Viewing archive of Sunday, 20 October 2013

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2013 Oct 20 1402 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
20 Oct 2013	133	007
21 Oct 2013	135	007
22 Oct 2013	140	007

Bulletin

Only C-class flares in past 24h, more are expected. The strongest was a C2.9 at 08:40 UT from NOAA AR 1868. NOAA AR 1875 has a beta-gamma configuration and could produce M-class flares. Geomangetic conditions have been quiet and are expected to remain so. There are small probabilities that the fast solar wind from a coronal hole at high northern latitudes, and the effects of the halo CME from October 16 could affect geomagnetic conditions in the next 48h.

Today's estimated international sunspot number (ISN): 080, based on 14 stations.

Solar indices for 19 Oct 2013

Wolf number Catania	///
10cm solar flux	133
AK Chambon La Forêt	007
AK Wingst	002
Estimated Ap	002
Estimated international sunspot number	092 - Based on 18 stations

Noticeable events summary

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

All times in UTC

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