Monday, September 16, 2013

humidity plummets... (am.16.sep.13)>

*Update @ 8:01am... Forgot to mention the fair coating of snow on the Dhauladhar peaks from last evening's storm.  I'm sure it was a harrowing night on the high passes across Himachal.  Just another sign of the changing seasons.

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We have mostly clear skies at sunrise, a temperature of 60F (15.5C), and humidity at 54%.  A humidity reading that low at this time of the morning is a definite sign that we are turning the corner.  I recorded no more rainfall last night, after the 0.96" (2.4cm) of rain and melted hail that accumulated in my rain gauge during the few waves of thunderstorms yesterday afternoon and evening.

As I've tried to make clear on this blog over the years, both the arrival and the departure of the monsoon usually occur in fits and starts, surges and retreats.  It's normally not a sudden moment or one event that marks the beginning and/or end of the season.  However, there are stages that we go through -- relating to average daily rainfall rates, average daily humidity levels, thickness and duration of fog and cloud cover, etc.  All of these variables ebb and flow during the transition out of monsoon season, and that is what we're currently dealing with.

We've made great progress in the last 12 hours, thanks to that large batch of thunderstorms that pushed in from the west-northwest late yesterday.  The mid- and upper level winds have turned mostly to the west-northwest now, allowing much drier air from central Asia to filter into/across the western Himalayas.  As this drier air encounters lingering pockets of tropical moisture being stirred up by strong morning sunshine, we may yet see more development of some locally intense shower and thunderstorm action.  But as we move day-by-day through this week, it looks likely that the new drier air mass is going to begin to dominate.  Exciting times!

The latest monsoon info, along with your CURRENT FORECAST can be found on tabs above.