Viewing archive of Sunday, 28 December 2014

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2014 Dec 28 1224 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
28 Dec 2014	128	003
29 Dec 2014	120	008
30 Dec 2014	125	008

Bulletin

Solar activity has further reduced. Only two C1 flares and a few almost C flares erupted. NOAA active regions 2248 and 2249 have potential to produce a few more flares at the C-level. M-class flares are also possible, but not very likely (20%). No Earth-bound CMEs were observed. The solar wind has slowed down to about 380 km/s. The interplanetary magnetic field reached a magnitude between 5 and 10 nT, with a fluctuating Bz component. Geomagnetic conditions are quiet and are expected to remain so, with some chance for a few time slots of unsettled to active levels.

Today's estimated international sunspot number (ISN): 071, based on 16 stations.

Solar indices for 27 Dec 2014

Wolf number Catania	///
10cm solar flux	134
AK Chambon La Forêt	009
AK Wingst	007
Estimated Ap	007
Estimated international sunspot number	069 - Based on 06 stations

Noticeable events summary

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

All times in UTC

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