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Iowa Weather Network Warnings Map

Iowa Weather Network Warnings Map

Winter Weather Advisory

Monday, September 19, 2011

Very Strong cold front plus system for Tuesday, chance of strong storms, then turning very cool wet and windy Tues. night and Wednesday.

Regional Weather View.



A potent system will plow through the Upper Midwest on Tuesday bringing with it a huge transition in the weather. There will be a chance of severe weather on one side, and windy very cool weather on the other. Conditions will clear up and becoming nicer come Thursday.



Local Weather View.



Locally we can expect a nice start to Tuesday, it will be partly cloudy with highs in the low 70s. Then thunderstorms could develop along the front in the afternoon, and if they do some could become Strong, possibly severe. But the chance of this happening is quite slim. What is likely to be the bigger story for Southeastern Minnesota will be the much cooler and windy conditions near, and behind the front. As the front approaches Tuesday Evening winds from the West will kick up very quickly, and could gust 25 to 30MPH, possible 40MPH, which could cause some minor issues. The wind will spill into Wednesday, when it will be much cooler, mostly cloudy with off and on drizzle or light rain, if enough instability builds up there could be a few cells with some grapple or enhanced gusts. Highs will not warm much at all, and will be lucky if we reach the upper 50s. Wednesday Night, we can expect a chilly breezy night with lows dropping in the low 40s. Thursday will be the much better day, we should get some sunshine with a drier airmass, and with the added sun, highs will warm to near 60, but with the drier air it will cool off Thursday Night, lows may dip into the upper 30s, with possibly some patchy frost.
Metro View.



For the Rochester Metro we can expect mid 70s Tuesday, with the storm chances mainly early in the day. It is slim that Rochester will see one of these storms, but if we do, it could be on the stronger side. Windy conditions near the front will reach the metro by evening, and could cause some minor issues. Gusts to near 35MPH are possible Tuesday, lasting through Wednesday making it feel raw. Highs will likely not reach 60, with as mentioned above the off and on drizzle or light rain. Thursday will be much brighter, with partly cloudy skies and highs in the low 60s. Under the current forecasts, lows Thursday Night should not drop cool enough to see frost in Inner city and Downtown locations, but outer cities may see patchy frost.



Tuesday, Partly Cloudy with a slim chance of a thunderstorm, some could be strong possibly severe. Highs in the lot to mid 70s. Then increasing cloudiness and wind. Tuesday Night, Windy, winds could gust to near 35MPH, possibly 40MPH at times. Otherwise partly cloudy with lows in the mid 40s.



Wednesday, Windy, Cold, Mostly cloudy with off and on drizzle. Highs in the mid to upper 50s Winds could gust to 30MPH. Wednesday Night, Cloudy, lows in the mid 40s.



Thursday, Clearing skies. Partly cloudy with highs in the upper 50s to low 60s. Thursday Night, chilly, clear skies with lows in the upper 30s to low 40s.



No looking ahead forecast.

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