ZCZC SPCSWOMCD ALL
ACUS11 KWNS 182337 
SPC MCD 182337 
TXZ000-190030-

Mesoscale Discussion 0676
NWS Storm Prediction Center Norman OK
0637 PM CDT Sat May 18 2019

Areas affected...portions of north Texas

Concerning...Severe potential...Watch unlikely 

Valid 182337Z - 190030Z

Probability of Watch Issuance...20 percent

SUMMARY...A storm or two may pose a brief threat for large hail this
evening across the MCD area.

DISCUSSION...An isolated thunderstorm has developed in Palo Pinto
County TX this evening amidst strong low level convergence along the
dryline. Earlier convection has generally resulted in surface
inhibition, though latest surface observations have shows some
recovery across a small area from near MWL toward Collin, Dallas and
Ellis counties. Temperatures have rebounded from the mid 60s into
the low and mid 70s and dewpoints were in the upper 60s to near 70
as of 23z. As a result, a narrow corridor strong instability atop a
weakly capped boundary layer exists just downstream from the surface
dryline. While convection is not expected to be widespread, a couple
of storms could pose a threat for large hail in the short-term
across the MCD area. At this time, a watch is not expected, but
trends will be monitored closely.

..Leitman/Guyer.. 05/18/2019

...Please see www.spc.noaa.gov for graphic product...

ATTN...WFO...FWD...

LAT...LON   33549770 33659750 33659724 33609695 33379678 33029672
            32709673 32599686 32479707 32439752 32489790 32639816
            32809820 33119802 33429784 33549770 

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