Vaata pühapäev, 24 oktoober 2021 arhiivi

SIDC igapäevane bülletään päikese ja geomagnetilise aktiivsuse kohta

Välja antud: 2021 Oct 24 1232 UTC

SIDC ennustus

Päikesepursked ehk loited

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

Geomagnetism

Quiet (A<20 and K<4)

Päikese prootonid

Quiet

	10 cm vool	Ap
24 Oct 2021	090	004
25 Oct 2021	092	003
26 Oct 2021	094	006

Bülletään

Solar activity was at very low levels. NOAA Active Region (AR) 2887 (beta configuration) has showed signs of further flux emergence and has been producing B-class flares. NOAA AR 2886 (Catania sunspot region 64) remained stable. Catania sunspot group 65 decayed into a plage region. Two new active regions have also begun to rotate onto the south-east of the solar disk. Solar activity is expected to be low over the next 24 hours with C-class flares probable, particularly from NOAA AR2887 and from the new ARs now rotating onto the solar disk.

No Earth directed CMEs have been detected in the available coronagraph imagery.

The greater than 10 MeV proton flux was at nominal levels over the past 24 hours and is expected to remain so for the next 24 hours. The greater than 2 MeV electron flux remained below the 1000 pfu alert threshold and is expected to remain below this threshold during the next 24 hours. The 24h electron fluence was at nominal levels and is expected to remain so.

The solar wind speed (DSCOVR) ranged between 330 to 390 km/s. The total magnetic field ranged from 1 nT to around 6 nT. The Bz varied between -5 and +5 nT. The interplanetary magnetic field phi angle was predominantly in the negative sector (directed towards from the Sun). The solar wind speed is expected to continue to reflect a slow solar wind regime on Oct 24 and Oct 25.

Geomagnetic conditions were at quiet levels (NOAA Kp and local K Dourbes recorded values of 0-1 and 0-2, respectively). Geomagnetic conditions are expected to be quiet on Oct 24 and Oct 25.

Tänane hinnanguline rahvusvaheline päikeselaikude arv (ISN): 035, põhineb 20 jaamadel.

Päikese indeksid 23 Oct 2021

Catania Wolfi number	///
10cm päikesevoog	087
AK Chambon La Forêt	005
AK Wingst	003
Hinnanguline Ap	002
Hinnanguline rahvusvaheline päikeselaikude arv	050 - Põhineb 27 jaamal

Märkimisväärsete sündmuste kokkuvõte

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

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