MU's Current Conditions: (at 06:47) Temp: 69 F | Dew Point: N/A | Wind: S - 1 mph
SPECIAL WEATHER DISCUSSION (Updated twice weekly, but more often when storms threaten.)

* Dog Days of Summer Soon To End? *

Monday, August 19, 2019:
I've just returned from a week in the mountains of British Columbia, and it seems some of the cool mountain air may soon follow me home to Pennsylvania. I see signs of a significant pattern change that would make for a major break--and perhaps end--of the recent heat and humidity. But first, we'll have to endure a few more days of oppressive conditions.

Today through Wednesday will feature warm, muggy dog days conditions with a few scattered pop-up showers/storms each afternoon and evening. The higher risk day looks to be Wednesday as a cold front approaches slowly from the west late in the day...but again, I can't rule out a stray storm hitting a few spots today or Tuesday as well.

Thursday into Friday is the transition period when the cold front will limp through, so that Thursday will feature lots of clouds and likely some scattered showers. There's even a chance that a wave of low pressure will develop along the front--if so, this would slow the eastward movement and, thus, extend the chance of some rain into Friday (uncertain).

Eventually a cool, drying breeze will develop out of the Northwest sometime late Thursday or Friday as a Canadian high pressure system builds in for the weekend. Assuming this high pressure successfully takes control, then a spectacular almost early-fall-like weekend would develop with highs in the 70s and overnight lows in the 50s.

Next week will likely bring a modest warming trend into midweek, but with high temps rising only into the low 80s. Another jet stream trough and cold front may move through during the midweek with a chance of showers. More important, another shot of comfortable Canadian air may follow into the Labor Day weekend. --Horst


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