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Щоденний бюлетень про сонячну та геомагнітну активність від SIDC

Випущено: 2021 Apr 03 1312 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
03 Apr 2021	074	005
04 Apr 2021	074	007
05 Apr 2021	074	014

Бюлетень

The solar activity has been quiet over the past 24 hours. The visible solar disc is spotless and the X-ray flux is below B-level. The solar activity is expected to remain at low levels over the next 24 hours.

No Earth-directed coronal mass ejections (CMEs) was observed in the available coronagraph imagery.

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 1000 pfu threshold on April 02, between 17:15 UTC and 17:40 UTC. It is expected to remain mainly below the 000 pfu threshold during the next 24 hours. The 24h electron fluence was at nominal levels in the last 24 hours and is expected to stay at normal levels for the next 24 hours.

The solar wind parameters (ACE and DSCOVR) were slightly enhanced due to the influence of the speed streams associated with small patchy equatorial coronal holes (in the south hemisphere, with negative polarity): The solar wind speed ranged between 349 km/s and 409 km/s . The interplanetary magnetic field magnitude peaked at 9.0 nT, and Bz components varied between -7.5 nT and 6.6 nT. The high-speed streams associated with the equatorial coronal hole (positive magnetic polarity and facing Earth on March 31) is expected to slightly enhanced the solar wind conditions near Earth later today and tomorrow on April 3 and 4. A large equatorial coronal hole (with a positive magnetic polarity) is currently facing Earth. The high-speed stream associated with this coronal hole is expected to reach Earth in about 3 days.

Geomagnetic conditions were quiet to unsettle (Kp and K-Dourbes: 1-3) due to the slight enhancement of the solar wind conditions. Quiet to unsettled conditions is expected to persist followed by possible periods of active conditions on April 2, due to the expected influence of the high-speed streams associated with the equatorial coronal hole (facing Earth on March 31).

Розрахунок міжнародної кількості сонячних плям станом на сьогодні (ISN): 000, за даними 18 станцій.

Сонячні індекси за 02 Apr 2021

Число Вольфа, Катанія	000
Сонячний потік 10 см	072
AK Chambon La Forêt	011
AK Wingst	007
Розрахунковий індекс Ap	006
Розрахункова міжнародна кількість сонячних плям	000 - За даними 32 станцій

Зведення помітних подій

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

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