ACUS11 KWNS 210136
SWOMCD
SPC MCD 210135=20
MNZ000-SDZ000-NDZ000-210300-
Mesoscale Discussion 1242
NWS Storm Prediction Center Norman OK
0835 PM CDT Mon Jun 20 2022
Areas affected...parts of northeastern South Dakota
Concerning...Severe Thunderstorm Watch 395...
Valid 210135Z - 210300Z
The severe weather threat for Severe Thunderstorm Watch 395
continues.
SUMMARY...A swath of strong to locally severe wind gusts likely will
persist with a small cluster of storms overspreading northeastern
South Dakota, including the Aberdeen vicinity by 10-11 PM CDT. It
is possible, but not yet certain, that a new severe weather watch
may be needed east-northeast of WW 395.
DISCUSSION...A compact, but organized cluster of storms with an MCV
and narrow, strong rear inflow jet (which recently produced a gust
to 69 kt at Pierre) has accelerated east-northeast of Pierre at up
to 50 kt. Activity has been supported by strengthening
east-northeasterly inflow of moist air within a narrow post-cold
frontal corridor. With the onset of boundary-layer cooling CAPE has
diminished some, but remains moderately large and the convective
system still seems likely to maintain considerable strength at least
another few hours. The associated swath of strong to severe surface
gusts probably will overspread areas near/southwest through south of
Aberdeen by 03Z, before approaching the Minnesota/North and South
Dakota state border vicinity by 04Z.
..Kerr.. 06/21/2022
...Please see
https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!-fTg_lhfMXYnHYQ37v-EStAkl1JKrFz7ApcO-Rf5U9XSPiNmseG9WoLd_dyyJl8ayU87nnM-5= xFCoOYEwULTXZv3w5U$ for graphic product...
ATTN...WFO...FGF...FSD...ABR...
LAT...LON 45049774 44559880 44879889 44999924 45479859 45989681
45439676 45049774=20
=3D =3D =3D
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