Vaata laupäev, 2 september 2017 arhiivi

SIDC igapäevane bülletään päikese ja geomagnetilise aktiivsuse kohta

Välja antud: 2017 Sep 02 1235 UTC

SIDC ennustus

Päikesepursked ehk loited

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

Geomagnetism

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

Päikese prootonid

Quiet

	10 cm vool	Ap
02 Sep 2017	094	024
03 Sep 2017	093	012
04 Sep 2017	092	006

Bülletään

Over the past 24 hours solar activity remained low. There were four sunspot regions, and only Catania group 47 (NOAA region 2674) sowed some flaring activity and produced four C-class flares. The largest one was a C2.0-class flare with a peak-time at 15:37 UT September 1. Catania group 43 (NOAA region 2672) is on West solar limb and will disappear in a couple of hours. The photospheric magnetic complexity of Catania group 47 (NOAA region 2674) has increased, therefore we expect a higher probability of C-class flare with possibly the occurrence of an M-class flare. A new active region is turning over the East solar limb, which might start to also contribute the solar activity.

No Earth directed Coronal Mass Ejections (CMEs) have been detected in the available coronagraph imagery and the solar protons remains at background level.

The Earth remained in the fast solar wind with the speed that has slowly decreased from 700 to about 600 Km/s. The interplanetary magnetic field magnitude has also slowly decreased from 10 nT to about 4 nT, and the Bz component fluctuating between -5 and 2 nT.

The geomagnetic conditions were active with K-Dourbes ranging between 2 and 4, and Kp-NOAA between 2 and 5. The observed moderated storm (Kp-NOAA = 5) on September 2, between 03:00 and 09:00 UT was due to Bz component that stayed negative for a longer period. The geomagnetic conditions are expected to vary between unsettled to active conditions until the high speed stream has fade, and then to reduce to quiet to unsettled on September 3.

Tänane hinnanguline rahvusvaheline päikeselaikude arv (ISN): 063, põhineb 22 jaamadel.

Päikese indeksid 01 Sep 2017

Catania Wolfi number	061
10cm päikesevoog	093
AK Chambon La Forêt	030
AK Wingst	020
Hinnanguline Ap	020
Hinnanguline rahvusvaheline päikeselaikude arv	069 - Põhineb 31 jaamal

Märkimisväärsete sündmuste kokkuvõte

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

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