Viewing archive of Thursday, 28 November 2013

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2013 Nov 28 1358 UTC

SIDC Forecast

Solar flares

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

Geomagnetism

Quiet (A<20 and K<4)

Solar protons

Quiet

	10cm flux	Ap
28 Nov 2013	129	001
29 Nov 2013	133	001
30 Nov 2013	136	005

Bulletin

Two C-class flare sin past 24h. NOAA AR 1906 produced a C1.4 flare peaking at 00:41 UT, the other one was seen from behind the west limb. More C-class flares can be expected. A partial halo CME was seen by LASCO-C2 at 15:13 UT on November 27, related to a filament eruption in the northern hemisphere. This eruption is mostly directed to the north, but a glancing blow to the Earth is possible. The calculated speed is 540 km/s, giving a probable arrival on November 30 around 17:00 UT. Solar wind speed is very low (260 km/s) with magnetic field around 5nT. Geomagnetic conditions have been quiet and are expected to remain so.

Today's estimated international sunspot number (ISN): 073, based on 07 stations.

Solar indices for 27 Nov 2013

Wolf number Catania	100
10cm solar flux	129
AK Chambon La Forêt	///
AK Wingst	001
Estimated Ap	002
Estimated international sunspot number	054 - 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