Vaata neljapäev, 27 detsember 2018 arhiivi

SIDC igapäevane bülletään päikese ja geomagnetilise aktiivsuse kohta

Välja antud: 2018 Dec 27 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
27 Dec 2018	069	002
28 Dec 2018	069	010
29 Dec 2018	069	018

Bülletään

Solar activity was at very low levels. The Sun was spotless for the 12th consecutive day (SILSO). No coronal mass ejections (CMEs) were observed over the last 24 hours. The greater than 10 MeV proton flux was at nominal values. A narrow extension of the positive polarity northern polar coronal hole (CH) has transited the central meridian.

Solar activity is expected to remain at very low levels.

Solar wind speed showed a generally declining trend, from about 355 km/s at the beginning of the period to 315 km/s at the end (DSCOVR). Bz ranged from -4 to +4 nT. The interplanetary magnetic field remained chiefly directed towards the Sun (negative sector). Quiet geomagnetic conditions were observed.

Quiet geomagnetic conditions are expected to continue, until the arrival of the wind stream associated with the extension of the northern polar CH, currently expected for late on 28 or on 29 December. This may result in active geomagnetic conditions, a minor storming interval is not excluded.

Tänane hinnanguline rahvusvaheline päikeselaikude arv (ISN): 000, põhineb 16 jaamadel.

Päikese indeksid 26 Dec 2018

Catania Wolfi number	///
10cm päikesevoog	069
AK Chambon La Forêt	008
AK Wingst	002
Hinnanguline Ap	002
Hinnanguline rahvusvaheline päikeselaikude arv	000 - Põhineb 22 jaamal

Märkimisväärsete sündmuste kokkuvõte

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

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