Vaata kolmapäev, 20 september 2023 arhiivi

SIDC igapäevane bülletään päikese ja geomagnetilise aktiivsuse kohta

Välja antud: 2023 Sep 20 1231 UTC

SIDC ennustus

Päikesepursked ehk loited

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

Geomagnetism

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

Päikese prootonid

Quiet

	10 cm vool	Ap
20 Sep 2023	166	015
21 Sep 2023	168	018
22 Sep 2023	170	007

Päikese aktiivsed piirkonnad ja pursked

There are ten active regions visible on the disk. The strongest flare of the last 24 hours was an M4.0 one from NOAA AR 3435, peaking at 20:14 UTC on 19 September. This region has developed into a beta-delta region, also NOAA ARs 3436 and 3438 have evolved in complexity (now beta-gamma magnetic field configuration). More M-class flares can be expected in the next 24 hours, X-class flares are possible but less likely.

Krooniaine massiline väljavool

No Earth directed CMEs were observed in the last 24 hours.

Krooniauk

There are two small negative coronal holes crossing the central meridian, one at the equator and one in the northern hemisphere.

Päikesetuul

In the last 24 hours, the Earth has been inside the influence of ICME and high speed solar wind, with interplanetary magnetic field reaching 11 nT (Bz down to -7 nT) and solar wind speed descending from 620 km/’s to 520 km/s.A gradual decrease into slow solar wind is expected, until the probable arrival of the CME from 17 september in about 24 hours. More disturbed solar wind conditions can be expected if the ICME arrives (although chances of this happening are low).

Geomagnetism

During the last 24 hours the geomagnetic conditions have reached minor storm levels globally (NOAA KP 5) and active levels locally (K_Bel 4), due to the ICME and high speed solar wind combination. The situation is expected to subside gradually, but more disturbed periods can be expected if the CME from 17 September arrives in about 24 hours.

Prootoni voo tasemed

Over the past 24 hours the greater than 10 MeV GOES proton flux was at nominal levels and is expected to remain so over the next 24 hours.

Elektronivoog geostatsionaarsel orbiidil

The greater than 2 MeV electron flux went above the 1000 pfu threshold during brief instants between 15:00 UTC on 19 September until 01:00 UTC on 20 September, as measured by GOES 16. It may increase over the threshold again in the next 24 hours. The 24 hour electron fluence increased from normal to moderate level, it is expected to stay at that levels for the next 24 hours.

Tänane hinnanguline rahvusvaheline päikeselaikude arv (ISN): 179, põhineb 12 jaamadel.

Päikese indeksid 19 Sep 2023

Catania Wolfi number	189
10cm päikesevoog	166
AK Chambon La Forêt	038
AK Wingst	040
Hinnanguline Ap	040
Hinnanguline rahvusvaheline päikeselaikude arv	164 - Põhineb 21 jaamal

Märkimisväärsete sündmuste kokkuvõte

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

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