Viewing archive of Thursday, 26 March 2015

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2015 Mar 26 1237 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
26 Mar 2015	142	008
27 Mar 2015	145	007
28 Mar 2015	143	008

Bulletin

Solar activity remains low with only few C-class flares reported during the last 24 hours. The strongest reported flare was a C3.3 flare on March 25 (peak at 16:45 UT) originating from the Catania sunspot group 13 (NOAA AR 2305). This active region maintains the beta-gamma-delta configuration of its photospehric magnetic field and therefore still has the possibility for producing C-class and M-class flares in the course of coming hours. No Earth directed CMEs were observed during last 24 hours. The solar wind speed decreased to the value of about 450 km/s and the interplanetary magnetic field is stable with the magnitude of about 6nT. The geomagnetic conditions are at the moment quiet, we expect quiet to unsettled geomagnetic conditions in the following 24 hours.

Today's estimated international sunspot number (ISN): 079, based on 08 stations.

Solar indices for 25 Mar 2015

Wolf number Catania	///
10cm solar flux	138
AK Chambon La Forêt	021
AK Wingst	015
Estimated Ap	015
Estimated international sunspot number	081 - Based on 20 stations

Noticeable events summary

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

All times in UTC

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