PM Update: Cold front to deliver a delightful Thursday; a swirl in the Gulf


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.

It was another “try and spot a cloud” type of day for much of the time. With fairly light winds and moderate levels of humidity, it was feeling very summerlike for sure! A cold front headed this way will pass somewhat uneventfully. It sends us fresh and drier air in its wake, setting us up for a beautiful Thursday.

Through Tonight: As the cold front approaches, there’s a slight chance that isolated showers or some rumbles make it in this evening. The highest risk is over northwest parts of the area where some activity may spread in shortly. Winds swing around to the northwest around or after midnight, blowing 5-10 mph or so. With cooler and drier air waiting till late to arrive, lows only make the low-to-mid 60s in the suburbs to around 70 downtown.

Tomorrow (Thursday): Stubborn post-frontal clouds could be around in the morning, but the trend should be toward mostly sunny if that’s the case. A warm “northwest flow” day should equal lower humidity and fairly pleasant — if near normal — temperatures. Highs mostly rise to the mid-80s, as winds blow around 10 mph with higher gusts.

See Dan Stillman’s forecast through the weekend. And if you haven’t already, join us on Facebook and follow us on Twitter . For related traffic news, check out Dr. Gridlock.


Softball on the Mall. (Joe Newman via Flickr)

Pollen update: Weed pollen is low/moderate, with ragweed dominant but a little lower than normal this time of year. Mold spores are moderate. Tree and grass pollen is low.

Gulf of Mexico disturbance: A little swirl of clouds is approaching the south Texas coast this afternoon. While there was some risk of slight intensification before landfall, the odds of it becoming a tropical cyclone are rather low, especially since it’s almost out of time over water.

Visible satellite of the Gulf of Mexico swirl today. See live view. (NOAA, modified by CWG)
Visible satellite of the Gulf of Mexico swirl today. See live view. (NOAA, modified by CWG)

The latest update from the National Hurricane Center states:

Data from an Air Force Reserve Hurricane Hunter aircraft investigating the weak area of low pressure over the northwestern Gulf of Mexico indicate that the system does not have a well-defined circulation. The associated thunderstorm activity has also diminished some since this morning. However, some limited development of this system is still possible before it moves inland over south Texas and northern Mexico on Thursday.

The main risk from this system is for increased rainfall along its path. But even there, not a whole lot is expected. Much of the region is in drought, so any rain that falls should be good news!


Rain forecast over the next 2 days from the Weather Prediction Center.
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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Angela Fritz · August 27, 2014