|Mesoscale Discussion 984|
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Mesoscale Discussion 0984
NWS Storm Prediction Center Norman OK
0400 AM CDT Sun Jun 11 2017
Areas affected...east-central SD into southwest MN
Concerning...Severe Thunderstorm Watch 311...
Valid 110900Z - 111000Z
The severe weather threat for Severe Thunderstorm Watch 311
SUMMARY...A corridor of scattered to widespread gusts ranging from
50-75 mph are possible as the storm mode evolves from cellular to
bow/line segment over the next 1-2.5 hours.
DISCUSSION...Radar mosaic shows a congealing cluster of
intense/severe thunderstorms from near Huron southwest into Buffalo
County as of 09Z. A couple of storms have developed in the warm
advection wing to the east of the severe cluster during the past
hour concurrent with a merging of thunderstorms cores on southwest
flank of the lead cellular storm. The continued upscale growth into
a severe bow/line segment is likely over the next 1-2.5 hours to the
north of a warm front draped over far southeastern SD into the
southern tier of counties in southern MN. As a result, it appears
increasingly likely a concentrated area to the east of the
thunderstorm complex (Miner/Kingsbury counties east into Lincoln
county MN) will have increased potential for scattered to widespread
50-75 mph gusts.
...Please see www.spc.noaa.gov for graphic product...
LAT...LON 44199937 44579828 44709645 44349562 43939620 43839855
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