188
ACUS11 KWNS 072315
SWOMCD
SPC MCD 072314
MNZ000-SDZ000-NDZ000-080315-

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