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Weather Journal

A few more showers from "Dolly" before the heat wave begins

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A shower moves from Fort Lewis Mountain over the Roanoke Valley about 5 p.m. Click here for a bigger look at this photo.

Roanoke only got .13 inch of rain before 5 p.m., but there was widespread coverage of light to moderate rainfall amounts today across most of Southwest Virginia. A smattering of showers is all that's left this evening, as shown by this National Weather Service radar screen grab shortly after 5 p.m. As expected earlier today, the stronger storms fired to our southeast, where there was more heating. This little pocket of showers -- with maybe a couple of lightning bolts or a brief wind gust here and there -- is all that's left for us of this system, which is a combined effort of a weak cold front, an upper-level impulse, and the very dispersed remnants of what was once Category 2 Hurricane Dolly, which hit south Texas 8 days ago.

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Once the weak front passes us and washes out, the atmosphere will begin drying out and high temperatures will start climbing. By Sunday, expect widespread 90s, and don't rule out a few triple-digit readings early next week, especially in Southside Virginia. There are still some factors to weight as to whether this upcoming hot spell -- caused by high pressure expanding eastward from the central U.S, as depicted on this Climate Prediction Center Hazards Assessment map. -- will stretch longer than Tuesday to begin a substantial August heat wave, or whether a new dip in the jet stream near the Great Lakes might nudge the high enough either east or back to the west to short-circuit the heat after 3 or 4 days. Being early August, we should not be surprised by a few days of mid-90s temperatures in Roanoke, but though we hit 100 four times in August 2007, the century mark is still a pretty unusual occurrence in the Star City.

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About this blog

    Mug of Kevin Myatt

    Kevin Myatt works on the copy desk for The Roanoke Times and is its principal weather geek, writing a weekly weather column and advising the newsroom on weather topics. He helps guide students on a storm chasing trip to the central U.S. each May and was an editor for "Hurricanes and the Middle Atlantic States."

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Comments

    • Zach: Jus somethig interesting here, - ridges in Highland County are reporting up to 1″ of snow, with 1-2 more...
    • Other John: I wound up driving through a lot of rain last night on the way back to the area, though thankfully it...
    • Other John: Watching the latest update, it’s up to CAT 2 and the Weather Channel folks are showing the low...
    • Wanda: Wishing you well with your family…Take care.
    • Kevin Myatt: By the way … there were 261 entries in the snowfall prediction contest, 50 more than last year...