Disaster Data / States / Guam / Guam County

County

Guam County, Guam

Guam County recorded 13 federal disaster and emergency declarations since FY2000 (through FY2025): 10 major disasters, 3 emergencies, and 0 fire-management declarations. Its most common hazard is typhoon.

Highlighted: Guam County, GU

Totals: FY2000–FY2025 · Page last rebuilt Sep 12, 2026 · the current in-progress fiscal year is not included in totals

13
Declarations since FY2000
10
Major disasters (DR)
3
Emergencies (EM)
0
Fire management (FM)
Jul 2026
Most recent

The federal disaster record for Guam County runs between 2001 and 2023, covering 13 declarations in all. Its most recent major disaster declaration was Typhoon Mawar in 2023. The hazards behind these declarations were most often typhoon, severe storm, and biological.

Risk and vulnerability context

Historical declarations show what has happened here. These national datasets add context about underlying natural-hazard risk and community vulnerability.

County FIPS 66010
FEMA

National Risk Index

December 2025
N/A
overall risk score
Insufficient Data
Expected annual loss$215.6MRelatively High
NRI social vulnerabilityN/AData Unavailable
Community resilienceN/AData Unavailable

The NRI combines expected annual loss, social vulnerability, and community resilience to describe relative natural-hazard risk. FEMA NRI documentation

About these measures: CDC Social Vulnerability Index and FEMA National Risk Index Social Vulnerability are separate measures built with different methods. They are shown side by side for context and should not be interpreted as equivalent scores.

Assistance to households (Individual Assistance)

FEMA Individual Assistance to households in this jurisdiction, combined across the Housing Assistance owner and renter programs. Valid registrations are households that applied within a designated Individual Assistance area; approved counts and dollars are the households FEMA found eligible under the Individuals and Households Program. Figures are self-reported and drawn from NEMIS through OpenFEMA, not audited, and Individual Assistance exists only for disasters where it was designated, so many jurisdictions show none.

56,621
valid registrations
40,579
households approved
$196,803,804
total IHP approved
Assistance typeApproved amount
Repair and replacement$39,526,188
Rental assistance$43,780,571
Other needs$113,182,278

Hazard mitigation, what has been funded here

Federal Hazard Mitigation Assistance obligated to this jurisdiction to reduce future disaster losses, across the FEMA mitigation programs. This is the record of past mitigation investment a local hazard mitigation plan documents. Figures are federal share obligated, reported through OpenFEMA and not audited, and are separate from the Public Assistance funding above.

$74,785,260
federal mitigation share
75
funded projects
113
properties mitigated
ProgramProjectsFederal share obligated
Hazard Mitigation Grant Program(HMGP)69$71,382,826
Pre-Disaster Mitigation(PDM)6$3,402,435

Most common hazards

Previous occurrences, for your mitigation plan

Every local hazard mitigation plan must document previous occurrences of each hazard. Here is that record for Guam County, sourced to OpenFEMA and refreshed weekly. Copy it straight into your plan.

HazardDateFEMA declarationType
Tropical StormOct 8, 2023EM-3601-GUEM
HurricaneMay 25, 2023DR-4715-GUDR
Tropical StormMay 22, 2023EM-3594-GUEM
BiologicalMar 27, 2020DR-4495-GUDR
BiologicalMar 13, 2020EM-3466-GUEM
TyphoonMay 7, 2019DR-4433-GUDR
TyphoonOct 1, 2018DR-4398-GUDR
TyphoonJun 5, 2015DR-4224-GUDR
Severe StormSep 10, 2014DR-4191-GUDR
Severe StormJul 29, 2004DR-1533-GUDR
TyphoonDec 8, 2002DR-1446-GUDR
TyphoonJul 6, 2002DR-1426-GUDR
EarthquakeDec 5, 2001DR-1397-GUDR

Every declaration on record

DR = Major disaster (Stafford Act) · EM = Emergency declaration · FM = Fire management assistance

Showing 13 declarations

DateNumberTypeHazardTitle
Oct 8, 2023EM-3601-GUEMTropical StormTropical Storm Bolaven
May 25, 2023DR-4715-GUDRHurricaneTyphoon Mawar
May 22, 2023EM-3594-GUEMTropical StormTyphoon Mawar
Mar 27, 2020DR-4495-GUDRBiologicalCovid-19 Pandemic
Mar 13, 2020EM-3466-GUEMBiologicalCovid-19
May 7, 2019DR-4433-GUDRTyphoonTyphoon Wutip
Oct 1, 2018DR-4398-GUDRTyphoonTyphoon Mangkhut
Jun 5, 2015DR-4224-GUDRTyphoonTyphoon Dolphin
Sep 10, 2014DR-4191-GUDRSevere StormTropical Storm Halong
Jul 29, 2004DR-1533-GUDRSevere StormHigh Winds, Flooding, And Mudslides As A Result Of Tropical Storm Tingting
Dec 8, 2002DR-1446-GUDRTyphoonSuper Typhoon Pongsona
Jul 6, 2002DR-1426-GUDRTyphoonTyphoon Chata'An
Dec 5, 2001DR-1397-GUDREarthquakeEarthquake
← Guam statewide overview · All Guam jurisdictions

How these numbers are built

Drawn from FEMA's OpenFEMA Disaster Declarations Summaries, rebuilt each week. A declaration is counted here once for each designated area it names, so a single disaster covering many localities is counted in each one. For that reason these jurisdiction counts do not sum to Guam's statewide total. This page counts declarations that named this jurisdiction as a designated area. Totals cover complete fiscal years (Oct 1 to Sep 30); the in-progress year may appear in the most-recent list but is not counted in the totals. Uses OpenFEMA data but is not endorsed by or affiliated with FEMA.

Cite this profile

Choose a citation style, then copy the formatted citation. This profile is derived from FEMA OpenFEMA data and is updated as the underlying Disaster Data build is refreshed.

Other Guam jurisdictions