Heavy Rain and Flash Flooding in the West; Heat Expands in the Central U.S.

Monsoonal moisture will produce showers and thunderstorms with heavy rain over parts of the Southwest, Great Basin, and Central Rockies through Monday. Flash flooding is possible, especially in and around burn scars and in areas of steep terrain. Heat will persist across the Central U.S. early this week, spreading into the Ohio Valley and Mid-Atlantic later this week. Read More >

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La Nina Winters Tend to have the colder temperatures and more significant snowfall toward the second half of the winter.

The chart above is based on all La Nina winters from 1949 to the present, there were 21 winters, 1949-50, 1953-54, 1954-55, 1963-64, 1966-67, 1969-70, 1973-74, 1974-75, 1983-84, 1987-88, 1994-95, 1998-99, 1999-2000, 2006-07, 2007-08, 2009-10, 2012-13 and 2016-17.

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Heavy Rain and Flash Flooding in the West; Heat Expands in the Central U.S.

The Impact of La Nina on Southwest Michigan Winters

La Nina Winters Tend to have the colder temperatures and more significant snowfall toward the second half of the winter.