Viewing archive of Wednesday, 27 February 2013

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2013 Feb 27 1254 UTC

SIDC Forecast

Solar flares

Quiet conditions (<50% probability of C-class flares)

Geomagnetism

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

Solar protons

Quiet

	10cm flux	Ap
27 Feb 2013	103	004
28 Feb 2013	105	006
01 Mar 2013	107	016

Bulletin

Under the influence of a recurrent coronal hole, we expect the solar wind speed to increase moderately by March 1 and trigger active geomagnetic conditions. No flaring activity is expected soon. We keep an eye on NOAA AR 1681, which is developing interesting magnetic complexity and on a new, dynamic, active region on the south east limb.

Today's estimated international sunspot number (ISN): 035, based on 07 stations.

Solar indices for 26 Feb 2013

Wolf number Catania	046
10cm solar flux	099
AK Chambon La Forêt	009
AK Wingst	006
Estimated Ap	005
Estimated international sunspot number	034 - Based on 13 stations

Noticeable events summary

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

All times in UTC

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