|Mesoscale Discussion 851|
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Mesoscale Discussion 0851
NWS Storm Prediction Center Norman OK
0928 PM CDT Fri May 26 2017
Areas affected...Central IN...Southwest OH
Concerning...Severe Thunderstorm Watch 270...
Valid 270228Z - 270400Z
The severe weather threat for Severe Thunderstorm Watch 270
SUMMARY...The severe threat continues across WW 270, but should
continue to decrease with time. Downstream watch issuance is
currently not anticipated.
DISCUSSION...The thunderstorm cluster that earlier produced severe
wind and hail across portions of western and central IN has evolved
into a small QLCS and accelerated east-southeastward during the last
hour or so. As the system moves into southwest OH, some threat of
locally damaging wind will exist, but the relatively hostile
environment (sampled by the 00Z ILN sounding) downstream should
result in a continued decrease in the severe wind threat with this
system. Downstream watch issuance into additional portions of
southern OH is currently not anticipated.
In the wake of the QLCS, elevated thunderstorms have occasionally
flared up across portions of central and northern IN, likely aided
by continued influx of steep midlevel lapse rates from the west and
weak ascent atop the outflow. Some hail threat will exist with the
strongest of these cells, but a substantial severe threat is not
expected with this activity.
...Please see www.spc.noaa.gov for graphic product...
LAT...LON 40488721 41128582 41218529 39698382 39158436 39128510
39198625 39378693 39668726 39708730 40488721
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