SPC MD 1039



MD 1039 CONCERNING SEVERE THUNDERSTORM WATCH 347… FOR SOUTH-CENTRAL OKLAHOMA/NORTH-CENTRAL TEXAS

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Mesoscale Discussion 1039
NWS Storm Prediction Center Norman OK
1034 AM CDT Sun Jun 09 2019

Areas affected...South-central Oklahoma/north-central Texas

Concerning...Severe Thunderstorm Watch 347...

Valid 091534Z - 091700Z

The severe weather threat for Severe Thunderstorm Watch 347
continues.

SUMMARY...Within Severe Thunderstorm Watch 347, a cluster of
south/southeastward-moving thunderstorms will continue to pose a
damaging wind/some hail risk across south-central OK. Trends are
being closely monitored for the possibility of an additional Watch
across North TX, which could be needed within the hour (before 1130
AM CDT).

DISCUSSION...A south/southeastward-moving cluster (around 35 kt
forward motion) with history of wind damage/periodic severe hail
continues along the I-35 corridor of south-central OK, with the
leading edge nearing the Wyneewood/Davis/Sulphur areas as of 1025 AM
CDT. The linear cluster remains relatively well-organized with a
tight leading-edge reflectivity gradient and signs of moderately
strong rear inflow and a deep cold pool, with 30+ kt winds within
the lowest 2-3km AGL observed in recent KTLX WSR-88D VWP data.
Mid-level temperatures warm and background environmental winds, if
anything, tend to weaken with southward extent. That said, a readily
evident cold pool (accompanied by strong pressure rises) appears to
be relatively well balanced with moist/moderately strong southerly
storm-relative inflow, which may help to maintain severe-caliber
storms with a damaging wind threat into parts of North TX. This is
all while lapse rates will continue to steepen as low-level
inhibition gradually erodes as temperatures warm through the
middle/upper 80s F as of 15Z.

..Guyer.. 06/09/2019

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

ATTN...WFO...SHV...TSA...FWD...OUN...

LAT...LON   32589705 32719853 33539826 34499853 34899823 34659757
            34859648 34219582 32999531 32589705 

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