Viewing archive of Tuesday, 25 June 2013

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2013 Jun 25 1239 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
25 Jun 2013	114	010
26 Jun 2013	112	011
27 Jun 2013	110	011

Bulletin

Solar activity has been eruptive during the past 24 hours, featuring a C2.0 and a C3.0 flare, both from NOAA AR 11775. More C flares are probable within the next 48 hours, with a slight chance for an M flare. A filament eruption took place near 30N 15-45E on June 24, around 23h UT. This material is not expected to travel to Earth. The solar wind is still in a coronal hole high speed stream regime, with solar wind speeds ranging between about 500 km/s and 570 km/s, while the IMF decreased from 6 to 4 nT. Solar wind speeds are expected to remain high, but continue their gradual decrease on June 25 and 26. Geomagnetic activity was at quiet to active levels (K Dourbes between 1 and 4; NOAA Kp between 2 and 4) during the past 24 hours. Quiet conditions (K Dourbes < 4) are expected for June 25 to 27.

Today's estimated international sunspot number (ISN): 050, based on 11 stations.

Solar indices for 24 Jun 2013

Wolf number Catania	112
10cm solar flux	121
AK Chambon La Forêt	023
AK Wingst	018
Estimated Ap	018
Estimated international sunspot number	071 - Based on 20 stations

Noticeable events summary

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

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