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Posted at 05:00 AM ET, 05/18/2011

Forecast: Mother Nature stuck in place

Stagnant weather pattern may break by weekend

updated at 10 a.m.

* Flash Flood Watch for entire area through evening for possible rainfall rates of 1-2” during showers/storms; Flood Warning for Potomac River near Little Falls (affecting Montgomery & Fairfax counties); Coastal Flood Warning for D.C., Alexandria and western shore of Chesapeake Bay until noon (then Coastal Flood Advisory until 6 a.m. Thurs.); Coastal Flood Advisory for remainder of tidal Potomac until 6 a.m. Thurs. *

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

 
These days haven't been half bad with plenty of downtime between showers/storms. Expecting more of the same.
 
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EXPRESS FORECAST

Today: Partly to mostly cloudy. Periodic shower/storm possible (60% chance). Mid-70s. | Tonight: Shower/storm chances continue around 50%. Upper 50s to low 60s. | Tomorrow: Mostly cloudy. 50-60% chance of a shower/storm. Low-to-mid 70s. | A Look Ahead | Get Express Forecast by E-mail

FORECAST IN DETAIL

We’ve had our share of zany weather in recent months, and years really. Now it seems Mother Nature has run out of gas, with this same old weather pattern - partly to mostly cloudy, occasionally showery/stormy, highs mainly in the 70s - poised to stick around a few more days. It’s no guarantee, but there’s an increasing chance she’ll start to mix things up again with a warmer, sunnier and drier weekend.


Radar & lightning: Latest regional radar shows movement of precipitation and lightning strikes over past two hours. Refresh page to update. Click here or on image to enlarge. Or see radar bigger on our Weather Wall.

Today (Wednesday): The weather pattern is complicated, as we talked about yesterday, yet the forecast is relatively easy - same as yesterday. Still under the influence of upper-level low pressure, we continue fairly humid with partly to mostly cloudy skies and the potential (60% chance) for a periodic and possibly heavy shower or thunderstorm, but likely with extended breaks in between. Afternoon highs should manage the mid-70s. Confidence: Medium

Tonight: A periodic shower or storm remains a risk (50% chance) through the night. Could also be some areas of fog and/or mist - otherwise it’s mostly cloudy as lows drop to the upper 50s to low 60s. Confidence: Medium

Keep reading for the forecast through the weekend...

Tomorrow (Thursday): The beat goes on with mostly cloudy skies and a 50-60% chance of a shower/storm (especially in the afternoon) at any given location. We should be a bit less humid than today with highs aiming for the low-to-mid 70s. Confidence: Medium

Tomorrow night: Shower/storm chances continue but scale back to more like 40-50%. Lows are likely similar to tonight, in the upper 50s to low 60s under partly cloudy skies. Confidence: Low-Medium

A LOOK AHEAD

Still reading? Not yet bored out of your mind by the broken-record forecast? Let me try again: Friday brings more shower and storm chances, but down a bit further to around 30-40% with partly to mostly cloudy skies and highs in the mid-to-upper 70s (again, shouldn’t be as humid as recent days). Shower/storm chances continue their gradual decline Friday night to about 20-30% with the usual upper 50s to low 60s for lows. Confidence: Low-Medium

I’m not yet ready to completely dismiss the chance of a pop-up shower or thunderstorm this weekend, but I’d say odds go down to around 20% or less. Skies should be at least partly sunny and we warm up nicely to highs in the upper 70s to mid-80s and not too humid. Confidence: Medium

By  |  05:00 AM ET, 05/18/2011

Categories:  Forecasts

 
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