ZCZC SPCSWOMCD ALL
ACUS11 KWNS 272032 
SPC MCD 272032 
NEZ000-KSZ000-COZ000-272230-

Mesoscale Discussion 0437
NWS Storm Prediction Center Norman OK
0332 PM CDT Tue Apr 27 2021

Areas affected...Portions of northeast Colorado

Concerning...Severe Thunderstorm Watch 112...

Valid 272032Z - 272230Z

The severe weather threat for Severe Thunderstorm Watch 112
continues.

SUMMARY...The threat for severe hail and perhaps a damaging gust or
two continues across Severe Thunderstorm Watch #0112, and is
expected to persist through the remainder of the afternoon.

DISCUSSION...Multiple multicellular-clusters are in progress across
the western half of Severe Thunderstorm Watch #0112. While MRMS
mosaic radar data has shown storms potentially producing 1+ inch
diameter hail over the past couple of hours, individual
cells/clusters have demonstrated pulse-like behavior, with
relatively short life spans. Nonetheless, storms are developing in
an ambient environment characterized by 8+ C/km mid-level lapse
rates and over 50 kts of effective bulk shear (per latest
Mesoanalyis). The severe hail threat is expected to persist with the
more intense longer-lived storms, and a damaging gust or two cannot
be ruled out. Convective coverage may also increase somewhat as
convective outflows locally enhance low-level convergence in spots.

..Squitieri/Hart.. 04/27/2021

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

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

LAT...LON   38990402 39350448 39930457 40580444 40870426 41000366
            41020269 40930232 40510206 40010203 39630209 39350218
            39080245 38930306 38960349 38990402 

NNNN