Viewing archive of Wednesday, 10 August 2016

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2016 Aug 10 1230 UTC

SIDC Forecast

Solar flares

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

Geomagnetism

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

Solar protons

Quiet

	10cm flux	Ap
10 Aug 2016	094	019
11 Aug 2016	094	013
12 Aug 2016	093	007

Bulletin

There are four active regions observed on the visible side of the solar disc. Solar activity is low with no C-class flares reported during last 24 hours. We expect solar activity to remain low, but C-class flares are still possible in the coming hours, in particular from NOAA AR 2574 and 2571 which presently have beta and beta-gamma configuration of their photospheric magnetic field. The filament eruption from the south-east quadrant, observed today at about 02:50 UT, was associated with rather narrow CME. No Earth directed CMEs were observed in the last 24 hours.

The Earth is still inside the fast solar wind with the average speed of about 650 km/s. The interplanetary magnetic field magnitude amounts about 5 nT. Due to several intervals of the negative value of the Bz component of the interplanetary magnetic field an interval of active geomagnetic conditions (K=4) was reported this morning by local station at Dourbes while NOAA reported only Kp=3. We expect unsettled to active geomagnetic conditions in the coming hours.

Today's estimated international sunspot number (ISN): 079, based on 15 stations.

Solar indices for 09 Aug 2016

Wolf number Catania	///
10cm solar flux	092
AK Chambon La Forêt	023
AK Wingst	015
Estimated Ap	015
Estimated international sunspot number	073 - Based on 29 stations

Noticeable events summary

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

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