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Щоденний бюлетень про сонячну та геомагнітну активність від SIDC

Випущено: 2025 Aug 26 1231 UTC

Прогноз SIDC

Сонячні спалахи

M-class flares expected (probability >=50%)

Геомагнетизм

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

Сонячні протони

Warning condition (activity levels expected to increase, but no numeric forecast given)

	10 см потік	Ap
26 Aug 2025	175	020
27 Aug 2025	180	016
28 Aug 2025	182	007

Сонячно-активні області та спалахи

Solar flaring activity was moderate over the past 24 hours, with 4 M-class flares identified. The largest flare was a M4.5 flare (SIDC Flare 5237) peaking on August 26 at 05:25 UTC, which was produced by SIDC Sunspot Group 614 (NOAA Active Region 4197). That region and SIDC Sunspot Group 617 (NOAA Active Region 4199), both located close to the east limb, are driving most of the activity. Solar flaring activity is expected to be moderate over the next 24 hours, with M-class flares likely and a small chance for X-class flares.

Корональні викиди маси

No Earth-directed Coronal Mass Ejections (CMEs) have been observed in the last 24 hours.

Корональні діри

SIDC Coronal Hole 126 (northern mid-latitude coronal hole with negative polarity) is located in the western hemisphere and its related high speed solar wind stream may arrive to the Earth in the next 24 hours.

Сонячний вітер

The Earth is inside slow solar wind with speeds around 400 km/s and interplanetary magnetic fields of about 5 nT (directed towards the Sun, negative polarity). A high speed solar wind stream is expected to arrive in the next 24 hours, with probably only mild effects.

Геомагнетизм

Geomagnetic conditions have been quiet to unsettled (Kp and B_Bel between 0 and 3). Similar conditions are expected until the arrival of the high speed solar wind stream in the next 24 hours (mostly active conditions expected then).

Рівні потоку протонів

The greater than 10 MeV proton flux has continued to increase slowly and has almost reached the 10 pfu threshold, without going above it (currently at 9 pfu). A warning condition forecast is issued for the next 48 hours.

Потоки електронів на геостаціонарній орбіті

The greater than 2 MeV electron flux as measured by GOES 18 and 19 remained below the 1000 pfu alert threshold (except for a minimal crossing of the threshold between 13:00 and 26:00 UTC on 25 August, in GOES 19), similar conditions expected for the next 24 hours. The 24 h electron fluence was at normal levels and is expected to remain so.

Розрахунок міжнародної кількості сонячних плям станом на сьогодні (ISN): 184, за даними 23 станцій.

Сонячні індекси за 25 Aug 2025

Число Вольфа, Катанія	125
Сонячний потік 10 см	175
AK Chambon La Forêt	016
AK Wingst	011
Розрахунковий індекс Ap	009
Розрахункова міжнародна кількість сонячних плям	139 - За даними 32 станцій

Зведення помітних подій

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

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