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Iowa Weather Network Warnings Map

Iowa Weather Network Warnings Map

Winter Weather Advisory

Thursday, September 24, 2009

Better Rain Chances, Then Much Cooler Next Week.

Weathermap for Friday Saturday and Sunday

We will have 2 systems that will effect the weather this weekend. Both need to be talked about, The first System will be a weaker Low pressure system which will bring us some much needed rainfall Friday and Saturday, most of the rainfall will fall Late Friday into Saturday, it looks like it will start off as some Thunderstorms in the southern counties. before turning mainly into Scattered showers, Temps will be pretty steady with this system highs in the upper 60s both days, also it will feel Humid.

The Second system will be a Strong low pressure to the North & with strong cold front, this system will bring a chance of showers, Best chances North, but the major story with this system will be the Much cooler weather, and Windy conditions starting late Sunday, And Early next week on Monday, the cold air could lead to some places getting their first frost of the season, in some areas that did not already have their first frost.

I will go into detail a bit about the Strong cold front & System for late in the weekend and early next week. a Low pressure system will really begin to Strengthen over Lake Superior on Sunday and Monday, this will shift and increase our winds from the northwest and it will become pretty windy, at the same time a Strong cold front will start to close in Late Sunday Night, Yesterday I thought showers would be a good bet for us, but now I'm thinking with the latest forecast model run most of the rain will be in the Northern 6 county area and, still a chance of showers all across though. Late Sunday and into Monday Morning, The front will pass through some point on Sunday, Much cooler temperatures and Windy conditions will follow the front, Highs will only be in the upper 50s Monday. Detailed forecast below,

Friday, Cloudy, a passing shower possible during the day, then late Friday a chance of showers highs in the upper 60s, Friday Night, A good chance of showers, possible a Thunderstorm, in the Southern counties, lows in the low 50s.

Saturday, Cloudy with Scattered lingering showers during the day, maybe some Sun breaks during the day, Highs in the mid 60s. Saturday Night, linger showers possible early then cloudy lows in the low 50s.

Sunday, Cloudy during the day, with Increasing winds then turning breezy, Highs in the upper 60s to low 70s before the front passes. Sunday Night, Breezy, A chance of Showers... then late, a good chance of showers, lows in the upper 40s,

Monday Preview, Showers possible early, Much Cooler and Windy, highs in the upper 50s.
Monday Night I am unsure of how cold it will actually get, but I believe it could be Cold across the area, I really think some Frost Will be possible with lows falling in the upper 30s or colder, this same air mass may even again produce frost on Tuesday Night, but at this point I am un sure of how this part of the forecast or how cold it will get I ask that you please check back in on Sunday when I will issue a forecast,Sunday and update about these chance.
after this cool air mass, The model shows warming temperatures up through the middle of next week and it looks like we will be preip free, then by Late next week, the models show another strong cold front pulling in a cool air mass by Saturday and Sunday. but things could change a bit before next weekend so stay tuned through this week. right now This weekends systems are the main thing to worry about.

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