On the map: every storm report logged this day.
On the map
Storm reports for April 20, 2017
On April 20, 2017, 58 hail, 26 damaging-wind and 2 tornado reports were logged across 12 states.
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On April 20, 2017, 58 hail, 26 damaging-wind and 2 tornado reports were logged across 12 states. The largest hail reported was 2.00″ (hen egg size) in Westmoreland County, PA.
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 |
|---|---|---|---|---|
| PA | 18 | 7 | 1 | 2.00″ |
| OK | 12 | 3 | 0 | 2.00″ |
| TX | 14 | 0 | 0 | 2.00″ |
| IN | 4 | 2 | 1 | 0.88″ |
| MI | 3 | 1 | 0 | 1.50″ |
| OH | 4 | 0 | 0 | 1.50″ |
| MO | 1 | 3 | 0 | 0.75″ |
| AR | 0 | 4 | 0 | – |
| MD | 0 | 3 | 0 | – |
| WV | 0 | 3 | 0 | – |
| VA | 1 | 0 | 0 | 1.00″ |
| NM | 1 | 0 | 0 | 1.00″ |
Cities with hail reported within 5 miles
| City | Population | Largest report |
|---|---|---|
| Plum, PA | 26,420 | 2.00″ |
| Weatherford, OK | 12,047 | 2.00″ |
| New Kensington, PA | 11,877 | 2.00″ |
| Lower Burrell, PA | 11,542 | 2.00″ |
| Oakmont, PA | 6,628 | 2.00″ |
| Arnold, PA | 4,657 | 2.00″ |
| Tarentum, PA | 4,183 | 2.00″ |
| Springdale, PA | 3,272 | 2.00″ |
| Brackenridge, PA | 3,125 | 2.00″ |
| Elgin, OK | 3,613 | 1.75″ |
| Perryton, TX | 8,219 | 1.50″ |
| Three Rivers, MI | 7,958 | 1.50″ |
| New Cordell, OK | 2,744 | 1.50″ |
| Edmond, OK | 99,040 | 1.25″ |
| Dumas, TX | 14,834 | 1.00″ |
| Dalhart, TX | 8,443 | 1.00″ |
| Corry, PA | 6,065 | 1.00″ |
| Ottawa, OH | 4,422 | 1.00″ |
| Timberville, VA | 3,104 | 1.00″ |
| Union City, PA | 2,857 | 1.00″ |
| Martinsville, IN | 11,952 | 0.88″ |
| Huntertown, IN | 11,481 | 0.75″ |
| Edinboro, PA | 5,814 | 0.75″ |
| Pittsboro, IN | 4,288 | 0.75″ |
| Leo-Cedarville, IN | 3,761 | 0.75″ |
Hail reports (58)
| Time (UTC) | Size | Location |
|---|---|---|
| 16:43 | 2.00″ | Westmoreland County, PA |
| 19:30 | 2.00″ | Clarion County, PA |
| 05:10 | 2.00″ | Wilbarger County, TX |
| 05:20 | 2.00″ | Custer County, OK |
| 19:25 | 1.75″ | Clarion County, PA |
| 19:58 | 1.75″ | Jefferson County, PA |
| 05:08 | 1.75″ | Custer County, OK |
| 05:45 | 1.75″ | Comanche County, OK |
| 05:57 | 1.75″ | Comanche County, OK |
| 17:08 | 1.50″ | Westmoreland County, PA |
| 18:57 | 1.50″ | Clarion County, PA |
| 20:12 | 1.50″ | St. Joseph County, MI |
| 21:10 | 1.50″ | Putnam County, OH |
| 03:29 | 1.50″ | Hall County, TX |
| 04:45 | 1.50″ | Washita County, OK |
| 09:35 | 1.50″ | Hutchinson County, TX |
| 09:47 | 1.50″ | Ochiltree County, TX |
| 16:41 | 1.25″ | Westmoreland County, PA |
| 16:46 | 1.25″ | Allegheny County, PA |
| 17:00 | 1.25″ | Allegheny County, PA |
| 17:15 | 1.25″ | Westmoreland County, PA |
| 18:48 | 1.25″ | Armstrong County, PA |
| 05:57 | 1.25″ | Comanche County, OK |
| 06:14 | 1.25″ | Comanche County, OK |
| 07:35 | 1.25″ | Oklahoma County, OK |
| 10:15 | 1.25″ | Hutchinson County, TX |
| 16:45 | 1.00″ | Westmoreland County, PA |
| 16:50 | 1.00″ | Westmoreland County, PA |
| 17:03 | 1.00″ | Westmoreland County, PA |
| 18:08 | 1.00″ | Calhoun County, MI |
| 19:13 | 1.00″ | Armstrong County, PA |
| 20:55 | 1.00″ | Rockingham County, VA |
| 21:12 | 1.00″ | Putnam County, OH |
| 21:35 | 1.00″ | Putnam County, OH |
| 21:35 | 1.00″ | Hancock County, OH |
| 22:49 | 1.00″ | Erie County, PA |
| 23:10 | 1.00″ | Erie County, PA |
| 04:50 | 1.00″ | Union County, NM |
| 05:12 | 1.00″ | Custer County, OK |
| 06:13 | 1.00″ | Comanche County, OK |
| 06:21 | 1.00″ | Comanche County, OK |
| 06:24 | 1.00″ | Archer County, TX |
| 07:45 | 1.00″ | Montague County, TX |
| 08:00 | 1.00″ | Hartley County, TX |
| 09:23 | 1.00″ | Moore County, TX |
| 09:29 | 1.00″ | Custer County, OK |
| 09:47 | 1.00″ | Ochiltree County, TX |
| 09:52 | 1.00″ | Ochiltree County, TX |
| 09:56 | 1.00″ | Lipscomb County, TX |
| 10:25 | 1.00″ | Ochiltree County, TX |
| 10:28 | 1.00″ | Hutchinson County, TX |
| 20:20 | 0.88″ | St. Joseph County, MI |
| 21:43 | 0.88″ | Morgan County, IN |
| 18:54 | 0.75″ | Allen County, IN |
| 20:38 | 0.75″ | Hendricks County, IN |
| 21:55 | 0.75″ | Greene County, IN |
| 22:05 | 0.75″ | Ripley County, MO |
| 22:17 | 0.75″ | Erie County, PA |
Damage, injuries and deaths
National Weather Service offices recorded about $164,000 in property damage from hail, thunderstorm wind and tornadoes across the US on this storm day (86 events in 12 states). Injuries and deaths are those the events caused directly.
| County | Events | Injuries | Deaths | Property damage |
|---|---|---|---|---|
| Ripley County, MO | 2 | 0 | 0 | $37,000 |
| Decatur County, IN | 1 | 0 | 0 | $35,000 |
| Putnam County, IN | 1 | 0 | 0 | $15,000 |
| Westmoreland County, PA | 5 | 0 | 0 | $13,000 |
| Sebastian County, AR | 2 | 0 | 0 | $12,000 |
| Butler County, MO | 1 | 0 | 0 | $10,000 |
| Sequoyah County, OK | 1 | 0 | 0 | $10,000 |
| Clarion County, PA | 1 | 0 | 0 | $10,000 |
| Warren County, PA | 1 | 0 | 0 | $10,000 |
| Elk County, PA | 1 | 0 | 0 | $7,000 |
| Preston County, WV | 3 | 0 | 0 | $3,000 |
| Butler County, PA | 1 | 0 | 0 | $2,000 |
What the National Weather Service wrote
- Ripley County, MO (near Doniphan) · Thunderstorm wind 64 mph · $35,000
“Moderate damage occurred to three homes, mostly due to trees falling onto roofs. Another home received minor damage due to a power line weatherhead being pulled from the structure by a downed tree. Two vehicles were damaged by falling trees.” - Decatur County, IN (near Millhousen) · Tornado EF1 · $35,000
“An EF-1 tornado touched down around 7:35 PM EDT approximately 2 miles northeast of Millhousen in southern Decatur County.||The tornado as on the ground intermittently along its path and caused damage to a few farm outbuildings, destroying one of them. Also, numerous trees were uprooted or snapped.” - Putnam County, IN (near Cloverdale) · Thunderstorm wind 60 mph · $15,000
“Three or four tree were blown down on Down Boy Way in Cloverdale. One of the trees is dead and fell into a mobile home, coming to rest halfway to the floor.” - Sequoyah County, OK (near Roland) · Thunderstorm wind 75 mph · $10,000
“Strong thunderstorm wind damaged the roof of a building, and blew down trees.” - Sebastian County, AR (near Barling) · Thunderstorm wind 70 mph · $10,000
“Strong thunderstorm wind blew down a large tree onto a camper trailer. Several people were trapped inside the trailer.” - Butler County, MO (near Neelyville) · Thunderstorm wind 60 mph · $10,000
“A semi-tractor trailer was overturned on U.S. Highway 67 about one mile north of the Arkansas-Missouri state line. The driver was not injured.”
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 April 20, 2017
National Weather Service survey teams mapped 1 tornado path from this storm day (1 EF1), 3 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 |
|---|---|---|---|---|---|---|
| EF1 | 95 mph | 2.8 mi | 40 yd | 0 / 0 | 23:35–23:39 UTC | NWS Indianapolis |
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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