Mesoscale Discussion 0771
NWS Storm Prediction Center Norman OK
0325 PM CDT Thu May 27 2021
Areas affected...northern Oklahoma
Concerning...Tornado Watch 215...
Valid 272025Z - 272200Z
The severe weather threat for Tornado Watch 215 continues.
SUMMARY...Storms will remain capable of producing large to very
large hail, damaging wind and a couple tornadoes next couple hours
mainly across the northern half of Oklahoma.
DISCUSSION...As of mid afternoon storms continue developing across
northern OK. Most thunderstorm development has become confined to
the cool side of a couple of outflow boundaries. These storms are
probably slightly elevated, but will remain capable of producing
mainly isolated large hail and damaging wind. Farther west
additional storms are beginning to develop along the cold front
across northwest OK. These storms will be surface based and will
likely become rapidly severe and organized as supercells shortly
after initiation. VWP from Twin Lakes show the mid-level winds have strengthened to 50 kt and size of low-level hodographs has increased
slightly. The best potential for isolated tornadoes will probably be
with storms that initially develop across western and west central
OK then move east and interact with the modifying outflow boundary
before becoming slightly elevated as they move deeper into the
cooler side of the boundary.
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