QRZ.RU EXPRESS от 29 апреля 2022

Опубликовано: 2022 Apr 28 1240 UTC
SIDC URSIGRAM 20428
Состояние солнечной активности на 28 Apr 2022, 1237UT
Прогноз сделан для периода с 1230UT, 28 Apr 2022 до 30 Apr 2022)
SOLAR FLARES : C-class flares expected, (probability >=50%)
Геомагнитное поле: Спокойное состояние (A<20 and K<4)
Солнечные протоны: Спокойное состояние
Прогноз на 28 Apr 2022: плотность потока солнечного излучения: 140, A-индекс: 012
Прогноз на 29 Apr 2022: плотность потока солнечного излучения: 140, A-индекс: 010
Прогноз на 30 Apr 2022: плотность потока солнечного излучения: 140, A-индекс: 019
Комментарий (на английском языке): Solar flaring activity was mostly at low levels over the last 24 hours with few C-class flares observed from different active regions on the solar disc visible from Earth. The larger flare was a C7.6-flare coming from the unipolar region Catania sunspot group 84 (NOAA active region 2995). For the next 24 hours, C-class flares are expected with still also a small chance for an M-class flare. No Earth directed Coronal Mass Ejection (CME) has been detected in the available coronagraph imagery over the last 24 hours. The greater than 2 MeV electron flux remained below the 1000 pfu alert threshold and is expected to remain below the threshold in the next 24 hours. The greater than 2 MeV electron fluence was at nominal levels in the past 24 hours and is expected remained at nominal levels in the next 24 hours. The solar wind parameters in Earth environment (as recorded by DSCOVR) showed an increase of the solar wind speed up to about 520 km/s and of the interplanetary magnetic field magnitude up to 12 nT. The Bz component of the interplanetary magnetic field reached up to -11 nT. This is the result of the passage of a solar wind transient structures. However the causes of this disturbance is not fully clear. The high-speed streams coming from the equatorial coronal hole (negative polarity) that reached the central meridian on April 26 is expected to reach Earth and enhance the solar wind parameters starting later on April 29 or earlier 20. The geomagnetic conditions were active due to the passage of the solar wind transient event (NOAA Kp and local K-Belgium 3-5). The geomagnetic conditions may be still active in the following hours. Then geomagnetic conditions are expected to be mostly quiet with possible isolated periods of unsettled condition for the day before the arrival of the fast solar wind originating from the equatorial coronal hole that reached the central meridian on April 26.Сегодняшнее значение числа солнечных пятен (International Sunspot Number): 131,
получено на основе анализа результатов 16 станций наблюдения.
Солнечные индексы за 27 Apr 2022
Число Вольфа по данным обсерватории Катания (IT9): 124
Плотность потока излучения: 142
A-индекс по данным обсерватории Chambon-la-Foret (F): ///
A-индекс по данным обсерватории Wingst (DL): 021
Планетарный А-индекс Ap: 018
Вчерашнее значение числа солнечных пятен (International Sunspot Number): 128,
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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