Vaata teisipäev, 18 oktoober 2016 arhiivi

SIDC igapäevane bülletään päikese ja geomagnetilise aktiivsuse kohta

Välja antud: 2016 Oct 18 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
18 Oct 2016	078	013
19 Oct 2016	079	012
20 Oct 2016	080	017

Bülletään

Over the past 24 hours solar activity has been low. there were no significant flares and all Active Regions (AR) have shown low levels of activity. Solar protons have remained at background levels over the past 24 hours. Solar activity is expected to remain low over the next 24 hours with a low probability of C-class flares. There is evidence in EUV imagery (EUV wave and dimming) of a small eruption at 21:10 UT on 2016-Oct-17, from AR 2602 (Mcintosh class:Cao; Mag. type:Beta). As the source is near disk centre it may produce a halo CME in coronagraph imagery. However, Coronagraph imagery for this period is currently unavailable. The size of the wave and the dimming indicate a small eruption, but possibly Earth directed, if significant a PRESTO will be issued. The solar wind speed has been slowly decreasing from around between 750 and 600 km/s over the past 24 hours. The total magnetic field strength has remained around 5 nT. The Bz component fluctuated around 0 nT, ranging between -5 and +5 nT. Geomagnetic conditions ranged between Kp index 2-4 (NOAA) and local K index 2-4 (Dourbes) over the past 24 hours. The enhanced solar wind speeds are associated with a High Speed Stream (HSS) from a large negative polarity Southern polar coronal hole located in the western hemisphere. As the hole rotates towards the limb the speed is expected to abate. Geomagnetic conditions are expected to be quiet to unsettled.

Tänane hinnanguline rahvusvaheline päikeselaikude arv (ISN): 029, põhineb 13 jaamadel.

Päikese indeksid 17 Oct 2016

Catania Wolfi number	024
10cm päikesevoog	076
AK Chambon La Forêt	035
AK Wingst	025
Hinnanguline Ap	025
Hinnanguline rahvusvaheline päikeselaikude arv	029 - Põhineb 22 jaamal

Märkimisväärsete sündmuste kokkuvõte

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

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