, 01 Dec 2014 until 03 Dec 2014
Brillamenti solari

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

Geomagnetism

Quiet (A<20 and K<4)

Protoni solari

Quiet

10cm fluxAp
01 Dec 2014177008
02 Dec 2014175010
03 Dec 2014172008

Bulletin

Several low-level C-class flares and one M-class flare were reported during last 24 hours. A long duration M1.8 flare, observed this morning, peaked at 06:41 UT. The M-class flare, as well as few C-class flares, originated from the Catania sunspot group 24 (NOAA AR 2222) which maintains beta-gamma configuration of its photospheric magnetic field. Currently available data give no indication about possible on disc signatures of the associated CME, therefore, we conclude that the M1.8 flare was most probably confined flare. Four out of ten currently numbered sunspot groups visible on the solar disc have beta-gamma configuration of their photospheric magnetic field and could be the source of the C-class flares and possible also an isolated M-class flare in the coming hours. No Earth directed CMEs were observed during last 24 hours. The Earth is currently inside a slow solar wind, with the speed of about 430 km/s. The interplanetary magnetic field is stable with the magnitude of about 5nT. The geomagnetic conditions are at the moment quiet to unsettled and expected to remain so in the following hours. TODAY'S ESTIMATED ISN : ///, BASED ON /// STATIONS.

Solar indices for 30 Nov 2014

Wolf number Catania///
10cm solar flux177
AK Chambon La Forêt016
AK Wingst010
Estimated Ap009
Estimated international sunspot number/// - Based on /// stations

Noticeable events summary

DayBeginMaxFineLocStrengthOP10cmCatania/NOAARadio burst types
01062606410659S21E17M1.81N24/2222

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

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