Vaata laupäev, 20 mai 2017 arhiivi

SIDC igapäevane bülletään päikese ja geomagnetilise aktiivsuse kohta

Välja antud: 2017 May 20 1230 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
20 May 2017	072	021
21 May 2017	072	024
22 May 2017	072	021

Bülletään

In the past 24 hours, no C flares were observed. Very low solar activity (no C flares) is expected in the next 24 hours. Solar wind speed measured by DSCOVR varied between about 430 and 490 km/s until around 18:30 UT on May 19, when it started rising to a plateau around 600 km/s. At 8:52 UT on May 20, the solar wind speed jumped to about 710 km/s. The magnitude of the Interplanetary Magnetic Field (IMF) varied between about 5 and 15 nT until 8:52 UT on May 20, when it fell from 13 to 6 nT. These are clear signs of the arrival of the predicted high speed stream from a negative equatorial coronal hole. Bz was regularly between -5 and -10 nT between 5h and 9h UT. Unsettled geomagnetic conditions (K Dourbes equal to 3; NOAA Kp between 2 and 4) were registered in the past 24 hours. Active (K Dourbes = 4) to minor storm conditions (K Dourbes = 5) are possible on May 20, 21 and 22, due to the arrival the predicted high speed stream.

Tänane hinnanguline rahvusvaheline päikeselaikude arv (ISN): 032, põhineb 20 jaamadel.

Päikese indeksid 19 May 2017

Catania Wolfi number	028
10cm päikesevoog	072
AK Chambon La Forêt	024
AK Wingst	016
Hinnanguline Ap	016
Hinnanguline rahvusvaheline päikeselaikude arv	023 - Põhineb 23 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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