States › New Hampshire › Coos County

Coos County, New Hampshire

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

FIPS 33007 · 31,289 residents (2021) · 1,795 sq mi · dominant hazard Wind

Hail · 62Tornado · 8Flood · 111Wind · 175Winter · 0

Coos County within New Hampshire. 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.

Between 1950 and 2026, NCEI recorded 364 storm events in Coos County, New Hampshire, led by damaging wind.

That is 20.3 events per 100 square miles, below the New Hampshire figure of 96.7, and 116.3 per 10,000 residents against 62.4 statewide.

4 events fall in the 12 months to 30 Jun 2026. NCEI attributes 2 deaths and 41 injuries to events in the county, with property damage estimated at $15M.

FEMA has designated the county in 28 federal disaster declarations since 1953; the most recent is Severe Storm And Flooding (major disaster, 20 Aug 2024).

National Flood Insurance Program policyholders in the county filed 95 claims since 1978, of which 73 were paid, totalling $669K (about $9K per paid claim). FEMA counts 84 residential flood policies in force.

FEMA's National Risk Index rates the county's overall risk as "Relatively Low" and its expected annual loss as "Relatively Low" ($27M a year across 18 hazards).

25 tropical storm or hurricane tracks in the HURDAT2 record passed within 100 miles of the county's centre at tropical-storm strength or more, 0 of them within 50 miles at hurricane strength.

4events, last 12 monthsto 30 Jun 2026

364events since 19502 deaths, 41 injuries recorded

28disaster declarationslast 20 Aug 2024

95NFIP flood claims$669K paid

Compared with New Hampshire and the United States

Measure	Coos County	New Hampshire	US
Recorded events since 1950	364	8,661	1,977,440
Events per 100 square miles	20.3	96.7	56.0
Events per 10,000 residents	116.3	62.4	59.6
Events in the last 12 months	4	298	62,008
Deaths recorded by NCEI	2	42	26,435
Property damage (NCEI estimates)	$15M	$343M	$575B
NFIP claims per 1,000 residents	3.0	3.2	8.1
Average paid NFIP claim	$9K	$20K	$43K
Claims per 100 policies in force, last 10 years	20.2	15.3	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

Tornado: 1Wind: 1

Tornado: 1Wind: 2

Hail: 2Tornado: 1Wind: 8

Hail: 1Tornado: 1Wind: 20

Hail: 3Tornado: 1Flood: 5Wind: 22Lightning: 4

Hail: 9Flood: 9Wind: 30Lightning: 1Other: 1

Hail: 27Tornado: 3Flood: 62Wind: 67Lightning: 1Other: 1

Hail: 20Flood: 35Wind: 25

21950s31960s111970s221980s351990s502000s1612010s802020s

Recorded events in Coos County by decade and hazard group. HailTornadoFloodWindLightningOther NCEI recorded only tornadoes, hail and thunderstorm wind before 1996.

Trend: 267 events in the 20 years to 2025 against 71 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

Wind175

Flood111

Hail62

Tornado8

Lightning6

Other2

Hazard	Events	Deaths	Share of state's events
■ Wind	175	2	5.8%	detail
■ Flood	111	—	10.6%	detail
■ Hail	62	—	6.5%	detail
■ Tornado	8	—	7.1%
■ Lightning	6	—	2.9%
■ Other	2	—	4.1%

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

Date	Event type	Group	Magnitude	Property damage	Crop damage	Deaths	Injuries	Geography
3 Aug 2015	Thunderstorm Wind	Wind	75 mph	—	—	2	32	County
5 Jul 1999	Thunderstorm Wind	Wind	81 mph	—	—	—	3	County
25 Jul 1999	Lightning	Lightning	—	—	—	—	2	County
2 Jul 1994	Thunderstorm Wind	Wind	0 mph	$50K	—	—	1	County
26 Jul 2021	Flash Flood	Flood	—	$20K	—	—	1	County
22 Mar 1999	Lightning	Lightning	—	—	—	—	1	County
23 Jul 2016	Lightning	Lightning	—	—	—	—	1	County
28 Aug 2011	Flash Flood	Flood	—	$6.5M	—	—	—	County
15 Apr 2014	Flood	Flood	—	$1.9M	—	—	—	County
26 May 2011	Flash Flood	Flood	—	$716K	—	—	—	County
16 Apr 2007	Flood	Flood	—	$700K	—	—	—	County
31 Aug 1993	Thunderstorm Wind	Wind	0 mph	$500K	—	—	—	County
7 Aug 2008	Flash Flood	Flood	—	$500K	—	—	—	County
18 Dec 2023	Flash Flood	Flood	—	$500K	—	—	—	County
30 Oct 2017	Flash Flood	Flood	—	$436K	—	—	—	County
1 Apr 1998	Flash Flood	Flood	—	$300K	—	—	—	County
18 Dec 2023	Flood	Flood	—	$300K	—	—	—	County
8 Aug 1980	Tornado	Tornado	F0	$250K	—	—	—	County
15 Apr 2014	Flood	Flood	—	$250K	—	—	—	County
27 Jun 2008	Lightning	Lightning	—	$200K	—	—	—	County

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

Declared	Number	Type	Incident	Title	Programs
20 Aug 2024	DR-4812	Major disaster	Severe Storm	Severe Storm And Flooding	Public assistance
27 Feb 2024	DR-4761	Major disaster	Severe Storm	Severe Storm And Flooding	Public assistance
14 Sep 2023	DR-4740	Major disaster	Flood	Severe Storms And Flooding	Public assistance
15 Mar 2023	DR-4693	Major disaster	Severe Storm	Severe Storm And Flooding	Public assistance
3 Apr 2020	DR-4516	Major disaster	Biological	Covid-19 Pandemic	Individual assistance, Public assistance
13 Mar 2020	EM-3445	Emergency	Biological	Covid-19	Public assistance
2 Jan 2018	DR-4355	Major disaster	Severe Storm	Severe Storm And Flooding	Public assistance
9 Aug 2017	DR-4329	Major disaster	Severe Storm	Severe Storms And Flooding	Public assistance
28 Nov 2012	DR-4095	Major disaster	Hurricane	Hurricane Sandy	Public assistance
30 Oct 2012	EM-3360	Emergency	Hurricane	Hurricane Sandy	Public assistance
1 Nov 2011	EM-3344	Emergency	Severe Storm	Severe Storm	Public assistance
3 Sep 2011	DR-4026	Major disaster	Hurricane	Tropical Storm Irene	Public assistance
27 Aug 2011	EM-3333	Emergency	Hurricane	Hurricane Irene	Public assistance
22 Jul 2011	DR-4006	Major disaster	Flood	Severe Storms And Flooding	Public assistance
2 Jan 2009	DR-1812	Major disaster	Severe Ice Storm	Severe Winter Storm	Public assistance
13 Dec 2008	EM-3297	Emergency	Severe Storm	Severe Winter Storm	Public assistance
5 Sep 2008	DR-1787	Major disaster	Severe Storm	Severe Storms And Flooding	Public assistance
27 Apr 2007	DR-1695	Major disaster	Severe Storm	Severe Storms And Flooding	Public assistance
19 Sep 2005	EM-3258	Emergency	Hurricane	Hurricane Katrina Evacuation	Public assistance
30 Mar 2005	EM-3208	Emergency	Snowstorm	Record Snow	Public assistance
15 Jan 2004	EM-3193	Emergency	Snowstorm	Snow	Public assistance
28 Mar 2001	EM-3166	Emergency	Snowstorm	Snow	Public assistance
15 Jan 1998	DR-1199	Major disaster	Severe Storm	Severe Ice Storm, Rains And High Winds	Individual assistance, Public assistance
3 Jan 1996	DR-1077	Major disaster	Flood	Excessive Rainfall, High Winds, And Flooding	Public assistance
16 Mar 1993	EM-3101	Emergency	Snowstorm	Blizzards, High Winds & Record Snowfall	Public assistance
29 Aug 1990	DR-876	Major disaster	Flood	Severe Storms & Flooding	Public assistance
15 Mar 1979	EM-3073	Emergency	Flood	Flooding	Individual assistance
11 Jul 1973	DR-399	Major disaster	Flood	Severe Storms & Flooding	Individual 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 Coos County, 1978 to 2026 (hover for the amount paid).

Claims since 197895

Paid claims73

Total paid$669K

Average paid claim$9K

Repetitive-loss properties60 severe

Residential policies in force840.6% of 14,285 structures

Year of loss	Claims	Paid claims	Amount paid	Average paid
2024	1	0	$0	—
2023	7	7	$163,880	$23,411
2022	1	0	$0	—
2019	1	1	$3,114	$3,114
2018	1	0	$0	—
2017	6	5	$18,095	$3,619
2015	1	0	$0	—
2014	5	4	$72,543	$18,136
2011	7	6	$52,117	$8,686
2005	3	3	$42,583	$14,194
2002	3	3	$7,902	$2,634
2001	1	1	$32,000	$32,000
2000	2	2	$14,423	$7,211
1999	2	1	$2,016	$2,016
1998	16	13	$162,526	$12,502
1996	4	1	$3,539	$3,539
1995	4	3	$14,233	$4,744
1990	1	0	$0	—
1989	3	1	$1,035	$1,035
1987	1	0	$0	—
1986	1	1	$854	$854
1984	3	2	$6,276	$3,138
1982	1	1	$18,714	$18,714
1981	14	13	$29,351	$2,258
1979	4	4	$17,179	$4,295

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 Lowscore 72.8 of 100

Expected annual loss$27MRelatively Low

Social vulnerabilityRelatively Moderate

Community resilienceRelatively Moderate

Hazard (NRI)	Risk rating	Expected annual loss
Inland flooding	Relatively Moderate	$15,128,270
Cold wave	Relatively Moderate	$4,991,029
Avalanche	Very High	$4,566,667
Hurricane	Relatively Low	$1,112,591
Winter weather	Relatively High	$311,666
Earthquake	Very Low	$221,775
Lightning	Relatively Low	$219,182
Strong wind	Relatively Low	$181,635
Ice storm	Relatively Moderate	$179,859
Tornado	Very Low	$63,121
Heat wave	Very Low	$23,877
Landslide	Relatively Low	$16,390
Hail	Very Low	$14,532
Wildfire	Very Low	$4,936

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 miles25

Tracks within 50 miles3

Hurricane strength within 50 miles0

Storm	Year	Closest approach	Max wind while within 100 mi
Irene	2011	51 mi	52 mph
Floyd	1999	100 mi	52 mph
Gloria	1985	86 mi	58 mph
David	1979	68 mi	52 mph
Doria	1971	64 mi	52 mph
Unnamed Atlantic storm	1968	67 mi	52 mph
Esther	1961	86 mi	40 mph
Unnamed Atlantic storm	1961	70 mi	69 mph
Unnamed Atlantic storm	1949	84 mi	52 mph
Unnamed Atlantic storm	1934	55 mi	40 mph
Unnamed Atlantic storm	1929	60 mi	52 mph
Unnamed Atlantic storm	1923	27 mi	40 mph
Unnamed Atlantic storm	1916	46 mi	46 mph
Unnamed Atlantic storm	1908	77 mi	40 mph
Unnamed Atlantic storm	1899	62 mi	52 mph
Unnamed Atlantic storm	1897	100 mi	40 mph
Unnamed Atlantic storm	1896	79 mi	52 mph
Unnamed Atlantic storm	1894	54 mi	52 mph
Unnamed Atlantic storm	1893	54 mi	63 mph
Unnamed Atlantic storm	1893	38 mi	58 mph
Unnamed Atlantic storm	1874	68 mi	69 mph
Unnamed Atlantic storm	1869	78 mi	104 mph
Unnamed Atlantic storm	1866	85 mi	46 mph
Unnamed Atlantic storm	1861	78 mi	58 mph
Unnamed Atlantic storm	1858	86 mi	58 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

03581 29
03590 19
03584 15
03582 13
03570 8

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 Coos County, NH?

NCEI records 62 hail events in Coos County since 1950, in 23 different years; that is about 0.8 recorded events a year. 5 reports were golf-ball size (1.75 in) or larger.

Has Coos County had a tornado?

Yes. NCEI records 8 tornadoes in Coos County since 1950, 0 of them rated (E)F2 or stronger. Tornado deaths recorded: 0.

When was the last federal disaster declaration for Coos County?

20 Aug 2024: Severe Storm And Flooding, a major disaster declaration for severe storm. The county appears in 28 declarations since 1953.

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

95 NFIP claims since 1978, 73 of them paid, for $669K in total. FEMA publishes these figures redacted and aggregated; individual properties are not identified.

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

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

How does Coos County compare with the rest of New Hampshire?

20.3 recorded events per 100 square miles against 96.7 statewide, and 3.0 NFIP claims per 1,000 residents against 3.2. 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.