Subj : MESO: Mesoscale Discussion 0766
To   : wx-storm@lists.illinois.edu
From : COD Weather Processor
Date : Thu May 11 2023 20:50:05

ACUS11 KWNS 112049
SWOMCD
SPC MCD 112049=20
KSZ000-NEZ000-COZ000-112215-

Mesoscale Discussion 0766
NWS Storm Prediction Center Norman OK
0349 PM CDT Thu May 11 2023

Areas affected...western Kansas into western Nebraska

Concerning...Tornado Watch 211...

Valid 112049Z - 112215Z

The severe weather threat for Tornado Watch 211 continues.

SUMMARY...The severe risk persists over western Kansas, and may
increase into western Nebraska with time. An additional watch could
eventually be needed north of the existing watch 211, depending on
storm trends.

DISCUSSION...Bands of thunderstorms persist north of the surface low
and ahead of midlevel cooling with the upper trough. Strong boundary
layer easterlies continue to push moisture westward across northwest
KS and into western NE toward an inverted surface trough. The
easterly winds are also helping warm advection in general, as
heating continues upstream from northern KS into central NE.
Low-level shear is sufficient for a weak/brief tornado threat with
0-1 values around 100 m2/s2. As such, given the time of day, an
additional watch could be needed into more of NE and perhaps
north-central KS as the storms develop in that direction. In
addition, a plume of steep lapse rates pushing into southwest KS
ahead of the vort max could lead to locally severe gusts with
activity developing over southeast CO currently.

...Jewell.. 05/11/2023

....Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj=
g!9uDc2LaFDt5KKmBoAPvOk1G0JDb7K0H-k9qaAC5PHCPasJyAUDZmpebyKiAGr9k5ciqY8vaBU=
F-Qx7oOqt9DaYLEbHM$  for graphic product...

ATTN...WFO...ICT...GID...LBF...DDC...GLD...BOU...

LAT...LON   37489984 38120045 38940113 39630181 40110207 40640240
            42030260 42630260 42720222 42540198 41680123 41080073
            40340003 39099920 38369891 37559923 37489984=20


=3D =3D =3D
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