Viewing archive of Tuesday, 25 March 2014

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2014 Mar 25 1335 UTC

SIDC Forecast

Solar flares

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

Geomagnetism

Active conditions expected (A>=20 or K=4)

Solar protons

Warning condition (activity levels expected to increase, but no numeric forecast given)

	10cm flux	Ap
25 Mar 2014	159	007
26 Mar 2014	157	017
27 Mar 2014	156	007

Bulletin

Solar activity has been dominated by minor C-class flares from NOAA ARs 2010 and 2014. These two ARs, and AR 2015, have potential for M-class flares. A rise in the GOES proton levels (10 MeV up to 1 pfu) was seen this morning, this could correspond with the approaching shock of the CME from March 23 (low energy protons and electrons on ACE show an increase at the same time). It could also be related with activity seen at 05:30 UT around NOAA AR 2015, a flare accompanied by dimmings. There is no LASCO data yet but the COR instruments on STEREO show a CME directed towards the west. Geomagnetic conditions are quiet, solar wind speed around 400 km/s, IMF around 5 nT. Conditions may reach minor storm levels with the arrival of the March 23 CME, expected for early March 26 (midnight).

Today's estimated international sunspot number (ISN): 098, based on 16 stations.

Solar indices for 24 Mar 2014

Wolf number Catania	///
10cm solar flux	159
AK Chambon La Forêt	006
AK Wingst	004
Estimated Ap	004
Estimated international sunspot number	097 - Based on 24 stations

Noticeable events summary

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

All times in UTC

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