Hydrometeorological Discussion
Issued by NWS West Gulf RFC

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AGUS74 KFWR 211624
HMDFWR
HYDROMETEOROLOGICAL DISCUSSION
NATIONAL WEATHER SERVICE...WEST GULF RFC...FORT WORTH TX
1024 AM CST TUE NOV 21 2017

                VALID NOVEMBER 21 THROUGH NOVEMBER 26

...NO SIGNIFICANT RAINFALL IS EXPECTED THIS WEEK OVER THE WGRFC AREA
OF RESPONSIBILITY...

                   ...METEOROLOGICAL DISCUSSION...

Scattered showers and thunderstorms will continue across portions
of Deep South Texas and the southeast Texas coast the next 24 hours.
Rainfall amounts should remain less than 0.10 inch per hour,
therefore no signficant river issues are expected.

A ridge of high pressure is expected to build over the western
states today, which will place the WGRFC area in a northwesterly
upper air flow pattern the remainder of this week. Within this flow
there will be a couple upper air disturbances rippling southeastward
across or near Texas. The next upper air disturbance is forecast to
ripple across the lone star state later Tuesday into Tuesday night
and should exit the region tomorrow morning.  Light rain will
continue over southeast and deep south Texas into southern
Louisiana, but no significant rainfall is forecast over the WGRFC
area of responsibility. The only significant rainfall is forecast to
fall over the Gulf of Mexico. Yet another upper air disturbance may
graze northeast Texas and northern Louisiana by Saturday morning,
but no rainfall is expected with its passage.  In general, cool, dry
conditions are expected beyond tomorrow morning over the WGRFC area.

                    ...PRECIPITATION FORECAST...
For Today into Wednesday morning, Mean Areal Precipitation (MAP)
amounts of 0.25 to 0.50 inch are forecast for portions of Deep South
Texas and the southeast Texas coast.

For Wednesday into Thursday morning, no significant MAP amounts are
forecast for the WGRFC area.

For Thursday into Friday morning, no significant MAP amounts are
forecast for the WGRFC area.

For Friday into Sunday morning, no significant MAP amounts are
forecast for the WGRFC area.

The latest U.S. Drought Monitor for Texas shows the area considered
to be abnormally dry is around 46% with around 15% of the state
experiencing moderate drought.  In New Mexico, 21% of the state is
having abnormally dry conditions, with 4% in moderate drought
conditions (over the far western portions). With the continued dry
weather pattern the WGRFC area is experiencing, the areas of drought
will likely increase the rest of this month.  Due to the drying
soils and the lack of forecast significant rainfall, runoff is not
expected over the next 5 days.

                     ...HYDROLOGIC DISCUSSION...
...WGRFC Basins...
All rivers across the WGRFC area are below criteria levels and are
expected to remain below criteria levels for the next 5 days.


              ...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:
http://water.weather.gov/ahps/

The Flood Potential Outlook can be viewed on our webpage at:
http://www.weather.gov/wgrfc/wgrfcfop

The West Gulf River Forecast Center is now on Facebook:
http://www.facebook.com/NWSWestGulf

National Precipitation Analysis:
http://water.weather.gov/precip/

The forecast rainfall amounts (QPF) can be viewed on our webpage at:
http://www.weather.gov/wgrfc/wgrfcqpfpage

The US Drought Assessment:
http://www.cpc.ncep.noaa.gov/products/Drought

The latest on Reservoir Information for Texas:
http://www.waterdatafortexas.org/reservoirs/statewide

MCCANTS


$$





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