British intelligence assesses weather's impact on military operations in Ukraine

The UK Ministry of Defence writes about this.

It is noted that Ukraine is currently experiencing a sharp cold snap, and over the next week the temperature is expected to rise above zero. However, the soil remains frozen.

As the ground freezes, cross-country movement conditions will almost certainly improve during January and February before thawing in March. The thaw will lead to a deterioration in conditions for cross-country movement.

Ukraine is also currently experiencing an increase in snow cover, and its depth will be a limiting factor for maneuverability.

"The worsening conditions will be compounded by shortened daylight hours, making operating conditions difficult for both sides, which will have to rely on cold weather and night vision equipment to operate," the intelligence added.

• On Thursday, January 11, Ukraine is expected to warm up, though western regions should prepare for night frosts. On January 12, cold northern air will return to the country.