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Thursday, April 20, 2017

abnormal warmth hangs on... (pm.20.apr.17)>

Thursday's stats:

Low temp: 70.3F (21.3C)
High temp: 86.6F (30.3C)
Rainfall: none

Well just when it seemed we might have peaked out in the temperature department, the thermometer soared even higher today.  My high temp in the upper part of town surpassed the 86ºF/30ºC mark for the first time this season and year, taking us even further above normal than we've already been for what is still essentially the middle of April.  There were some extensive patches of cloudiness around this morning, but during the afternoon hours it was mostly sunny, with not much of an impressive build-up of cumulus clouds over the mountains -- unlike what happened yesterday.

Satellite pics this evening show a lot of shower and thunderstorm activity to our northwest over northern Pakistan and parts of Kashmir, and also a few clusters of thunderstorms southeast of us in Uttarakhand into central Nepal.  But here in Himachal, we managed somehow to miss out on much convective development today.  The weather pattern is still undergoing a fundamental change, however, with increasingly unstable conditions evolving over the coming few days which will require us to be aware of the potential for some passing showers and thundershowers.

A weak but broad area of low pressure aloft will drift into northern Pakistan and northwest India by Sunday, and linger through Tuesday.  Temperatures will most likely drop down into more of an average/normal range as we progress toward the end of April, with almost daily chances of at least isolated shower/thunder activity.