Drought Denting Rains Continue
Deep atmospheric moisture pooled across Deep South Texas and northeast Mexico, combining with a nearly stationary upper level disturbance, will continue the redevelopment of numerous showers and a few thunderstorms across the Lower Rio Grande Valley and the adjacent Gulf of Mexico waters through at least July 8th. From July 1st through early on July 6th, a swath of 2 to 4 inches of rain had fallen between eastern Hidalgo and much of Cameron County.
Additional rainfall of similar totals across the Lower Rio Grande Valley, along with an uptick in rainfall out toward the Rio Grande Plains (upper right figure) should produce a swath of 4 to 8 inch rains by Tuesday evening. Heavier rain bands, or stronger individual cells, could push some totals above 10 inches for the first eight days of July. As of 7 AM on July 6th, more than 5 inches had fallen at Rancho Viejo and San Benito, respectively. A summary of accumulated rainfall through early on the 6th can be found here.
While the rain is being soaked up by thirsty grasses, trees, and plants, the lack of significant daytime heating during breaks in the rain is maintaining high relative humidity, which in turn is allowing top soils to saturate quickly. Additional heavy rains, particularly in poor drainage urban areas, will likely create nuisance flood problems early this coming work week during any torrential rains. In rural areas, additional rains could produce rapid rises of streams, creeks, and arroyos along with localized flooding of low water crossings. Residents of Deep South Texas and the Lower Rio Grande Valley should continue to monitor weather conditions through at least Tuesday, and remain alert to flood watches, warnings, or advisories for their area.
If high water is observed, do not drive your vehicle into areas where the water covers the road. The depth of the water may be too great to allow you to cross safely. If travels take you near known poor drainage locations, consider bringing a life jacket along. Always remember: Don't become a statistic. Turn around, Don't DrownTM!
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