Vaata laupäev, 13 aprill 2013 arhiivi

SIDC igapäevane bülletään päikese ja geomagnetilise aktiivsuse kohta

Välja antud: 2013 Apr 13 1248 UTC

SIDC ennustus

Päikesepursked ehk loited

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

Geomagnetism

Severe geomagnetic storm expected (A>=100 or K>=7)

Päikese prootonid

Warning condition

	10 cm vool	Ap
13 Apr 2013	140	039
14 Apr 2013	142	045
15 Apr 2013	143	008

Bülletään

Catania sunspot groups 40 and 43 (NOAA ARs 1718 and 1719 respectively) show the signs of decay, although these two active regions (as well as Catania sunspot group 45, NOAA AR 1721) have beta-gamma configuration of the photospheric magnetic field. M3.3 flare was detected on April 12 peaking at 20:38 UT in the Catania sunspot group 40 (NOAA AR 1718). It was not associated with a CME. The delta sunspot in the Catania sunspot group 43 (NOAA AR 1719) does not exist anymore, so an X-flare (and an SEP event) is not very likely (although an Earth-directed CME remains possible). We expect further flaring activity on the M-level, with a non-negligible chance for an isolated X-class flare. The proton flux at energies above 10 MeV is currently below the SEP event threshold, although it still exceeds significantly the background level. In such a situation, a relatively small increase of the proton flux at the expected shock arrival may lead to crossing the SEP event threshold again. The Earth is currently inside a slow (around 400 km/s) solar wind flow with average (around 4 nT) interplanetary magnetic field magnitude. We expect quiet geomagnetic conditions until the arrival (expected later today) of the interplanetary disturbance produced by the halo CME of April 11. The occurrence of a strong geomagnetic storm (K index around 7) will be probable.

Tänane hinnanguline rahvusvaheline päikeselaikude arv (ISN): 080, põhineb 13 jaamadel.

Päikese indeksid 12 Apr 2013

Catania Wolfi number	125
10cm päikesevoog	138
AK Chambon La Forêt	010
AK Wingst	005
Hinnanguline Ap	004
Hinnanguline rahvusvaheline päikeselaikude arv	081 - Põhineb 20 jaamal

Märkimisväärsete sündmuste kokkuvõte

Andmed on esitanud Päikeseinfektide Andmeanalüüsi Keskus (Solar Influences Data Analysis Center)© - SIDC - Töötleb SpaceWeatherLive

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