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Area forecast discussion 
National Weather Service Fort Worth Texas
354 am CDT Wednesday may 27 2015

similar to Monday evening and yesterday morning...we continue to
monitor a linear mesoscale convective system exiting the region. This mesoscale convective system has been weaker
and slower as it has become cold pool driven across our central
Texas counties and will still have hydrological impacts through
sunrise across that area. We should see enough inhibition from
subsidence behind this mesoscale feature for mainly isolated
activity later this morning...though will hold higher chances
across our far southern counties for mesoscale convective system mesoscale remnants moving
east/southeast across those areas.

More shortwave energy currently over the southern High Plains
will ripple across the area this coming afternoon and evening once
again. As the environment recovers with daytime heating and
redestabilizes this afternoon...we expect more scattered storms
with localized heavy rainfall to develop. Despite this...we do not
feel any heavy rain will be widespread and will forego any Flash
Flood Watch issuance at this time after coordination with
surrounding offices. We/ll advertise our best chances across the
NE half of the County Warning Area today as it appears an outflow boundary will
surge out of Oklahoma during the afternoon hours. High resolution
short term models are even struggling in this moist and
progressive regime and confidence is not very high on coverage and
timing. appears much of the area will be under a
slight risk for severe storms once again this afternoon and
evening with large hail...damaging winds...and locally heavy
rain/flooding being the main threats. However...a brief tornado or
two cannot be discounted through this evening with subtle outflow
boundaries around today.

Thursday morning should be similar to this morning with a
reprieve in convective activity. The reprieve will be short-lived
however... with another substantial shortwave disturbance arriving
Thursday afternoon and night with another potential mesoscale convective system late
Thursday night into Friday morning. Later Friday...Friday night
and into Saturday appears a similar scenario unfolds
with more widespread heavy rains occurring especially during the
nocturnal hours with any mesoscale convective system/S that move through. This will likely
be the time frame for a future Flash Flood Watch issuance with
greater areal coverage of heavier rains. Confidence regarding
severe weather remains low during this period and will be refined
in future forecasts and discussions.

The main longwave trough appears to finally lift east across the
plains this coming weekend and will help to usher in a weak late
season cold front into the area. Scattered rain chances will
continue even behind the front with moisture lingering over the
area...but should wane from north to south on Sunday/Sunday night
with an upper ridge to the west expanding eastward toward the area
per the Canadian and European models. However...the GFS still
wants to linger a weak...cut off upper low over the arklatex to
our east. Will follow the former models on the forecast for now
but if the GFS pans out...low rain chances may linger across the
eastern County Warning Area into early next week. Either way...think many of US
are looking forward to this longwave pattern shift and an
opportunity for the entire area to dry out somewhat as we move
into early June.



/issued 1203 am CDT Wednesday may 27 2015/
although thunderstorms have moved to the south of Dallas and
Tarrant counties...some lightning will affect the metroplex taf
sites through 09z. MVFR ceilings may be slow to come back in due
to the convection to the south...but have brought MVFR ceilings in
at 09z along with some light fog. Expect ceilings to improve to
VFR by early afternoon /19z/. Scattered thunderstorms are a
possibility across all of north and central Texas Wednesday
afternoon...thus have thunderstorms in the vicinity in the tafs through the afternoon. MVFR
ceilings will spread across the region toward 06z Thursday.



Preliminary point temps/pops...
Dallas-ft. Worth, Texas 86 70 84 71 82 / 50 40 40 50 50
Waco, Texas 87 72 84 72 83 / 30 40 40 30 40
Paris, Texas 81 69 83 70 80 / 50 30 40 40 50
Denton, Texas 85 70 83 70 81 / 50 30 40 50 50
McKinney, Texas 84 70 84 70 81 / 50 30 40 50 50
Dallas, Texas 87 72 84 72 82 / 50 40 40 40 50
Terrell, Texas 86 71 85 72 82 / 50 40 40 40 40
Corsicana, Texas 85 71 84 72 82 / 40 40 40 30 40
Temple, Texas 87 72 84 72 83 / 40 30 40 30 40
Mineral Wells, Texas 86 70 82 68 82 / 30 40 40 50 40


Forward watches/warnings/advisories...




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