Update Since Last Briefing:
- New rain amounts forecast for today
- 1 to 2 inches with isolated 3 inches (See Graphic)
A Flash Flood watch remains in effect through 7 PM this evening for the following counties of the Rio Grande Plains and South Central Texas: Kinney, Uvalde, Medina, Maverick, Zavala, Frio, Dimmit, and Atascosa.
The Flash Flood Watch is cancelled for Val Verde, Edwards, Real, Kerr, Bandera, and Bexar.
Area of Concern:
Along and south of Hwy 90 and west of I-37.
Threats & Impacts:
Rainfall: 1 to 2 inches of additional rain with locally higher amounts of 3 inches in the area of concern. This area has already received one to eight inches of rain over the last few days (see attached graphic).
Flooding Impacts: Several locations may experience minor to moderate flooding with flood waters capable of causing rivers and tributaries to become swollen and over-spill their banks. Small streams, creeks and ditches will overflow with some low lying structures flooded. Flood waters may prompt several evacuations and road closures, especially in normally flood-prone areas.
Although heavy rain is no longer expected in Val Verde and Bexar Counties, they have received significant rain over the last few days and could flood easily with only moderate rain.
Timing and Overview:
A dissipated tropical storm from the Pacific combining with a slow-moving cold front and weak disturbance will support heavy rainfall today. Given the rocky soil and previous rain in the expected highest rainfall total location, river and flash flooding is of particular concern.
Rainfall amounts: Moderate
Flooding Impacts: Moderate
Additional Information Resources:
- NWS Austin / San Antonio Contact Numbers: 800-292-5508 or 830-606-3617
- NWS Austin / San Antonio Webpage: http://www.weather.gov/sanantonio
- Online Flood Reporting: http://www.srh.noaa.gov/StormReport/SubmitReport.php?site=EWX
- Sign up to be Rainfall Observer: http://cocorahs.org/Application.aspx
- AHPS River Forecasts: http://water.weather.gov/ahps2/index.php?wfo=ewx