On the night of August 12, the Sun emitted two powerful flares of the penultimate power class. This was reported by the Institute of Applied Geophysics (FSBI "IPG").

Источник изображения: Grok
At 03.59 Moscow time, an M1.5 flare lasting 34 minutes was recorded in the X-ray range in spot group 4168 (N03W89), and at 04.23 Moscow time, an M1.8 flare lasting nine minutes was recorded in the X-ray range in spot group 4168 (N05W89).
Press service of FSBI "IPG"

These events may foreshadow further activity. During the day (August 12), flares of the highest class X are possible, which may affect the Earth's magnetic field and cause geomagnetic storms. 

Earlier www1.ru reported that a fireworks display of 17 flares occurred on the Sun in less than two days.

Read more on the topic:

10 Powerful Class M Flares Occur on the Sun: Weather-Sensitive People Should Prepare

The Sun "Fired" Three Powerful Class M Flares in Two Hours

Powerful Flare Occurred on the Sun: Magnetic Storm May Strike Earth Again