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Sierra County, New Mexico

Natural disaster risk, federal disaster history and flood insurance facts.

Relatively Low overall risk
22nd of 33highest risk in New Mexico
$11Mexpected losses a year
11federal declarations
1 in 333homes with flood insurance
Photo: U.S. Geological Survey, public domain

Sierra County, New Mexico has a relatively low overall risk from natural hazards in FEMA's National Risk Index. Its risk score is higher than 56% of US counties. It ranks 22nd of 33 counties in New Mexico. The costliest hazards here are inland flooding, drought and wildfires. FEMA estimates about $11 million a year in expected losses, or roughly $936 per resident. Since 1972 it has been included in 11 federal disaster or emergency declarations for natural events (9 major disasters). The most recent was in October 2014 (severe storms and flooding). Only 27 homes here carry federal flood insurance. Since 1978, federal flood insurance has paid about $158,000 on 15 claims here.

FEMA National Risk Index December 2025; OpenFEMA declarations to Nov 6, 2026; NFIP records. Updated November 6, 2026.

Top risks in Sierra County

$9.1 million a yearExpected losses. Damaging events about 2 times a year.
  • Check the FEMA flood map for your address, and ask the seller or landlord about past flooding.
  • Price a flood policy now. Most new federal policies take 30 days to start.

Drought

Moderate
$377,539 a yearExpected losses. Damaging events about 75 times a year.
  • Check local water restrictions.
  • Choose drought-tolerant plants.
$337,845 a yearExpected losses. Damaging events about once every 505 years.
  • Clear dry plants and debris within 5 feet of the house.
  • Get home insurance quotes early; availability varies by area.
HazardRatingScoreExpected loss a year
Inland floodingModerate74.3
$9M
DroughtModerate74.0
$378K
WildfireLow83.1
$338K
LightningModerate72.9
$318K
Cold waveLow33.0
$281K
EarthquakeVery Low44.6
$117K
Heat waveVery Low37.0
$114K
HailLow34.0
$81K
Winter weatherLow55.1
$45K
Strong windVery Low4.1
$15K
TornadoVery Low4.2
$8K
HurricaneVery Low12.4
$2K
Ice stormVery Low3.9
$928
LandslideVery Low50.9
$817
AvalancheVery Low50.3
$326
Volcanic activityVery Low8.5
$0

Scores are percentiles: a score of 90 means higher risk than about 90% of US counties for that hazard. Hazards FEMA does not rate here are left out. Social vulnerability is very high and community resilience is very low in FEMA's measures.

Federal disaster history

Recent disasters nationwide ›

Declarations by decade

Federal declarations for natural events that included Sierra County. 2020s bar runs to November 2026.

By type

Severe Storm5
Flood3
Fire2
Hurricane1

Most recent

Oct 29, 2014Severe Storms and FloodingMajor disaster
Oct 29, 2013Severe Storms, Flooding, and MudslidesMajor disaster
Sep 30, 2013Severe Storms and FloodingMajor disaster
Mar 24, 2011Severe Winter Storm and Extreme Cold TemperaturesMajor disaster
Aug 30, 2006Severe Storms and FloodingMajor disaster
Sep 7, 2005Hurricane Katrina EvacuationEmergency
May 13, 2000Severe Forest FireMajor disaster
May 10, 2000Severe Fire ThreatsEmergency
Sep 22, 1999Severe Ice Storms, Flooding and Heavy RainsMajor disaster
Jan 29, 1979FloodingMajor disaster
Show all 11
Sep 20, 1972Heavy Rains & FloodingMajor disaster

New Mexico also had 42 statewide declarations that did not name single counties.

Storm history since 1957

Tornado risk by county ›

The National Weather Service has logged 150 storm reports in Sierra County since 1957, with 2 deaths and 0 injuries and about $6.6 million in reported damage. The strongest on record here was an F1 tornado on September 16, 1971.

5tornadoes
41hail reports, largest 2.5 inches
35damaging thunderstorm winds
63floods and flash floods

Strongest tornadoes

DateStrengthNearHurt / killed
Sep 16, 1971F1–0 / 0
May 16, 1958F0–0 / 0
Jun 20, 1982F0–0 / 0
Jun 11, 1960F0–0 / 0
Jul 24, 1970F0–0 / 0

Most damaging storms

DateTypeNearDamage
Jul 26, 2020Flash FloodWilliamsburg$2M
Aug 17, 2015Thunderstorm WindElephant Butte$1M
Jun 29, 1996Flash FloodTruth Or Consequence$1M
Sep 13, 2013Flash FloodTruth/Consqnces$500K
Sep 11, 2002Flash FloodCuchillo$500K
Jul 9, 2008Flash FloodTruth/Consqnces$300K

Source: NOAA Storm Events Database, county-based reports through Jun 5, 2026. Tornado records start in 1950, hail and wind in 1955, and floods and other storm types in 1996, so older decades undercount. Damage is in dollars of the year it happened and is often an estimate. Winter storms, heat and hurricanes are logged by forecast zone, not county, so they are not counted here.

Flood insurance in Sierra County

Check your address flood zone ›
0.3%of homes have federal flood insurance (27 policies)
0%of homes in mapped high-risk flood zones are insured
$157,857paid on 15 flood claims since 1978
2013costliest year, with $122,541 paid

National Flood Insurance Program (NFIP) records only; private flood policies are not included. Home counts as of Aug 3, 2026. Since 2021 NFIP prices each home separately under Risk Rating 2.0, so your price depends on the building, not the county. Ask an agent for a quote.

Homes in Sierra County

$152,600median home value (New Mexico $248,100, US $332,700)
1983median year homes were built (New Mexico 1985, US 1980)
43%of homes built before 1980, before many modern wind, quake and flood building rules
41.4%of homes are mobile homes, which are the least safe in tornadoes and high winds

Older homes and mobile homes usually suffer more damage in storms, floods and earthquakes, and can cost more to insure. If you are buying, ask about roof age, foundation bolting and any retrofits. Source: US Census Bureau, American Community Survey 2020 to 2024 5-year estimates; 8,200 housing units.

Compare in New Mexico

All 33 ›
Largest countiesOverall riskTop hazard
Bernalillo CountyHighInland flooding
Doña Ana CountyHighInland flooding
Santa Fe CountyModerateInland flooding
Sandoval CountyLowInland flooding
San Juan CountyModerateInland flooding
Valencia CountyModerateInland flooding
Lea CountyModerateInland flooding
McKinley CountyLowInland flooding

Neighboring counties

CountyOverall riskDeclarations
Doña Ana CountyHigh8
Otero CountyModerate22
Grant CountyLow11
Luna CountyLow5
Lincoln CountyLow33
Socorro CountyLow10
Catron CountyVery Low10

Common questions about Sierra County

What is the biggest natural hazard in Sierra County?

Inland flooding has the highest expected yearly losses in Sierra County, about $9.1 million a year in FEMA's estimate. Drought is second at $377,539.

How many federal disasters has Sierra County had?

Sierra County has been included in 11 federal disaster or emergency declarations for natural events since 1972, including 9 major disasters. The most recent was Severe Storms and Flooding in October 2014.

Is Sierra County a high-risk place to live?

Its overall rating is Relatively Low, 22nd highest of 33 in New Mexico. A county rating covers the whole area. Risk at one address can be much higher or lower, so check the FEMA flood map and ask about the home's history.

Do I need flood insurance in Sierra County?

Standard home insurance does not cover flooding. About 1 in 333 homes in Sierra County has federal flood insurance. Lenders require it in mapped high-risk zones, but many flood claims come from outside those zones.

How many tornadoes has Sierra County had?

NOAA records list 5 tornadoes in Sierra County since 1950. The strongest was an F1 tornado on September 16, 1971. The weather service has also logged 41 hail reports and 63 floods here.

Sources: FEMA National Risk Index (December 2025), OpenFEMA Disaster Declarations Summaries, and NFIP policy and claims data. Hazard Compass is independent and not affiliated with FEMA. These figures describe the whole county, not a single property, and are not insurance or safety advice. Report a problem.