Vaata esmaspäev, 1 september 2014 arhiivi

Daily bulletin on solar and geomagnetic activity from the SIDC

Välja antud: 2014 Sep 01 1253 UTC

SIDC Forecast

Valid from 1230 UTC, 01 Sep 2014 until 03 Sep 2014
Päikesepursked ehk loited

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

Geomagnetism

Quiet (A<20 and K<4)

Päikese prootonid

Quiet

10cm fluxAp
01 Sep 2014125010
02 Sep 2014122011
03 Sep 2014120006

Bulletin

Six sunspot groups were reported by Catania today. The most active of them is the Catania sunspot group 36 (NOAA AR 2149) that produced seven C-class flares yesterday (including C7.1 flare peaking at 12:11 UT) and two C-class flares today (C2.1 peaking at 07:44 UT and C1.4). We expect more flaring activity on the C-level from this sunspot group, as well as from the Catania sunspot group 40 (NOAA AR 2152) that has beta-gamma configuration of its photospheric magnetic field. An isolated M-class flare is possible but unlikely. A long filament in the northern hemisphere has been crossing the solar central meridian since yesterday. In case of its eruption, a possible Earth-directed CME may result. Two partial halo CMEs were detected today, first appearing in the SOHO/LASCO C2 field of view at 00:36 and 09:24 UT respectively. Their angular widths were similar (around 150 and 130 degrees respectively), as well as were their shapes, although the first one was significantly weaker than the second one. Both CMEs seem to result from activity in the active region on the far side of the Sun (around N10W130) as observed by STEREO/EUVI, so none of them is expected to arrive at the Earth. The Earth is currently inside a slow (around 420 km/s) solar wind flow with average (around 5 nT) interplanetary magnetic field magnitude. We expect quiet geomagnetic conditions.

Today's estimated international sunspot number (ISN): 068, based on 16 stations.

Solar indices for 31 Aug 2014

Wolf number Catania///
10cm solar flux125
AK Chambon La Forêt030
AK Wingst017
Estimated Ap018
Estimated international sunspot number/// - Based on /// stations

Noticeable events summary

DayBeginMaxLõppLocStrengthOP10cmCatania/NOAARadio burst types
Puuduvad

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

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