|Mesoscale Discussion 1354|
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Mesoscale Discussion 1354
NWS Storm Prediction Center Norman OK
0511 PM CDT Wed Jul 19 2017
Areas affected...Northeast IA...Southern WI...Northern IL
Concerning...Severe potential...Watch needed soon
Valid 192211Z - 192245Z
Probability of Watch Issuance...95 percent
SUMMARY...Severe threat is increasing across northeast IA, southern
WI, and northern IL. Damaging winds are likely with thunderstorms
this evening. WW will be issued soon to address this threat.
DISCUSSION...Long-lived MCS is beginning to turn a bit more
southeast as it progresses across southeast MN and northern IA.
Southern-most flank of this activity is surging southeast at roughly
50kt and will should track across the remainder of WW421, exiting
the watch shortly after 23z. Damaging winds are expected along the
leading edge of the squall line. WW will be issued soon to reflect
...Please see www.spc.noaa.gov for graphic product...
LAT...LON 43908987 42548823 41068945 42449216 43908987
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