PM Update: Still delightful, but maybe stormy tomorrow

Hurricane Tracking Center with Tweets from NHC

The south wind is back and you may be feeling that extra bit of moisture streaming into the area. Still, it’s pretty difficult to complain about a day like this -- especially considering the lack of shaking! Temperatures are topping out in the mid-to-upper 80s. That south breeze is rather fresh though, so added mixing of the air just adds to the pleasantness.

Temperatures: Latest D.C. area temperature map. See interactve map on our Weather Wall.

Through Tonight: After a glorious evening, partly cloudy skies and a wind from the south keep temperatures up again. Lows reach the upper 60s to lower 70s.

Tomorrow (Thursday): A cold front approaching and eventually moving through the area sets the tone for the day. Moderately humid morning air sees continual building of clouds heading into the midday and afternoon. By early afternoon, scattered showers and storms should be breaking out across the area (60% chance). Along with heavy rain potential, a few storms may be severe with strong winds or large hail, though the best odds for such appear to be northeast of the area. Highs should top out in the mid-80s to near 90.

See Dan Stillman’s forecast through the weekend. And if you haven’t already, join us on Facebook and follow us on Twitter .

Irene in the Bahamas: Hurricane Irene now has sustained winds of 120 mph and it continues to strengthen. Water temperatures in the Bahamas are running about 83-86 degrees, and coupled with a favorable environment and excellent appearance, Irene promises to deliver one of the stronger hits the country has seen in some time. Already, Mayaguana Island has sustained significant damage with over 18 hours of strong winds. Irene is expected to travel through much of the island chain, with the official track bringing it perilously close to Nassau, Abaco, and Grand Bahama as a Category 4.

Pollen update: Susan Kosisky of Walter Reed writes, “Grass pollen is MODERATE at 4.79 gr/cubic meter. Weed pollen is MODERATE (NAB range) at 14.7 gr/cubic meter, which is High for local area weed counts. Mold spores are in the MODERATE range at 10,235.43 spores/cubic meter of air.”

Ian Livingston is a forecaster/photographer and information lead for the Capital Weather Gang. By day, Ian is a defense and national security researcher at a D.C. think tank.

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