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FLOOD Ed.
What you should know about floods and then some.
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FLOOD NEWS

Three inches of rain has fallen Austin
May 13, 2014




11:45 p.m. update: As much as three inches of rain have fallen across parts of the Austin area over the last two hours, according to the Lower Colorado River Authority.

Lady Bird Lake near Longhorn Dam and the Colorado River near U.S. 183 have seen about three inches of rain. Other areas range between an inch to two inches.

Most of the severe storms will have moved out of the area by about midnight, but moderate rains should continue for about an hour after that, according to the National Weather Service.

Several low-water crossings are closed, according to ATXFloods.com, and intersection lights have gone out. Drivers are asked to exercise caution.

A flash flood warning is still in effect in Travis and Hays counties until at least 1 a.m. A flash flood warning is in effect in Bastrop and Caldwell counties until 2:45 a.m.

11 p.m. update: Nearly an inch of rain has fallen across parts of the Austin area as a line of severe storms move through, according to the Lower Colorado River Authority.

Heavy rain will continue to fall for at least the next half hour or so in the Austin area before showers become more moderate, according to the National Weather Service. The system is already moving into Llano and Gillespie counties.

About 0.8 inches has fallen in the Colorado River near U.S. 183 and an inch has fallen in Manchaca since about 10 p.m. Dripping Springs has seen more than two inches.

Flash flood warnings for Hays and Travis counties will be in effect until about 1 a.m. Tuesday. South central Travis and eastern Hays counties have flash flood warnings in effect until 2:15 a.m. Tuesday. San Marcos and Buda could be affected.

Several low water crossings have been closed by the city out of fear that flood waters would rush over roads. Those closures include one at 15th and Red River streets, 3523 McNeil Dr. just off of Mopac Boulevard (Loop 1) and 10341 River Plantation Drive at Onion Creek.

Thousands are also without power in Williamson and Travis counties. Lightning caused at least one house fire in Northwest Austin Monday night.

Austin police said they are monitoring Onion Creek near where a historic flood happened on Halloween, but that no evacuations have been ordered as of 11 p.m. Monday.

10:20 p.m. update: The National Weather Service has issued flash flood warnings for Travis County and Hays County that will remain in effect until 1:15 a.m. and 1 a.m., respectively.

The service said that heavy rainfall could lead to flooding of small creeks, streams and low-lying areas. Drivers are urged to avoid those areas.

Austin Police have reported high water at northbound U.S. 183 at Mopac Boulevard (Loop 1) and Loyola Lane just east of Johnny Morris Road in East Austin. Low water crossings at 3523 McNeil Drive in Northwest Austin and River Planatation Bridge at Onion Creek in Southeast Austin are also closed.

About two to four inches of rain are expected to fall, but some areas could get up to half a foot, the service said. Hail, lightning and thunder is also expected.

Chances of rain should decrease throughout the night.

9:10 p.m. update: As storms passed through the Round Rock area and dumped nearly an inch of rain in some areas in just a half-hour, the National Weather Service issued an urban and small stream flood advisory. Marble-sized hail was also reported in Round Rock.

The advisory covers northern Travis County and southern Williamson County. The weather service expects minor flooding in Anderson Mill, Cedar Park, Pflugerville, Round Rock, Windemere, Hutto and Leander.

6 p.m. update: Severe storms could reach the Austin area by about 10 p.m.

The line of storms are currently extending between the Waco and San Saba area to the northwest and moving slowly, said Aaron Treadway with the service.

He said that about two to four inches of rain is still expected to fall and some isolated areas could see up to half a foot. Hail and damaging winds could accompany the severe weather.

A flash flood watch goes will be in effect from 7 p.m. to noon Tuesday for most of Central Texas including Travis, Hays, Williamson and Bastrop counties.

Rain chances will be good overnight until about 10 a.m. Tuesday.

The service urges drivers to turn around if the road is covered by water. Those conditions which typically occur in low-lying spots could be hard to see at night.

Update 12:45 p.m.: More than a quarter inch of rain has fallen in parts of Central Texas since midnight, and heavier rain is possible overnight, forecasters say.

Much of the area west of Austin has seen rain this morning, mostly less than then of an inch, according to readings from the Lower Colorado River Authority.

The highest rainfall totals have been in Fredericksburg, where two stations reported 0.34 and a quarter-inch of rain, the authority said.

Much of Central Texas will be under a flash flood watch from 7 p.m. Monday to noon Tuesday, according to the National Weather Service.

“Moist Gulf air, an upper-level trough and a cold front will combine to bring showers and thunderstorms to the area today through Tuesday night,” forecasters said in a statement. “Overall, expect widespread rainfall of 2-3 inches, with isolated totals up to 5 inches.”

The watch includes Travis, Williamson, Hays, Bastrop, Caldwell and Burnet counties.

Earlier: The National Weather Service has issued a flash flood watch for Central Texas from 7 p.m. Monday until noon Tuesday ahead of a cold front that will drop temperatures and could bring severe weather to the region.

Rainfall totals are expected to reach 1-3 inches across the area, though isolated spots could see 4-5 inches, the service said. Severe storms with damaging winds and hail are possible ahead of the front, the service said.

A flash flood watch means flooding is possible “in or near the watch area,” the service said. Low-water crossings, rivers and creeks could see elevated levels and flooding. The service reminds drivers to “Turn Around, Don’t Drown,” and to not cross roads covered in deep water.

The high today should be 85, the service said. Tuesday will only see a high of 66 along with a 50 percent chance of heavy rain throughout the day. Rain is expected to be heavy for the Tuesday morning commute, the service said.

Showers could continue into Tuesday night, with rain chances slightly tapering to 40 percent, the service said.

By Wednesday, the storms should have cleared out, leaving behind mostly sunny skies, gusty winds and a high of 70, the service said.