On the map: every storm report logged this day.
On the map
Storm reports for May 17, 2017
On May 17, 2017, 88 hail, 299 damaging-wind and 15 tornado reports were logged across 10 states.
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· As you type, the text is sent to Google to suggest addresses.IndependentNot affiliated with NOAA or the National Weather Service. Source: NOAA Storm Prediction Center storm reports. Data through November 6, 2026. Methodology
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On May 17, 2017, 88 hail, 299 damaging-wind and 15 tornado reports were logged across 10 states. The largest hail reported was 2.00″ (hen egg size) in Henry County, IA.
Storm day runs 7 a.m. to 7 a.m. Eastern (12:00–12:00 UTC), the convention the Storm Prediction Center uses. Radar hail estimates start October 2019.
Storm reports by state
| State | Hail | Wind | Tornado | Largest hail |
|---|---|---|---|---|
| IA | 40 | 152 | 6 | 2.00″ |
| WI | 15 | 96 | 1 | 1.00″ |
| IL | 12 | 39 | 5 | 1.75″ |
| MN | 12 | 7 | 2 | 1.75″ |
| NE | 4 | 0 | 1 | 1.00″ |
| CO | 3 | 0 | 0 | 0.88″ |
| KS | 1 | 1 | 0 | 1.25″ |
| MI | 1 | 1 | 0 | 0.88″ |
| MO | 0 | 2 | 0 | – |
| SD | 0 | 1 | 0 | – |
Cities with hail reported within 5 miles
| City | Population | Largest report |
|---|---|---|
| Mount Pleasant, IA | 8,509 | 2.00″ |
| Albert Lea, MN | 18,159 | 1.75″ |
| Winnebago, IL | 2,907 | 1.75″ |
| Poplar Grove, IL | 5,165 | 1.50″ |
| Rockford, IL | 147,486 | 1.00″ |
| Peoria, IL | 111,696 | 1.00″ |
| West Des Moines, IA | 73,664 | 1.00″ |
| Waterloo, IA | 67,477 | 1.00″ |
| Janesville, WI | 66,428 | 1.00″ |
| Urbandale, IA | 47,759 | 1.00″ |
| Waukee, IA | 34,420 | 1.00″ |
| Johnston, IA | 25,022 | 1.00″ |
| Muscatine, IA | 23,298 | 1.00″ |
| Clive, IA | 19,508 | 1.00″ |
| Grimes, IA | 17,266 | 1.00″ |
| Fairmont, MN | 10,176 | 1.00″ |
| Portage, WI | 9,975 | 1.00″ |
| Lake Geneva, WI | 8,691 | 1.00″ |
| Charles City, IA | 7,081 | 1.00″ |
| Adel, IA | 6,763 | 1.00″ |
| Polk City, IA | 6,430 | 1.00″ |
| Waupaca, WI | 6,231 | 1.00″ |
| Waterford, WI | 5,885 | 1.00″ |
| Peoria Heights, IL | 5,802 | 1.00″ |
| Colona, IL | 4,960 | 1.00″ |
Hail reports (88)
| Time (UTC) | Size | Location |
|---|---|---|
| 23:37 | 2.00″ | Henry County, IA |
| 20:05 | 1.75″ | Freeborn County, MN |
| 21:20 | 1.75″ | Henry County, IA |
| 21:45 | 1.75″ | Louisa County, IA |
| 22:23 | 1.75″ | Muscatine County, IA |
| 22:42 | 1.75″ | Jefferson County, IA |
| 23:17 | 1.75″ | Winnebago County, IL |
| 23:37 | 1.75″ | Henry County, IA |
| 23:40 | 1.75″ | Henry County, IA |
| 00:40 | 1.75″ | Louisa County, IA |
| 23:46 | 1.50″ | Washington County, IA |
| 00:54 | 1.50″ | Wabasha County, MN |
| 03:25 | 1.50″ | Boone County, IL |
| 03:44 | 1.50″ | Peoria County, IL |
| 12:02 | 1.25″ | Lincoln County, KS |
| 20:00 | 1.25″ | Freeborn County, MN |
| 21:10 | 1.25″ | Freeborn County, MN |
| 21:28 | 1.25″ | Henry County, IA |
| 19:14 | 1.00″ | Douglas County, NE |
| 19:34 | 1.00″ | Douglas County, NE |
| 19:48 | 1.00″ | Dallas County, IA |
| 19:55 | 1.00″ | Dallas County, IA |
| 20:03 | 1.00″ | Dallas County, IA |
| 20:10 | 1.00″ | Polk County, IA |
| 20:15 | 1.00″ | Black Hawk County, IA |
| 20:16 | 1.00″ | Columbia County, WI |
| 20:18 | 1.00″ | Polk County, IA |
| 20:30 | 1.00″ | Martin County, MN |
| 20:30 | 1.00″ | Martin County, MN |
| 21:15 | 1.00″ | Monroe County, IA |
| 21:21 | 1.00″ | Dubuque County, IA |
| 21:29 | 1.00″ | Houston County, MN |
| 21:29 | 1.00″ | Monroe County, IA |
| 21:47 | 1.00″ | Winona County, MN |
| 21:52 | 1.00″ | Louisa County, IA |
| 21:55 | 1.00″ | Winona County, MN |
| 22:05 | 1.00″ | Floyd County, IA |
| 22:11 | 1.00″ | Muscatine County, IA |
| 22:40 | 1.00″ | Scott County, IA |
| 22:49 | 1.00″ | Wapello County, IA |
| 22:52 | 1.00″ | Iowa County, IA |
| 23:16 | 1.00″ | Van Buren County, IA |
| 23:45 | 1.00″ | Rock County, WI |
| 23:48 | 1.00″ | Wood County, WI |
| 23:51 | 1.00″ | Rock County, WI |
| 23:52 | 1.00″ | Wood County, WI |
| 00:15 | 1.00″ | Racine County, WI |
| 00:31 | 1.00″ | Houston County, MN |
| 00:34 | 1.00″ | Muscatine County, IA |
| 00:54 | 1.00″ | Scott County, IA |
| 01:22 | 1.00″ | Henry County, IL |
| 01:28 | 1.00″ | Waupaca County, WI |
| 02:05 | 1.00″ | Knox County, IL |
| 03:09 | 1.00″ | Winnebago County, IL |
| 03:38 | 1.00″ | Peoria County, IL |
| 03:45 | 1.00″ | Peoria County, IL |
| 03:45 | 1.00″ | Woodford County, IL |
| 03:56 | 1.00″ | Walworth County, WI |
| 19:50 | 0.88″ | Dallas County, IA |
| 20:08 | 0.88″ | Polk County, IA |
| 20:22 | 0.88″ | Polk County, IA |
| 21:20 | 0.88″ | Monroe County, IA |
| 22:14 | 0.88″ | Muscatine County, IA |
| 22:30 | 0.88″ | Thurston County, NE |
| 23:30 | 0.88″ | Delta County, MI |
| 23:45 | 0.88″ | Clark County, WI |
| 00:00 | 0.88″ | Fillmore County, MN |
| 01:30 | 0.88″ | Henry County, IL |
| 02:05 | 0.88″ | Adams County, WI |
| 02:40 | 0.88″ | Adams County, CO |
| 02:42 | 0.88″ | Adams County, CO |
| 14:15 | 0.75″ | Scott County, IA |
| 18:27 | 0.75″ | Saline County, NE |
| 19:35 | 0.75″ | Madison County, IA |
| 20:18 | 0.75″ | Columbia County, WI |
| 20:50 | 0.75″ | Story County, IA |
| 21:18 | 0.75″ | Green Lake County, WI |
| 21:23 | 0.75″ | Winona County, MN |
| 21:33 | 0.75″ | Allamakee County, IA |
| 21:52 | 0.75″ | Osceola County, IA |
| 22:39 | 0.75″ | Richland County, WI |
| 22:45 | 0.75″ | Monroe County, WI |
| 23:48 | 0.75″ | Johnson County, IA |
| 00:00 | 0.75″ | Wood County, WI |
| 01:25 | 0.75″ | Boulder County, CO |
| 01:50 | 0.75″ | Clinton County, IA |
| 03:15 | 0.75″ | Fulton County, IL |
| 03:39 | 0.75″ | Peoria County, IL |
Damage, injuries and deaths
National Weather Service offices recorded about $2.9 million in property damage, 2 injuries and 1 death from hail, thunderstorm wind and tornadoes across the US on this storm day (405 events in 10 states). Injuries and deaths are those the events caused directly.
| County | Events | Injuries | Deaths | Property damage |
|---|---|---|---|---|
| Butler County, IA | 3 | 1 | 1 | $170,000 |
| Henry County, IL | 3 | 1 | 0 | $65,000 |
| Grant County, WI | 3 | 0 | 0 | $219,000 |
| Trempealeau County, WI | 7 | 0 | 0 | $182,000 |
| Marshall County, IA | 5 | 0 | 0 | $142,000 |
| Clayton County, IA | 3 | 0 | 0 | $131,000 |
| Polk County, IA | 3 | 0 | 0 | $115,000 |
| Walworth County, WI | 2 | 0 | 0 | $115,000 |
| Dallas County, IA | 3 | 0 | 0 | $110,000 |
| Marshall County, IL | 2 | 0 | 0 | $105,000 |
| Boone County, IL | 1 | 0 | 0 | $100,000 |
| Eau Claire County, WI | 1 | 0 | 0 | $100,000 |
What the National Weather Service wrote
- Butler County, IA (near Parkersburg) · Thunderstorm wind 75 mph · $60,000 · 1 death
“Coop observer reported very high winds estimated at over 70 mph. Power reported out in Parkersburg, semi overturned on Highway 57 resulting in one fatality, and numerous tree limbs down on roads. A 3 foot diameter tree also downed in Parkersburg.” - Butler County, IA (near Aplington) · Thunderstorm wind 75 mph · $100,000 · 1 injury
“A machine shed was blown down on top of a person, who was extricated and taken to the hospital. A building in Greene collapsed and caused a gas leak. Widespread tree damage and numerous trees down, power lines down and building damage throughout the western half of the county.” - Henry County, IL (near Galva) · Tornado EF2 · $40,000 · 1 injury
“Tornado was rated EF-2 with peak winds of 120 mph, a path length of 1.29 miles and a max width 50 yards. Damage was to two snapped power poles, one home with significant damage to shingles. Another house had had roof completely removed and blew out doors with one minor injury at this location.” - Grant County, WI (near Lancaster) · Thunderstorm wind 70 mph · $175,000
“An estimated 70 mph wind gust occurred in Lancaster. Several barns and outbuildings were blown down and destroyed across the southwest half of Grant County as the line storms moved across. Lots of power lines were also down.” - Clayton County, IA (near Monona Muni Arpt) · Thunderstorm wind 60 mph · $110,000
“A machine shed was destroyed and a house damaged east of Monona.” - Shawano County, WI (near Shawano Lake) · Thunderstorm wind 81 mph · $100,000
“Thunderstorm winds downed at least two dozen trees, causing damage to eight houses on the north shore of Shawano Lake.”
Event narratives from NWS Storm Data, shortened. Up to six per day, chosen by deaths, injuries, damage and size.
Source: NOAA National Centers for Environmental Information (NCEI), Storm Events Database, as entered by National Weather Service offices; data through July 31, 2026. Damage is in dollars of the year, not adjusted for inflation.
NWS Tornado Damage Surveys for May 17, 2017
National Weather Service survey teams mapped 10 tornado paths from this storm day (1 EF2, 8 EF1, 1 EF0), 36 miles in all. The map above draws each surveyed path as the NWS mapped it, colored by the EF rating of each stretch, in place of the straight start-to-end line.
| Rating | Peak wind | Path length | Max width | Deaths / injuries | On the ground | Surveyed by |
|---|---|---|---|---|---|---|
| EF2 | 120 mph | 1.3 mi | 50 yd | 0 / 1 | 02:20–02:21 UTC | NWS Quad Cities |
| EF1 | 95 mph | 10.3 mi | 100 yd | 0 / 0 | 03:21–03:34 UTC | NWS Chicago |
| EF1 | 105 mph | 8.1 mi | 150 yd | 0 / 0 | 01:00–01:09 UTC | NWS Quad Cities |
| EF1 | 110 mph | 6.0 mi | 40 yd | 0 / 0 | 23:36–23:42 UTC | NWS Quad Cities |
| EF1 | 110 mph | 3.3 mi | 25 yd | 0 / 0 | 21:16–21:20 UTC | NWS Quad Cities |
| EF1 | 95 mph | 2.1 mi | 50 yd | 0 / 0 | 01:44–01:47 UTC | NWS Quad Cities |
| EF1 | 100 mph | 2.1 mi | 25 yd | 0 / 0 | 00:44–00:46 UTC | NWS Quad Cities |
| EF1 | 95 mph | 1.4 mi | 250 yd | 0 / 0 | 22:21–22:25 UTC | NWS La Crosse |
| EF1 | 110 mph | 0.4 mi | 50 yd | 0 / 0 | 20:48–20:50 UTC | NWS Omaha |
| EF0 | 70 mph | 0.7 mi | 25 yd | 0 / 0 | 22:04–22:05 UTC | NWS Quad Cities |
Source: NOAA National Weather Service Damage Assessment Toolkit (DAT): the tornado paths and EF-rating zones NWS survey teams mapped after each storm. Survey data are preliminary and can be revised; NOAA's official record is Storm Data (NCEI). Paths are simplified to about 30 m. Times are when the tornado was on the ground, in UTC.
Guides: What radar-estimated hail (MESH) is and isn't · Storm reports: preliminary vs final
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