Saturday, January 18, 2014

moisture visitation... (am.18.jan.14)>

*Update @ 9:23am... Fog is thick here in the upper part of town, as the temp holds near 40F (4.5C).  Still some light drizzle and random raindrops, but not registering in the rain gauge.  By the way, total precipitation for the entire month of January has been just 0.26" (6mm)!

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We have clouds, fog, drizzle, and some very light rain in the area just before sunrise on this Saturday, but at least thus far, there is nothing measurable in the rain gauge.  The current temperature and overnight low is 39.7F (4.3C), and humidity is at 92%.

The center of our latest upper-level disturbance is over southern Punjab, and is projected to slowly make its way to somewhere between Shimla and Derhadun by early this evening.  The widespread area of rain and thunderstorms which erupted across the plains of northern India late yesterday afternoon has now weakened and pushed well off to the east, into eastern Uttar Pradesh, Bihar, and much of Nepal.  Some of that moisture has managed to get drawn into the low pressure circulation itself, however, and that's what's providing us with our light precipitation and nearly saturated conditions this morning.

There's some sub-freezing air not too far above us -- and as this system moves by just to our south today, there is definitely the possibility that we could see some snow mixing in with the light rain, with some accumulations not out of the question... especially above McLeod.  It's not a major winter storm we're dealing with, but it's at least as interesting as anything else we've seen this month so far.  And today will rival the coldest days of this winter season to top it off.

A ridge of high pressure will build across northern India tomorrow and Monday, introducing a return to much warmer air in the mid- and upper-levels of the atmosphere.  Temperatures will rebound, but an inversion layer may prevent the sun from spending too much time with us.  Then -- we'll await the next upper-level disturbance which is scheduled for late Tuesday through Wednesday.

CURRENT FORECAST details can be found on the tab above, and check back here for any pertinent updates.