Saturday, August 7, 2010

Slight Chance of Storms Late Sunday Night

Skies will be partly cloudy overnight, and it will be seasonally mild with a low in the middle 60's. An expanding area of strong to severe thunderstorms over Minnesota and northern Wisconsin is expected to fall apart as it moves southeast overnight before is crosses the Wisconsin/Illinois border. However, a couple of stray storms may reach areas to the northwest of Rockford late tonight or early on Sunday morning.  Those decaying storms will lay down an outflow boundary across southern Wisconsin or extreme northern Illinois that will serve as a focus for thunderstorm development on Sunday afternoon or early evening.  It will become hot and more humid with a brisk southwesterly breeze on Sunday.with an afternoon high temperature near 90 degrees. There is a slight chance of thunderstorms in the afternoon and a better chance Sunday night.  There is a slight risk that some of those storms may become severe. It will be a hot and humid week with daily chances of afternoon and evening thunderstorms.  There will be a better chance in the overnight periods with nocturnal thunderstorm complexes developing over northwestern Iowa, or eastern South Dakota in evening, and then moving southeast toward eastern Iowa, southwestern Wisconsin, and northern Illinois by the late night hours.
By meteorologist
Eric Nefstead

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