Mesoscale Discussion 0797
NWS Storm Prediction Center Norman OK
0639 PM CDT Tue May 19 2026
Areas affected...portions of eastern and southern Ohio...far
southeastern Indiana
Concerning...Severe Thunderstorm Watch 230...231...
Valid 192339Z - 200045Z
The severe weather threat for Severe Thunderstorm Watch 230, 231
continues.
SUMMARY...A few damaging gusts are possible over the next couple of
hours before boundary layer stabilization occurs. Local WW
extensions may be needed if storms can maintain their intensity.
DISCUSSION...A persistent elongated MCS continues to track eastward
across the eastern OH Valley with a history of widely scattered
damaging gusts. Surface temperatures range from the low to mid 80s F
ahead of the line, accompanied by 1500-2000 J/kg MLCAPE, suggesting
that the boundary layer is still unstable and mixed enough to
support a few additional damaging gusts. However, this threat should
gradually subside with the loss of daytime heating. Still, WW
extensions may be needed if storms persist for more than a couple of
hours.
..Squitieri.. 05/19/2026
...Please see www.spc.noaa.gov for graphic product...
ATTN...WFO...PBZ...RLX...CLE...ILN...LMK...IND...
LAT...LON 38738717 39338523 40098396 41368243 41628156 41528086
41268073 40768113 39918232 39128295 38808353 38648420
38608539 38648685 38738717
MOST PROBABLE PEAK WIND GUST...55-70 MPH
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