Mesoscale Discussion 2006
NWS Storm Prediction Center Norman OK
0751 PM CDT Mon Aug 26 2024
Areas affected...much of central Wisconsin
Concerning...Severe potential...Severe Thunderstorm Watch likely
Valid 270051Z - 270215Z
Probability of Watch Issuance...80 percent
SUMMARY...The severe threat is increasing across much of central
Wisconsin as a damaging-wind-producing MCS approaches the region. A
Severe Thunderstorm Watch may be needed in the next hour or so.
DISCUSSION...A well-developed, mature MCS with bowing tendencies and
a recent history of severe gusts, is approaching western Wisconsin,
east of Severe Thunderstorm Watch 651. Preceding the bowing MCS is a
corridor of strong to extreme MLCAPE (i.e. 4500-5000 J/kg) and
minimal MLCINH. However, vertical wind shear (especially in the low
levels) is not particularly strong, which is what is typically
needed for intense bow echo wind swaths. Furthermore, while surface
temperatures are around 90 F in spots, sunset is approaching, which
will support nocturnal cooling and an eventual increase in MLCINH.
On balance, at least some risk for continued severe gusts should
continue for at least a few more hours as the MCS exceeds the
eastern bounds of Severe Thunderstorm Watch 651. As such, a
downstream severe thunderstorm watch will likely be needed in the
next hour or so.
..Squitieri/Gleason.. 08/27/2024
...Please see www.spc.noaa.gov for graphic product...
ATTN...WFO...GRB...MKX...DLH...ARX...MPX...
LAT...LON 45649155 45549035 45168903 44678795 44228777 43848800
43548837 43588914 43678987 43859058 44009113 44169151
44359171 44569172 45649155
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