Перегляд архіву субота, 21 лютого 2015

Щоденний бюлетень про сонячну та геомагнітну активність від SIDC

Випущено: 2015 Feb 21 1225 UTC

Прогноз SIDC

Сонячні спалахи

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

Геомагнетизм

Active conditions expected (A>=20 or K=4)

Сонячні протони

Quiet

	10 см потік	Ap
21 Feb 2015	120	007
22 Feb 2015	125	017
23 Feb 2015	125	009

Бюлетень

Solar activity was low with four C-class flares, mainly originating from NOAA active region (AR) 2286, which has currently rounded the west limb. The strongest flare was a C2.3 flare peaking at 15:22 UT on February 20. No associated solar event was observed. A filament eruption was observed starting on February 20 at 3:24 UT near S15E15, with a CME observed in LASCO/C2 (first clear measurement near 7:36 UT ) and in LASCO/C3 (first measurement near 12:06 UT). The very slow CME (nearly 200 km/s) was directed to the south with a less than 100 degrees angular width. No Earth-directed component is expected. Flaring at C-class flares is expected. Nominal solar wind conditions were observed, with the magnitude of the interplanetary magnetic field maximally at 7 nT. The solar wind speed is currently around 350 km/s. Geomagnetic conditions were quiet to unsettled (K=1 to 3) at the local level (Dourbes) and global level (estimated NOAA Kp), which is expected to continue for the next few hours. The arrival of the anticipated coronal hole high speed stream could result in active geomagnetic conditions on February 22 (K=4, with a small chance for K=5).

Розрахунок міжнародної кількості сонячних плям станом на сьогодні (ISN): 043, за даними 10 станцій.

Сонячні індекси за 20 Feb 2015

Число Вольфа, Катанія	054
Сонячний потік 10 см	120
AK Chambon La Forêt	011
AK Wingst	006
Розрахунковий індекс Ap	005
Розрахункова міжнародна кількість сонячних плям	046 - За даними 12 станцій

Зведення помітних подій

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

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