QRZ.RU EXPRESS от 15 апреля 2022

Опубликовано: 2022 Apr 14 1237 UTC
SIDC URSIGRAM 20414
Состояние солнечной активности на 14 Apr 2022, 1235UT
Прогноз сделан для периода с 1230UT, 14 Apr 2022 до 16 Apr 2022)
Солнечная активность: очень низкая. Вероятность вспышек C-класса менее 50%
Геомагнитное поле: Возмущенное (A>=20, K=4)
Солнечные протоны: Спокойное состояние
Прогноз на 14 Apr 2022: плотность потока солнечного излучения: 099, A-индекс: 019
Прогноз на 15 Apr 2022: плотность потока солнечного излучения: 099, A-индекс: 010
Прогноз на 16 Apr 2022: плотность потока солнечного излучения: 099, A-индекс: 006
Комментарий (на английском языке): The solar flaring activity is very low, with only occasional low B-class flares and no C-class flares reported. We expect that such a flaring conditions will persist in the coming hours. The isolated C-class flares are still possible in particularly from the sunspot group (not yet numbered) that is rotating to the visible side of the Sun from behind of the East solar limb. The full halo CME with projected plane-of-the-sky speed of about 1000 km/s (as reported by the CACTUS software) was observed on April 13. The CME was first time observed in the SOHO/LASCO C2 filed of view at 13:25 UT and in the STEREO A/COR2 field of view at 13:23 UT. There are no clear on disc signatures of the CME observed on the visible side of the Sun, as seen from Earth or from the STEREO A. Considering the position of the STEREO A and the orientation of the CME we can conclude that this CME was a back side event and will therefore not arrive to Earth. No other Earth-directed CMEs were detected in the available coronagraph observations over the past 24 hours. The greater than 10 MeV proton flux was at background levels, and we expect that it will remain so in the coming hours. The greater than 2 MeV electron flux was, during last 24 hours, fluctuating around the 1000 pfu threshold. We do not expect significant increase above the 1000 pfu threshold in the coming hours. The 24h electron fluence is at normal to moderate level and we expect it will stay so in the coming 24 hours. The in situ observation show arrival of the magnetic structure straight after the passage of the CME that departed from the Sun on April 09. The presently available observations indicate that is the early arrival of the halo CME first observed in the SOHO/LASCO C2 filed of view at about 05:48 UT on April 11. The CME had source region on the center of the solar disc and it was clearly Earth directed. Its early arrival in comparison to the forecasted arrival time is due to underestimated CME velocity (often case for the halo CMEs). Elongated, positive polarity coronal hole (possibly connected to the equatorial positive polarity coronal hole that reached central meridian late on April 12) reached central meridian at about 12 UT today. The solar wind associated with this coronal hole is expected at Earth in the evening of April 17 or early morning of April 18. Presently the solar wind speed is about 460 km/s and the interplanetary magnetic field magnitude is about 10 nT. The arrival of the ICME induced disturbed geomagnetic conditions. Local station at Dourbes reports short interval of K=5 and NOAA reported interval of Kp=5. We expect active to unsettled geomagnetic conditions in the coming hours.Сегодняшнее значение числа солнечных пятен (International Sunspot Number): 037,
получено на основе анализа результатов 25 станций наблюдения.
Солнечные индексы за 13 Apr 2022
Число Вольфа по данным обсерватории Катания (IT9): 050
Плотность потока излучения: 099
A-индекс по данным обсерватории Chambon-la-Foret (F): 014
A-индекс по данным обсерватории Wingst (DL): 008
Планетарный А-индекс Ap: 008
Вчерашнее значение числа солнечных пятен (International Sunspot Number): 032,
получено на основе анализа результатов 28 станций наблюдения.
Прошедшие события на Солнце:
DAY BEGIN MAX END LOC XRAY OP 10CM Catania/NOAA RADIO_BURST_TYPES
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