On the map: every storm report logged this day.
On the map
Storm reports for September 21, 2016
On September 21, 2016, 28 hail, 25 damaging-wind and 1 tornado reports were logged across 5 states.
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← Sep 20, 2016 All 2016 storm days · September 2016 Sep 22, 2016 →
Other storms on September 21 →
On September 21, 2016, 28 hail, 25 damaging-wind and 1 tornado reports were logged across 5 states. The largest hail reported was 1.50″ (ping pong ball size) in Floyd 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 | 8 | 16 | 1 | 1.50″ |
| MN | 12 | 2 | 0 | 1.00″ |
| WI | 8 | 2 | 0 | 1.25″ |
| UT | 0 | 4 | 0 | – |
| IL | 0 | 1 | 0 | – |
Cities with hail reported within 5 miles
| City | Population | Largest report |
|---|---|---|
| Roseville, MN | 35,637 | 1.00″ |
| Shoreview, MN | 26,939 | 1.00″ |
| White Bear Lake, MN | 23,479 | 1.00″ |
| Lino Lakes, MN | 22,774 | 1.00″ |
| New Brighton, MN | 22,374 | 1.00″ |
| Vadnais Heights, MN | 13,108 | 1.00″ |
| Mounds View, MN | 12,841 | 1.00″ |
| DeForest, WI | 12,260 | 1.00″ |
| Little Canada, MN | 10,590 | 1.00″ |
| Windsor, WI | 10,005 | 1.00″ |
| Arden Hills, MN | 9,490 | 1.00″ |
| Delano, MN | 7,513 | 1.00″ |
| North Oaks, MN | 5,232 | 1.00″ |
| Circle Pines, MN | 4,944 | 1.00″ |
| Rockford, MN | 4,796 | 1.00″ |
| Bloomer, WI | 3,646 | 1.00″ |
| Lexington, MN | 3,062 | 1.00″ |
| Greenfield, MN | 2,908 | 1.00″ |
| Dubuque, IA | 58,987 | 0.88″ |
| Fridley, MN | 30,679 | 0.88″ |
| Columbia Heights, MN | 22,358 | 0.88″ |
| St. Anthony, MN | 9,993 | 0.88″ |
| Spring Lake Park, MN | 7,083 | 0.88″ |
| Asbury, IA | 6,051 | 0.88″ |
| Hanover, MN | 4,229 | 0.88″ |
Hail reports (28)
| Time (UTC) | Size | Location |
|---|---|---|
| 22:06 | 1.50″ | Floyd County, IA |
| 17:40 | 1.25″ | Trempealeau County, WI |
| 18:10 | 1.25″ | Chippewa County, WI |
| 20:45 | 1.25″ | Dunn County, WI |
| 22:50 | 1.25″ | Cerro Gordo County, IA |
| 17:45 | 1.00″ | Chippewa County, WI |
| 20:32 | 1.00″ | Cerro Gordo County, IA |
| 21:25 | 1.00″ | Ramsey County, MN |
| 21:30 | 1.00″ | Ramsey County, MN |
| 22:10 | 1.00″ | Dane County, WI |
| 22:28 | 1.00″ | Dunn County, WI |
| 00:07 | 1.00″ | Wright County, MN |
| 00:11 | 1.00″ | Butler County, IA |
| 00:19 | 1.00″ | Wright County, MN |
| 00:49 | 1.00″ | Butler County, IA |
| 13:45 | 0.88″ | Dubuque County, IA |
| 16:55 | 0.88″ | Mower County, MN |
| 17:44 | 0.88″ | Trempealeau County, WI |
| 17:44 | 0.88″ | Winona County, MN |
| 21:23 | 0.88″ | Ramsey County, MN |
| 22:58 | 0.88″ | Juneau County, WI |
| 23:28 | 0.88″ | Hennepin County, MN |
| 13:44 | 0.75″ | Dubuque County, IA |
| 16:50 | 0.75″ | Olmsted County, MN |
| 17:52 | 0.75″ | Winona County, MN |
| 21:36 | 0.75″ | Aitkin County, MN |
| 23:25 | 0.75″ | Wright County, MN |
| 23:50 | 0.75″ | Cerro Gordo County, IA |
Damage, injuries and deaths
National Weather Service offices recorded about $161,000 in property damage and $3,000 in crop damage from hail, thunderstorm wind and tornadoes across the US on this storm day (54 events in 5 states). Injuries and deaths are those the events caused directly.
| County | Events | Injuries | Deaths | Property damage |
|---|---|---|---|---|
| Floyd County, IA | 6 | 0 | 0 | $67,000 |
| Butler County, IA | 2 | 0 | 0 | $50,000 |
| Knox County, IL | 1 | 0 | 0 | $18,000 |
| Grundy County, IA | 1 | 0 | 0 | $15,000 |
| Cache County, UT | 1 | 0 | 0 | $10,000 |
| Cerro Gordo County, IA | 1 | 0 | 0 | $1,000 |
What the National Weather Service wrote
- Floyd County, IA (near Marble Rock) · Thunderstorm wind 60 mph · $50,000
“Machine sheds were blown down and destroyed southeast of Marble Rock.” - Butler County, IA (near Greene) · Thunderstorm wind 64 mph · $30,000
“Emergency manager reported trees down on roofs and power lines. Extent of damage unknown at the time. Time estimated from radar.” - Butler County, IA (near Greene) · Thunderstorm wind 64 mph · $20,000
“Emergency manager reported widespread tree damage throughout town, including several trees on houses.” - Knox County, IL (near Henderson) · Thunderstorm wind 60 mph · $18,000
“Several 1-foot diameter trees were blown down and shingles were torn off a roof in Henderson.” - Grundy County, IA (near Wellsburg) · Thunderstorm wind 60 mph · $15,000
“Public reported damage to several large trees. Time estimated.” - Cache County, UT (near Logan) · Thunderstorm wind 58 mph · $10,000
“Strong thunderstorm winds in Logan knocked over a tree that was a foot in diameter and approximately 50 feet tall. This tree fell onto a house and knocked out power in a 3 block radius.”
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 September 21, 2016
National Weather Service survey teams mapped 1 tornado path from this storm day (1 EF0), 2 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 |
|---|---|---|---|---|---|---|
| EF0 | 70 mph | 1.6 mi | 50 yd | 0 / 0 | 23:32–23:35 UTC | NWS La Crosse |
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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