Subj : MESO: Mesoscale Discussion 2073
To   : wx-storm@lists.illinois.edu
From : COD Weather Processor
Date : Thu Dec 29 2022 03:45:00

ACUS11 KWNS 290344
SWOMCD
SPC MCD 290344=20
COZ000-290645-

Mesoscale Discussion 2073
NWS Storm Prediction Center Norman OK
0944 PM CST Wed Dec 28 2022

Areas affected...North-central to east-central CO

Concerning...Heavy snow=20

Valid 290344Z - 290645Z

SUMMARY...A swath of heavy snow with rates around 2 inches per hour
will continue to move east from the I-25 to the I-70 corridor in
east-central CO before diminishing overnight.

DISCUSSION...Traffic cams, storm reports, and surface observations
confirm the presence of a heavy snow band along the foothills to the
I-25 corridor in the greater Denver-Boulder metro area. Here,
surface temperatures have been able to cool to 32-33 F, maximizing
snow rate efficiency as nearly the entire column has gone below
freezing within a persistent low-level upslope flow regime. This
period of heavy snow will likely continue for a couple more hours
before shrinking in areal extent (and overall intensity) after 06Z
as low-level winds shift to the northwest in the wake of shortwave
trough passage.

...Grams.. 12/29/2022

....Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj=
g!9rIsExbwYzYdKu55nJXEwECBRdzo_D-Ef-J6hGhb4VemM_6fyV1qCf1YYvLdt32ZL3mwUyxxh=
_96FcNCpD0_b1X4AdI$  for graphic product...

ATTN...WFO...PUB...BOU...

LAT...LON   39720560 40210562 40540542 40520473 39820385 39420355
            39220350 38980379 38740446 39030485 39290526 39480553
            39720560=20


=3D =3D =3D
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