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AC or Furnace
The last few days we have been getting use to temperatures in the 70s & 80s. Keep in mind, this is April in the Midwest. It can turn cold this time of year, it can even snow if it wants to...This year it doesn't want to, it could barely snow during the winter.
We are watching a cold front that will be drifting towards us through Thursday. Thursday night the front will sweep through as a storm forms along the front and races east. There is much question on how much rain we will get from this front as most of the storm's energy may stay north. There is not much question that it will be 10-20 degrees colder behind the front. Friday looks mostly cloudy, windy & colder with highs struggling to 60. Friday night the skies will clear with the winds becoming light. This is a recipe for maximum cooling, called "radiational cooling". See the forecast lows for Saturday morning below from our long range computer model, the GFS.
It does not look like a freeze, but some frost is not out of the question with lows dropping to the upper 30s. Note, there may be another cold shot next week.
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Posted by at April 19, 2005 8:06 PM
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I grew up in the Great Lakes, so I know what humidity is like with the lakes around. What makes it so humid here in the Plains?
Kathy,
GREAT question! Our moisture comes from the Gulf of Mexico, and maybe to your surprise so does the humidity from the Great Lakes. The water is so cool in the Great Lakes that it only provides a little humidity during the summer. The major source is the Gulf where the water is very warm.
Gary Lezak
Posted by: Kathy at April 20, 2005 12:30 PM
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