Weather Alert in Texas

Recent Locations: Willow Grove, PA Laughlin, NV Conroe, TX

Flood Warning issued July 3 at 9:30AM CDT until July 3 at 7:15PM CDT by NWS Midland/Odessa TX

AREAS AFFECTED: Brewster, TX

DESCRIPTION: ...Forecast flooding changed from Moderate to Major severity for the following rivers in Texas... Rio Grande at Rio Grande at Rio Grande Village, BBNP, Texas affecting Brewster County. For the Rio Grande...including Rio Grande above Rio Conchos near Presidio, Texas, Rio Grande at Presidio Vehicle Bridge, Rio Grande below Rio Conchos near Presidio, Texas, Rio Grande near Castolon, Texas, Rio Grande at Johnson Ranch near Castolon, Texas, Rio Grande at Rio Grande Village, BBNP, Texas, Rio Grande near Dryden, Texas, Terlingua Creek near Terlingua, Texas...Major flooding is forecast. * WHAT...Major flooding is occurring and major flooding is forecast. * WHERE...Rio Grande at Rio Grande at Rio Grande Village, BBNP, Texas. * WHEN...Until this evening. * IMPACTS...At 12.0 feet (3.7 meters), the river reaches bankfull, and no damage is expected. Preparations may be necessary to remove water pumps. The park should be notified at this time if additional rises are expected so they will have time to remove the pumps. At 13.0 feet (4.0 meters), the river reaches minor flood stage. Water reaches the water pumps maintained by the park service that are used to water the campgrounds and to provide water to the employee living quarters. It may be necessary for park personnel to remove the pumps. At 15.0 feet (4.6 meters), the river reaches moderate flood stage. Water pumps submerge. At 19.0 feet (5.8 meters), the river reaches the bottom of telemetry box near the pump house. At 20.0 feet (6.1 meters), the river reaches major flood stage. Rio Grande Village campground begins to flood. Evacuations may be necessary. The rain gauge near pump house will be affected. At 22.0 feet (6.7 meters), the river completely submerges the telemetry box near the pump house, rendering it useless. * ADDITIONAL DETAILS... - At 9:00 AM CDT Thursday the stage was 20.7 feet (6.3 meters). - Bankfull stage is 12.0 feet (3.7 meters). - Recent Activity...The maximum river stage in the 24 hours ending at 9:00 AM CDT Thursday was 20.7 feet (6.3 meters). - Forecast...The river is expected to fall below flood stage this evening and continue falling to 6.5 feet (2.0 meters) Tuesday morning. - Flood stage is 13.0 feet (4.0 meters). - Flood History...This crest compares to a previous crest of 21.0 feet (6.4 meters) on 10/03/1990. - http://www.weather.gov/safety/flood

INSTRUCTION: Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Please report observed flooding to local emergency services or law enforcement and request they pass this information to the National Weather Service when you can do so safely. Caution is urged when walking near riverbanks. Additional information is available at www.weather.gov. The next statement will be issued this evening at 715 PM CDT.

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Weather Topic: What are Cirrus Clouds?

Home - Education - Cloud Types - Cirrus Clouds

Next Topic: Condensation

Cirrus clouds are high-level clouds that occur above 20,000 feet and are composed mainly of ice crystals. They are thin and wispy in appearance.

What do they indicate?
They are often the first sign of an approaching storm.

Next Topic: Condensation

Weather Topic: What are Contrails?

Home - Education - Cloud Types - Contrails

Next Topic: Cumulonimbus Clouds

A contrail is an artificial cloud, created by the passing of an aircraft.

Contrails form because water vapor in the exhaust of aircraft engines is suspended in the air under certain temperatures and humidity conditions. These contrails are called exhaust contrails.

Another type of contrail can form due to a temporary reduction in air pressure moving over the plane's surface, causing condensation. These are called aerodynamic contrails.

When you can see your breath on a cold day, it is also because of condensation. The reason contrails last longer than the condensation from your breath is because the water in contrails freezes into ice particles.

Next Topic: Cumulonimbus Clouds