Thousands without power as Iowa, Minnesota slammed with most hurricane-force wind gusts since 2004

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Kentucky officers survive deadly tornado and save injured girl

Graves County Sherriff's Sgt. Richard Edwards, who was in his patrol car when the deadly tornado hit Kentucky, describes surviving the storm and rescuing others.

One person has died and thousands are still without power after a powerful storm system swept across the Great Plains and Midwest, authorities said, bringing hurricane-force wind gusts and spawning reported tornadoes in Nebraska and Iowa. 

A semitrailer was stuck by high winds rolled and onto its side on southbound U.S. Highway 151 in eastern Iowa on Wednesday evening as severe weather moved through the area, killing the driver, the Iowa State Patrol said. 

The storm was shifting north of the Great Lakes into Canada on Thursday, with high winds, snow, and hazardous conditions continuing in the upper Great Lakes region, the National Weather Service said. 

More than 400,000 homes and businesses were without electricity Thursday morning in Michigan, Wisconsin, Iowa and Kansas, according to poweroutage.us, which tracks utility reports. 

An Iowa State Patrol trooper works the scene of an overturned semi-truck along the westbound shoulder of Interstate 80 near Anita, Iowa, after a band of intense weather crossed through the area.  (USA TODAY NETWORK via Reuters Connect)

DESTRUCTIVE WEATHER ROLLS THROUGH PLAINS, MIDWEST 

There were more than 20 tornado reports Wednesday in the Plains states, scattered through eastern Nebraska and Iowa, based on preliminary reports to the Storm Prediction Center. 

The day also saw the most reports of hurricane-force wind gusts -- 75 mph or higher -- of any day since 2004, the Storm Prediction Center said. 

"To have this number of damaging wind storms at one time would be unusual anytime of year," said Brian Barjenbruch, a meteorologist with the National Weather Service in Valley, Nebraska. "But to have this happen in December is really abnormal." 

The system came on the heels of devastating tornadoes last weekend that cut a path through states including Arkansas, Missouri, Tennessee, Illinois and Kentucky, killing more than 85 people. 

The strong winds also whipped up dust that reduced visibility to zero west of Wakeeney, Kansas, the state Department of Transportation said, and caused at least four semitrailers to blow over. Kansas officials closed Interstate 70 from the Colorado border to Salina, as well as all state highways in nine counties in northwest Kansas. 

The National Weather Service had issued a high wind warning for an area stretching from New Mexico to upper Michigan, including Wisconsin and Illinois. Gusts topping 80 mph were recorded in the Texas Panhandle and western Kansas. The weather service said an automated observation site in Lamar, Colorado, recorded a gust of 107 mph Wednesday morning. Wind gusts of 100 mph were reported in Russell, Kansas. 

KANSAS, NEBRASKA, IOWA, MINNESOTA AND COLORADO AMONG STATES IMPACTED BY SEVERE WEATHER 

Greg Butcher, the city administrator in Seward, Nebraska, said he was standing in his office at city hall Wednesday when he saw a giant wall of cloud rolling toward him. Butcher said he braced for a major hit but so far the worst damage appears to be a few toppled telephone poles. 

"We lucked out," Butcher said. "It came in really fast." 

Officials also warned of a dangerous fire risk along the western edge of the weather system, where conditions were dry. 

Scientists say extreme weather events and warmer temperatures, much like what’s happening, are more likely to occur with human-caused climate change. However, scientifically attributing a specific event like this storm system to global warming requires specific analysis and computer simulations that take time, haven’t been done and sometimes show no clear connection. 

"I think we also need to stop asking the question of whether or not this event was caused by climate change. All events nowadays are augmented by climate change," said Northern Illinois University meteorology professor Victor Gensini. "We need to be asking, `To what extent did climate change play a role and how likely was this event to occur in the absence of climate change?'" 

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The unusually warm temperatures on Wednesday were due in part to record high ocean temperatures in the Gulf of Mexico, which wouldn’t have happened without global warming, said Jeff Masters, a Yale Climate Connections meteorologist who co-founded weather news site, Weather Underground. 

The system blew into the Plains from Colorado, where high winds knocked out power, closed roads and highways and delayed or canceled hundreds of flights. The weather service said a wind gust of 100 mph was recorded on the airfield at the Air Force Academy in Colorado Springs.