Vaata teisipäev, 19 mai 2015 arhiivi

SIDC igapäevane bülletään päikese ja geomagnetilise aktiivsuse kohta

Välja antud: 2015 May 19 1230 UTC

SIDC ennustus

Kehtib alates 1230 UTC, 19 May 2015 kuni 21 May 2015
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 voolAp
19 May 2015109023
20 May 2015103017
21 May 2015100011

Bülletään

Until the C2.3 flare peaking just before the end of the period at 11:59UT, solar activity was quiet with all additional flaring remaining below C level. The C2.3 flare originated from the new region that rotated on disk in the northern hemisphere and which is yet unnumbered. In addition to that new region there are 6 numbered regions on disk, all with a fairly simple configuration and hence quiet conditions with possible occasional C flares are expected. A number of small eruptions were recorded from near region 2341 (around 19:55 UT), near region 2349 (around 05:55UT) and near 25N10W (around 8:40UT). Currently available coronagraphic images confirm that the first one of these events has only a narrow associated CME. The other two events are also not expected to result in any significant Earth directed CME. Solar wind was dominated by the expected onset of a high speed stream from a positive polarity equatorial coronal hole. Solar wind speed increased from around 380 km/s to 450 km/s around 18:30UT and continued to increase with current values fluctuating in the 480-550 km/s range. Total magnetic field increased from around 9 nT to over 15 nT around 19:30 UT with later a peak of 19 nT around 01:00UT, and a steady decline to below 10 nT at present. Bz was variable but with initially some pronounced negative periods down to -15 nT but later predominantly positive. In response, moderate geomagnetic storm conditions have been recorded at planetary level (NOAA Kp=6 for the 00-03UT time frame), while local geomagnetic conditions remained restricted to active levels (K Dourbes 4). Some further increase in solar wind speed is expected before the high speed stream influence will decline over the next days. Further periods of active geomagnetic conditions are to be expected subject to the orientation of the magnetic field.

Tänane hinnanguline rahvusvaheline päikeselaikude arv (ISN): 057, põhineb 13 jaamadel.

Päikese indeksid 18 May 2015

Catania Wolfi number///
10cm päikesevoog115
AK Chambon La Forêt038
AK Wingst018
Hinnanguline Ap019
Hinnanguline rahvusvaheline päikeselaikude arv069 - Põhineb 25 jaamal

Märkimisväärsete sündmuste kokkuvõte

PäevAlgusMaksLõppLokatsioonTugevusOP10cmCatania/NOAARaadiosignaalipursete tüübid
Puuduvad

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

Kõik ajad UTC-s

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