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Щоденний бюлетень про сонячну та геомагнітну активність від SIDC

Випущено: 2020 Dec 18 1231 UTC

Прогноз SIDC

Сонячні спалахи

Quiet conditions (<50% probability of C-class flares)

Геомагнетизм

Quiet (A<20 and K<4)

Сонячні протони

Quiet

	10 см потік	Ap
18 Dec 2020	082	002
19 Dec 2020	082	003
20 Dec 2020	082	003

Бюлетень

The Sun has not produced any B flare or higher in the past 24 hours. The chance for a C flare in the next 24 hours is estimated at only 5%.

No Earth-directed Coronal Mass Ejections (CMEs) were observed in available coronagraphic imagery.

The greater than 10 MeV proton flux was at nominal levels in the past 24 hours, and is expected to stay at nominal levels in the next 24 hours. The greater than 2 MeV electron flux was at nominal levels in the past 24 hours, and is expected to stay at nominal levels in the next 24 hours. The greater than 2 MeV electron fluence was at nominal levels during the past 24 hours, and is expected to remain so in the next 24 hours.

Solar wind speed near Earth as registered by DSCOVR varied between about 265 and 300 km/s in the past 24 hours. The orientation of the Interplanetary Magnetic Field (IMF) was predominantly positive (away from the Sun) and its magnitude varied between about 1 and 8 nT. Bz was never below -5 nT. Nominal solar wind conditions are expected in the next days.

Quiet geomagnetic conditions (K Dourbes between 0 and 1; NOAA Kp between 0 and 1) were registered in the past 24 hours. Quiet to unsettled geomagnetic levels (K Dourbes < 4) are expected on December 18, 19 and 20.

Розрахунок міжнародної кількості сонячних плям станом на сьогодні (ISN): 004, за даними 12 станцій.

Сонячні індекси за 17 Dec 2020

Число Вольфа, Катанія	012
Сонячний потік 10 см	082
AK Chambon La Forêt	003
AK Wingst	001
Розрахунковий індекс Ap	001
Розрахункова міжнародна кількість сонячних плям	011 - За даними 19 станцій

Зведення помітних подій

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

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