Viewing archive of Tuesday, 17 September 2013

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2013 Sep 17 1229 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
17 Sep 2013	093	011
18 Sep 2013	093	008
19 Sep 2013	093	007

Bulletin

Solar activity is very low, with the background X-ray flux of a low B-class level. No changes of solar activity are foreseen in the following 48 hours. The Earth is still inside a slow solar wind flow with the speed of about 350 km/s. The interplanetary magnetic field magnitude is 6 nT. The geomagnetic conditions are quiet to moderate and expected to remain so. The possible arrival of the fast speed stream from the small equatorial coronal hole, during the following hours, is not expected to result in the change of the current geomagnetic conditions.

Today's estimated international sunspot number (ISN): 023, based on 09 stations.

Solar indices for 16 Sep 2013

Wolf number Catania	///
10cm solar flux	095
AK Chambon La Forêt	009
AK Wingst	004
Estimated Ap	003
Estimated international sunspot number	017 - Based on 18 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