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Posted at 3:15 PM ET, 09/ 2/2008

PM Update: Cloud Free and Rather Toasty

By Ian Livingston

Continued sunny and hot on Wednesday

September is generally the beginning of the end of heat around the area but the next few days won't play by those rules. Today's highs are running about 5-8 degrees above average, as most places hit the upper 80s to near 90 this afternoon with nary a cloud to be seen. This evening should be quite pleasant for any outdoor activities as temperatures drop back through the 80s into the upper 70s around sunset.

Tonight: Clear skies and near average temperatures will set the stage for a nice night. Look for lows to range from the upper 50s in the cooler suburbs to the mid 60s in the D.C. heat island.

Tomorrow: Wednesday will again be quite hot for September. Fortunately, humidity will remain rather low through much of the day, so it will be bearable. Expect highs to reach 90 or above across most of the area as sunshine dominates the day.

Tropics: Now in the peak of hurricane season, things have become extremely active across the Atlantic basin. We are tracking Hanna closely to see how it will affect weather in the local area later this week. In addition to Hanna, Tropical Storm Ike and newly formed Tropical Storm Josephine are moving west across the ocean. Ike may begin to threaten the U.S. by late in the upcoming weekend when it is expected to be in the Bahamas, and Josephine will need to be monitored as well for a possible impact sometime at the end of next week.

See Matt's full forecast through the weekend and NatCast for the outlook for tonight's game.

By Ian Livingston  | September 2, 2008; 3:15 PM ET
Categories:  Forecasts  
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Next: NatCast: Nice 'n Warm

Comments

Thank goodness the dewpoint remains so low (in the 50s)
Otherwise, these 90 degree readings this week would be August-like and unbearable! That UV really will pour down too.

Is everybody putting on their sunscreen?

Posted by: Camden, Capital Weather Gang | September 2, 2008 3:28 PM | Report abuse

Today was the 30th day this year of temperatures 90 or higher at National Airport.

Posted by: Ian, Capital Weather Gang | September 2, 2008 4:25 PM | Report abuse

Yes, Camden, sunscreen! :-)

Posted by: ~sg | September 2, 2008 5:27 PM | Report abuse

At least one day after Labor Day over 90F. There could be more. [Someone last week was loudly proclaiming "no more ninety-degree days". I disagreed with good reason. One of the "analog years" for this summer's forecast, if memory serves me right, was 1954.]

If I'm correct, the record 90+ degree heat wave in October, with 90F on Oct. 11 occurred in 1954, just prior to the passage of Hurricane Hazel. History seems to be repeating itself, though Hanna is not expected to reach anywhere near Hazel's Category 4 strength.

Posted by: Anonymous | September 2, 2008 6:54 PM | Report abuse

It's a track worth watching...

Posted by: mcleaNed | September 2, 2008 7:34 PM | Report abuse

Look 4 Sept & Oct 2 b above average in temps. Expect a change in pattern sometime in Nov. Winter still looking average 2 slightly above, with average 2 slightly below snow. Definetly a little colder than the last few yrs.

Posted by: VaTechBob. | September 2, 2008 10:04 PM | Report abuse

Interesting note on Hanna from the latest Hurricane Center info is that they now keep it as a tropical storm all the way to a point just northwest of D.C. on Saturday evening. It would be moving rapidly at that point, lending some credence to the scenario since it wouldn't have that much time to weaken. However, there is a lot of uncertainty in intensity forecasting so far in advance, not to mention uncertainties in the track forecast.

From the NHC discussion: "AT 96 HOURS...HANNA WAS MAINTAINED AS A TROPICAL STORM...BECAUSE IT IS PREDICTED TO BE FAIRLY CLOSE TO THE COAST OF THE NORTHEAST UNITED STATES AND THERE COULD STILL BE TROPICAL STORM FORCE WINDS OVER WATER AT THAT TIME."

Posted by: Andrew Freedman, Capital Weather Gang | September 2, 2008 11:52 PM | Report abuse

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