|Mesoscale Discussion 726|
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Mesoscale Discussion 0726
NWS Storm Prediction Center Norman OK
1014 PM CDT Mon May 15 2017
Areas affected...Southern Wisconsin and Northern Illinois
Concerning...Severe Thunderstorm Watch 217...
Valid 160314Z - 160415Z
The severe weather threat for Severe Thunderstorm Watch 217
SUMMARY...A lingering severe wind threat will exist with the forward
propagating linear segment across the discussion area.
DISCUSSION...A line of convection with a history of significant wind
and hail reports continues to move eastward at around 35-45 knots
across south-central Wisconsin and adjacent northern Illinois.
Enough residing shear and instability exists for a continued
damaging wind threat with this activity, especially in northern
Illinois and far southern Wisconsin where some surface-based
instability remains. A southeastward spatial extension of the watch
should be considered, especially if additional development occurs on
the southern flank of the ongoing convective line over the next
...Please see www.spc.noaa.gov for graphic product...
LAT...LON 43298911 43318879 43098815 42698789 42048778 41608771
41448790 41578858 41918921 42228928 42728927 43048926
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