00:48 Sioux Falls Tornado Rips Apart Building in Newly Released Footage Newly released footage from inside a health center in Sioux Falls shows the damage done by an EF-2 tornado that struck the city one year ago.

At a Glance Almost 400 reports of severe weather have been received over the past three days.

Almost 500 reports of severe weather have been received by the National Weather Service over the past three days primarily in the Plains and Midwest. We have a full breakdown of the severe weather since Tuesday in our recap section below.

Severe Weather Recap

Friday, May 4

Strong winds blew over a semi-truck near Whitehouse, Ohio as a line of thunderstorms reached far southern Michigan and western Ohio, early Friday afternoon. Several trees were also blown over in the gusty winds.

As of the morning of May 4, 20 tornadoes have been confirmed by National Weather Service damage surveys in Arkansas, Kansas, Missouri, Nebraska and Oklahoma. Here's a day-by-day breakdown of the severe weather.

Thursday, May 3

Earlier Thursday morning, an EF1 tornado tore a roughly one-mile path north of Ozark, Missouri, just south of Springfield, damaging roofs, destroying outbuildings, and damaging trees .

Trees and power lines were downed in Webb City, Missouri, near Joplin, damaging several vehicles. A lumber yard in the town of Edna, Kansas, suffered some structural damage and a roof of a carport was ripped off in South Coffeyville, Oklahoma.

An early afternoon EF1 tornado damaged trees and a pair of chicken houses near the town of Meg, Arkansas, about 25 miles east of Ft. Smith.

Scattered severe storms have downed trees in parts of southern New York and in central Iowa.

Damaging winds pushed a large tree onto an SUV and crushed it Thursday afternoon in Big Flats, New York. In Owego, New York, winds damaged a roof. Numerous trees were downed in the Westchester County town of Pleasantville.

Two tornadoes were observed by trained spotters near Prairie City and Hartford, Iowa before 7 p.m. CDT. A few trees were downed near Swan, Iowa.

What may have been a brief tornado embedded in a squall line downed trees in the town of Olin, Iowa, late Thursday night, according to storm chasers Dan Gottschalk and Kelly Lange.

Wednesday, May 2

Among the roughly 200 reports of severe weather, there were only 8 preliminary reports of tornadoes.

A tornado touched down in far southwest Oklahoma near town of Loveland, but no damage was reported, as of Wednesday evening. A 106 mph wind gust was clocked just southeast of Frederick within that severe thunderstorm.

Severe thunderstorms roared into both the Chicagoland and Kansas City metro areas with mainly damaging winds.

For the second day in a row, at least one tornado was sighted in Ottawa County, Kansas, though no additional damage was reported to the National Weather Service, in contrast to Tuesday's destructive EF3 tornado.

(MORE: Tuesday's Bennington, Kansas, Tornado a Strange Déjà Vu )

A possible tornado blew windows out of a home near Waterville, Kansas, about 75 miles northwest of Topeka.

Straight-line wind gusts up to 92 mph took down four power poles on highway 281 near Pratt, Kansas, between Dodge City and Wichita. Severe winds blew two roofs off of buildings in Iuka, which is 5 miles north of Pratt. Flooding was also reported .

Hail accumulated up to 6 inches deep near Greensburg, Kansas.

A short-lived tornado swirled dirt near Lone Wolf, Oklahoma around 4:40 p.m. local time, becoming Oklahoma's second tornado of the year.

Severe thunderstorms through the south side of the Kansas City spawned at least one tornado near the Kansas-Missouri state line west of Belton, Missouri. Trees and power lines were downed in Overland Park, Kansas, and signs were downed in Grandview, Missouri.

Several rounds of severe thunderstorms raked through Chicagoland in the late afternoon and evening.

One of these storms produced a 67 mph wind gust and quarter-size hail at Chicago's Midway Airport, producing damage to trees, vehicles, light poles, and a large section of roof torn off one home near the airport.

Numerous trees were downed and one apartment building had its roof peeled back in a swath of the city's south side east of the Dan Ryan Expressway, according to Chicago's Office of Emergency Management and Communications.

(LATEST NEWS: Severe Storms Knock Out Power in Chicago )

Another storm near Kankakee, Illinois produced winds strong enough to topple 20 power poles and peel roofs off of several buildings.

Thunderstorm winds gusted to 71 mph at South Bend, Indiana, uprooting trees in the city, and downing power lines in the neighboring city of Mishawaka.

Tuesday, May 1

There were about 120 reports of severe weather Tuesday, primarily in Kansas, Nebraska and Iowa. Among 18 reports of tornadoes, there appears to have been at least 7 actual tornadoes Tuesday. Damage surveys are ongoing from National Weather Service offices in Nebraska and Kansas.

<img class="styles__noscript__2rw2y" src="https://dsx.weather.com/util/image/w/1may18-tor-reports.jpg?v=at&w=485&h=273&api=7db9fe61-7414-47b5-9871-e17d87b8b6a0" srcset="https://dsx.weather.com/util/image/w/1may18-tor-reports.jpg?v=at&w=485&h=273&api=7db9fe61-7414-47b5-9871-e17d87b8b6a0 400w, https://dsx.weather.com/util/image/w/1may18-tor-reports.jpg?v=ap&w=980&h=551&api=7db9fe61-7414-47b5-9871-e17d87b8b6a0 800w" > Preliminary reports of tornadoes on May 1, 2018. These preliminary reports may include multiple reports of the same tornado and, therefore, do not necessarily correspond to the actual number of tornadoes that occurred. (NOAA/NWS/SPC) (NOAA/NWS/SPC)

A large EF3 tornado in Ottawa County, Kansas, damaged homes and outbuildings near Tescott and to the west of Minneapolis, Kansas. The tornado produced winds of 140 mph and was on the ground for more than 14 miles. Several power poles were snapped at the ground near Culver by this tornado that was captured by multiple storm chasers.

(MORE: Weird Tornado Déjà Vu Tuesday Near Bennington, Kansas )

A muti-vortex tornado in Cloud County, Kansas, rated EF1 by the National Weather Service, damaged several farmsteads and trees, and snapped power poles as it crossed U.S. 81 south of Concordia.

One tornado touched down briefly in Gage County, Nebraska, to the northeast of Odell, near the Kansas state line.

(Tuesday Severe Impacts: Severe Weather Ramps Up in Plains, Midwest )

An EF0 tornado near Doniphan, Nebraska , just south of Grand Island, damaged some homes and at least one outbuilding on the city's south side, according to a National Weather Service damage survey.

Hail as large as 4 inches in diameter was reported near Octavia, Nebraska, and was sampled by the NOAA National Severe Storms Laboratory mesonet near Susank, Kansas.

Now is a good time to refresh or develop your plan to stay safe during severe weather. We have tips on what to do if you're in a home, mobile home or vehicle.