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December 29, 2009

High winds buffet cars, cut power

Woke up Monday and again Tuesday to the sound of wind roaring through the trees. And when I went to the drive-up ATM machine this morning, the wind caught the receipt as it emerged from the machine, and before I could grab it, the thing soared high into the swirl of leaves and trash around me and out of sight. The cash, happily, stayed put.

The cause is a "tight pressure gradient" - close proximity between a deep low-pressure center in the Canadian Maritime Provinces and a high in the Midwest. That is funneling a gusher of Canadian air into the Northeast, and we get stiff winds. And it's cold. Temperatures were dropping all night after the passage of a cold front, and seem to be struggling to reach the freezing mark at mid-day Tuesday. The wind chills are in the low 20s. Look for a low near 20 degrees tonight. Windy weather

The National Weather Service has issued a Wind Advisory for Central Maryland through 6 p.m. Tuesday, warning of sustained winds of 20 to 30 mph, gusting to 45 or 50 mph. Such winds can make driving difficult, especially for high-profile vehicles. Gale Warnings are in effect for the Maryland portion of the Chesapeake Bay, and the tidal Potomac River.

Here are some peak wind gusts around the region. Some have reached 50 mph.

Winds down at Baltimore-Washington International Thurgood Marshall Airport have been steady at more than 20 mph this morning, and gusting to 38 mph. BGE is reporting more than 13,000 customers have lost power since the windstorm began. More than 8,000 of those have already been restored.

Instruments at the Thomas Point Light are recording winds of 29 knots, gusting to 36, with falling temperatures.

(SUN PHOTO/Amy Davis/January 2000)

Posted by Frank Roylance at 11:17 AM | | Comments (0)
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About Frank Roylance
This site is the Maryland Weather archive. The current Maryland Weather blog can be found here.
Frank Roylance is a reporter for The Baltimore Sun. He came to Baltimore from New Bedford, Mass. in 1980 to join the old Evening Sun. He moved to the morning Sun when the papers merged in 1992, and has spent most of his time since covering science, including astronomy and the weather. One of The Baltimore Sun's first online Web logs, the Weather Blog debuted in October 2004. In June 2006 Frank also began writing comments on local weather and stargazing for The Baltimore Sun's print Weather Page. Frank also answers readers’ weather queries for the newspaper and the blog. Frank Roylance retired in October 2011. Maryland Weather is now being updated by members of The Baltimore Sun staff
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