NWS Predicts Rainy Weekend For The Rio Grande Valley

From the National Weather Service:

Series of fairly vigorous upper level disturbances will move across northeastern Mexico and the Rio Grande Valley from east to west through the weekend and likely into early next week, acting on deep tropical moisture to produce widespread, frequent showers and thunderstorms with locally torrential rainfall. None of this is associated with Karl, which made landfall this afternoon near Veracruz (city). However, the broader circulation which birthed Karl is partly responsible.

Details, in Brief:

Friday's rain will begin "priming the pump" for increasing runoff as the weekend progresses. After this afternoon's rainfall (which could drop 1 to 2 inches near the coast and < 1 inch area-wide inland), expect a break Friday evening.

Friday Night: Showers/storms will become numerous over the Lower Texas Gulf waters and move onshore before daybreak Saturday.

Saturday: Widespread rain, locally heavy, will quickly cover most of the Rio Grande Valley and Deep South Texas through the morning and into early to mid afternoon before tapering off from east to west. 2 to 4 inches of rain east, and 1 to 2 inches of rain west (locally up to an inch or two more in persistent bands) is likely. A Flash Flood Watch will be in effect Saturday and expect plenty of nuisance flooding in poor drainage areas with perhaps some more serious property/life threatening flash flooding.

Saturday Night: Light to locally moderate rains may continue into the evening west, and redevelop in the Gulf after midnight before moving onshore again before daybreak Sunday.

Sunday: Could look a lot like Saturday. Another 1 to 3 inches area wide, locally higher in persistent bands. Concern is growing for very heavy rainfall Saturday night and Sunday across the foothills and higher terrain of the Sierra Madre. There is increasing confidence of more than 6 inches of rain falling in mountainous locations which drain into the Rio Grande Basin, and now some confidence of 10 inches or more occurring during this time frame.

Continuous updates available at http://weather.gov/rgv