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Posted at 05:00 AM ET, 08/21/2011

Forecast: Storms threaten to rumble through, then really nice

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

 
Good chance of storms provides some afternoon excitement, but it's decent before then, even if quite warm and more humid.
 
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EXPRESS FORECAST

Today: Partly sunny. 60% chance of p.m. storms. Upper 80s to near 90. | Tonight: 40% chance of evening storms. Mid-60s to near 70. | Tomorrow: Partly to mostly sunny, pleasant. Mid-to-upper 80s. | A Look Ahead | Get Express Forecast by E-mail

FORECAST IN DETAIL

After a splendid day yesterday, rain chances are back in the forecast to close out the weekend. And with those chances comes the possibility of some pretty rough weather. The Storm Prediction Center has the area under a slight risk for severe t-storms this afternoon, so if you plan to be out, earlier may be better than later. Once we get through today’s storm threat, we’re rewarded nicely with fantastic weather tomorrow into midweek, as we keep our eye on a tropical system that could bother the East Coast by the weekend.

Today (Sunday): A light passing shower isn’t out of the question for the morning through early afternoon. But the main story is a pretty good chance, 60%, for some thunderstorms come mid-to-late afternoon. Skies are partly sunny - possibly enough sun to destabilize the atmosphere such that some storms could turn severe with damaging winds and/or hail, in addition to heavy rain. Highs get up to the muggy upper 80s to near 90. Confidence: Medium

Thundercast:

Probability: 60%
Coverage: Scattered-Widespread
Most Likely Timing: 3-10 p.m.

Tonight: Storm chances linger at around 40% into the evening, especially eastern sections, before skies begin to clear overnight. Winds swing around to come from the northwest after the front passes through from west to east. Lows likely vary from the mid-60s in the western suburbs to the upper 60s to near 70 downtown and east. Confidence: Medium

Keep reading for the forecast through midweek...

Tomorrow (Monday): As luck would have it, the forecast improves markedly as we all head back to work. As high pressure moves in, a cooler and drier air mass spells a few days of weather we could get used to, starting with Monday’s partly to mostly sunny skies, refreshing breezes from the north/northwest and lowering humidity. Highs in the mid-to-upper 80s are about as fine as can be, only to be outdone by Tuesday. Confidence: High

Tomorrow night: As nice as the daytime is, tomorrow night follows suit. Mostly starry skies let the daytime warmth escape nicely - downtown likely gets down to the low 60s while the suburbs should dip all the way to the upper 50s. Confidence: High

A LOOK AHEAD

Tuesday is the star of the week weather-wise. After a cool, comfy start, mostly sunny skies only manage to push highs to the low-to-mid 80s. With humidity a non-factor - dew points potentially all the way down in the 40s - I’m sure we’ll be dusting off the “Nice Day Sun“ (that is if it doesn’t make an appearance tomorrow first). Expect another starlit night Tuesday night, with clear skies and lows in the mid-to-upper 50s (suburbs) to the low 60s (downtown). Confidence: High

While not as gorgeous as Tuesday, Wednesday is still nothing to shake a stick at. Humidity creeps back up ahead of our next front, though it’s still on the low side compared to typical August fare, and temperatures go a bit higher as they aim for highs in the upper 80s. Mostly clear skies may see some clouds creep in toward evening, but shower chances are only around 10% or less. Confidence: Medium-High

Tropical Threat? Models continue to indicate the potential for a tropical system - what is currently Tropical Storm Irene, in the northeastern Caribbean Sea - to affect the East Coast between Thursday and Monday. Of course, there’s an abundance of uncertainty this far out, but check in tomorrow and all week for the latest.

By  |  05:00 AM ET, 08/21/2011

Categories:  Forecasts

 
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