Hydrometeorological Discussion
Issued by NWS West Gulf RFC

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AGUS74 KFWR 211721
HMDFWR
HYDROMETEOROLOGICAL DISCUSSION
NATIONAL WEATHER SERVICE...WEST GULF RFC...FORT WORTH TX
1120 AM CST SUN DEC 21 2014

                VALID DECEMBER 21 THROUGH DECEMBER 26

...PRECIPITATION POSSIBLE EARLY TO MIDWEEK ACROSS THE WGRFC AREA...

                   ...METEOROLOGICAL DISCUSSION...
An upper level trough is currently deepening across Texas this
morning.  A second trough is forecast to begin building on the back
side of the current trough over New Mexico late Monday.  This system
is expected to deepen further as it moves eastward across Texas
Tuesday into Wednesday.  With this system, light rainfall with
snowfall at higher elevations are possible across the WGRFC area.  By
Thursday, this upper level system is expected to move east of the
WGRFC area bringing a drier weather pattern to the region.

                    ...PRECIPITATION FORECAST...
For Today into Monday morning, Mean Areal Precipitation (MAP)
amounts of 0.25 to 0.50 inches are forecast in southern Colorado over
the upper Rio Grande River Basin.

For Monday into Tuesday morning, MAP amounts of 0.25 to 0.50 inches
are forecast over northern New Mexico and southern Colorado.

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

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

Moderate or worse drought conditions continue to be observed over
parts of New Mexico and Texas.  In Texas, about half the state is
experiencing moderate or worse drought (44%) and 10% has extreme to
exceptional drought conditions. In New Mexico, nearly two thirds of
the state is experiencing moderate or worse drought (65%) and 4% has
extreme to exceptional drought conditions. Soils are generally dry
enough such that forecast rainfall will generate mostly minor runoff.

                     ...HYDROLOGIC DISCUSSION...
...Neches Basin...
...Higher Flow Non-Flood Forecasts...
Pine Island Bayou and other coastal tributaries remain active as they
recover from rains last week. No flooding is expected at this time, but
recovery to baseflow will take some time since these
streams tend to linger at higher levels after rain events.

...Remainder of WGRFC Basins...
With several days before the next storm system moves into the region,
there should be enough time for the smaller river systems that saw
small rises to recover back to base flow before more rainfall arrives.
No flooding is expected 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:
http://water.weather.gov/ahps/

The Flood Potential Outlook can be viewed on our webpage at:
http://www.srh.noaa.gov/wgrfc/?n=wgrfcfop

The West Gulf River Forecast Center is now on Facebook:
http://www.facebook.com/US.NationalWeatherService.WGRFC.gov

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

The forecast rainfall amounts (QPF) can be viewed on our webpage at:
http://www.srh.noaa.gov/wgrfc/?n=wgrfcqpfpage

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

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

SHULTZ


$$





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