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SPC MD 1138

SPC MD 1138

[html]MD 1138 CONCERNING SEVERE THUNDERSTORM WATCH 353... FOR PARTS OF SOUTH-CENTRAL SOUTH DAKOTA
       
MD 1138 Image


Mesoscale Discussion 1138
NWS Storm Prediction Center Norman OK
0946 PM CDT Sun Jun 12 2022

Areas affected...Parts of south-central South Dakota

Concerning...Severe Thunderstorm Watch 353...

Valid 130246Z - 130415Z

The severe weather threat for Severe Thunderstorm Watch 353
continues.

SUMMARY...Severe gusts and large hail are the primary concerns
across parts of south-central SD, though a tornado cannot be ruled
out.

DISCUSSION...A developing MCS continues tracking east-southeastward
across parts of south-central South Dakota -- along the northern
periphery of moderate/strong instability. Regional VWP data shows
45-55 kt of westerly 0-6 km bulk shear, which is forcing
deeper/sustained updrafts along the eastern periphery of the cold
pool. Here, embedded supercell structures are also evident -- aided
by strengthening warm advection and related veering in the lowest 3
km. While the primary concern continues to be damaging gusts and
isolated large hail, a tornado or two remains possible along the
eastern and southeastern periphery of the larger cold pool.

..Weinman.. 06/13/2022

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

ATTN...WFO...ABR...UNR...

LAT...LON   44110166 44270145 44520123 44620105 44630057 44519989
            44229970 43509969 43050017 43020103 43080156 43630212
            43960216 44110166


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Source: SPC MD 1138 (http://ht**://www.spc.noaa.gov/products/md/md1138.html)