Viewing archive of Tuesday, 11 February 2014

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2014 Feb 11 1256 UTC

SIDC Forecast

Solar flares

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

Geomagnetism

Quiet (A<20 and K<4)

Solar protons

Quiet

	10cm flux	Ap
11 Feb 2014	161	010
12 Feb 2014	163	008
13 Feb 2014	165	005

Bulletin

During last 24 hours the flaring activity was at the low C-class level, with an exception of the isolated M-class flare observed this morning. Majority of the flares (including the M-class flare) originated from the Catania sunspot group 36 (NOAA AR 1974). The impulsive M1.7 flare which peaked at 03:31 UT on February 11 was accompanied with an EIT wave and coronal dimmings. The currently available data do not show CME associated with this flare. We expect flaring activity on the C-level, with the possibility of an isolated M-class flare. The solar wind speed is currently around 450 km/s, and the interplanetary magnetic field magnitude is stable amounting about 6 nT. We expect quiet to unsettled (K<4) geomagnetic conditions in the coming hours.

Today's estimated international sunspot number (ISN): 115, based on 12 stations.

Solar indices for 10 Feb 2014

Wolf number Catania	///
10cm solar flux	161
AK Chambon La Forêt	022
AK Wingst	012
Estimated Ap	013
Estimated international sunspot number	096 - Based on 11 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