County Hazards

States › Connecticut › New Haven County

New Haven County, Connecticut

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

FIPS 09009 · 863,700 residents (2021) · 604 sq mi · dominant hazard Wind

Hail · 66Tornado · 21Flood · 158Wind · 345Winter · 0
1957-05-23: Hail1962-06-18: Hail1963-07-05: Hail1965-05-17: Hail1974-07-03: Hail1974-07-15: Hail1983-08-28: Hail1983-08-22: Hail1997-07-18: Hail1998-06-20: Hail1998-06-30: Hail1998-05-31: Hail2000-05-10: Hail2001-08-28: Hail2002-06-16: Hail2002-06-26: Hail2003-05-28: Hail2004-07-02: Hail2004-08-20: Hail2007-06-05: Hail2007-06-05: Hail2007-06-01: Hail2008-06-08: Hail2008-07-01: Hail2008-08-08: Hail2008-07-01: Hail2009-05-24: Hail2009-05-24: Hail2009-07-07: Hail2009-07-07: Hail2009-07-07: Hail2009-07-07: Hail2009-06-26: Hail2009-06-26: Hail2010-04-22: Hail2011-06-17: Hail2011-08-01: Hail2011-08-01: Hail2011-08-01: Hail2011-08-01: Hail2011-08-01: Hail2011-08-01: Hail2012-07-18: Hail2012-07-01: Hail2012-07-01: Hail2012-07-01: Hail2012-07-01: Hail2012-07-01: Hail2012-07-01: Hail2012-07-01: Hail2012-07-01: Hail2012-07-01: Hail2020-06-28: Hail2021-07-21: Hail2024-08-26: Hail2024-08-26: Hail2024-08-26: Hail2024-06-22: Hail2024-06-22: Hail2024-08-26: Hail1955-10-24: Tornado1959-08-29: Tornado1962-05-24: Tornado1971-07-29: Tornado1973-09-18: Tornado1982-07-28: Tornado1989-07-10: Tornado1989-07-10: Tornado1995-05-29: Tornado1995-05-29: Tornado1996-07-03: Tornado2002-05-31: Tornado2009-07-31: Tornado2014-07-27: Tornado2016-08-10: Tornado2018-05-15: Tornado2018-05-15: Tornado2020-08-27: Tornado2021-11-13: Tornado2021-11-13: Tornado2005-09-17: Flood2006-04-23: Flood2006-10-28: Flood2006-10-28: Flood2007-03-02: Flood2007-06-05: Flood2007-04-15: Flood2007-07-28: Flood2007-07-19: Flood2007-07-28: Flood2008-12-12: Flood2008-02-13: Flood2008-08-02: Flood2008-08-07: Flood2008-08-07: Flood2008-09-06: Flood2008-09-07: Flood2008-02-13: Flood2008-05-27: Flood2009-07-16: Flood2009-07-02: Flood2009-07-02: Flood2009-08-12: Flood2010-03-30: Flood2010-03-30: Flood2010-10-01: Flood2011-09-08: Flood2011-05-18: Flood2011-03-07: Flood2011-08-28: Flood2011-08-01: Flood2011-06-23: Flood2011-06-23: Flood2011-07-08: Flood2011-08-14: Flood2011-08-15: Flood2011-08-15: Flood2012-08-01: Flood2012-08-01: Flood2012-08-10: Flood2012-09-28: Flood2012-09-28: Flood2012-09-18: Flood2012-09-28: Flood2012-09-28: Flood2013-07-09: Flood2014-06-13: Flood2014-06-13: Flood2014-08-13: Flood2014-08-13: Flood2014-05-01: Flood2014-05-27: Flood2014-05-27: Flood2017-10-29: Flood2017-10-24: Flood2018-04-16: Flood2018-04-16: Flood2018-04-16: Flood2018-04-16: Flood2018-09-12: Flood2018-09-25: Flood2018-09-25: Flood2018-09-25: Flood2018-09-25: Flood2018-09-25: Flood2018-09-25: Flood2018-09-25: Flood2018-09-25: Flood2018-09-25: Flood2018-12-21: Flood2019-07-22: Flood2021-09-01: Flood2021-09-02: Flood2021-09-01: Flood2021-09-02: Flood2021-09-01: Flood2021-09-02: Flood2021-09-02: Flood2021-07-09: Flood2021-07-09: Flood2021-07-09: Flood2026-06-12: Wind2026-06-11: Wind2026-06-11: Wind2026-06-11: Wind2026-06-11: Wind2026-06-11: Wind2025-09-06: Wind2025-08-13: Wind2025-07-30: Wind2025-07-30: Wind2025-07-30: Wind2025-07-30: Wind2025-07-30: Wind2025-07-25: Wind2025-07-25: Wind2025-07-25: Wind2025-07-25: Wind2025-07-25: Wind2025-07-25: Wind2025-07-25: Wind2025-07-25: Wind2025-07-25: Wind2025-07-03: Wind2025-07-03: Wind2025-07-03: Wind2025-07-03: Wind2024-08-03: Wind2024-07-17: Wind2024-06-30: Wind2024-06-26: Wind2024-06-26: Wind2024-06-26: Wind2024-06-23: Wind2024-06-23: Wind2024-06-23: Wind2024-06-23: Wind2024-06-23: Wind2024-06-23: Wind2024-06-23: Wind2024-06-23: Wind2024-06-22: Wind2024-06-22: Wind2024-06-22: Wind2024-06-22: Wind2024-06-22: Wind2024-06-22: Wind2023-08-12: Wind2023-07-29: Wind2023-07-27: Wind2023-07-21: Wind2022-08-23: Wind2022-08-23: Wind2022-07-21: Wind2022-07-21: Wind2022-07-21: Wind2021-11-13: Wind2021-11-13: Wind2021-11-13: Wind2021-11-13: Wind2021-06-30: Wind2021-06-09: Wind2021-06-09: Wind2020-11-15: Wind2020-10-07: Wind2020-10-07: Wind2020-08-27: Wind2020-08-27: Wind2020-08-27: Wind2020-08-27: Wind2020-08-27: Wind2020-08-27: Wind2020-08-27: Wind2020-08-27: Wind2020-08-27: Wind2020-08-22: Wind2020-07-30: Wind2020-07-23: Wind2019-09-04: Wind2019-08-19: Wind2019-08-19: Wind2019-08-19: Wind2019-08-19: Wind2019-08-08: Wind2019-07-17: Wind2019-06-29: Wind2019-06-29: Wind2019-06-29: Wind2018-05-15: Wind2018-05-15: Wind2018-05-15: Wind2018-05-15: Wind2018-05-15: Wind2018-05-15: Wind2018-05-15: Wind2018-05-15: Wind2018-05-15: Wind2018-05-15: Wind2018-05-15: Wind2018-05-15: Wind2018-05-15: Wind2018-05-15: Wind2018-05-15: Wind2018-05-15: Wind2017-07-13: Wind2017-07-13: Wind2017-07-13: Wind2017-06-30: Wind2017-06-30: Wind2017-06-19: Wind2017-06-19: Wind2016-07-25: Wind2016-07-25: Wind2016-07-18: Wind2016-07-18: Wind2016-02-25: Wind2015-09-13: Wind2015-06-23: Wind2015-06-23: Wind2015-06-23: Wind2015-06-23: Wind
New Haven County within Connecticut. 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.

New Haven County, Connecticut, has 646 weather events in the NCEI Storm Events record since 1950, most of them damaging wind.

That is 106.9 events per 100 square miles, below the Connecticut figure of 147.9, and 7.5 per 10,000 residents against 19.9 statewide.

29 events fall in the 12 months to 30 Jun 2026. NCEI attributes 7 deaths and 157 injuries to events in the county, with property damage estimated at $286M.

FEMA has designated the county in 36 federal disaster declarations since 1953; the most recent is Hawthorne Fire (fire management assistance, 24 Oct 2024).

National Flood Insurance Program policyholders in the county filed 9,609 claims since 1978, of which 7,609 were paid, totalling $173M (about $23K per paid claim).

56 tropical storm or hurricane tracks in the HURDAT2 record passed within 100 miles of the county's centre at tropical-storm strength or more, 8 of them within 50 miles at hurricane strength.

29events, last 12 monthsto 30 Jun 2026
646events since 19507 deaths, 157 injuries recorded
36disaster declarationslast 24 Oct 2024
9,609NFIP flood claims$173M paid

Compared with Connecticut and the United States

MeasureNew Haven CountyConnecticutUS
Recorded events since 19506467,1611,977,440
Events per 100 square miles106.9147.956.0
Events per 10,000 residents7.519.959.6
Events in the last 12 months2923562,008
Deaths recorded by NCEI76526,435
Property damage (NCEI estimates)$286M$848M$575B
NFIP claims per 1,000 residents11.18.28.1
Average paid NFIP claim$23K$24K$43K
Claims per 100 policies in force, last 10 years——16.1

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

Hail: 1Tornado: 2Wind: 1
Hail: 3Tornado: 1Wind: 9
Hail: 2Tornado: 2Wind: 4
Hail: 2Tornado: 3Wind: 9
Hail: 10Tornado: 4Flood: 20Wind: 49Lightning: 11Other: 9
Hail: 22Tornado: 2Flood: 42Wind: 85Lightning: 14Other: 14
Hail: 18Tornado: 4Flood: 48Wind: 111Lightning: 6Other: 1
Hail: 8Tornado: 3Flood: 48Wind: 77Lightning: 1
41950s131960s81970s141980s1031990s1792000s1882010s1372020s
Recorded events in New Haven County by decade and hazard group. HailTornadoFloodWindLightningOther NCEI recorded only tornadoes, hail and thunderstorm wind before 1996.

Trend: 423 events in the 20 years to 2025 against 180 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

Wind345
Flood158
Hail66
Lightning32
Other24
Tornado21
HazardEventsDeathsShare of state's events
■ Wind345111.2%detail
■ Flood158415.3%detail
■ Hail66—9.6%detail
■ Lightning32118.7%
■ Other24—16.6%
■ Tornado21116.2%detail

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
18 Aug 2024Flash FloodFlood———2—County
24 May 1962TornadoTornadoF3$2.5M—145County
8 Jun 2008LightningLightning———14County
16 Sep 1999Flash FloodFlood———1—County
2 Jun 2000Thunderstorm WindWind58 mph——1—County
23 Apr 2006FloodFlood———1—County
10 Jul 1989TornadoTornadoF4$250M——40County
10 Jul 1989TornadoTornadoF2$25M——50County
29 Jul 1971TornadoTornadoF3$250K——2County
11 Aug 1998Thunderstorm WindWind70 mph———2County
27 Jun 2000LightningLightning————2County
7 Jul 2016LightningLightning————2County
15 May 2018Thunderstorm WindWind70 mph$10K——1County
13 Nov 2009Heavy RainOther—$5K——1County
18 Jan 1999LightningLightning————1County
11 Jun 2000LightningLightning————1County
10 Aug 2001LightningLightning————1County
31 May 2005LightningLightning————1County
20 Nov 2009LightningLightning————1County
21 Jul 2010LightningLightning————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
24 Oct 2024FM-5542Fire management assistanceFireHawthorne FirePublic assistance
20 Sep 2024DR-4820Major disasterSevere StormSevere Storm, Flooding, Landslides, And MudslidesIndividual assistance, Public assistance
21 Aug 2024EM-3612EmergencySevere StormSevere Storms, Flooding, Landslides, And MudslidesPublic assistance
30 Oct 2021DR-4629Major disasterHurricaneRemnants Of Hurricane IdaIndividual assistance
22 Aug 2021EM-3564EmergencyHurricaneHurricane HenriPublic assistance
12 Jan 2021DR-4580Major disasterHurricaneTropical Storm IsaiasPublic assistance
6 Aug 2020EM-3535EmergencyHurricaneTropical Storm IsaiasPublic assistance
28 Mar 2020DR-4500Major disasterBiologicalCovid-19 PandemicIndividual assistance, Public assistance
13 Mar 2020EM-3439EmergencyBiologicalCovid-19Public assistance
20 Aug 2018DR-4385Major disasterTornadoSevere Storms, Tornadoes, And Straight-Line WindsPublic assistance
8 Apr 2015DR-4213Major disasterSevere StormSevere Winter Storm And SnowstormPublic assistance
21 Mar 2013DR-4106Major disasterSevere StormSevere Winter Storm And SnowstormPublic assistance
10 Feb 2013EM-3361EmergencySevere StormSevere Winter StormPublic assistance
30 Oct 2012DR-4087Major disasterHurricaneHurricane SandyIndividual assistance, Public assistance
28 Oct 2012EM-3353EmergencyHurricaneHurricane SandyPublic assistance
17 Nov 2011DR-4046Major disasterSevere StormSevere StormPublic assistance
31 Oct 2011EM-3342EmergencySevere StormSevere StormPublic assistance
2 Sep 2011DR-4023Major disasterHurricaneTropical Storm IreneIndividual assistance, Public assistance
27 Aug 2011EM-3331EmergencyHurricaneHurricane IreneIndividual assistance, Public assistance
3 Mar 2011DR-1958Major disasterSnowstormSnowstormPublic assistance
23 Apr 2010DR-1904Major disasterSevere StormSevere Storms And FloodingIndividual assistance
11 May 2007DR-1700Major disasterSevere StormSevere Storms And FloodingIndividual assistance
2 May 2006EM-3266EmergencySnowstormSnowPublic assistance
13 Sep 2005EM-3246EmergencyHurricaneHurricane Katrina EvacuationPublic assistance
17 Feb 2005EM-3200EmergencySnowstormRecord SnowPublic assistance
15 Jan 2004EM-3192EmergencySnowstormSnowPublic assistance
11 Mar 2003EM-3176EmergencySnowstormSnowPublic assistance
24 Jan 1996DR-1092Major disasterSnowstormBlizzard 0f 96Public assistance
16 Mar 1993EM-3098EmergencySnowstormSevere Winds & Blizzard, Record SnowfallPublic assistance
17 Dec 1992DR-972Major disasterFloodWinter Storm & Coastal FloodingIndividual assistance, Public assistance
30 Aug 1991DR-916Major disasterHurricaneHurricane BobPublic assistance
17 Jul 1989DR-837Major disasterTornadoSevere Storms & TornadoesIndividual assistance, Public assistance
11 Oct 1985DR-747Major disasterHurricaneHurricane GloriaPublic assistance
18 Jun 1984DR-711Major disasterFloodSevere Storms & FloodingIndividual assistance
14 Jun 1982DR-661Major disasterFloodSevere Storms & FloodingIndividual assistance, Public assistance
7 Feb 1978EM-3060EmergencySnowstormBlizzard & SnowstormsPublic 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 New Haven County, 1978 to 2026 (hover for the amount paid).
Claims since 19789,609
Paid claims7,609
Total paid$173M
Average paid claim$23K
Repetitive-loss properties1,214151 severe
Residential policies in force—
Year of lossClaimsPaid claimsAmount paidAverage paid
2026153$20,369$6,790
202510$0—
20245138$2,715,085$71,450
20232719$523,093$27,531
20222920$625,928$31,296
202112089$2,277,958$25,595
202092$21,583$10,792
2019134$154,670$38,668
20185943$1,552,168$36,097
2017115$58,096$11,619
201651$1,118$1,118
201592$3,623$1,811
2014168$130,180$16,273
20132314$111,732$7,981
20121,8111,631$66,481,371$40,761
20111,8611,552$55,384,746$35,686
2010163121$1,057,296$8,738
20091613$461,049$35,465
20085039$377,596$9,682
2007207170$3,027,569$17,809
20064934$569,630$16,754
200510583$825,811$9,950
20043523$92,406$4,018
20033621$131,781$6,275
20021713$90,786$6,984

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

The current National Risk Index release does not carry a row for this county under the boundaries used on this site (Connecticut's index rows use planning regions).

Hurricane and tropical storm passes

Tracks within 100 miles56
Tracks within 50 miles27
Hurricane strength within 50 miles8
StormYearClosest approachMax wind while within 100 mi
Elsa202144 mi58 mph
Henri202148 mi63 mph
Ida202152 mi46 mph
Irene201177 mi63 mph
Hanna200873 mi52 mph
Barry200761 mi40 mph
Floyd199961 mi58 mph
Bertha199673 mi69 mph
Bob199168 mi104 mph
Gloria198538 mi86 mph
Henri198543 mi40 mph
Belle197629 mi69 mph
Agnes197284 mi63 mph
Doria197143 mi52 mph
Unnamed Atlantic storm196812 mi63 mph
Alma196694 mi46 mph
Esther196198 mi86 mph
Unnamed Atlantic storm196111 mi63 mph
Brenda196075 mi58 mph
Donna196026 mi98 mph
Diane195545 mi46 mph
Carol195447 mi115 mph
Able195259 mi52 mph
Unnamed Atlantic storm194448 mi104 mph
Unnamed Atlantic storm19383 mi121 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 New Haven County, CT?

NCEI records 66 hail events in New Haven County since 1950, in 25 different years; that is about 0.9 recorded events a year. 8 reports were golf-ball size (1.75 in) or larger.

Has New Haven County had a tornado?

Yes. NCEI records 21 tornadoes in New Haven County since 1950, 6 of them rated (E)F2 or stronger. Tornado deaths recorded: 1.

When was the last federal disaster declaration for New Haven County?

24 Oct 2024: Hawthorne Fire, a fire management assistance declaration for fire. The county appears in 36 declarations since 1953.

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

9,609 NFIP claims since 1978, 7,609 of them paid, for $173M in total. FEMA publishes these figures redacted and aggregated; individual properties are not identified.

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

FEMA's National Risk Index does not carry a row for this county under the county boundaries used on this site.

How does New Haven County compare with the rest of Connecticut?

106.9 recorded events per 100 square miles against 147.9 statewide, and 11.1 NFIP claims per 1,000 residents against 8.2. 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.