Map Image Legend Image

Iowa Weather Network Warnings Map

Iowa Weather Network Warnings Map

Winter Weather Advisory

Monday, September 20, 2010

Severe Storms possible this afternoon/tonight. Looking better for Wednesday.

Regional View.



A strong warm front/cold system will move across the Upper Midwest, separating a cool air mass from a hot one, This will bring heat and humidity to Iowa, where highs will be in the 90, and a chilly air mass to Northern Wis/Minnesota, where highs will be in the 50s. there threat for severe storms in Minnesota and Wisconsin Monday Night. Tuesday the cold front will pass through, bringing a chance of rain early. Wednesday looks pleasant and drier, but cooler.



Local View.


Note I and making a forecast for today late because of the severe weather potential in the local area this evening.

Locally, A Strong warm front will approach the area by this evening, This will be the separating line from relatively warmer temperatures from cold temperatures. The front will likely surpass some of the area, and looks likely that parts of the Southern area could hit 70.F with some sun possible. While the North could remain under clouds the upper 50s. Drizzle will also be common north of the front.

This evenings severe weather threat.


This system looks complex but strong. There may be enough ingredients that some of the showers that form near the triple point could get strong and become severe. The triple point will pass close to the local area, and it's possible severe storms could happen despite of not seeing any sun. The main threats are large hail, strong winds. and the chance for tornado's. The best chance appears to be late Monday. People in the area should be aware that there is the chance for severe weather.

Tuesday looks like a chance of rain in the morning as the cold front passes through. It's possible we could have out daytime highs early, when it could be in the 70s. then the cold front passes and it will become partly cloudy and cooler. it could be breezy as well. Tuesday Night as a cooler air mass settles in, will be chilly with lows falling into the mid 40s to low 40s north.

Wednesday looks nice, but a bit chilly. It will be dry, and highs should be in the mid 60s. Wednesday Night Clouds increase ahead of our next system.

Rest of Monday, Cloudy and chilly at first then turning Partly Cloudy late. Highs in the low 70s south to upper 50s North. Showers and Thunderstorms possible late. Some storms could be severe. Monday Night, Mild with a chance of showers and Thunderstorms, some could be severe. Lows steady in the mid to upper 60s

Tuesday, A chance of showers and thunderstorms early then Partly Sunny, Highs near 70.F early then cooling off. Breezy in the afternoon. Tuesday Night, Partly Cloudy Much cooler with lows in the low to mid 40s.

Wednesday, Nice, Sunny with highs in the lower to mid 60s. Wednesday Night, Increasing Clouds lows in the low 50s.

Looking Ahead

Clouds increase Wednesday in advance of a potential strong system for Thursday which will last into Friday, Heavy rainfall is appearing likely at this time, with potential very gusty winds. The weekend looks dry with partly cloudy to partly sunny skies, with a high pressure system moving in. Monday the 17th looks Warmer, as a warm air mass from the south moved in. We may have a shot at 80.F, The warm air mass looks to continue into the midweek of that week, before cooler and rainy conditions move in by the 30th, It looks warmer and less stormy as we head into the first parts of October.

No comments: