Tornadoes are the most concentrated roof-destroying force in the United States. Unlike hail, which chips and bruises shingles across wide zones, and unlike hurricane wind, which spreads damage across coastal counties, a tornado applies extreme wind loads along a narrow path and routinely removes roof coverings, roof decking, and entire roof structures within seconds. This report aggregates verified tornado data from the NOAA/NWS Storm Prediction Center, the National Weather Service, and the Insurance Information Institute (Triple-I) to show how many tornadoes strike each year, where they concentrate by state, and at what wind speeds roofs begin to fail.
All figures below are traced to the primary or institutional source that published them. Derived numbers are labeled as Roofing Brief calculations with their inputs. This report is tornado-specific and does not restate the hail-claim or regional-wind data published separately by The Roofing Brief.
Executive summary
- The United States recorded 1,796 confirmed tornadoes in 2024, the second-highest annual total since modern record-keeping began in 1950, trailing only 2004. Source: National Weather Service, July 2025.
- The long-term U.S. average is roughly 1,233 tornadoes per year over 1996 to 2020, meaning 2024 ran about 46% above the modern average (Roofing Brief calculation). Source: Storm Prediction Center via ustornadoes.com.
- Roof damage begins at EF1 intensity (86 to 110 mph), where roof surfaces are peeled off, and roofs are torn from frame houses at EF2 (111 to 135 mph). Source: National Weather Service, Norman OK.
- About 77% of U.S. tornadoes are weak (EF0 to EF1), roughly 14% are EF2, and only about 2% are violent (EF4 to EF5). Source: aggregated NOAA-based intensity distributions.
- Texas averages 151 tornadoes per year and Kansas 91, the two highest state averages for 1989 to 2019. Source: NOAA NCEI Storm Events Database via FOX Weather.
- Tornadoes, hail, and severe thunderstorm wind together produced $51 billion in U.S. insured losses in 2025, the third consecutive year above $50 billion. Source: Insurance Information Institute, April 2026.
- A record 300 tornadoes in March 2025 alone generated $8.4 billion in insured losses, an average near $28 million per tornado for that outbreak (Roofing Brief calculation). Source: Insurance Information Institute.
- In 2024, 33 of 54 direct tornado deaths (61%) occurred in manufactured or mobile homes, structures whose roofs and anchoring fail at lower wind speeds than site-built homes (Roofing Brief calculation on NWS data).
Key findings
- The U.S. recorded 1,796 confirmed tornadoes in 2024, the second-most on record and only 21 fewer than the 2004 record of 1,817. Source: National Weather Service, July 2025.
- The top five tornado years on record (1950 to 2024) are 2004 (1,817), 2024 (1,796), 2011 (1,691), 2008 (1,689), and 2019 (1,517). Source: National Weather Service, July 2025.
- The 2011 season was the deadliest on record with 1,691 tornadoes and 553 deaths, driven largely by the April 22 to 28 outbreak across 13 states. Source: Insurance Information Institute, citing the Storm Prediction Center.
- The U.S. averaged about 1,233 tornadoes per year over 1996 to 2020 and about 1,333 per year over 1989 to 2019, depending on the reference period. Source: Storm Prediction Center; NOAA NCEI via FOX Weather.
- Texas (151), Kansas (91), Oklahoma (68), Florida (60), and Nebraska (55) hold the five highest average annual tornado counts for 1989 to 2019. Source: NOAA NCEI Storm Events Database via FOX Weather.
- Illinois set a state record with 142 tornadoes in 2024, breaking its prior record of 125 set in 2006. Source: National Weather Service, July 2025.
- Oklahoma set a state record with 152 tornadoes in 2024, surpassing its prior record of 148 from 2019. Source: National Weather Service, July 2025.
- Roof surfaces begin peeling off at EF1 intensity (86 to 110 mph) and roofs are torn from frame houses at EF2 intensity (111 to 135 mph). Source: National Weather Service, Norman OK.
- About 77% of U.S. tornadoes are rated EF0 or EF1, with EF0 accounting for roughly 40.1% and EF1 for roughly 31.8% of all tornadoes. Source: aggregated NOAA-based intensity distributions.
- Violent tornadoes (EF4 and EF5) make up only about 2% of all recorded tornadoes, and EF5 events about 0.1%. Source: aggregated NOAA-based intensity distributions.
- Tornadoes, hail, and severe thunderstorm winds generated $51 billion in U.S. insured losses in 2025, with total economic damages above $68 billion, ranking 2025 the third costliest severe-convective-storm year on record. Source: Insurance Information Institute, April 2026, citing Gallagher Re.
- A record 300 tornadoes struck in March 2025, producing $8.4 billion in insured losses in that month alone. Source: Insurance Information Institute, April 2026.
- A rare EF5 tornado struck near Enderlin, North Dakota in June 2025, the first EF5 in the United States in 12 years. Source: Insurance Information Institute, April 2026.
- Between 1997 and 2016, tornadoes caused about $168 billion in damage in the U.S., more than the $161 billion attributed to hurricanes over the same period. Source: Insurance Information Institute.
- In 2024 there were 54 direct tornado deaths, below the 20-year average of 78, and 33 of those 54 deaths occurred in manufactured or mobile homes. Source: National Weather Service, July 2025.
Annual U.S. tornado counts
Annual tornado totals swing widely year to year because a single multi-day outbreak can add hundreds of tornadoes. Preliminary counts, based on spotter and radar reports, run higher than the confirmed counts that survive damage surveys. The values below are the confirmed or institution-reported totals from the cited sources.
| Year | U.S. tornadoes | Notes | Source |
|---|---|---|---|
| 2004 | 1,817 | All-time record | NWS |
| 2008 | 1,689 | Fourth-highest on record | NWS |
| 2011 | 1,691 | Deadliest year, 553 deaths | III / SPC |
| 2014 | 886 | Low year in the 2004 to 2023 span | III |
| 2019 | 1,517 | Fifth-highest on record | NWS |
| 2023 | 1,294 | 83 fatalities | III / SPC |
| 2024 | 1,796 | Second-highest on record | NWS |
| 2025 | ~1,558 (preliminary) | Second consecutive above-average year | Reported totals, preliminary |
The 2025 total is preliminary and subject to revision as damage surveys are finalized. Preliminary report tallies for 2024 reached roughly 1,910 before being resolved to 1,796 confirmed, which illustrates why preliminary and confirmed counts should not be compared directly.
Tornadoes by state
Tornado frequency is heavily concentrated in the Central and Southern Plains and the Southeast. The table below shows average annual tornado counts by state for 1989 to 2019, the most complete state-average period available from NOAA NCEI, alongside 2024 record-year counts where the state set a record.
| State | Avg tornadoes/year (1989-2019) | 2024 count (if record) | Source |
|---|---|---|---|
| Texas | 151 | – | NOAA NCEI |
| Kansas | 91 | – | NOAA NCEI |
| Oklahoma | 68 | 152 (state record) | NOAA NCEI / NWS |
| Florida | 60 | – | NOAA NCEI |
| Nebraska | 55 | – | NOAA NCEI |
| Illinois | 54 | 142 (state record) | NOAA NCEI / NWS |
| Iowa | 52 | 125 (state record) | NOAA NCEI / NWS |
| Mississippi | 50 | – | NOAA NCEI |
| Alabama | 50 | – | NOAA NCEI |
| Colorado | 49 | – | NOAA NCEI |
State averages vary with the reference period. Texas has been reported at 151 per year (1989 to 2019), 155 per year (1991 to 2010), and 124 per year (2003 to 2022) across different NOAA-derived windows. These differences reflect the period chosen, not disagreement among sources. In the 2024 record year, Ohio (74) and New York (32) also set state records, showing that severe-tornado risk now extends well beyond the traditional Plains core.
How tornado wind speed removes roofs
The Enhanced Fujita (EF) scale rates tornadoes by the damage they cause across 28 standardized damage indicators, assigned by NWS survey teams after the event. Roof outcomes are explicit in the scale, which makes the EF rating a direct proxy for roof-damage severity.
| EF rating | Wind speed | Roof and structure damage |
|---|---|---|
| EF0 | 65-85 mph | Light; chimney damage, branches broken |
| EF1 | 86-110 mph | Roof surfaces peeled off; mobile homes overturned |
| EF2 | 111-135 mph | Roofs torn from frame houses; mobile homes demolished |
| EF3 | 136-165 mph | Roofs and some walls torn from well-constructed houses |
| EF4 | 166-200 mph | Well-constructed houses leveled |
| EF5 | Over 200 mph | Strong frame houses lifted off foundations and disintegrated |
Source: National Weather Service, Norman OK. The practical reading for roofing is that partial roof-covering loss starts at EF1 (86 mph) and total roof removal from a frame house is expected by EF2 (111 mph). Because most homeowners never see winds above EF2 even in tornado-prone states, roof-covering attachment and decking fastening are the components that most often determine whether a home is repairable or a total loss.
Insured losses and cost
Insurers group tornadoes with hail and straight-line wind under the “severe convective storm” (SCS) peril, so isolated national tornado-only loss totals are rarely published. The combined SCS figures still frame the scale of the problem.
- SCS insured losses reached $51 billion in 2025, the third straight year above $50 billion. Source: Insurance Information Institute, April 2026.
- Total 2025 economic damages from SCS exceeded $68 billion, the third costliest on record. Source: Insurance Information Institute, April 2026.
- The March 2025 outbreak of 300 tornadoes alone caused $8.4 billion in insured losses. Source: Insurance Information Institute, April 2026.
- Roofs bear an estimated 70% to 90% of total insured residential catastrophic losses. Source: Insurance Information Institute.
- The three costliest tornado-and-derecho insured-loss events on record are the Midwest derecho of August 2020 ($11.2 billion in 2024 dollars), the April 22 to 28, 2011 outbreak ($10.6 billion), and the Joplin, Missouri tornado of May 2011 ($9.8 billion). Source: Aon, January 2025.
Original synthesis (Roofing Brief calculations)
The following figures are original calculations derived from the cited public datasets. They are not published statistics. Each states its inputs and limitations.
1. Roughly one in five U.S. tornadoes is strong enough to strip a roof off a frame house
Roof removal from a frame house is expected at EF2 and above. Summing the EF2 (about 14%), EF3 (about 4%), EF4 (about 1%), and EF5 (about 0.1%) shares of all tornadoes gives about 19%. Adding EF1 events (about 32%), where roof surfaces are already peeled off, means more than half of all tornadoes reach wind speeds that cause at least partial roof-covering loss. Inputs: NOAA-based EF intensity distribution; NWS EF damage descriptions. Limitation: intensity shares are long-run historical averages and vary year to year; the EF rating reflects observed peak damage along the path, not damage at every structure.
2. Five states absorb about one-third of all U.S. tornadoes each year
Texas (151), Kansas (91), Oklahoma (68), Florida (60), and Nebraska (55) average 425 tornadoes per year combined. Against a national average of about 1,333 per year for the same 1989 to 2019 period, those five states account for roughly 32% of U.S. tornado activity. Inputs: NOAA NCEI state averages and national average via FOX Weather. Limitation: state and national figures use the same source and period, but tornado counts do not equal roof-loss counts because path length, population density, and building stock differ by state.
3. The March 2025 outbreak cost about $28 million in insured losses per tornado
Dividing the $8.4 billion in insured losses attributed to the March 2025 outbreak by its 300 tornadoes yields about $28 million per tornado. Inputs: Insurance Information Institute, April 2026. Limitation: this is an outbreak-specific average dominated by a few high-impact tornadoes that struck populated areas; it is not a per-tornado cost that can be applied to weak or rural tornadoes.
4. Manufactured homes drive the majority of tornado roof fatalities
In 2024, 33 of 54 direct tornado deaths (about 61%) occurred in manufactured or mobile homes. Because these structures lose roofs and anchoring at EF1 to EF2 winds that site-built homes often survive with roof-only damage, the fatality share understates how disproportionately their roofs fail. Inputs: NWS 2024 summary. Limitation: a single year; fatality location is a proxy for structural vulnerability, not a direct roof-failure count.
Methodology
Source selection prioritized primary and institutional data in this order: NOAA/NWS Storm Prediction Center and National Weather Service for tornado counts, records, and EF-scale damage descriptions; NOAA National Centers for Environmental Information for state averages; and the Insurance Information Institute (Triple-I) for insured-loss and economic-loss figures, which Triple-I attributes to Gallagher Re and Aon. Secondary aggregators were used only to surface preliminary 2025 counts, which are labeled preliminary.
Inclusion required that a figure carry a clear year, geography, and traceable source. Where the same metric appeared with different values (for example, Texas state averages across different reference periods, or the 2004 record reported as 1,817 by NWS and 1,819 by Triple-I), both values and their periods are shown rather than averaged. Preliminary report tallies are separated from confirmed counts. Derived figures are labeled Roofing Brief calculations with inputs. Any figure that could not be traced to a fetched source was excluded. Last updated August 2026.
Source quality ranking
- Tier 1 (primary and official): NOAA/NWS Storm Prediction Center; National Weather Service (national and Norman OK office); NOAA National Centers for Environmental Information Storm Events Database.
- Tier 2 (institutional and industry): Insurance Information Institute (Triple-I), including data it attributes to Gallagher Re and Aon.
- Tier 3 (reputable journalism relaying primary data): FOX Weather, WGME, and ustornadoes.com, used only where they transcribe NOAA/SPC figures.
- Excluded: unsourced blog counts, AI-generated summaries, and any preliminary figure that could not be tied to NOAA or Triple-I.
Most quotable statistics
- The U.S. recorded 1,796 confirmed tornadoes in 2024, the second-most on record. (NWS)
- Roof surfaces peel off at EF1 (86 mph) and roofs are torn from frame houses at EF2 (111 mph). (NWS Norman OK)
- Texas averages 151 tornadoes per year, more than any other state. (NOAA NCEI)
- Severe convective storms, including tornadoes, caused $51 billion in U.S. insured losses in 2025, the third straight year above $50 billion. (Triple-I)
- Roofs bear an estimated 70% to 90% of insured residential catastrophic losses. (Triple-I)
Press summary
Tornadoes remain the most concentrated roof-destroying hazard in the United States. The country recorded 1,796 confirmed tornadoes in 2024, the second-most since 1950 and only 21 short of the 2004 record, according to the National Weather Service. Texas leads all states with an average of 151 tornadoes per year, followed by Kansas at 91, based on NOAA data for 1989 to 2019. Roof damage begins at EF1 intensity (86 to 110 mph), where roof surfaces peel off, and roofs are torn from frame houses at EF2 (111 to 135 mph). About 77% of tornadoes are weak (EF0 to EF1), yet the roughly one in five reaching EF2 or higher can remove a roof entirely. Severe convective storms, which include tornadoes, generated $51 billion in U.S. insured losses in 2025, the third consecutive year above $50 billion, according to the Insurance Information Institute. Roofs account for an estimated 70% to 90% of insured residential catastrophic losses.
Suggested headlines
- 2024 Was the Second-Worst Tornado Year on Record, and Roofs Paid the Price
- Where Tornadoes Hit Roofs Hardest: The State-by-State Data
- At 86 mph a Roof Starts Peeling: What the EF Scale Says About Your Home
- Five States Absorb a Third of America’s Tornadoes Every Year
- $51 Billion and Climbing: The Real Cost of Severe-Storm Roof Damage
Frequently asked questions
How many tornadoes hit the United States each year?
The U.S. averaged about 1,233 tornadoes per year over 1996 to 2020 and about 1,333 per year over 1989 to 2019. In 2024 the confirmed total reached 1,796, the second-most on record. Source: Storm Prediction Center; National Weather Service.
What was the worst tornado year on record?
2004 holds the record with 1,817 confirmed tornadoes, followed by 2024 with 1,796. The deadliest year was 2011, with 1,691 tornadoes and 553 deaths. Source: National Weather Service; Insurance Information Institute.
At what tornado wind speed does a roof come off?
Roof surfaces begin peeling off at EF1 intensity (86 to 110 mph), and roofs are torn from frame houses at EF2 intensity (111 to 135 mph). Source: National Weather Service, Norman OK.
Which state has the most tornadoes?
Texas has the most, averaging 151 tornadoes per year for 1989 to 2019, followed by Kansas at 91 and Oklahoma at 68. Source: NOAA National Centers for Environmental Information.
What percentage of tornadoes are strong enough to destroy a roof?
About 77% of tornadoes are weak (EF0 to EF1), while roughly one in five reach EF2 or higher, the intensity at which a roof is torn from a frame house. Source: NOAA-based intensity distribution; National Weather Service (Roofing Brief calculation for the combined EF2-plus share).
How much do tornadoes cost in insured damage?
Severe convective storms, which include tornadoes, hail, and straight-line wind, caused $51 billion in U.S. insured losses in 2025, the third straight year above $50 billion. The March 2025 outbreak alone cost $8.4 billion. Source: Insurance Information Institute, April 2026.
Are tornadoes getting more frequent?
Both 2024 (1,796) and 2025 (about 1,558 preliminary) ran above the 1996 to 2020 average of about 1,233, the second consecutive above-average year. Long-term counts are influenced by improved detection and reporting, so trend claims should be made cautiously. Source: National Weather Service; Storm Prediction Center.
Why are mobile homes so dangerous in tornadoes?
Manufactured and mobile homes lose roofs and anchoring at lower wind speeds than site-built homes. In 2024, 33 of 54 direct tornado deaths (61%) occurred in manufactured or mobile homes. Source: National Weather Service, July 2025.
Does homeowners insurance cover tornado roof damage?
Standard homeowners policies generally cover wind and tornado damage to roofs, though deductibles, wind or named-storm provisions, and roof-age schedules vary by state and carrier. This report does not provide coverage advice; confirm terms with your insurer. Source: Insurance Information Institute (general coverage context).
How is a tornado’s strength rated?
The National Weather Service assigns an Enhanced Fujita (EF) rating from EF0 to EF5 after surveying damage against 28 standardized damage indicators, including roofs and residential structures. Ratings estimate peak wind speed from the observed damage. Source: National Weather Service, Norman OK; Storm Prediction Center.
Reviewed by The Roofing Brief Team. Last reviewed August 2026.