Mesoscale Discussion 1016
NWS Storm Prediction Center Norman OK
0424 PM CDT Sat Jun 19 2021
Areas affected...Nebraska Panhandle and Northeastern Colorado
Concerning...Severe Thunderstorm Watch 286...
Valid 192124Z - 192330Z
The severe weather threat for Severe Thunderstorm Watch 286
SUMMARY...Numerous strong-to-severe thunderstorms have developed
from the Nebraska Panhandle southward to south-central Colorado.=20
These storms will initially pose a threat for large hail and
damaging winds. As they grow upscale, especially across the eastern
Nebraska Panhandle and northeastern Colorado, the threat for a more
organized wind threat is expected to develop.
DISCUSSION...With numerous thunderstorms across the area in close
proximity to one another, cold pool mergers are already taking place
in the Nebraska Panhandle. As a result, storms are already
beginning to surge southeastward. Over the next couple of hours,
these storms and the storms in northeastern Colorado are expected to
grow upscale. Given the steep lapse-rate environment, sufficient moisture/instability, and increasing midlevel flow/forcing, an
organized severe wind threat is expected to develop.
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