ACUS11 KWNS 220346
SWOMCD
SPC MCD 220346=20
WIZ000-MNZ000-220645-

Mesoscale Discussion 0278
NWS Storm Prediction Center Norman OK
1046 PM CDT Thu Mar 21 2024

Areas affected...portions of east-central Minnesota into central
Wisconsin

Concerning...Heavy snow=20

Valid 220346Z - 220645Z

SUMMARY...A few instances of 1+ inch/hr snowfall rates are possible
over the next few hours.

DISCUSSION...A 500 mb jet streak is overspreading the Upper MS
Valley, supporting strong low-level warm-air advection within a
sub-freezing troposphere. As a result, 700 mb frontogenesis is
increasing along the MN/WI border, boosting deep-layer ascent within
a deepening dendritic growth zone. Multiple surface observations
have recently shown heavy snow ongoing across Sherburne to Chisago
Counties in Minnesota. Additional instances of heavy snow are likely
along the 700 mb frontogenesis axis over the next few hours, with 1+
inch/hr snowfall rates and instances of reduced visibility possible.

..Squitieri.. 03/22/2024

...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!4Ba-MmzKWh8Kfb1pgSh3ozNyL7BL0w8ro3qYyU5sK0BTUPh9FDcsezN3DiudlGCO9VxYL6IsR= kSxfJQR24I55uvlMto$ for graphic product...

ATTN...WFO...GRB...ARX...MPX...

LAT...LON 45549426 45609255 45239024 44578849 44328835 44098865
44108963 44229088 44579227 44959342 45249443 45549426=20


=3D =3D =3D
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