ACUS11 KWNS 301517
SWOMCD
SPC MCD 301516
MOZ000-ILZ000-KSZ000-301845-

Mesoscale Discussion 2246
NWS Storm Prediction Center Norman OK
0916 AM CST Sat Nov 30 2024

Areas affected...the I-70 corridor in MO

Concerning...Heavy snow

Valid 301516Z - 301845Z

SUMMARY...A narrow band of moderate to heavy snow should produce
rates near 1 in/hr as it shifts east along the I-70 corridor from
the Kansas City towards the St. Louis Metro Areas into early afternoon.

DISCUSSION...Multiple bands have recently consolidated into a higher-reflectivity singular band along the I-70 corridor in eastern
KS to western MO. This has impacted the Topeka to Kansas City Metro
Areas with heavy snow being reported in the 15Z obs at TOP and MKC.
Along the leading edge of the 35-dBZ reflectivity, enhanced KDP
values of 0.6-0.7 deg/km have been coincident with the dendritic
layer aloft, indicative of rates around 1 in/hr. While 12Z models
(outside of the RAP) have signaled lesser snowfall rates relative to
00Z guidance, the 00Z WRF-NSSL had a decent representation of the
band, albeit a few hours too slow. It appears this band will
probably continue eastward along the I-70 corridor towards the St.
Louis Metro Area into early afternoon.

..Grams.. 11/30/2024

ATTN...WFO...LSX...SGF...EAX...TOP...

LAT...LON 39259491 39259273 39209163 39119105 38899047 38509044
38399081 38389161 38519314 38629445 38919513 39259491


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