Viewing archive of Friday, 10 July 2015

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2015 Jul 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 Jul 2015	118	005
11 Jul 2015	115	021
12 Jul 2015	115	014

Bulletin

No significant flares were recorded, with NOAA 2373 and 2384 producing a single B-class flare each. The other regions were quiet. A compact region (Catania 11) about 20 degrees to the west of NOAA 2381 is developing quickly and shows some mixed magnetic polarities. No obvious Earth-directed coronal mass ejections (CME) were observed. A 140 degrees wide CME first observed by LASCO/C2 at 00:48UT seems to have been the result of a series of very slow eruptions along a lengthy filament channel near -45 degrees latitude. The bulk of the ejected material is directed well south of the ecliptic.

There remains a good chance on a C-class flare.

Solar wind speed varied between 340 and 400 km/s, with Bz fluctuating between -4 and +3 nT. Quiet to unsettled geomagnetic conditions were observed and are expected to persist.

Active geomagnetic conditions are possible late 10 or on 11 July under the effects of the equatorial coronal hole wind stream. A minor storming episode is not excluded.

Today's estimated international sunspot number (ISN): 117, based on 21 stations.

Solar indices for 09 Jul 2015

Wolf number Catania	144
10cm solar flux	122
AK Chambon La Forêt	008
AK Wingst	006
Estimated Ap	005
Estimated international sunspot number	115 - Based on 29 stations

Noticeable events summary

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

All times in UTC

<< Go to daily overview page