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Wednesday, January 25, 2017

a dynamic system... (pm.25.jan.17)>

Wednesday's stats:

Low temp: 45.0F (7.2C)
High temp: 55.0F (12.8C)
Precipitation: 1.34" (3.4cm) -- final total for the day

**Added @ 8:15pm...  An elongated tough of low pressure in the upper atmosphere extends from Kabul to southwestern Pakistan this evening, with a very strong fetch of mild and moist air flowing north-northeastward ahead of it.  It is quite unusual to get such a taste of mild tropical air like this during late January -- this has the look and feel of a very late February or early March system instead.  As you may have seen today, the snow line is very very high.

Periods of rain and thunder/lightning, will continue off and on overnight and Thursday, with colder air not arriving until Thursday night.  That's when we could see the freezing level come down the mountain slopes, with a chance of a turnover from rain to snow, especially just above McLeod.

By late Friday morning, the upper-level energy and main batch of moisture with this weather system will have shifted just east of us, and that should put an end to the precipitation.  A rapid upward trend in temperatures will occur again over the weekend, putting us back above normal for the season.

Even further ahead, we still have an active pattern to contend with as we move into the first week of February...