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Daily bulletin on solar and geomagnetic activity from the SIDC

Vydáno: 2014 Mar 08 1256 UTC

SIDC Forecast

Sluneční erupce

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

Geomagnetism

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

Sluneční protony

Quiet

	10cm flux	Ap
08 Mar 2014	146	005
09 Mar 2014	142	021
10 Mar 2014	140	008

Bulletin

There are currently 7 sunspot groups visible, all are small and have a simple magnetic configuration. Five C-class flares were recorded. The strongest was a C3-flare peaking at 00:07UT in a new region near the southeast limb. The two most notable CMEs detected over the last 24 hours, seen first by LASCO/C2 at resp. 12:12UT and 13:36UT, are related to backside events and have no Earth-directed component. Eruptive flaring conditions are expected. Over the last 24 hours, solar wind speed has gradually decreased to values near 370-400 km/s, with Bz varying between -4nT and +4nT. A small coronal hole on the southern hemisphere may reach the central meridian (CM) early on 9 March with possible geomagnetic influences on 12-13 March. Geomagnetic conditions have been quiet and are expected to remain so until the arrival of the coronal hole solar wind stream (CM passage 5 March). This may result in episodes of active geomagnetic conditions starting later today or tomorrow 9 March.

Today's estimated international sunspot number (ISN): 085, based on 17 stations.

Solar indices for 07 Mar 2014

Wolf number Catania	///
10cm solar flux	148
AK Chambon La Forêt	///
AK Wingst	003
Estimated Ap	003
Estimated international sunspot number	094 - Based on 24 stations

Noticeable events summary

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

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