Friday, March 12, 2010

Unusual Backing Rains Moving Into The Stateline Tonight

A disturbance backtracking around the huge upper low over the midwest will bring rain showers back across the Stateline tonight.   The circulation around the big low over Missouri tonight will rotate a disturbance over Indiana back toward the northwest into central Illinois by morning.  Moderate rains over Indiana will move into Illinois later tonight.  It will be windy overnight through at least mid day on Saturday wtih the pressure gradient increasing across the area causing winds to gust from the north to northeast at 15 to 25 miles an hour.   It appears as if the heaviest rainfall will occur south of Interstate 80 late tonight, and before noon on Saturday.  Rainfall amounts will likely be more than 1" to the south of I 80, and will probably be less than one half inch across the Stateline close to the Wisconsin border.  Showers are likely to become more scattered on Saturday afternoon before coming to an end on Saturday night.  Low pressure will edge of toward the east on Sunday, and we may get some sunshine, but skies are expected to remain mostly cloudy.  By Monday high pressure over the northern plains will begin to have more impact on area weather allowing the March sun to warm temperatures back into the low 50's.  The rest of the week will see lots of sunshine and afternoon temperatures in the 50's each day.

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