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Saturday, May 27, 2017

rare thunderless day... (pm.27.may.17)>

Saturday's stats:

Low temp: 68.5F (20.3C)
High temp: 86.0F (30.0C)
Rainfall: none

WHAT??  No shower(s) today?  And no thunder?  It's quite an accomplishment, considering the fact that we have had at least some mountain thunder on every single day since the 9th of May, except for the 19th -- that's 17 of the last 19 days (including today).  There wasn't rainfall on all of those days, but rumbling thunder up-mountain has had us on our toes for a long time.  The first cloud development along the Dhauladhars got started very late, around the noon hour, and never really progressed -- and that allowed us to enjoy a mostly sunny Saturday.  My high temp was the warmest I've recorded since the 15th of the month.

Here across Himalayan north India we are stuck mid-way between a swirling area of low pressure aloft which is centered over northern Tibet, and a strong area of high pressure aloft which is parked over eastern Saudi Arabia.  The upper-level flow between these two dominant weather features is keeping north-northwesterly winds in the higher levels of the atmosphere in play across our area.  Random pockets of cooler air embedded in weak circulations in that upper-level flow overrunning a very warm summertime air mass in the lower levels is a recipe for fluctuating instability along the Himalayan ranges.  This situation is not going to budge much before the latter part of next week -- so though we got a much-welcomed break in the action today, I'm afraid we're going to have to remain braced for scattered shower and thunderstorms anyway.  Very honestly and frankly, thunderstorm development right here along the Dhauladhars in this kind of pattern is best predicted with the flip of a coin.

Temperatures have been slightly above normal the last couple of days, but we will likely cool off a few degrees again during the first part of next week, before the next surge of heat pushes in by the following weekend.