Viewing archive of Wednesday, 3 April 2013

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2013 Apr 03 1227 UTC

SIDC Forecast

Solar flares

Eruptive (C-class flares expected, probability >= 50%)

Geomagnetism

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

Solar protons

Quiet

	10cm flux	Ap
03 Apr 2013	122	003
04 Apr 2013	122	019
05 Apr 2013	123	015

Bulletin

Solar activity has been eruptive during the past 24 hours, with two C flares produced by NOAA AR 11708, the brightest one being a C2.7 flare peaking around 09:43 UT on April 3. More C flares are expected within the next 48 hours, with a slight chance for an M flare, especially from NOAA AR 11708 in which flux and sunspots are currently emerging. Geomagnetic activity was at quiet levels (K Dourbes between 0 and 3; NOAA Kp between 0 and 2) during the past 24 hours. Quiet (K Dourbes < 4) to active (K Dourbes = 4) conditions are predicted for April 3 to 5 due to an expected gradual rise in solar wind speed as a result of a coronal hole high-speed stream passing by.

Today's estimated international sunspot number (ISN): 068, based on 13 stations.

Solar indices for 2 Apr 2013

Wolf number Catania	///
10cm solar flux	122
AK Chambon La Forêt	006
AK Wingst	006
Estimated Ap	004
Estimated international sunspot number	070 - 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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