Viewing archive of Tuesday, 9 December 2014

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2014 Dec 09 1225 UTC

SIDC Forecast

Solar flares

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

Geomagnetism

Quiet (A<20 and K<4)

Solar protons

Quiet

	10cm flux	Ap
09 Dec 2014	135	010
10 Dec 2014	135	005
11 Dec 2014	145	006

Bulletin

Solar activity has slightly increased with several C-class flares, originating from NOAA active region 2230. The strongest flares were C8.1 and C8.6 flares, probably not accompanied by a CME. NOAA 2230 has a beta configuration of it's photospheric magnetic field and it's trailing part has grown in size. No Earth directed CMEs were observed. Flares at the C-level are expected, with an increased chance for M-flares (30% probability). The solar wind speed reached high values (up to 700 km/s) during the first half of the period and then decreased to current values near 530 km/s. The magnitude of the interplanetary magnetic field is stable around 5 nT. A few time slots of active conditions were reached (to 4 for local K at Dourbes and estimated NOAA Kp). Quiet to unsettled magnetic conditions are expected.

Today's estimated international sunspot number (ISN): 051, based on 08 stations.

Solar indices for 08 Dec 2014

Wolf number Catania	///
10cm solar flux	133
AK Chambon La Forêt	035
AK Wingst	020
Estimated Ap	021
Estimated international sunspot number	045 - Based on 18 stations

Noticeable events summary

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

All times in UTC

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