Viewing archive of Thursday, 7 February 2013

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2013 Feb 07 1233 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
07 Feb 2013	105	013
08 Feb 2013	104	009
09 Feb 2013	103	012

Bulletin

Four sunspot groups were reported by Catania today, and non of them was particularly active. The flaring activity at the C-class level is possible, in particular from the newly emerged and fast evolving Catania sunspot group 80. The solar wind speed is about 360 km/s. The interplanetary magnetic field magnitude is slightly elevated reaching the value of about 10 nT. The compression visible in the magnetic field and density might be indication on the arrival of the fast flow associated with the low-latitude coronal hole in the northern hemisphere. The arrival of a CME-driven shock wave associated with the partial-halo CME on February 6 can be expected on early February 10. We expect quiet to possibly unsettled geomagnetic conditions in the next 48 hours.

Today's estimated international sunspot number (ISN): 039, based on 13 stations.

Solar indices for 6 Feb 2013

Wolf number Catania	///
10cm solar flux	104
AK Chambon La Forêt	006
AK Wingst	001
Estimated Ap	001
Estimated international sunspot number	029 - Based on 16 stations

Noticeable events summary

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

All times in UTC

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