SPC MD 1032

MD 1032 CONCERNING SEVERE THUNDERSTORM WATCH 344... FOR NORTHEAST COLORADO

Mesoscale Discussion 1032
NWS Storm Prediction Center Norman OK
0719 PM CDT Sat Jun 08 2019

Areas affected...northeast Colorado

Concerning...Severe Thunderstorm Watch 344...

Valid 090019Z - 090145Z

The severe weather threat for Severe Thunderstorm Watch 344
continues.

SUMMARY...Severe thunderstorms capable of large hail and strong,
gusty winds will continue for the next several hours. A tornado or
two cannot be ruled out.

DISCUSSION...A trio of supercell thunderstorms continue southeast of
the Denver metro. Recent mPing reports suggest these supercells are
capable of producing between 1.5-2" diameter hail, with the latter
being reported earlier in Castle Rock. The large-scale environment
remains supportive of supercells with mixed-layer CAPE in excess of
1000 J/kg and deep-layer shear greater than 60 knots as sampled by
00Z Denver sounding. 

As these thunderstorms continue east-southeast, the potential for a
tornado or two should increase as greater low-level moisture
contributes to lower LCLs and vigorous updrafts interact with the
low-level vorticity associated with the Denver Cyclone. 

Lastly, additional thunderstorms are developing along the higher
terrain of Boulder County. Although the low-level thermal
environment is cooler north of the aforementioned supercells
southeast of Denver, the overall large-scale environment remains
supportive of supercell-like characteristics and large hail
potential.

..Marsh.. 06/09/2019

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

ATTN...WFO...GLD...PUB...BOU...CYS...

LAT...LON   39140530 39580504 40350502 40370491 41000491 40990354
            40580358 40440345 40440274 39550280 39540314 38540316
            38520406 39120408 39140530 

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