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Hydro-Meteorological Discussion

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318 AGUS74 KFWR 291647 HMDFWR HYDROMETEOROLOGICAL DISCUSSION NATIONAL WEATHER SERVICE...WEST GULF RFC...FORT WORTH TX 1147 AM CDT FRI AUG 29 2014 VALID AUGUST 29 THROUGH SEPTEMBER 3 ...BENEFICIAL RAINFALL TO CONTINUE FOR SOUTH AND EAST TEXAS... ...METEOROLOGICAL DISCUSSION... Two separate systems brought much needed to two different areas of Texas which needed the precipitation. The upper level trough pushing in from the northwest has a cold front in Oklahoma and the panhandle which fired off storms last night. The gust front associated with these storms pushed in forcing storms overnight from north central Texas and continue to push through into eastern Texas. This gust front caused storms that produced as much as 3 inches of rainfall for some areas with widespread rainfall from a quarter to a half an inch. This front should continue to push eastward slowly losing momentum as storm strength dissipates weakening the gust front. Expect more storms to develop off this towards the south with the more abundant moisture, while light rain may continue in the north east Texas area. The front itself is still pushing in from western Texas as the upper level trough pushes north east and into a more zonal westerly pattern. This front may generate some additional storms and rainfall for north central Texas and could continue and push towards the metroplex and Waco area depending on moisture availability and if the sun can peek out to generate some heating. So expect scattered showers for north central Texas through out the day with no flooding expected from this system. By tomorrow this disturbance should push out of the area and zonal flow aloft should bring in dry air aloft and limit the precipitation potential. The other disturbance causing significant rainfall in south Texas is the weak tropical system that has been floating around Brownsville. This system should progressively work its way inland slowly throughout the day, but the precipitation will persist through today and into tomorrow. This system has already generated areas with 5 to 6 inches of rainfall near the coast with more rainfall threatening off shore. The onshore flow is developing both isolated and widespread rainfall patterns which will raise rainfall values along most of the coast for the next 24 hours. While river flooding is not a concern as of yet, urban areas, small streams, and flood" onClick="return popup(this, 'notes')">flash flooding may be an issue from Houston to Corpus Christi. The more extended outlook does see a dry zonal flow Monday into Wednesday. There is a possibility of another Tropical Wave reaching the Bay of Campeche which could bring even more rainfall to south Texas into next week. ...PRECIPITATION FORECAST... For Today into Saturday morning, Mean Areal Precipitation (MAP) amounts of 1 inch are forecasted for areas around the coast. 0.5 inches are forecasted for all parts along the coast as well as along the front south of the metroplex. For Saturday into Sunday morning, MAP amounts of 1 inch are forecasted by WPC for eastern Texas Gulf coast with 0.5 inches possible for the entire Gulf coast and eastern Texas. For Sunday into Monday morning, no significant MAP amounts are forecast for the WGRFC area. For Monday into Wednesday morning, MAP amounts of 0.5 inches are forecasted for deep south Texas. Drought persists over Texas and New Mexico. Statewide, New Mexico has no areas of exceptional drought while less than 3% of Texas remains in exceptional drought. Severe drought conditions are impacting 40% of New Mexico and 34% of Texas. The monsoonal rains in New Mexico continue to ease the drought conditions in many areas of the state. Some runoff can be expected along the immediate Texas Gulf coast the next 5 days, but minor or no runoff is anticipated elsewhere. ...HYDROLOGIC DISCUSSION... ...WGRFC Basins... River conditions across the WGRFC area remain near or below seasonal flows. Storm activity along the Texas coast is expected to remain along the coastal basins. Some beneficial rainfall is also occurring across north and east Texas today. However, no significant flooding is forecast to occur through the forecast period. ...SUPPLEMENTARY GRAPHICAL INFORMATION... The following URLs (all lower case) provide additional graphical information on current and forecast hydrologic conditions, past and future precipitation, and drought and climate forecasts. This information is provided by a variety of National Weather Service, NOAA, and private sector entities. For specific information on river conditions, refer to the AHPS pages from the local NWS offices at: The Flood Potential Outlook can be viewed on our webpage at: The West Gulf River Forecast Center is now on Facebook: National Precipitation Analysis: The forecast rainfall amounts (QPF) can be viewed on our webpage at: The US Drought Assessment: The latest on Reservoir Information for Texas: GIARDINO $$ is the U.S. government's official web portal to all federal, state and local government web resources and services.