A Flash Flood Watch is in effect

HOUSTON June 19, 2018 ⎯ A Flash Flood Watch is in effect for parts of the region through 7 PM CDT today. Not everyone in the watch area will experience heavy rain, but those that do may also be at risk for flash flooding.

After the region had a few rounds of shower activity overnight, we are experiencing a break this morning. Areas to both our east and west however continue to experience periods of heavy rainfall and the potential for this rainfall to occur across Southeast Texas will exist today. We're continuing to monitor the tropical system that we've been talking about over the past few days, which is located near Corpus Christi this morning. Rain bands rotating around this system are expected to bring periods of heavy rain to portions of the Texas coast today and it will be within these bands that higher rain totals... and a potential for flash flooding... exist. Widespread flash flooding is not expected, but for areas that experience one (or more) of these bands flash flooding will be possible.

Confidence in the timing and development of any rain band today is very low and forecast rain amounts across the Flash Flood Watch area are only in the 1-3 inch range. These amounts alone are not expected to produce flash flooding. It will be the higher amounts of 4-6 inches that materialize within the rain bands that produce the flooding concerns.

Coastal and Marine
Long-period swell will result in waves in the 6-8 feet range offshore today. It will also produce a high rip current risk along Gulf-facing beaches and produce tide levels peaking around 3.0 feet above MLLW at times of high tide. This may result in localized wave run-up or minor tidal overwash on Bolivar Peninsula.
Urban Flash Flood Messaging
Heavy rainfall is forecast for portions of Southeast Texas, including highly urbanized areas like the Houston metropolitan area. Based on forecast conditions, NWS Houston will be utilizing the following urban flash flood messaging for this event:
- Turn Around, Don't Drown. Isolated underpasses or low-water crossings may be life-threatening.
- Pay attention to the weather. Monitor HCFCD, TranStar, and NWS for current conditions.


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