South Texas: Beneficial Rain, Coastal Flooding From Ingrid
By By Brian Edwards, Meteorologist
September 19, 2013, 1:36:33 AM EDT
As much of Deep South Texas remains in a state of extreme drought, some good news is on the way for residents as deep moisture continues to feed into the region from Ingrid.
Ingrid will produce life-threatening flooding and mudslides across parts of eastern Mexico through Tuesday. It made landfall near La Pesca, Mexico, around 7:00 a.m. CDT Monday.
While the heaviest rain will remain over Mexico, Ingrid will continue to send a surge of deep tropical moisture into South Texas.
Drenching periods of rain and occasional gusty thunderstorms are expected from Rio Grande City through McAllen and Brownsville through Monday. A couple of drenching showers and thunderstorms will still be around on Tuesday.
While it won't rain all the time, the heaviest of the downpours can produce rainfall rates of 1 to 2 inches per hour, which can lead to urban, arroyo and small stream flooding.
On average, through Tuesday, AccuWeather.com Meteorologists are expecting 2 to 4 inches of rain across Deep South Texas with locally higher amounts of up to 6 inches near and to the south of the Rio Grande River.
Expert Senior Meteorologist Alex Sosnowski stated that, "Any reasonable rainfall will be welcome by many residential and agricultural interests over the Rio Grande Valley."
With downpours expected to be scattered in nature over the next few days, AccuWeather.com meteorologists are not anticipating widespread, major flooding for South Texas. Instead, most of the rain that falls should be beneficial towards the ongoing drought.
However, should too much rain fall in a short period of time, there is always the potential for localized flash flooding.
"Enough rain could even fall to raise water levels on the lower part of the Rio Grande River," Expert Senior Meteorologist Dan Kottlowski said.
Along with the heavy rain threat, significant coastal flooding and beach erosion is likely during times of high tide.
Large swells will continue to impact the South Texas coast through Monday. These swells generated by Ingrid combined with very high astronomical tides will lead to beach and dune erosion as well as dangerous rip currents.
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