Area Forecast Discussion
Issued by NWS Midland/Odessa, TX

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FXUS64 KMAF 201926

225 PM CDT Wed Aug 20 2014


Currently, there is an upper low over the southern coast of
California with an upper ridge over the Gulf coast states.  This is
resulting in southwest flow over far West Texas and southeast New
Mexico which is bringing in mid-level subtropical moisture.  The
increase in moisture along with an increase in omega values along
and south of the Davis Mountains is contributing to showers and
thunderstorms across mainly the western half of the CWA this
afternoon.  Isolated thunderstorms will also be possible today
across parts of the Permian Basin with CAPE values around or above
1,000 J/kg.  Bulk shear values will be low across the whole area so
not expecting widespread severe development.  Upper level winds are
weak so storms will not likely have much movement which may result
in locally heavy rain and flash flooding.  Will not issue a Flash
Flood Watch at this time due to QPF amounts not being high enough to
warrant one but will continue to mention flooding threat in HWO.
The PWAT value on the 12z MAF sounding was 1.39 which would support
heavy rain.  High temperatures today will be near normal and similar
to yesterday.

After today, the upper low over California will move eastward as an
upper trough moves over the Pacific Northwest.  The upper ridge over
the southern states will begin to build which will keep the area on
the western edge of the ridge.  This will allow for moisture to keep
streaming into western portions of the CWA and for shortwaves to
move over the region.  This will result in a chance for convection
across the higher terrain and western portions of the CWA through
the forecast period.  High temperatures and the eastern extent of
the precipitation will depend on the strength and placement of the
upper ridge.  During the early to middle part of next week, an upper
trough will move over the Northern Plains which which will cause the
upper ridge to shift eastward and weaken over the CWA.  Temperatures
will not change too much through the forecast period and should
remain near normal despite the presence of a surface trough across
eastern New Mexico and West Texas.


ANDREWS TX                 72  95  72  93  /  20  10  10  20
BIG SPRING TX              74  95  73  94  /  10  10  10  10
CARLSBAD NM                70  94  71  92  /  20  20  20  30
DRYDEN TX                  75  97  73  95  /  20  10  10  10
FORT STOCKTON TX           73  95  72  94  /  20  20  10  20
GUADALUPE PASS TX          65  87  64  84  /  20  30  30  40
HOBBS NM                   68  93  68  90  /  20  20  20  20
MARFA TX                   62  87  63  85  /  50  40  40  40
MIDLAND INTL AIRPORT TX    73  94  73  93  /  10  10  10  10
ODESSA TX                  73  94  74  93  /  20  10  10  10
WINK TX                    76  97  75  97  /  20  20  20  20






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