Subj : MESO: Mesoscale Discussion 0082
To   : wx-storm@lists.illinois.edu
From : COD Weather Processor
Date : Sat Jan 21 2023 03:50:10

ACUS11 KWNS 210350
SWOMCD
SPC MCD 210349=20
KSZ000-COZ000-NMZ000-210745-

Mesoscale Discussion 0082
NWS Storm Prediction Center Norman OK
0949 PM CST Fri Jan 20 2023

Areas affected...East/southeast Colorado to western Kansas

Concerning...Heavy snow=20

Valid 210349Z - 210745Z

SUMMARY...Organized snow banding is becoming apparent across parts
of east/southeast Colorado and will likely persist well into the
overnight hours into western Kansas. Periods of heavy snowfall
appears likely under the band with snowfall rates near 1 inch/hour
likely.

DISCUSSION...An organized snow band is becoming apparent in regional
radar mosaics from the Pueblo, CO area to the I-70 corridor in
eastern CO. Locations that have seen full low-level moistening have
begun to periodically report moderate to heavy snow with reduced
visibility down to 0.5 mile at times. These trends are supported by
regional web cams that also show reduced visibility due to heavy
snowfall under the developing snow band. This organized band is
largely being driven by a combination of deformation near 700 mb and
strong isentropic ascent and frontogenesis at 850 mb over southeast
CO. These sources of focused mesoscale ascent are expected to
persist well into the overnight hours and translate east in tandem
with the associated upper low (currently over north-central NM).
Consequently, the potential for organized snow banding will
continue.=20

Forecast soundings suggest much of the ascent will remain just under
a 50-100 mb thick dendritic growth zone near 600 mb, which may limit
the potential for persistent heavy snow rates to some degree.
However, snowfall rates within any organized bands may be bolstered
by convective elements given weak (25-75 J/kg) MUCAPE rooted in the
550-600 mb layer. This will likely result in periods of heavy
snowfall rates near 1 inch/hour.

...Moore.. 01/21/2023

....Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj=
g!5dToGWJGu3JX9m5CCXaK5bTMd2hjRYYjTOcnTKVFbotZ2H5yfcjB8vmsBzSojOlt9KSOHi2sA=
xPJrZdNVp9giGhaeQE$  for graphic product...

ATTN...WFO...DDC...GLD...PUB...BOU...ABQ...

LAT...LON   37210445 37710458 38520447 39090341 39480241 39380120
            38870050 38470027 38020045 37690181 37080299 36980342
            37030407 37210445=20


=3D =3D =3D
To unsubscribe from WX-STORM and you already have a login, go to
https://lists.illinois.edu and use the "Unsubscribe" link.  Otherwise email
Chris Novy at cnovy@cox.net and ask to be removed from WX-STORM.

--- SBBSecho 3.14-Linux
 * Origin: capitolcityonline.net * Telnet/SSH:2022/HTTP (1:2320/105)

.