SPC 0100Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0800 PM CDT Wed Aug 16 2023 Valid 170100Z - 171200Z ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS PARTS OF THE UPPER MISSISSIPPI VALLEY VICINITY... ...SUMMARY... Severe storms will continue over the next few hours across portions of Wisconsin. east-central and southeastern Minnesota, and a small portion of western Upper Michigan. ...Upper Mississippi Valley area... A band of vigorous/fast-moving, and locally severe convection is moving quickly southeastward across the northwestern Wisconsin vicinity at this time, ahead of an advancing cold front and parent/digging upper short-wave trough. New convection is also initiating at this time over south-central Minnesota, and may become strong/severe into the next hour or two. Later this evening, storms should gradually diminish in intensity, as instability diminishes substantially with eastward extent into central Upper Michigan and central Wisconsin. Until then, aided by ample instability and moderately strong/weakly veering flow with height through the mid troposphere, risk for locally damaging winds and hail -- and possibly a tornado -- will continue over the next few hours. ...Coastal portions of the Southeast into southern Georgia and Florida... Widespread storms are ongoing at this time near and ahead of a cold front lingering over coastal portions of the Southeast. While a general, diurnal wane in convective intensity has been observed over the past hours, local risk for gusty winds and marginal hail will persist for the next couple of hours with isolated, stronger cores. ..Goss.. 08/17/2023
