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Natural hazards · Northglenn

Northglenn, CO natural hazards

Most of the natural-hazard damage FEMA expects in Northglenn comes from hail, and overall the risk is low for a U.S. community. Flood insurance has paid 2 claims here since 2004. 3 federal disasters brought FEMA money into town.

FEMA National Risk Index, December 2025 · OpenFEMA claims, aid & declarations
Expected damage

How exposed is Northglenn?

28
Low
vs. U.S. communities

FEMA expects yearly storm and flood damage to homes and buildings in Northglenn to be higher than in 28% of U.S. communities, mostly from hail and inland flooding.

Hail33%Inland flooding23%Cold waves20%Tornadoes11%Everything else13%
By hazard

What Northglenn faces

Each hazard’s share of the damage FEMA expects here, and how that compares with the rest of the country.

Hail

33% of expected damage
Well above average · among the top 1% of U.S. places
Recorded about 7 times a year in the area

Inland flooding

23% of expected damage
Well below average · higher than 6% of U.S. places
Recorded about once every 2 years in the area

Cold waves

20% of expected damage
Well above average · higher than 76% of U.S. places
Recorded about once a year in the area

Tornadoes

11% of expected damage
Above average · higher than 60% of U.S. places

Lower here

Ice stormsWinter weatherHeat wavesWildfireEarthquakesLandslidesStrong windLightningDroughtVolcanic activity

Not a risk here

Coastal floodingHurricanesAvalanchesTsunamis
Flood risk changes street by street. Check a specific address on FEMA’s flood map, and ask about flood insurance before you buy.
Flood insurance claims

Does Northglenn flood?

Every paid claim on a federal flood insurance policy in Northglenn, from FEMA’s records.

2paid claims since 2004
$3Kpaid to owners
0homes flooded more than once
20042026
of homes in flood zones
are insured
of all homes
are insured
No community discount. Northglenn isn’t in FEMA’s Community Rating System, which cuts flood insurance up to 45% in towns that do extra flood-proofing.
Insurance rates: Adams County.
Disasters that hit Northglenn

3 federal disasters brought FEMA money here

Disasters the President declared that paid out in Northglenn itself: aid to households, or repair grants to the City of Northglenn.

Brought FEMA money into NorthglennDeclared for Adams County only
2013

Severe Storms, Flooding, Landslides, and Mudslides

31 households applied for aid $29K aid approved
2006

Snow

$53K to the City of Northglenn for repairs
2003

Snow

$15K to the City of Northglenn for repairs
Adams County has had 9 natural disasters declared since 1953, most often floods and winter storms.
Around Northglenn

Northglenn and the towns around it

Thornton: Low, mostly hailWestminster: Low, mostly hailBroomfield: Very low, mostly inland floodingTodd Creek: Low, mostly inland floodingWelby: Moderate, mostly inland floodingCommerce City: Moderate, mostly hailSherrelwood: Low, mostly hailFederal Heights: Low, mostly hailArvada: Moderate, mostly inland floodingBerkley: Moderate, mostly inland floodingTwin Lakes: Moderate, mostly inland floodingShaw Heights: Low, mostly hailSuperior: Low, mostly inland floodingLafayette: Very low, mostly inland floodingLouisville: Low, mostly inland floodingErie: Low, mostly inland floodingDacono: Low, mostly inland floodingNorthglenn: Low, mostly hail NorthglennThorntonWestminsterBroomfield
Very lowLowModerateHighVery high
Westminstermostly hailLow
Thorntonmostly hailLow
Northglennmostly hailLow
Broomfieldmostly inland floodingVery low
About these numbers

How to read this page

An average, not a forecastFEMA’s National Risk Index estimates the damage 18 kinds of natural hazards cause in a typical year, from decades of records and models. A quiet decade can follow a bad year.
Compared by rate“Higher than N%” compares yearly damage as a share of what’s here, so a big city isn’t rated riskier just for having more buildings. Northglenn covers 8 census tracts, combined by population.
Money that reached townFlood claims are matched to Northglenn’s own flood-insurance community; household aid to the registrant’s city; repair grants to the City of Northglenn. FEMA’s model follows property values, so a place that recently lost many homes can rate lower than it feels.

FEMA’s expected losses across Northglenn total about $9.8M a year, counting buildings, people and crops.

Sources: FEMA National Risk Index (December 2025); OpenFEMA: NFIP redacted claims, multiple-loss properties, community status book and residential penetration rates, housing assistance (owners and renters), public assistance funded projects, hazard mitigation properties and disaster declarations. Census tracts: U.S. Census Bureau.

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Boundary source: https://tigerweb.geo.census.gov/arcgis/rest/services/TIGERweb/Places_CouSub_ConCity_SubMCD/MapServer/18 · 2025-01-01
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