Late this week, the large and deep upper low across eastern and southeastern Europe will finally weaken, diminishing the intense cold outbreak over the Black Sea region.
With a persistent deep trough over the North Atlantic and northern Europe, ridging from the west-southwest Europe will gradually expand into central Europe and further east. This will allow higher geopotential falls to develop also over the Balkan peninsula, as well as eastern Europe and the Black Sea region. The result will be much stable weather and especially higher temperatures.
As we could see from the charts below, warmth will be quite significant and temperatures are forecast to climb a few degrees above normal again. Overall, the southwesterly flow will allow warmth to spread across southern, and eastern Europe, including Scandinavia and the Baltic region. Temperatures should again return into the mid-20s for many countries over the weekend and extend into the final week of September 2021