Weather

July 2, 2013

Flash flood watch extended as rain promises to just keep on coming

The National Weather Service said a Bermuda high off the coast is locking a rainy system in place over the Triangle for Tuesday and Wednesday, and a flash flood watch was extended into Wednesday evening.

It is certainly unusual, but it makes some sense in a waterlogged world to cheer a forecast that puts the chance of more rain all the way down to 50-50 by Wednesday night.

That is not, however, before more rain likely falls Tuesday (80 percent), Tuesday night (70 percent) and Wednesday (60 percent), and the National Weather Service has extended its flash flood watch for the Triangle through Wednesday evening.

WTVD meteorologist Don Schwenneker said that a frontal boundary “that’s just been stuck over us” is staying in place.

Weather service forecasters said a Bermuda high off the Atlantic coast is responsible for keeping the waterworks from moving away from the Triangle, and the same high-pressure area will push inland and raise temperatures by Independence Day, though that should also push away the clouds.

A compilation from the weather service showed that as of midday Monday, the Orange Water and Sewer Authority’s water treatment plant in Carrboro had recorded 7.94 inches of rain since midday Friday, and Horace Williams Airport in Chapel Hill scored 7.87 inches.

Raleigh Durham International Airport got off with what could be considered a deluge in a normal storm but was light for this one, 3.09 inches.

And a flood warning was extended until just after 9 a.m. Wednesday for areas near the Neuse River in Smithfield and Johnston County. The National Weather Service reported the river's flood stage was 15.4 feet as of 11:15 a.m. on Tuesday.

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