Viewing archive of Tuesday, 4 March 2014

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2014 Mar 04 1228 UTC

SIDC Forecast

Solar flares

Active (M-class flares expected, probability >=50%)

Geomagnetism

Quiet (A<20 and K<4)

Solar protons

Quiet

	10cm flux	Ap
04 Mar 2014	159	004
05 Mar 2014	159	004
06 Mar 2014	159	007

Bulletin

There are currently 8 sunspot regions on the visible solar disk, with small delta's observed in NOAA 1990 and in the trailing portion of NOAA 1991. The strongest event of the past 24 hours was an impulsive M1-flare peaking at 15:58UT in NOAA 1989, after which this sunspot group decayed significantly. Most of the C-class flaring occurred in active region NOAA 1986 which has now fully rotated behind the northwest limb. The CMEs associated with these flares were not Earth-directed. Active flaring conditions are expected, with an M-class flare most likely from active regions NOAA 1990 and 1991. Solar wind speed has been varying between 350-360 km/s, and Bz between -5nT and +6nT. A coronal hole on the northern hemisphere is approaching the central meridian and might produce active geomagnetic conditions from late 7 March onwards. Geomagnetic conditions have been quiet and are expected to remain so.

Today's estimated international sunspot number (ISN): 099, based on 12 stations.

Solar indices for 03 Mar 2014

Wolf number Catania	191
10cm solar flux	161
AK Chambon La Forêt	///
AK Wingst	006
Estimated Ap	006
Estimated international sunspot number	123 - Based on 17 stations

Noticeable events summary

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

All times in UTC

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