County Hazards

States › Massachusetts › Suffolk County

Suffolk County, Massachusetts

Recorded hazard history: storm events since 1950, federal disaster declarations since 1953, flood insurance claims since 1978, and FEMA's risk index.

FIPS 25025 · 771,245 residents (2021) · 58 sq mi · dominant hazard Wind

Hail · 24Tornado · 1Flood · 113Wind · 268Winter · 75
1966-06-06: Hail1987-06-13: Hail1989-06-02: Hail1991-06-12: Hail1997-08-22: Hail1999-07-25: Hail2000-07-18: Hail2004-07-02: Hail2006-06-23: Hail2008-08-10: Hail2010-05-08: Hail2010-06-05: Hail2011-08-19: Hail2011-08-19: Hail2012-06-08: Hail2012-07-18: Hail2012-07-18: Hail2013-06-17: Hail2015-08-04: Hail2015-08-04: Hail2016-07-23: Hail2017-06-13: Hail2020-08-23: Hail2020-06-28: Hail2014-07-28: Tornado2005-07-06: Flood2005-07-06: Flood2006-10-28: Flood2008-02-13: Flood2010-07-10: Flood2010-03-14: Flood2010-08-25: Flood2012-10-29: Flood2013-07-23: Flood2013-06-07: Flood2013-09-01: Flood2014-10-23: Flood2016-07-23: Flood2016-10-21: Flood2017-09-14: Flood2017-09-30: Flood2017-09-30: Flood2017-09-30: Flood2017-09-30: Flood2017-08-02: Flood2017-08-02: Flood2017-08-02: Flood2017-08-02: Flood2017-10-30: Flood2017-07-12: Flood2017-07-18: Flood2018-11-03: Flood2018-05-15: Flood2018-09-18: Flood2018-09-25: Flood2018-08-12: Flood2018-06-25: Flood2018-06-25: Flood2018-06-25: Flood2018-07-17: Flood2018-07-17: Flood2019-06-29: Flood2019-07-31: Flood2019-07-31: Flood2019-07-06: Flood2019-08-07: Flood2020-06-28: Flood2020-06-28: Flood2021-07-09: Flood2021-07-09: Flood2021-07-09: Flood2021-09-02: Flood2023-07-21: Flood2023-07-21: Flood2023-07-21: Flood2023-07-29: Flood2023-01-23: Flood2023-07-21: Flood2023-07-21: Flood2023-07-21: Flood2023-07-29: Flood2023-07-29: Flood2023-07-29: Flood2023-08-18: Flood2023-07-16: Flood2023-07-25: Flood2024-06-26: Flood2024-06-26: Flood2025-07-25: Wind2025-07-20: Wind2024-06-14: Wind2023-07-27: Wind2023-07-25: Wind2023-07-25: Wind2022-08-07: Wind2022-05-22: Wind2022-05-22: Wind2022-05-22: Wind2022-05-22: Wind2021-07-27: Wind2021-07-27: Wind2021-07-27: Wind2021-07-27: Wind2021-07-27: Wind2021-07-27: Wind2021-07-07: Wind2021-06-30: Wind2021-06-30: Wind2021-06-30: Wind2021-06-29: Wind2020-10-07: Wind2020-07-23: Wind2020-07-23: Wind2020-06-28: Wind2020-06-28: Wind2020-06-28: Wind2020-05-15: Wind2020-05-15: Wind2019-08-07: Wind2019-07-31: Wind2019-07-31: Wind2019-07-31: Wind2019-07-31: Wind2019-07-31: Wind2019-07-31: Wind2019-07-17: Wind2018-07-17: Wind2017-09-14: Wind2017-09-14: Wind2017-08-02: Wind2017-07-12: Wind2017-06-27: Wind2016-07-23: Wind2016-07-23: Wind2016-07-23: Wind2016-07-23: Wind2016-07-23: Wind2016-07-18: Wind2016-07-18: Wind2016-07-18: Wind
Suffolk County within Massachusetts. Dots: HailTornadoFloodWind event locations in the kept record. Boundaries: US Census Bureau.

NCEI notes that Storm Data is compiled from a variety of sources including the National Weather Service, other federal, state and local agencies, the media and the public; that property and crop damage figures are estimates; and that some events are recorded by NWS forecast zone rather than by county. FEMA notes that NFIP claim records are redacted and aggregated to protect the privacy of policyholders. NCEI storm records through 30 Jun 2026; OpenFEMA declarations refreshed 1 Oct 2026; NFIP claims as of 8 Sep 2026.

Suffolk County, Massachusetts, has 539 weather events in the NCEI Storm Events record since 1950, most of them damaging wind.

That is 925.3 events per 100 square miles, above the Massachusetts figure of 210.6, and 7.0 per 10,000 residents against 23.5 statewide.

5 events fall in the 12 months to 30 Jun 2026. NCEI attributes 7 deaths and 47 injuries to events in the county, with property damage estimated at $69M.

FEMA has designated the county in 38 federal disaster declarations since 1953; the most recent is Hurricane Lee (emergency, 15 Sep 2023).

National Flood Insurance Program policyholders in the county filed 4,369 claims since 1978, of which 3,537 were paid, totalling $29M (about $8K per paid claim). FEMA counts 3,270 residential flood policies in force.

FEMA's National Risk Index rates the county's overall risk as "Relatively Moderate" and its expected annual loss as "Relatively Moderate" ($115M a year across 18 hazards).

54 tropical storm or hurricane tracks in the HURDAT2 record passed within 100 miles of the county's centre at tropical-storm strength or more, 3 of them within 50 miles at hurricane strength.

5events, last 12 monthsto 30 Jun 2026
539events since 19507 deaths, 47 injuries recorded
38disaster declarationslast 15 Sep 2023
4,369NFIP flood claims$29M paid

Compared with Massachusetts and the United States

MeasureSuffolk CountyMassachusettsUS
Recorded events since 195053916,4271,977,440
Events per 100 square miles925.3210.656.0
Events per 10,000 residents7.023.559.6
Events in the last 12 months530762,008
Deaths recorded by NCEI716026,435
Property damage (NCEI estimates)$69M$1.2B$575B
NFIP claims per 1,000 residents5.75.18.1
Average paid NFIP claim$8K$16K$43K
Claims per 100 policies in force, last 10 years8.79.216.1

County-recorded events plus zone-recorded events whose forecast zone is named for the county. State and US rows include events recorded only by forecast zone. Rates use 2021 Census population and land area.

Events by decade

Wind: 5
Hail: 1Wind: 6
Wind: 4
Hail: 2Wind: 9
Hail: 3Flood: 6Wind: 30Winter: 8Heat: 2Lightning: 2Other: 12
Hail: 4Flood: 11Wind: 31Winter: 18Tropical: 3Cold: 1Lightning: 9Other: 1
Hail: 12Tornado: 1Flood: 61Wind: 123Winter: 40Tropical: 3Heat: 3Cold: 3Drought: 9Lightning: 7
Hail: 2Flood: 35Wind: 60Winter: 9Tropical: 2Lightning: 1
51950s71960s41970s111980s631990s782000s2622010s1092020s
Recorded events in Suffolk County by decade and hazard group. HailTornadoFloodWindWinterTropicalHeatColdDroughtLightningOther NCEI recorded only tornadoes, hail and thunderstorm wind before 1996.

Trend: 416 events in the 20 years to 2025 against 101 in the 20 years before. Reporting practice changed in 1996 and again with automated reports in the 2000s, so decade totals measure the record as much as the weather.

Events by type

Wind268
Flood113
Winter75
Hail24
Lightning19
Other13
Drought9
Tropical8
Heat5
Cold4
Tornado1
HazardEventsDeathsShare of state's events
■ Wind26823.2%detail
■ Flood113—6.0%detail
■ Winter7522.5%detail
■ Hail24—1.6%detail
■ Lightning1923.8%
■ Other13—4.3%
■ Drought9—4.3%
■ Tropical8—5.8%
■ Heat5—3.9%
■ Cold412.3%
■ Tornado1—0.5%

Hazard pages exist for hail, tornado, flood, wind and winter where the county has at least 10 recorded events. "Other" covers heavy rain, debris flow, dust, funnel clouds and similar reports.

Largest recorded events

DateEvent typeGroupMagnitudeProperty damageCrop damageDeathsInjuriesGeography
26 Mar 2014Strong WindWind54 mph$5K—213Forecast zone
8 Feb 2013Heavy SnowWinter———2—Forecast zone
10 Jul 2001LightningLightning———1—County
3 Feb 2007Extreme Cold/Wind ChillCold———1—Forecast zone
5 Aug 2010LightningLightning———1—County
20 Jul 2008LightningLightning————10County
28 Jul 2014TornadoTornadoEF2$4.0M——6County
27 Jun 2008LightningLightning—$5.0M——4County
22 Jun 1997LightningLightning————2County
2 Aug 2008LightningLightning————2County
4 Jul 2012LightningLightning————2County
5 Mar 2001FloodFlood—$15M———Forecast zone
14 Mar 2010FloodFlood—$11M———County
12 Dec 2010Strong WindWind35 mph$5K——1Forecast zone
23 Jul 2016Thunderstorm WindWind58 mph$5K——1County
22 Dec 2017Winter WeatherWinter—$5K——1Forecast zone
7 Feb 2020High WindWind60 mph$4K——1Forecast zone
14 Sep 1995Thunderstorm WindWind0 mph———1County
21 Oct 1996Flash FloodFlood—$10M———County
2 Jul 2004LightningLightning————1County

Ranked by deaths, then injuries, then NCEI's damage estimate. Deaths and injuries are NCEI counts (direct plus indirect); no personal details are recorded here.

Federal disaster declarations

DeclaredNumberTypeIncidentTitlePrograms
15 Sep 2023EM-3599EmergencyHurricaneHurricane LeePublic assistance
18 Apr 2022DR-4651Major disasterSnowstormSevere Winter Storm And SnowstormPublic assistance
27 Mar 2020DR-4496Major disasterBiologicalCovid-19 PandemicIndividual assistance, Public assistance
13 Mar 2020EM-3438EmergencyBiologicalCovid-19Public assistance
19 Jul 2018DR-4379Major disasterSnowstormSevere Winter Storm And SnowstormPublic assistance
13 Apr 2015DR-4214Major disasterSevere StormSevere Winter Storm, Snowstorm, And FloodingPublic assistance
19 Apr 2013DR-4110Major disasterSevere StormSevere Winter Storm, Snowstorm, And FloodingPublic assistance
17 Apr 2013EM-3362EmergencyTerroristExplosionsPublic assistance
19 Dec 2012DR-4097Major disasterHurricaneHurricane SandyPublic assistance
28 Oct 2012EM-3350EmergencyHurricaneHurricane SandyPublic assistance
26 Aug 2011EM-3330EmergencyHurricaneHurricane IrenePublic assistance
7 Mar 2011DR-1959Major disasterSnowstormSevere Winter Storm And SnowstormPublic assistance
2 Sep 2010EM-3315EmergencyHurricaneHurricane EarlPublic assistance
3 May 2010EM-3312EmergencyOtherWater Main BreakPublic assistance
29 Mar 2010DR-1895Major disasterSevere StormSevere Storms And FloodingIndividual assistance, Public assistance
13 Dec 2008EM-3296EmergencySevere StormSevere Winter StormPublic assistance
25 May 2006DR-1642Major disasterSevere StormSevere Storms And FloodingIndividual assistance
10 Nov 2005DR-1614Major disasterSevere StormSevere Storms And Flooding—
13 Sep 2005EM-3252EmergencyHurricaneHurricane Katrina EvacuationPublic assistance
17 Feb 2005EM-3201EmergencySnowstormRecord And/Or Near Record SnowPublic assistance
21 Apr 2004DR-1512Major disasterFloodFloodingIndividual assistance
15 Jan 2004EM-3191EmergencySnowstormSnowPublic assistance
11 Mar 2003EM-3175EmergencySnowstormSnowPublic assistance
10 Apr 2001DR-1364Major disasterSevere StormSevere Storms And FloodingIndividual assistance
23 Jun 1998DR-1224Major disasterFloodHeavy Rains And FloodingIndividual assistance
25 Oct 1996DR-1142Major disasterFloodExtreme Weather Conditons And FloodingIndividual assistance, Public assistance
23 Oct 1996EM-3119EmergencyFloodExtreme Weather Conditions And FloodingIndividual assistance, Public assistance
24 Jan 1996DR-1090Major disasterSnowstormBlizzard Of 96Public assistance
16 Mar 1993EM-3103EmergencySnowstormBlizzards, High Winds & Record SnowfallPublic assistance
21 Dec 1992DR-975Major disasterCoastal StormWinter Coastal StormIndividual assistance, Public assistance
4 Nov 1991DR-920Major disasterCoastal StormCoastal StormIndividual assistance, Public assistance
26 Aug 1991DR-914Major disasterHurricaneHurricane BobPublic assistance
28 Oct 1985DR-751Major disasterHurricaneHurricane GloriaPublic assistance
10 Feb 1978DR-546Major disasterFloodCoastal Storms, Flood, Ice & SnowIndividual assistance, Public assistance
7 Feb 1978EM-3059EmergencySnowstormBlizzard & SnowstormsPublic assistance
16 Oct 1973DR-405Major disasterFireFire (City Of Chelsea)Individual assistance, Public assistance
28 Sep 1972DR-357Major disasterFishing LossesToxic Algae In Coastal WatersIndividual assistance
6 Mar 1972DR-325Major disasterFloodSevere Storms & FloodingIndividual assistance, Public assistance

Declarations in which FEMA designated this county, from the OpenFEMA Disaster Declarations Summaries (v2). DR: major disaster; EM: emergency; FM: fire management assistance. Programs show whether individual or public assistance was made available.

Flood insurance claims

197820022026
NFIP claims by year of loss in Suffolk County, 1978 to 2026 (hover for the amount paid).
Claims since 19784,369
Paid claims3,537
Total paid$29M
Average paid claim$8K
Repetitive-loss properties46645 severe
Residential policies in force3,2702.5% of 132,056 structures
Year of lossClaimsPaid claimsAmount paidAverage paid
202641$22,638$22,638
202520$0—
20243225$1,164,158$46,566
20231611$188,811$17,165
202272$24,170$12,085
20212921$219,648$10,459
202062$6,351$3,176
201993$9,132$3,044
2018154121$3,861,607$31,914
20172414$159,156$11,368
201611$12,616$12,616
201544$20,151$5,038
20142416$103,020$6,439
20132318$168,447$9,358
20121711$95,613$8,692
2011105$76,878$15,376
201011780$405,360$5,067
200932$3,970$1,985
20081916$64,102$4,006
20074538$246,016$6,474
2006211178$2,095,045$11,770
20052615$89,072$5,938
20048063$207,000$3,286
20036251$366,118$7,179
200242$4,770$2,385

OpenFEMA NFIP claims (v3, as of 8 Sep 2026), aggregated by year of loss; amounts are building, contents and increased-cost-of-compliance payments as recorded. Repetitive-loss counts from the NFIP Multiple Loss Properties file (2 Aug 2026); policies in force from the NFIP Residential Penetration Rates file (3 Aug 2026).

National Risk Index

Overall riskRelatively Moderatescore 93.5 of 100
Expected annual loss$115MRelatively Moderate
Social vulnerabilityRelatively High
Community resilienceVery High
Hazard (NRI)Risk ratingExpected annual loss
Inland floodingRelatively High$59,518,167
HurricaneRelatively High$12,923,252
EarthquakeRelatively Moderate$11,650,421
Heat waveRelatively High$9,433,776
Cold waveRelatively High$8,678,435
Coastal floodingRelatively High$6,288,266
TornadoRelatively Moderate$2,596,006
LightningVery High$2,318,090
HailRelatively Moderate$615,123
Strong windRelatively Moderate$480,245
Ice stormRelatively Moderate$328,898
Winter weatherRelatively Low$43,387
WildfireVery Low$2,366
LandslideVery Low$406

FEMA National Risk Index, December 2025 release. Ratings are FEMA's relative comparison of counties; expected annual loss is FEMA's modelled estimate of average yearly building, population and agriculture loss. See how to read the NRI.

Hurricane and tropical storm passes

Tracks within 100 miles54
Tracks within 50 miles23
Hurricane strength within 50 miles3
StormYearClosest approachMax wind while within 100 mi
Elsa202123 mi58 mph
Henri202177 mi63 mph
Ida202194 mi46 mph
Andrea201332 mi46 mph
Hanna200846 mi52 mph
Barry200712 mi40 mph
Beryl200686 mi52 mph
Hermine200458 mi40 mph
Floyd199958 mi58 mph
Bertha199648 mi69 mph
Josephine199692 mi52 mph
Bob199168 mi104 mph
Gloria198596 mi86 mph
Belle197673 mi40 mph
Carrie197297 mi63 mph
Alma196635 mi46 mph
Esther196161 mi58 mph
Brenda196052 mi46 mph
Donna196033 mi69 mph
Cindy195947 mi58 mph
Carol195456 mi115 mph
Edna195456 mi109 mph
Unnamed Atlantic storm195294 mi63 mph
Able195297 mi52 mph
Unnamed Atlantic storm194423 mi98 mph

HURDAT2 best-track positions at tropical-storm strength (34 kt) or more, measured from the county's Census centre point; through the 2025 season. Distance from a track is not the same as the extent of the storm's wind, rain or surge.

ZIP codes with flood claims

ZIP codes whose NFIP claims carry this county's code, with the number of claims. Five or more claims are needed for a ZIP page to be indexed.

Questions and answers

How often does it hail in Suffolk County, MA?

NCEI records 24 hail events in Suffolk County since 1950, in 18 different years; that is about 0.3 recorded events a year. 1 reports were golf-ball size (1.75 in) or larger.

Has Suffolk County had a tornado?

Yes. NCEI records 1 tornado in Suffolk County since 1950, 1 of them rated (E)F2 or stronger. Tornado deaths recorded: 0.

When was the last federal disaster declaration for Suffolk County?

15 Sep 2023: Hurricane Lee, a emergency declaration for hurricane. The county appears in 38 declarations since 1953.

How many flood insurance claims have been filed in Suffolk County, and how much was paid?

4,369 NFIP claims since 1978, 3,537 of them paid, for $29M in total. FEMA publishes these figures redacted and aggregated; individual properties are not identified.

Is Suffolk County in the National Risk Index's high-risk band?

FEMA's National Risk Index (December 2025) rates the county "Relatively Moderate" for overall risk, "Relatively Moderate" for expected annual loss, "Relatively High" for social vulnerability and "Very High" for community resilience. These ratings are FEMA's relative comparison across all US counties.

How does Suffolk County compare with the rest of Massachusetts?

925.3 recorded events per 100 square miles against 210.6 statewide, and 5.7 NFIP claims per 1,000 residents against 5.1. The comparison table on this page shows each measure beside the state and national figures.

Provenance

Storm events: NOAA NCEI Storm Events Database, yearly details files through 30 Jun 2026 (public domain). Declarations: OpenFEMA DisasterDeclarationsSummaries v2, refreshed 1 Oct 2026. Flood claims: OpenFEMA NfipClaims v3 as of 8 Sep 2026; NfipMultipleLossProperties v1 (2 Aug 2026); NfipResidentialPenetrationRates v1 (3 Aug 2026). Risk index: FEMA National Risk Index, December 2025. Hurricane tracks: NHC HURDAT2 through 2025. Population and area: US Census Bureau, 2021 vintage. Built 1 Oct 2026; see the methodology and corrections pages. Hazard hubs: Hail · Tornado · Flood · Wind · Winter.