On the map: every storm report logged this day.
On the map
Storm reports for May 1, 2017
On May 1, 2017, 2 hail, 311 damaging-wind and 15 tornado reports were logged across 9 states.
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On May 1, 2017, 2 hail, 311 damaging-wind and 15 tornado reports were logged across 9 states. The largest hail reported was 1.50″ (ping pong ball size) in Forest 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 | 2 | 111 | 12 | 1.50″ |
| NY | 0 | 117 | 0 | – |
| NC | 0 | 34 | 1 | – |
| OH | 0 | 32 | 0 | – |
| VA | 0 | 10 | 0 | – |
| WV | 0 | 3 | 0 | – |
| SC | 0 | 3 | 0 | – |
| GA | 0 | 0 | 2 | – |
| MD | 0 | 1 | 0 | – |
Cities with hail reported within 5 miles
| City | Population | Largest report |
|---|---|---|
| Kane, PA | 3,489 | 1.00″ |
Hail reports (2)
| Time (UTC) | Size | Location |
|---|---|---|
| 19:42 | 1.50″ | Forest County, PA |
| 20:03 | 1.00″ | McKean County, PA |
Damage, injuries and deaths
National Weather Service offices recorded about $2.9 million in property damage and 1 injury from hail, thunderstorm wind and tornadoes across the US on this storm day (330 events in 9 states). Injuries and deaths are those the events caused directly.
| County | Events | Injuries | Deaths | Property damage |
|---|---|---|---|---|
| Centre County, PA | 10 | 1 | 0 | $268,000 |
| Mahoning County, OH | 3 | 0 | 0 | $410,000 |
| Trumbull County, OH | 1 | 0 | 0 | $150,000 |
| Chenango County, NY | 6 | 0 | 0 | $145,000 |
| St. Lawrence County, NY | 3 | 0 | 0 | $125,000 |
| Erie County, PA | 4 | 0 | 0 | $115,000 |
| Catawba County, NC | 2 | 0 | 0 | $110,000 |
| Allegany County, NY | 6 | 0 | 0 | $80,000 |
| Clarion County, PA | 8 | 0 | 0 | $76,000 |
| Erie County, NY | 4 | 0 | 0 | $65,000 |
| Orleans County, NY | 4 | 0 | 0 | $55,000 |
| Franklin County, NY | 6 | 0 | 0 | $50,000 |
What the National Weather Service wrote
- Centre County, PA (near Smullton) · Tornado EF1 · $200,000 · 1 injury
“An EF1 tornado touched down near a wooden pallet factory on the outskirts of town and moved rapidly northeastward before lifting just northeast of the town. Damage occurred to several dozen homes and outbuildings across Rebersburg. Several dozen trees were either snapped or uprooted.” - Mahoning County, OH (near Struthers) · Thunderstorm wind 58 mph · $250,000
“Thunderstorm downburst winds downed several large trees along Midlothian Boulevard. A vehicle parked along Midlothian Boulevard just west of Market Street was crushed by a tree. Several trees were also reported down along Hillman Street.” - Mahoning County, OH (near Boardman) · Thunderstorm wind 81 mph · $150,000
“Thunderstorm downburst winds estimated to be as much as 70 mph downed many trees in Boardman. Some of the worst damage was on Cherrywood Drive on the northwest side of the city. A home in the that neighborhood was damaged by a fallen tree.” - Trumbull County, OH (near Mc Donald) · Thunderstorm wind 70 mph · $150,000
“A thunderstorm downburst produced wind gusts as high as 70 mph in the McDonald area. Over two dozen trees were toppled in the city. A delivery van was crushed by a fallen tree and at least two homes were damaged by fallen trees. Several streets were blocked and scattered power outages reported.” - Chenango County, NY (near Norwich Eaton Arpt) · Thunderstorm wind 101 mph · $100,000
“A thunderstorm moved across the region and became severe. This thunderstorm produced severe winds and knocked over trees. The National Weather Service in Binghamton, New York conducted a storm survey and found microburst winds ranging between 90 to 100 mph.” - Catawba County, NC (near Duan) · Thunderstorm wind 75 mph · $100,000
“Storm Survey team found an area of downburst damage between Maiden and Catawba. Numerous trees were blown down through the area, with some falling on homes. Two small areas of tornadic damage were found embedded within the larger damage path.”
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 1, 2017
National Weather Service survey teams mapped 2 tornado paths from this storm day (2 EF0), 1 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 | – | 0.3 mi | 25 yd | 0 / 0 | 19:57–19:58 UTC | NWS Greenville-Spartanburg |
| EF0 | 85 mph | 0.2 mi | 25 yd | 0 / 0 | 20:01–20:02 UTC | NWS Greenville-Spartanburg |
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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