National Weather Service United States Department of Commerce

Prolonged Atmospheric River Will Impact the Northwest Early this Week

A weather system in the Pacific Northwest will produce rain throughout the day, before a potent atmospheric river produces a prolonged round of heavy rainfall, widespread urban and river flooding, and high elevation snow to the region Monday through Wednesday. Showers and thunderstorms may produce isolated damaging winds, a brief tornado, and locally heavy rainfall across parts of Florida today. Read More >

3/19/2003 - Event Summary

At the surface, a strong area of low pressure was centered over eastern Oklahoma and northwestern Arkansas on the morning of the 19th. A stationary front extended from the low into the Ohio Valley. A strong cold front trailed from the low into northeastern Arkansas and Mississippi. Storms developed in the late morning into the early afternoon hours as the cold front pushed near and east of the I-65 corridor. Some of these as seen below produced damaging winds, hail up to 1.5 inches in diameter, and tornadoes.  

 
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March 19th, 2003 Surface Analysis at 7 AM March 19th, 2003 500 mb Analysis at 7 AM