SPC MD 74

SPC MD 74

MD 0074 CONCERNING HEAVY SNOW FOR SOUTHERN ND VICINITY

MD 0074 Image

Mesoscale Discussion 0074
NWS Storm Prediction Center Norman OK
0514 PM CST Fri Feb 07 2025
Areas affected...southern ND vicinity
Concerning...Heavy snow 
Valid 072314Z - 080315Z
SUMMARY...Narrow, transient bands of heavy snowfall rates around 1
inch per hour should persist through the mid-evening hours across
the southern North Dakota vicinity, potentially impacting areas
along and south of the I-94 corridor.
DISCUSSION...Per recent reports from WFO BIS/FGF and observational
imagery, a thin band of heavy snow has been ongoing across a portion
of southern ND, which the bulk of daytime guidance was underdone
with. This snow band appears to be associated with an arc of
maximized low-level isentropic ascent amid a rather cold
thermodynamic profile supporting high snow-to-liquid ratios. Forcing
for ascent above the dendritic growth zone will overspread some of
this same corridor into mid evening as a mid-level shortwave impulse
over southeast MT shifts east. This should maintain favorable
large-scale lift and may aid in producing additional narrow bands
towards the SD border area. This scenario is supported by a relative
increase in heavy snow potential from 12Z HREF and 15Z SREF winter
guidance.
..Grams.. 02/07/2025
...Please see www.spc.noaa.gov for graphic product...
ATTN...WFO...FGF...ABR...BIS...UNR...
LAT...LON   46480233 46740075 46799757 46439645 46109649 45809715
            45720016 45520178 45590262 46480233 

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