Перегляд архіву четвер, 19 листопада 2015

Щоденний бюлетень про сонячну та геомагнітну активність від SIDC

Випущено: 2015 Nov 19 1230 UTC

Прогноз SIDC

Сонячні спалахи

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

Геомагнетизм

Quiet (A<20 and K<4)

Сонячні протони

Quiet

	10 см потік	Ap
19 Nov 2015	109	007
20 Nov 2015	111	007
21 Nov 2015	113	007

Бюлетень

Solar activity was low with only a single C flare peaking at 20:09UT at C1.1 level from a region at the NE limb. Catania regions 77 and 78 (now marked separately NOAA 2454 and 2456 respectively) remained relatively simple and inactive. The new region that is turning over the NE limb, and responsible for yesterdays C flare, will come into view over the next days. A further occasional C flare can be expected. No Earth directed CMEs have been recorded in coronagraph data. Solar wind speed increased over the period under the combined influence of a negative polarity coronal hole and later the arrival of the shock related to the November 16 CME. Solar wind speed initially rose from around 370 km/s to 420 km/s with Bz stable in the 6-8nT range. At 19:23 UT a shock was observed in the solar wind with magnetic field increasing suddenly from 6 to 12.7nT and with associated minor jumps in solar wind speed (420 to 450 km/s) and density. The Bz field became pronounced negative for a while after the shock. Since then Solar wind speed was in the 420-500 km/s range with a generally decaying trend and meanwhile total magnetic field has fully recovered to values below 4 nT. Active to minor geomagnetic storm conditions (local K Dourbes 4 and NOAA Kp reaching 5 for one perid) were recorded in response to the negative Bz around midnight. Nominal solar wind conditions are expected to restore with associated quiet to unsettled geomagnetic conditions.

Розрахунок міжнародної кількості сонячних плям станом на сьогодні (ISN): 041, за даними 07 станцій.

Сонячні індекси за 18 Nov 2015

Число Вольфа, Катанія	039
Сонячний потік 10 см	108
AK Chambon La Forêt	030
AK Wingst	019
Розрахунковий індекс Ap	020
Розрахункова міжнародна кількість сонячних плям	029 - За даними 26 станцій

Зведення помітних подій

Надано Центром Аналізу Даних Сонячного Впливу (SIDC)© - SIDC - Оброблено SpaceWeatherLive

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