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Posted at 05:00 AM ET, 09/08/2011

Forecast: Flood risk to slowly wane but umbrella weather continues; weekend improvement

updated at 7:30 a.m. and 9:45 a.m.
Area flood warnings for rising streams/creeks for District and most suburbs (except far west) thru late afternoon. | Flash Flood Watch thru late tonight

Road/traffic conditions: Dr Gridlock | Hurricane Tracking Center

1:00 p.m. update: While not as widespread as yesterday, a narrow band of torrential rain has set up in the western suburbs from southeast Prince William county north along and west of the west side of the beltway in Va. into the central and western Montgomery county and eastern Frederick county. Flash Flood Warnings are in effect for these areas into the afternoon. One to three inches of additional rain is possible.

Today's Daily Digit
 
A somewhat subjective rating of the
day's weather, on a scale of 0 to 10.

 
I know we probably won't be washed off the roads today like Wed., but even a rain lover like me is ready to surrender.
 
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EXPRESS FORECAST

Today: Showers likely. 79-84. | Tonight: Cloudy, occasional showers. 64-68. | Tomorrow: Cloudy, scattered showers. 80-85. | Get Express Forecast by E-mail

FORECAST IN DETAIL

Okay, I think I have figured this out. We have become the “India of the East Coast”; first, lots and lots of heat and then the monsoon sets in! We have already received more than our month’s worth of rain in the first week. At least today’s rain should not be as heavy and persistent as yesterday’s. But with saturated soils, just a little rain may cause additional flooding in some areas. This weekend should be more benign, but there is still not a day I can recommend going out without an umbrella.

Today (Thursday): Allow extra time for the commute given last night’s deluge. While hurricane Katia is hundreds of miles offshore, it’s locking in Lee’s remnants. Clouds dominate and showers are likely to be frequent with a stray thundershower or two also quite likely (80% chance), especially during the afternoon/evening. The breeze from the east clocks in at a sedate 5 mph. Highs are held down to the low-to-mid 80s. Confidence: Medium-High

Tonight: Skies remain densely overcast and showers linger through the evening, 70% probability. At least the temperatures are kind with 70s across the area. That humid air is going nowhere. Overnight lows slip to the mid-to-upper 60s. Confidence: Medium-High

Keep reading for the forecast through the weekend...

Tomorrow (Friday): A glimpse of the sun is possible but do not bet on it. The humidity is just slightly lower but showers are still a good possibility, with at least half of the area likely to get wet down at least once during the day. Look for a very light breeze from the north. Highs are seasonable, ranging from the low-to-mid 80s. Confidence: Medium-High

Tomorrow night: Clouds hold firm and an occasional shower seems like a fact of life. Again, about half of the area should find a use for their umbrellas. Evening readings sit comfortably in the 70s. Overnight lows bottom in the mid-to-upper 60s. Confidence: High

A LOOK AHEAD

Brace yourself for a novelty on Saturday: the sun finally returns. But we still contend with plenty of clouds, especially in the afternoon. At least showers should be fewer with only about a quarter of the area seeing rain in the late afternoon or early evening. Humidiy is a teensy bit lower as well. Highs are getting in a rut, topping out in the low-to-mid 80s. The evening readings invite us out as they range mainly in the low-to-mid 70s. Lows should slip to the low-to-mid 60s. Confidence: Medium-High

Sunday is likely to start out with fewer clouds but could end up with more of them by afternoon as the last vestiges of tropical storm Lee make their way across the region and out to sea. Rain chances rise to 40% and a few thundershowers are likely to be mixed in. Highs should slip back a bit with upper 70s to lower 80s on tap. Clouds linger in the evening as may a shower or two. Overnight lows range from the mid-to-upper 60s. Confidence: Medium

As you would expect, Monday is a lovely day with mostly sunny skies and mild readings. There is only a 20% chance of a stray shower. Highs hold in the low-to-mid 80s. Look for the harvest moon to rise in the evening! Confidence: Medium

By  |  05:00 AM ET, 09/08/2011

Categories:  Forecasts

 
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