Some of the warmest weather of the spring will blossom over Europe this week.
Warmth will wax June-like in some capitals. Many others will experience the feel of midsummer for at least one day.
Warm air will build first north and west of the Alps, an area taking in much of Germany, Switzerland, France, the Low Countries, even reaching into England.
London, for instance, will reach 20 degrees C (68 F) on Wednesday and again Thursday, thereby matching the warmest day of the year thus far.
Tops for Paris will likely be reached on Thursday, with readings reaching about 24 degrees C (75 F). It would rival the normal high for the first of July as well as the highest for 2013 date, being 25 degrees C on April 14.
After Thursday, high pressure fostering the warmth will shift eastward from the heart of the Europe, heading for the Black Sea, as a vigorous cold front drives into western Europe.
As cooling drives into western Europe, Friday will bring central and southeast Europe some of the warmest weather of 2013 so far. Computer-derived forecast shows approximate high temperatures (degrees C in 3-degree intervals)
Friday, it is central European capitals that will bask in the warmest weather. Berlin will warm to about 25 degrees C (77 F), warmer than most midsummer days and 1 degree C above the year's highest temperature thus far.
Comparable warmth, more fitting of July, will be felt in Frankfurt and Munich, Germany, and in Zurich, Switzerland, not only on Friday, but for two to three days during the latter half of the week.
In Vienna, Austria, 27 degrees C (80 F) will be reached on Friday, as it will at nearby Bratislava, Slovakia. Budapest, Hungary, should hit 26 degrees C on Friday.
Warsaw, Poland, may not have its warmest day of 2013 until Saturday, reaching about 25 degrees as the core of warmth continues its eastward shift. Kiev should see its highest temperature to date on Saturday, when 26 degrees C is expected.
Meanwhile, the warm cup trophy, if there were such a thing, will likely go to southeastern Europe, where areas from Belgrade to Bucharest to Sofia should top out 28 to 30 degrees C, or 82 to 86 F, Thursday through Saturday.
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!