Viewing archive of Saturday, 7 September 2013

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2013 Sep 07 1300 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
07 Sep 2013	100	007
08 Sep 2013	102	007
09 Sep 2013	104	007

Bulletin

Solar activity has been eruptive during the past 24 hours, featuring a C1.0 flare from returning NOAA AR 11831 near the East limb, peaking at 22:50 UT on September 6. There is a chance for more C flares within the next 48 hours. The solar wind decreased from 420 to 360 km/s in the past 24 hours. In the same period, the Interplanetary Magnetic Field was low with values between 4 and 5 nT. The geomagnetic activity was at quiet levels (K Dourbes between 0 and 3; NOAA Kp between 1 and 2) during the past 24 hours. Quiet geomagnetic conditions (K Dourbes < 4) are expected for September 7 to 9.

Today's estimated international sunspot number (ISN): 028, based on 06 stations.

Solar indices for 06 Sep 2013

Wolf number Catania	065
10cm solar flux	101
AK Chambon La Forêt	012
AK Wingst	006
Estimated Ap	006
Estimated international sunspot number	034 - Based on 23 stations

Noticeable events summary

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

All times in UTC

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