Omega block pattern continues to trigger rain chances in Michigan
GRAND RAPIDS, Mich. (WOOD — It has been a rainy start to May, with Grand Rapids already accumulating 1.22 inches.
This week will kick off with more rain chances due to a blocking pattern across the country.
An omega block pattern occurs when two low pressure systems, usually cut off from the jet stream, hold in place on opposite sides of the country, resulting in a shape like the Greek letter omega.
This pattern typically results in ongoing chances for clouds and rain on the East and West Coast while the central part of the country remains dry and quiet thanks to high pressure. This blocking pattern can last for several days, much like it has in this case.
Inside woodtv.com: Radar
Over the weekend, one of two low pressure systems became 'closed off' across the Ohio Valley. This means that the system is rather isolated and not moving along with the jet stream. For Michigan, this has meant ongoing rain moving from east to west, or counterclockwise. Typically, rain chances move west to east along with the upper air flow.
Rain chances continue through Tuesday before the cut off low pressure system is able to break free. High pressure will settle in, bringing sunshine and warmer temperatures.
Storm Team 8 Forecast
The quiet and sunny pattern is expected to continue through the weekend and potentially into early next week. Ideal weather is expected for the Amway River Bank Run and Mother's Day.
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