Viewing archive of Saturday, 30 August 2014

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2014 Aug 30 1241 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
30 Aug 2014	122	015
31 Aug 2014	124	010
01 Sep 2014	124	007

Bulletin

The Sun produced several small C-class flares, originating from NOAA AR 2146, AR 2149 and AR 2152. AR 2146 has now rotated around the West limb. No Earth-directed CMEs were detected. More C-class flares are expected, with a slight chance for M-class flares. Solar wind speed values ranges between 400 and 450 km/s. The magnitude of the interplanetary magnetic field remained relatively stable around 6 to 7 nT, while Bz is fluctuating between -6 and +6 nT. Geomagnetic conditions are unsettled to active and are expected remain so for the next 48 hours, due to the influence of the increased solar wind related to the equatorial coronal hole.

Today's estimated international sunspot number (ISN): 054, based on 11 stations.

Solar indices for 29 Aug 2014

Wolf number Catania	///
10cm solar flux	120
AK Chambon La Forêt	032
AK Wingst	020
Estimated Ap	023
Estimated international sunspot number	049 - Based on 22 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