SPC MD 2348

[NorthGeorgiaWX]

MD 2348 CONCERNING HEAVY SNOW FOR WESTERN SOUTH DAKOTA...EASTERN WYOMING...NORTHEAST COLORADO...WESTERN NEBRASKA PANHANDLE...NORTHWEST KANSAS

Mesoscale Discussion 2348
NWS Storm Prediction Center Norman OK
0433 AM CST Tue Dec 26 2023

Areas affected...Western South Dakota...eastern Wyoming...northeast
Colorado...western Nebraska Panhandle...northwest Kansas

Concerning...Heavy snow 

Valid 261033Z - 261600Z

SUMMARY...Heavy snow, with rates in excess of one inch/hour, will
continue across much of the discussion area through mid morning.  In
addition, strong surface winds with frequent gusts between 40 and 50
kts, will result in blizzard conditions in some areas.

DISCUSSION...Regional radar composite imagery depicts a rather large
area of moderate to heavy snow extending from western SD southward
over eastern WY/western NE Panhandle and into parts of northeast
CO/northwest KS at 1025z. This precipitation is associated with a
pronounced zone of 850 mb warm air advection, on the western
periphery of a pronounced dry slot associated with the occluded
cyclone over the central Plains.  An impressive flow of moisture
with the warm conveyor belt will continue to feed into the western
portion of the cyclone (across the discussion area), and combine
with lobes of vorticity rotating around the upper low to produce
lift for areas of moderate/heavy snow to continue through at least
mid morning. Snowfall rates of one inch/hour will remain possible.

Although the surface low should continue to weaken with time, the
surface pressure gradient across this area will support frequent
wind gusts of 40 to 50 kts through mid morning, resulting in areas
of near-blizzard/blizzard conditions.

..Bunting.. 12/26/2023

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

ATTN...WFO...LBF...UNR...GLD...BOU...CYS...

LAT...LON   41990548 44920408 45230354 45280185 44780133 43660140
            41790333 40680317 40070220 39620153 39360107 38760105
            38590165 38910269 39510392 40010452 41310560 41990548 

Read more

View the full article