|Mesoscale Discussion 1216|
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Mesoscale Discussion 1216
NWS Storm Prediction Center Norman OK
0641 PM CDT Mon Jul 13 2020
Areas affected...far northeast CO...northwest KS...southwest NE
Concerning...Severe Thunderstorm Watch 366...
Valid 132341Z - 140145Z
The severe weather threat for Severe Thunderstorm Watch 366
SUMMARY...Severe gusts ranging from 60-80 mph and large hail are
possible through 02 UTC.
DISCUSSION...A broken band of primarily discrete thunderstorms is
developing across the eastern-most tier of counties in northeast CO
and into southwest NE early this evening. Surface analysis
indicates a gradual increase in low-level moisture with farther east
extent and 23 UTC observations show upper 50s dewpoints near the
storms whereas McCook, NE dewpoints are in the middle to upper 60s.
Ample high-level flow will aid in maintaining storm
venting/organization as the thunderstorm activity gradually
encounters a more moisture-rich boundary layer and larger CAPE
during the 01-03 UTC period. Expecting additional storm development
and upscale growth to occur over the next few hours with storms
generally reaching a Colby to McCook line near 02 UTC. Severe gusts
will become the primary hazard once storms grow upscale but large
hail will be possible prior to this convective mode transition
...Please see www.spc.noaa.gov for graphic product...
LAT...LON 39100231 40410251 41400125 40920044 38950124 39100231
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