Severe Storm Outlook Narrative (AC)
Issued by NWS
ACUS11 KWNS 110532
SPC MCD 110532
Mesoscale Discussion 1876
NWS Storm Prediction Center Norman OK
1132 PM CST Sat Dec 10 2016
Areas affected...Portions of eastern SD...southern
Valid 110532Z - 110930Z
SUMMARY...A band of moderate to locally heavy snow capable of
producing snowfall rates up to 1 inch per hour will continue to
become established and persist into the overnight hours.
DISCUSSION...Radar loops continue to depict the consolidation of a
band of snow from eastern SD to western/southern WI. This activity
is supported by ascent accompanying low-to-mid-level frontogenetic
circulations amidst a warm-advection pattern. The ascent will
continue to extend through relatively deep dendritic growth zones in
support of snow rates to 1 inch per hour through the overnight
hours, as mesoscale banding continues. The axis of the band of
heavier snow could exhibit little overall motion, as a low-amplitude
midlevel trough approaches from the northern High Plains.
...Please see www.spc.noaa.gov for graphic product...
LAT...LON 44359015 43928920 43528963 43559082 43909356 44549774
44949846 45229731 45079501 44639161 44359015