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Extreme Heat Lingers; Severe Thunderstorms for Portions of the Plains and Southeast; Heavy Rainfall Threats

Gusty winds and heavy rainfall may impact the Big Island of Hawaii as a nearby tropical system passes west of the islands. From the Southwest U.S., Rockies and across the Gulf Coast, heavy rainfall could lead to isolated flash flooding. Severe thunderstorms are expected for areas of the Plains, Gulf Coast and Southeast through Tuesday. Extreme heat lingers for the southern Plains and Southwest. Read More >

Event Summary: May 16, 2019

A slow, south moving cold front and an outflow boundary from morning thunderstorms over northern Illinois combined with a hot and humid environment to produce widespread showers and thunderstorms across eastern Iowa and northwest Illinois overnight. Several thunderstorms became severe, and produced large hail and damaging winds. Quarter sized hail was reported across Clinton and Iowa counties, while destructive winds of 70-90 MPH were reported Iowa and Washington Counties. 

In addition, torrential rainfall amounts of 1-2 inches were reported along the I-80 corridor as storms slowly moved across the area. This lead to flash flooding across many major roadways, including I-80 near Coralville and Highway 965 in Oakdale.

 

 

 

 

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Surface Analysis (Courtesy Weather Prediction Center)

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