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ACUS11 KWNS 232152
SWOMCD
SPC MCD 232152
TXZ000-232345-
Mesoscale Discussion 0425
NWS Storm Prediction Center Norman OK
0452 PM CDT Tue Apr 23 2019
Areas affected...Far West Texas
Concerning...Severe potential...Watch possible
Valid 232152Z - 232345Z
Probability of Watch Issuance...60 percent
SUMMARY...Storm intensity in far West Texas may increase in the next
few hours, watch issuance/extension possible.
DISCUSSION...Regional radar shows a marginally severe storm entering
far West Texas. This convection is expected to remain somewhat
disorganized in the short term, as it currently resides within a
weakly buoyant (MLCAPE < 1000 J/kg) and weakly sheared sheared
(Effective Bulk Shear < 30 kt) environment. The latest surface
analysis shows richer boundary-layer moisture to the east, with dew
point temperatures of 50+ F near Pecos, TX, and 60+ F near
Sanderson, TX. Consequently, MLCAPE values range from 1000-1500 J/kg
downstream of the current convection to go along with effective bulk
shear of 50+ kt. The latest high resolution model guidance suggests
an increase in easterly upslope flow, which would help to increase
access to richer buoyancy to any storms propagating across this
region. Should this occur, the environment will be more conducive to
sustain severe intensity. Thus, a watch or a watch extension may be
needed.
..Karstens/Grams.. 04/23/2019
...Please see www.spc.noaa.gov for graphic product...
ATTN...WFO...MAF...EPZ...
LAT...LON 29770264 29870436 30590505 31270598 31800596 31930411
31740270 29770264
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