Mesoscale Discussion 0717
NWS Storm Prediction Center Norman OK
0656 PM CDT Tue Jun 12 2018
Areas affected...much of central and northern Wisconsin
Concerning...Severe potential...Watch possible
Valid 122356Z - 130230Z
Probability of Watch Issuance...40 percent
SUMMARY...Scattered storms are expected to form this evening, with a
marginal hail and wind threat.
DISCUSSION...Visible imagery shows a CU field increasing from near
MSP eastward across northern WI, ahead of a developing cold front
and where strong height falls are expected later tonight. Low-level
winds will remain relatively veered/westerly, but the increasing
large-scale lift should result in scattered storms forming over WI,
and possible moving into Upper MI. Lengthening hodographs may
support a few long-lived storms, and MLCAPE on the order of 1000
J/kg may support marginal hail or wind. However, given the strong
shortwave trough, trends will be monitored for greater severe
potential this evening.
...Please see www.spc.noaa.gov for graphic product...
LAT...LON 45499247 46638813 46538711 45938668 44648716 44348769
44318917 44329113 44559184 44849236 45139263 45499247