Storm risk in Washington County, Tennessee

FEMA's overall hazard score for Washington County, TN is 61.16 (Relatively Low), 1,222nd of 3,144 counties. Hail scores 37.95 (Relatively Low), strong wind 87.50 (Relatively High) and tornado 50.06 (Relatively Low). Expected hail loss is $3.84 per $1 million of buildings a year; NOAA logged 17 hail reports in Washington County, TN from 2014 to June 2026.

FEMA National Risk Index, version December 2025, retrieved October 8, 2026. NOAA hail reports 2014 to June 2026.

Washington County: expected yearly loss per $1 million of buildings for hail, strong wind and tornado, on a log scale, against all U.S. counties and the counties of TN$0.1$1$10$100$1,000Hail: $3.84 per $1 million, 2,526th of 3,126 rated counties$3.84Hail2,526th of 3,126 countiesStrong wind: $3.66 per $1 million, 2,755th of 3,121 rated counties$3.66Strong wind2,755th of 3,121 countiesTornado: $55 per $1 million, 2,371st of 3,144 rated counties$55Tornado2,371st of 3,144 counties
  • Washington County, TN, coloured by its FEMA rating
  • all U.S. counties
  • each county in the state
  • U.S. median
  • state median

Expected yearly loss per $1 million of buildings, log scale. Dot colour is FEMA’s rating band. The tornado lane counts everything exposed, not only buildings.

How FEMA rates Washington County, TN

HazardRatingScore (0 to 100)Rank in U.S.Rank in TN
OverallRelatively Low 61.161,222 of 3,14439 of 95
HailRelatively Low 37.951,952 of 3,12635 of 95
Strong windRelatively High 87.50394 of 3,12611 of 95
TornadoRelatively Low 50.061,571 of 3,12673 of 95

Expected yearly loss, in dollars

HazardThis county, total a yearPer $1M of buildingsState median countyU.S. median countyRank per $1M, U.S.Rank per $1M, state
Hail$88,959$3.84 $12$22 2,526 of 3,12678 of 95
Strong wind$84,970$3.66 $34$20 2,755 of 3,12194 of 95
Tornado$1,277,579$55 $403$199 2,371 of 3,14494 of 95

Rank 1 is the highest. Overall, hail and wind losses count buildings; the tornado row counts everything FEMA exposes, so it overstates building damage. Expected annual loss is an average over many years for the whole county, not a forecast for one roof.

What stands out in Washington County, TN

  • FEMA expects hail in Washington County, TN to cost $3.84 per $1 million of buildings a year: 0.17 times the U.S. median and 0.31 times the TN county median, ranked 2,526th of 3,126 counties nationally and 78th of 95 in Tennessee.
  • FEMA expects strong wind in Washington County, TN to cost $3.66 per $1 million of buildings a year: 0.18 times the U.S. median and 0.11 times the TN county median, ranked 2,755th of 3,121 counties nationally and 94th of 95 in Tennessee.
  • FEMA expects tornado in Washington County, TN to cost $55 per $1 million of buildings a year: 0.28 times the U.S. median and 0.14 times the TN county median, ranked 2,371st of 3,144 counties nationally and 94th of 95 in Tennessee.
  • NOAA has only 17 hail reports for Washington County, TN in 12 years, too few for a trend; FEMA's 122 counted hail events cover a longer record.
  • Applying FEMA's estimate to a $231,700 home, the average yearly loss in Washington County, TN is about $0.89 for hail and $0.85 for wind before any deductible; at the U.S. median county rates it would be $5.18 and $4.72.
  • If the next years look like 2014 to 2025, a roof kept 20 years in Washington County, TN meets about 16.7 hail days of 1 inch or more; the median county in NOAA's file (1,275 counties) would give 35.0.
  • Built in 1986, the median home in Washington County, TN is 40 years old, so an original roof has outlived a 3-tab shingle (15 to 20 years) and an architectural one (25 to 30 years); 71.7% of its 61,426 homes are at least 26 years old.
  • March to June holds 13 of the 17 hail reports in Washington County, TN (76 percent); the quietest month is January, with 0 reports.

What hail and wind cost a home here in an average year

Enter a home value. The calculator applies Washington County, TN’s own loss rate: the county’s expected yearly loss divided by the value of its buildings. It starts at the Census median home value for the county.

$0.89hail, a year; $5.18 at the U.S. median county rate
$0.85strong wind, a year; $4.72 at the U.S. median county rate
$35hail and wind together over 20 years, at today’s rate

Formula: home value × Washington County, TN yearly loss ÷ building value. Hail: $88,959 ÷ $23,190,696,825 = 0.0000038. Wind: $84,970 ÷ $23,190,696,825 = 0.0000037. This is FEMA’s estimate of average damage to buildings and does not account for your deductible. Tornado is left out because FEMA’s tornado loss counts people and other exposure, not only buildings.

Read this as a yardstick. The rate is an average over every building in the county, from sheds to office towers, and over many years. Real losses come in rare, large storms; a roof with no damage in 19 years can need full replacement in the 20th. The figure is not a quote and not a prediction for one address.

Washington County, TN in plain numbers

  • Washington County, TN scores 61.16 in FEMA's overall hazard index (Relatively Low): 1,222nd of 3,144 rated counties and 39th of 95 in Tennessee.
  • Hail scores 37.95 (Relatively Low). FEMA expects $88,959 of hail damage to buildings in Washington County, TN a year, which is $3.84 per $1 million of buildings, 0.17 times the U.S. median.
  • Strong wind scores 87.50 (Relatively High) with $84,970 of expected yearly building loss in Washington County, TN: $3.66 per $1 million of buildings, 0.18 times the U.S. median.
  • Tornado scores 50.06 (Relatively Low) and FEMA's expected yearly tornado loss is $1,277,579, counting everything exposed, or $55 per $1 million of buildings in Washington County, TN.
  • FEMA's own event record for Washington County, TN averages 3.21 hail events and 3.19 strong-wind events a year.
  • NOAA logged 17 hail reports in Washington County, TN between 2014 and June 2026, on 11 days with stones of 1 inch or more; the largest was 1.75 inches.
  • In Washington County, TN, FEMA counts buildings worth 23.19 billion dollars and 132,934 residents.
  • Social vulnerability is Relatively Low in Washington County, TN.
  • Community resilience there is Relatively High, for 132,934 residents.
  • 1 city in Washington County, TN is covered on this site: Johnson City. 8 Census ZIP areas have more than half of their land in the county.
  • Our guide range for a 2,000 sq ft asphalt roof in Johnson City is $6,090 to $13,485.
  • Washington County, TN ranks 162 of the 194 counties with a page here for hail loss per $1 million of buildings, 164 for wind and 172 for tornado.
  • In Washington County, TN, May is the busiest month with 6 of the 17 reports (35 percent), against 0 reports in November.
  • Washington County, TN's worst year was 2021, with 2 hail days at 1 inch or more and 4 reports. At the 2014 to 2025 pace that is 0.83 such days a year, one about every 14.4 months.
  • The median home in Washington County, TN was built in 1986; 42.8% of its 61,426 housing units date from before 1980, 71.7% from before 2000 and 11.4% from 2010 on.
  • Census puts the median home value in Washington County, TN at $231,700, and 64.4% of homes are lived in by their owners.
  • 6,058 single-family building permits were issued in Washington County, TN from 2014 to 2025, about 98.6 per 1,000 homes, peaking in 2024.
  • NOAA lists 1 tornado track in Washington County, TN since 2014; the strongest was an EF0 on July 27, 2014 near Rock Spgs, 7.1 miles long.
  • The fastest gust in NOAA's records for Washington County, TN is 100 mph on July 27, 2014 at Austin Spgs.
  • The nearest county with a page here is Sullivan County, 21 miles from the centre of Washington County, TN; its hail score is 35.97.
  • Across counties the median is one roofing firm for every 5,189 homes; Census counted 3 roofing contractor establishments in Washington County, TN in 2023, one for every 20,475 homes.

The hail record of Washington County, TN, year by year

NOAA logged 17 reports in Washington County, TN; hail of 1 inch or more fell on 11 days. With so few reports the yearly bars below are small numbers, and a single storm moves them.

Washington County: NOAA hail reports per year, 2014 to June 2026, with the number of days that had hail of 1 inch or more012342014: 2 reports, 2 days at 1 inch or more, largest 1.75 inch142015: 0 reports, 0 days at 1 inch or more, largest 0 inch152016: 2 reports, 1 days at 1 inch or more, largest 1.75 inch162017: 0 reports, 0 days at 1 inch or more, largest 0 inch172018: 0 reports, 0 days at 1 inch or more, largest 0 inch182019: 1 reports, 1 days at 1 inch or more, largest 1 inch192020: 1 reports, 1 days at 1 inch or more, largest 1 inch202021: 4 reports, 2 days at 1 inch or more, largest 1.5 inch212022: 3 reports, 1 days at 1 inch or more, largest 1.75 inch222023: 2 reports, 1 days at 1 inch or more, largest 1.25 inch232024: 1 reports, 1 days at 1 inch or more, largest 1.25 inch242025: 0 reports, 0 days at 1 inch or more, largest 0 inch252026: 1 reports, 1 days at 1 inch or more, largest 1 inch26*
  • reports
  • days with hail of 1 inch or more
  • * 2026 runs to June only
Washington County: NOAA hail reports by calendar month, 2014 to June 2026January: 0 reports0JanFebruary: 0 reports0FebMarch: 3 reports3MarApril: 0 reports0AprMay: 6 reports6MayJune: 4 reports4JunJuly: 3 reports3JulAugust: 1 reports1AugSeptember: 0 reports0SepOctober: 0 reports0OctNovember: 0 reports0NovDecember: 0 reports0Dec

Reports by calendar month, all years together. Peak: May, 6 reports.

The same numbers as a table (years with at least one report)
YearReportsDays, 1 inch or moreDays, 1.75 inch or moreLargest stoneDamage reported
20142211.75 in–
20162111.75 in–
20191101 in–
20201101 in–
20214201.5 in–
20223111.75 in–
20232101.25 in–
20241101.25 in–
2026 (to June)1101 in–

Biggest hail days in Washington County, TN

DateLargest stoneReports that dayDamage reportedNear
May 19, 20221.75 in3none recordedGray
July 19, 20161.75 in2none recordedJonesboro
July 27, 20141.75 in1none recordedGray
March 27, 20211.5 in3none recordedMc Kinley
June 4, 20231.25 in2none recordedGray

Where large hail was reported

FEMA scores the county as a whole. NOAA’s reports show where inside Washington County, TN the big stones fell.

Reported hail locations, Washington County, TN

1 in hail1 in hail1 in hail1 in hail1 in hail1 in hail1 in hail1 in hail1.25 in hail1.25 in hail1.25 in hail1.25 in hail1.5 in hail1.5 in hail1.75 in hail1.75 in hail1.75 in hail Johnson City
  • 141 to 1.74 in
  • 31.75 to 2.74 in, golf ball to tennis ball
  • 02.75 in and up, baseball

Largest plotted stone: 1.75 in. Bigger dots are bigger stones.

17 reports of 1 inch or larger have coordinates. Each dot is a reported location, not a storm path.

Sources: NOAA, Census county outline

Wind and tornado records for Washington County, TN

Fastest gusts in Washington County, TN

DateGustNear
July 27, 2014100 mphAustin Spgs
August 14, 202385 mphStewart Hill
August 14, 202381 mphWoodlawn
July 8, 201670 mphJohnson City

Strongest tornado tracks in Washington County, TN

DateScaleLengthInjured / killedNear
July 27, 2014EF07.1 mi0 / 0Rock Spgs

1 tornado track in all since 2014; the strongest 1 are listed.

How old the roofs are

Census counts homes by the decade they were built. Under each bar is the number of hail days of 1 inch or more that an original roof from that decade has met, at Washington County, TN’s 2014 to 2025 pace of 0.83 such days a year. Most roofs have been replaced since; the row shows what a roof that never was would have taken.

Washington County: share of homes by decade built, with the hail days at 1 inch or more that an original roof from each decade has met at the county's 2014 to 2025 ratepre-1940: 7.4% of homes7.4%<1940761940s: 4.2% of homes4.2%1940s681950s: 8.0% of homes8%1950s591960s: 9.0% of homes9%1960s511970s: 14.3% of homes14.3%1970s421980s: 12.0% of homes12%1980s341990s: 16.8% of homes16.8%1990s262000s: 16.9% of homes16.9%2000s182010s: 9.9% of homes9.9%2010s92020+: 1.5% of homes1.5%2020+2

Bars: share of 61,426 housing units by decade built. Figures under the decade: hail days met by an original roof, at the county’s 2014 to 2025 pace. The pace of earlier years is unknown.

Median year built1986
Built before 198042.8%
Built before 200071.7%
Built since 201011.4%
Owner-occupied64.4%
Median home value$231,700
Single-family permits, 2014 to 20256,058
Permits per 1,000 homes98.6

Asphalt shingles are rated 15 to 20 years (3-tab) and 25 to 30 years (architectural). Source: Census ACS 2019 to 2023 and Building Permits Survey.

Roofers and past disasters in Washington County, TN

Roofing firms in Washington County, TN

Roofing contractor establishments, 20233
Change since 2016-5 (-62%)
Homes per roofing firm20,475
Median across counties5,189
Employees, 202321

Source for Washington County, TN: Census County Business Patterns, NAICS 238160.

Nearby counties

The closest counties that have a risk page, by distance between county centres. Loss is per $1 million of buildings; the columns marked "times here" divide the neighbour's loss by Washington County, TN's.

CountyMilesOverallHail lossHail, times hereWind lossWind, times hereNOAA hail reports
Sullivan County, TN21 Relatively Low $3.250.85$123.3214
Knox County, TN84 Relatively Moderate $1.520.40$2.280.6248
Putnam County, TN165 Relatively Low $4010.31$4412.0235
Hamilton County, TN168 Relatively Moderate $112.98$7.241.9820
Rutherford County, TN220 Relatively Moderate $5.611.46$5.541.5148
Sumner County, TN222 Relatively Moderate $4511.63$154.0551

More Tennessee counties, nearest first

All 194 counties, with a filter by state and sorting

Cities and ZIP areas in Washington County, TN

1 city in this county is on PickARoofer. ZIP Code Tabulation Areas are Census shapes that approximate ZIP codes; where we have a city’s ZIPs, the share is the part of each area’s land that lies in this county. 8 such areas have more than half their land here.

CityZIP areas (share of land in the county)Pages
Johnson City 37601 (53%), 37604 (94%), 37615 (100%), 37620 (0%), 37659 (99%) Roofers

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Questions

How high is storm risk in Washington County, TN?

FEMA's National Risk Index gives Washington County, TN an overall score of 61.16 (Relatively Low), 1,222nd of 3,144. Hail scores 37.95 (Relatively Low), strong wind 87.50 (Relatively High) and tornado 50.06 (Relatively Low).

In Washington County, TN, how many hail reports has NOAA logged?

A report is one entry for one storm in one county, so counts follow where people live as well as where hail fell. NOAA has 17 for Washington County, TN between 2014 and June 2026, on 11 days with hail of 1 inch or more; the largest stone was 1.75 inches.

What do hail and wind cost a home in Washington County, TN each year, on average?

Applying FEMA's county rates to its median home value of $231,700: FEMA's estimate is about $0.89 a year for hail and $0.85 for wind, before any deductible, against $5.18 and $4.72 at the U.S. median county rates. This is an average over many years and all buildings, not a prediction for one roof; one bad storm costs far more than the average year.

How does Washington County, TN compare with the rest of Tennessee?

Per $1 million of buildings Washington County, TN loses $3.84 to hail a year, against $12 in the median county of the state. Among 95 rated counties it is 35th for hail, 11th for strong wind and 73rd for tornado.

How old are the roofs in Washington County, TN?

The median home was built in 1986, 40 years ago, and 71.7% of the 61,426 housing units in Washington County, TN date from before 2000. Asphalt shingles are rated 15 to 20 years (3-tab) or 25 to 30 years (architectural), so an original roof of either kind is past its rated life. The Census does not record when a roof was replaced.

What does expected annual loss mean?

It is FEMA's estimate of the average yearly loss from a hazard, in dollars, summed over the county. It is built for comparing counties at planning level, not for pricing one house.

Does a high rating mean my roof will be damaged?

No. The index compares counties and cannot say what will happen on your street. After a storm, a roof inspection is the only way to know.

Sources for Washington County, TN: FEMA National Risk Index, version December 2025, retrieved October 8, 2026; NOAA Storm Events Database hail reports for Washington County, TN; Census Bureau ZCTA-to-county relationship file (2020); Census ACS and Building Permits Survey, homes in Washington County, TN; Census County Business Patterns, roofing firms in Washington County, TN. Planning-level information about Washington County, TN, not an inspection and not insurance advice.

This product uses the Federal Emergency Management Agency's National Risk Index dataset but is not endorsed by FEMA. The Federal Government or FEMA cannot vouch for the data or analyses derived from these data after the data have been retrieved from the Agency's website(s).