|Mesoscale Discussion 856|
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Mesoscale Discussion 0856
NWS Storm Prediction Center Norman OK
0204 AM CDT Sat May 27 2017
Areas affected...Portions of northern Arkansas and southern Missouri
Concerning...Severe Thunderstorm Watch 272...
Valid 270704Z - 270900Z
The severe weather threat for Severe Thunderstorm Watch 272
SUMMARY...A small cluster of strong/locally severe storms continues
across the Ozarks vicinity, where large hail and locally damaging
winds remain possible.
DISCUSSION...Latest radar loop shows a small cluster of strong
storms crossing parts of southwest MO and adjacent northern AR, with
the strongest cell -- a severe storm which has recently produced 2"
hail -- now crossing Boone County AR just south of the MO/AR border.
The storms are ongoing within a favorable thermodynamic environment,
near the nose of a subtle 30 to 35 kt low-level jet per recent VWP
data from area radars. Surface analysis reveals a weak mesolow over
northeast OK, with a mesoscale warm front extending east-northeast
into northwest AR/southwest MO -- i.e. across the region where
storms are ongoing. With this boundary -- and the aforementioned
low-level jet -- providing a source of low-level ascent, and with
the kinematic and thermodynamic environment supportive of
organized/rotating updrafts, local severe risk will likely continue
across this area over the next several hours.
...Please see www.spc.noaa.gov for graphic product...
LAT...LON 35779453 36049468 36619446 36929404 37119243 37259117
36049058 35639154 35779453
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