Wednesday Tornadoes and Thursday Morning Squall Line

April 10, 2008 at 7:01 pm | Posted in Uncategorized | Leave a comment
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A squall line blew through the Metroplex between 3am and 5am this morning, as we forecast last night at 10pm. Squall lines typically produce very strong wind gusts, and infrequently produce small tornadoes. We saw some of each early this morning.The National Weather Service was out conducting storm damage surveys this afternoon. So far, they have confirmed a few tornadoes. The first occurred Wednesday afternoon in Breckenridge, and was rated EF-1, with estimated wind speeds of 100 to 110 mph. The same storm later produced another tornado east of Graford, near Oran. It was also EF-1, but a bit weaker, with estimated winds of 85 – 90 mph.
The squall line generally produced strong straight line winds early this morning. Here are the highest gusts recorded at several local airports:
Mineral Wells – 60 mph

Fort Worth – 63 mphDallas – 58 mphDenton – 58 mph

DFW Airport – 75 mph

McKinney – 87 mph

The initial damage surveys have identified the damage in DeSoto as having been caused by an EF-1 tornado. Elsewhere, most of the damage has been assumed to be caused by straight line winds. But whether rotating, or straight, winds of 75 to 87 mph can cause tremendous damage.

Here are a couple of links with more information:

Enhanced Fujita Scale:

Storm Damage Survey:

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