Latest from NOAA 2pm-7-2


Looking at radar at 2:20 pm., it is starting to fill in with lots of red as tropical "poppers" make their way toward San Antonio. With an abundance of moisture in the form of ridiculously high dew points, some heavy rain appears to be eminent. My storm total in Helotes so far is 1.5 inches.

Here is the latest from NOAA:

The rich tropical atmosphere is very apparent as soon as you step outside. This is leading to the widespread showers and thunderstorms that are moving across most areas of South Central Texas early this afternoon. A Flash Flood Watch remains in effect until 7 pm tonight...and will likely be extended until 7 am Saturday. Only minor flood issues are ongoing across some areas of South Central Texas as the storms are moving fairly quick at 30 mph and rain rates have averaged under 1 inch per hour. But as the afternoon progresses and some areas get additional showers/storms to train over the same areas, the threat for heavier rain and flooding will increase. Widespread rains of 1-2 inches are possible with isolated totals near 4 to 5 inches.

There will be a lot of people on the road later today trying to get a jump start on their holiday weekend...so please be careful and Turn Around Dont Drown. Dont risk driving through the flooded roadways and low water crossings. Many will be staying at camp grounds next to or along creeks, streams, or rivers. These areas are particularly dangerous during these heavy rain events. And as we saw several weeks ago with the flood in New Braunfels and in Arkansas...flooding at night can be particularly deadly. Stay tuned to NOAA Weather Radio and the National Weather Service website for the latest watches, warnings, and advisories.... www.srh.noaa.gov/ewx

The heavy rain from Alex over northern Mexico is draining into the Rio Grande and is leading to some moderate flooding just above Lake Amistad. Areas near and along the Rio Grande should pay particular attention to the weather and forecasts of the Rio Grande as well as other areas rivers and creeks. They can be monitored from the following website...http://water.weather.gov/ahps2/index.php?wfo=ewx

As the holiday weekend quickly approaches...scattered showers and thunderstorms with locally heavy downpours will occur again on Saturday, with roughly a 40-50 percent chance for rain mainly in the morning through evening hours. On the 4th of July, will still carry a 30-40% chance of rain...with chances dropping to near 20% by the time of fireworks Sunday evening. There is fairly high confidence that the overall coverage of rain activity will be much less on Sunday afternoon and evening.

Be careful this holiday weekend, the wet conditions will make driving hazardous and rivers/creeks will be flowing quickly.

Paul Yura
National Weather Service Austin San Antonio TX
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