A cold outbreak hitching with a pair of Mediterranean storms will spread a streak of snow over central and eastern Europe late this week into early next week.
These same storms will also bring the threat of excessive rainfall and flooding from Italy to the western Balkan Peninsula.
Between Friday and Sunday, travel over hilltop and mountain roadways of central Europe may be disrupted temporarily from the Alps east to the Carpathians.
Farther east, heavy, wet snowfall, potentially 6 to 12 inches, could prove disruptive in a swath from northwestern Ukraine and southern Belarus into central Russia, including Moscow.
A few of the central Europe cities likely to get at least a little snow will be Munich, Salzburg, Vienna, Ljubljana and Budapest.
In the east, the snow streak will likely reach from Lviv, Ukraine, to Moscow and Nizhniy Novgorod.
The late-week storminess will follow earlier outbreaks of snow, coinciding with the onrush of cold air, from Scandinavia and Finland to northwestern Russia and the Baltic states.
A foot of new snow blanketed Nikel, Russia, as of Thursday.
The plum rains are known as "meiyu" in China, the "baiyu" or "tsuyu" in Japan, and the "jangma" in the Koreas. The heart of the plum rain season stretches from early June to mid-July, with a tendency to shift south to north across the affected area.
In the wake of the mid-June cloudbursts, most of Pakistan to northwestern India last week saw a return to dry, hot weather typical of the weeks leading up to the Monsoon onset. It was as if the Monsoon withdrew to its "normal" position for the latter half of June.
The 38.5 degree C (101 degrees F) reading Tuesday in Ajaccio, Corsica, may have been tops in Europe.
Monsoon Onset was June 13th, 2013, in Delhi, almost two weeks earlier than average. The June 15th onset at Karachi and Islamabad was more like three week ahead of schedule.
In Pakistan, hit-or-miss downpours missed the Sindh capital, Karachi. One did hit Pad Idan, where it left 60 mm of rain Wednesday. This was more than 20 times greater than the normal June rainfall.
It is still possible that this scenario is over wrought as to the intensity and spread of rain in Pakistan and northwestern India. However, it is the hunch of the present forecaster that some very unusual weather is going to unfold in the Subcontinent during the next week!