"We've been trying to stress, don't wait until you see visual cues of the storm approaching, take action when warnings are issued." "We are concerned about strong tornadoes and widespread damaging winds," Bill Bunting, chief of forecast operations at the Storm Prediction Center, told CNN, noting the storms will be fast-moving. Overall, the moderate risk area covers 10 million people. Some of the tornadoes may be EF-3 or higher, meaning they would have winds of at least 136 mph. "Swaths of intense damaging wind gusts along with very large hail are expected as well." "At least a few long-track, strong to potentially violent tornadoes are probable, particularly over portions of the Mid-Mississippi Valley to the Mid-South," the Storm Prediction Center said. The last Level 5 high risk day occurred on March 25, 2021, when numerous tornadoes were reported across the Southeast.Ī moderate, Level 4 of 5, risk of severe storms stretches from northern Mississippi to Iowa, including Indianapolis, Indiana, Little Rock, Arkansas, Des Moines, Iowa, and St. High risk days are exceedingly rare and are "reserved for when high confidence exists in widespread coverage of severe weather with embedded instances of extreme severe" weather such as violent tornadoes or extreme damaging winds, according to the storm center. "Environmental conditions are quickly becoming favorable to support the potential for numerous strong to potentially violent and long-track tornadoes," the center said. Memphis, Tennessee, is included in the high risk area. The second area is farther south and includes portions of eastern Arkansas, northern Mississippi and southwestern Tennessee. High risk areas include portions of southeastern Iowa, northwestern Illinois and northeastern Missouri, and includes places like Davenport, Iowa, and Iowa City. Nearly 90 million people are at risk of severe storms, including tornadoes and damaging winds, on Friday. (CNN) - A rare "high risk" Level 5 out of 5 alert has been issued for two regions and will impact nearly 3 million people, the National Weather Service's Storm Prediction Center said Friday.
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