Vaata neljapäev, 23 aprill 2015 arhiivi

SIDC igapäevane bülletään päikese ja geomagnetilise aktiivsuse kohta

Välja antud: 2015 Apr 23 1230 UTC

SIDC ennustus

Kehtib alates 1230 UTC, 23 Apr 2015 kuni 25 Apr 2015
Päikesepursked ehk loited

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

Geomagnetism

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

Päikese prootonid

Quiet

10 cm voolAp
23 Apr 2015152023
24 Apr 2015152016
25 Apr 2015152007

Bülletään

Solar flaring activity was mainly low but reached moderate levels with an M1.1 flare originating from Catania group 28 (NOAA 2322) from beyond the West limb peaking at 10:07 UT. Some further low level C flaring was observed from Catania groups 31 and 32 (NOAA 2326 and 2324 respectively). Most regions on disc appear mostly stable or in decay and not too remarkable. We expect C flaring over the next days. No Earth directed CME's were observed in the available coronagraph images. Solar wind conditions showed the decline of the positive polarity coronal hole high speed stream. Solar wind speed decreased from around 560 km/s at the start of the reporting period to around 440 km/s presently. Total magnetic field was around 4-5 nT with a short excursion up to 7 nT. Bz was variable remaining above -5nT. The magnetic field phi angle was stable in the outward sector. The were no clearly identifiable signs of the arrival of the April 18 CME. There remains a possibility for the CME to arrive later today or otherwise its effects have been covered up by the high speed stream effects. Geomagnetic conditions were quiet to unsettled with an isolated active period at planetary level (NOAA Kp 2-4, local K Dourbes 0-3). Solar wind is expected to further stabilize to nominal condition over the next days, but there remains a possibility for agitated conditions if the April 18 CME still arrives. Correspondingly, quiet to unsettled geomagnetic conditions are expected, with possibly active to minor storm conditions in case of CME arrival.

Tänane hinnanguline rahvusvaheline päikeselaikude arv (ISN): 087, põhineb 22 jaamadel.

Päikese indeksid 22 Apr 2015

Catania Wolfi number181
10cm päikesevoog150
AK Chambon La Forêt018
AK Wingst011
Hinnanguline Ap012
Hinnanguline rahvusvaheline päikeselaikude arv105 - Põhineb 29 jaamal

Märkimisväärsete sündmuste kokkuvõte

PäevAlgusMaksLõppLokatsioonTugevusOP10cmCatania/NOAARaadiosignaalipursete tüübid
23091810071110----M1.1--/2322

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

Kõik ajad UTC-s

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