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Daily bulletin on solar and geomagnetic activity from the SIDC

Emesso: 2014 Dec 10 1224 UTC

SIDC Forecast

Brillamenti solari

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

Geomagnetism

Active conditions expected (A>=20 or K=4)

Protoni solari

Quiet

	10cm flux	Ap
10 Dec 2014	148	014
11 Dec 2014	152	007
12 Dec 2014	155	006

Bulletin

Solar activity was low with several C-class flares originating from NOAA active region 2230, which currently has developed to a beta-gamma region. The strongest flare was a C6.2 flare, peaking at 15:28 UT on December 9. No Earth directed CMEs were observed. Flaring activity at the C-level is expected. The solar wind speed varied between 450 and 550 km/s, but is gradually declining, as observed by ACE and SOHO/Celias. The magnitude of the interplanetary magnetic field reached a maximum of 8 nT. Geomagnetic conditions were quiet to active, related to effects of the CH high speed stream. Quiet to unsettled conditions are expected, with some chance for a few time slots of active to minor storm conditions.

Today's estimated international sunspot number (ISN): 062, based on 12 stations.

Solar indices for 09 Dec 2014

Wolf number Catania	103
10cm solar flux	140
AK Chambon La Forêt	028
AK Wingst	018
Estimated Ap	019
Estimated international sunspot number	050 - Based on 17 stations

Noticeable events summary

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

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