Vaata kolmapäev, 19 mai 2021 arhiivi

SIDC igapäevane bülletään päikese ja geomagnetilise aktiivsuse kohta

Välja antud: 2021 May 19 1231 UTC

SIDC ennustus

Päikesepursked ehk loited

Quiet conditions (<50% probability of C-class flares)

Geomagnetism

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

Päikese prootonid

Quiet

	10 cm vool	Ap
19 May 2021	077	016
20 May 2021	079	007
21 May 2021	079	007

Bülletään

Two active regions (ARs) visible on the disk, NOAA AR 2822 (alpha magnetic field configuration) and AR 2824 (beta magnetic field configuration). Only B-class flares in past 24 hours. C-class flares are possible.

No Earth-directed Coronal Mass Ejections (CMEs) have been detected in the available coronagraphic imagery in the last 24 hours.

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 in the past 24 hours and is expected to remain so. The 24-hour electron fluence was at normal levels in the past 24 hours and is expected to remain so.

In the last 24 hours, the solar wind speed varied between 350 and 400 km/s. The interplanetary magnetic field reached 9 nT with Bz mostly positive. The interplanetary magnetic field polarity was negative (towards the Sun). The high speed solar wind from the coronal hole that crossed the central meridian on 15 May is expected to arrive to the Earth today.

Geomagnetic conditions have been mostly quiet (KDourbes 0-3, Kp 1-2). Active conditions can be expected when the high speed solar wind stream arrives to the Earth today.

Tänane hinnanguline rahvusvaheline päikeselaikude arv (ISN): 026, põhineb 23 jaamadel.

Päikese indeksid 18 May 2021

Catania Wolfi number	///
10cm päikesevoog	076
AK Chambon La Forêt	010
AK Wingst	012
Hinnanguline Ap	012
Hinnanguline rahvusvaheline päikeselaikude arv	028 - Põhineb 32 jaamal

Märkimisväärsete sündmuste kokkuvõte

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

Kõik ajad UTC-s

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