QRZ.RU EXPRESS от 18 марта 2021

Опубликовано: 2021 Mar 17 1230 UTC

SIDC URSIGRAM 10317
Состояние солнечной активности на 17 Mar 2021, 1230UT
Прогноз сделан для периода с 1230UT, 17 Mar 2021 до 19 Mar 2021)
Солнечная активность: очень низкая. Вероятность вспышек C-класса менее 50%
Геомагнитное поле: Возмущенное (A>=20, K=4)
Протонные вспышки: Спокойное состояние
Прогноз на 17 Mar 2021: плотность потока солнечного излучения: 079, A-индекс: 003
Прогноз на 18 Mar 2021: плотность потока солнечного излучения: 077, A-индекс: 004
Прогноз на 19 Mar 2021: плотность потока солнечного излучения: 077, A-индекс: 023

Комментарий (на английском языке): Solar activity was very low in the past 24 hours, no C-class flares were recorded. NOAA Active Region (AR) 2808 has decayed into a plage region. The new active region, is now numbered as Catania group 81 (NOAA AR 2810) and has been quiet. Overall, solar activity is expected to remain at very low levels, with a small chance of a C-class flare. A back-sided partial halo Coronal Mass Ejections (CME) was first seen at 10:24 UT on the 16th March in LASCO-C2 images. It is not expected to arrive at Earth. No Earth-directed CMEs have been observed in the available coronagraph data. The greater than 10 MeV proton flux was at nominal levels over the past 24 hours and is expected to remain so for the next 24 hours. The greater than 2 MeV electron flux exceeded the 1000 pfu threshold during the last 24 hours and is expected to remain above the threshold for the next 24 hours. The 24h electron fluence was at moderate levels and it is expected to remain at this level in the next 24 hours. Solar wind speed continued to decrease in the last 24 hours with values between 400 km/s and 340 km/s. The total interplanetary magnetic field was between 0 and 6 nT during the last 24 hours. The magnetic field phi angle switched from negative to mostly positive after approximately 18:00 UT March 16th. Solar wind conditions are expected to generally reflect a slow solar wind regime during March 17th and 18th. On March 19th the solar wind high speed stream associated with the corona hole, which crossed that solar central meridian on 17th March, is expected to arrive. Geomagnetic conditions were at quiet levels (NOAA Kp 0-2 and local K Dourbes 1-2). Geomagnetic conditions are expected to be at quiet levels over the next 24 hours. However, the geomagnetic conditions are expected to reach active levels on the 19th March, due to the expected high speed stream.Сегодняшнее значение числа солнечных пятен (International Sunspot Number): 011,
получено на основе анализа результатов 11 станций наблюдения.
Солнечные индексы за 16 Mar 2021
Число Вольфа по данным обсерватории Катания (IT9): ///
Плотность потока излучения: 079
A-индекс по данным обсерватории Chambon-la-Foret (F): 007
A-индекс по данным обсерватории Wingst (DL): 003
Планетарный А-индекс Ap: 002
Вчерашнее значение числа солнечных пятен (International Sunspot Number): 020,
получено на основе анализа результатов 20 станций наблюдения.
Прошедшие события на Солнце:
DAY BEGIN MAX END LOC XRAY OP 10CM Catania/NOAA RADIO_BURST_TYPES

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