Tuesday, July 24, 2012

Damaging Wind Threat Increases in East

The National Weather Service has issued a severe thunderstorm watch for the Middle Atlantic region effective until 8pm EDT.
Note the likelihood of winds 58 mph or more is "high" and winds of 75 mph or more is "moderate."

Two posts down, I talk about the large area covered by the National Weather Service's severe weather outlook. The thunderstorms have already left a trail of wind damage. AccuWeather has details.

As forecast, the chances of damaging winds are increasing in the East. And, if they can get organized, we might see widespread damaging winds or even a derecho. Here is the Storm Prediction Center's map which shows where conditions are generally favorable for a derecho (values of 2 or higher).
Wind speeds may be especially high in North Carolina and southern Virginia if thunderstorms move over those areas.

AccuWeather Regional Radar at 1:14pm EDT shows thunderstorms rapidly developing.  Note the storms approaching Boston's Logan Airport.
Air travel is already a mess at O'Hare due to the earlier thunderstorms and at Reagan, Dulles, BWI, Newark and LaGuardia (there are also delays in San Francisco due to low clouds). These will get worse as the thunderstorms become more widespread.

Note: I will not be live-blogging these storms.

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