Thursday, June 11, 2015

pre-monsoon elements... (am.11.jun.15)>

Some patches of blue sky are visible off to the west and south, otherwise it's mostly cloudy at sunrise on this Thursday morning.  We had two main bands of rain move through in the past 12 hours -- the first one which hit around 6:45pm last evening included a lot of thunder and lightning and very strong and gusty winds.  There was a break in the action between roughly 9:15pm and around midnight, with then another period of rain showers with less thunder and less wind during the wee hours of the morning -- ending around 5:00am.  I have 0.96" (2.4cm) in the rain gauge, but exactly half of that occurred between 6:45 and 7:45pm last evening.  As far as temps are concerned, they've been bouncing around frantically -- between 57.7F (14.3C) and 71.4F (21.9C) just since 10:00pm.  It's currently 63.3F (17.4C).

Those impressive clusters of showers and thunderstorms developed late yesterday afternoon in northern Pakistan, and were carried east-southeastward across Himachal Pradesh.  This west-northwesterly flow in the upper-atmosphere won't change much during the coming two or three days, but the moisture content of our air mass is increasing.  Strong June sunshine combined with a more moisture-laden air mass and any random disturbances in that upper-level flow will probably team up to produce more shower/thunder action later this afternoon or early evening somewhere across the western Himalayan region.  This is a fairly typical pre-monsoon scenario for us, as we continue to juggle sunshine, occasional clouds, summer warmth, and that threat of a period of thunderstorms.

Temperatures will continue to be volatile... warming into the mid-80sF (around 30C) with a few hours of sunshine, but then plunging into the upper 50sF (near 15C) during a period of rain and thunder.

Check out THE 7-DAY OUTLOOK for forecast specs.