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Daily bulletin on solar and geomagnetic activity from the SIDC

Emesso: 2014 Dec 03 1210 UTC

SIDC Forecast

Valid from 1230 UTC, 03 Dec 2014 until 05 Dec 2014
Brillamenti solari

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

Geomagnetism

Quiet (A<20 and K<4)

Protoni solari

Quiet

10cm fluxAp
03 Dec 2014168007
04 Dec 2014169010
05 Dec 2014170007

Bulletin

Solar activity continues to be at the level of a low C-class flaring. The strongest reported flare in last 24 hours was a C6.5 flare (peaked at 15:55 UT) on November 2, which originated from the Catania Sunspot group 24 (NOAA AR 2222). Similarly to majority of flares originating from this active region, the C6.5 flare seem to be a confined flare i.e. without an associated CME (currently available data give no indication about possible on disc signatures of the CME). No Earth directed CMEs were observed during last 24 hours. The solar wind speed reached its maximum value, of about 650 km/s, in the morning of November 2, and it was slowly decreasing afterwards. Earth is currently inside a slow solar wind with the speed of about 430 km/s. The interplanetary magnetic field magnitude is presently about 8nT. Short intervals of the negative value of the Bz component of the interplanetary magnetic field (down to -8nT) in the evening of November 2 and early morning of November 3 resulted in the unsettled to active geomagnetic conditions (local stations Dourbes and IZMIRAN reported K=4, and NOAA reported Kp=3). The large polar coronal hole with the extent to the low latitudes (up to about S40) will be the source of the fast solar wind which might be expected at the Earth in the morning of December 6. We expect currently quiet to unsettled geomagnetic conditions to continue in the next 24 hours.

Today's estimated international sunspot number (ISN): 088, based on 08 stations.

Solar indices for 02 Dec 2014

Wolf number Catania203
10cm solar flux168
AK Chambon La Forêt017
AK Wingst013
Estimated Ap013
Estimated international sunspot number095 - Based on 09 stations

Noticeable events summary

DayBeginMaxFineLocStrengthOP10cmCatania/NOAARadio burst types
Nessuna

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

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