Viewing archive of Monday, 11 February 2013

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2013 Feb 11 1221 UTC

SIDC Forecast

Solar flares

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

Geomagnetism

Quiet (A<20 and K<4)

Solar protons

Quiet

	10cm flux	Ap
11 Feb 2013	109	003
12 Feb 2013	108	013
13 Feb 2013	105	007

Bulletin

Solar activity was very low during the last 24 hours, with a soft Xray background in the low B level. There is a slight risk for an isolated C class flare from NOAA AR 1670, but the next 48 hours are expected to be mostly quiet in terms of flaring activity. Geomagnetic activity is expected to be low to unsettled for the next 48 hours, with the expected arrival, by mid-day, Feb. 12, of the CME of Feb. 9. Unsettled activity, at most, is foreseen from this event, as the bulk of the CME is passing northward of the Earth. Currently, quiet conditions are observed by the ACE spacecraft.

Today's estimated international sunspot number (ISN): 035, based on 03 stations.

Solar indices for 10 Feb 2013

Wolf number Catania	///
10cm solar flux	106
AK Chambon La Forêt	010
AK Wingst	006
Estimated Ap	004
Estimated international sunspot number	031 - Based on 14 stations

Noticeable events summary

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

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