FEMA Records
3
Total declarations
If you are in immediate danger, call 911.
The data below is historical (NOAA Storm Events / FEMA), not a live alert. For current warnings and evacuation orders, check the National Weather Service, Ready.gov, or FEMA.gov.
Guam · FEMA + NOAA + National Risk Index
Guam (County-equivalent), GU
3 FEMA disaster declarations (2023–2024), with a FEMA National Risk Index rating of null. Most common hazard: Tropical Storm.
- 3
- FEMA declarations
- 1
- Major disasters
- Tropical Storm
- Top hazard
How does Guam (County-equivalent) County compare?
FEMA disaster declarations, this county versus the Guam county average and the national county average.
- Guam (County-equivalent) County
- 3
- Guam county avg
- 3
- National county avg
- 3.7
How disaster-prone is Guam (County-equivalent) County?
Guam (County-equivalent) County, Guam has recorded 3 FEMA disaster declarations between 2023 and 2024, of which 1 were classified as Major Disaster declarations (DR) requiring federal individual and public assistance. That puts the county's average at 3.0 declarations per year across a 1-year record, or roughly 0% above the Guam county average of 3.0 and 20% below the national county average of 3.7. Declaration counts reflect federal recognition of event severity, not pure hazard frequency, smaller incidents handled locally never appear in FEMA's ledger.
The dominant disaster type on record is Tropical Storm, with 2 of 3 declarations falling under this category. FEMA's National Risk Index assigns this county an overall risk rating of (composite score N/A/100), driven by an Expected Annual Loss rating of Relatively High equivalent to roughly $215.6M in annualized losses. Social vulnerability scores Data Unavailable and community resilience scores Data Unavailable - two factors that modify raw hazard exposure into actual harm. The single highest-risk natural hazard identified for this county is Coastal Flooding ().
NFIP flood insurance claims data for this county is not present in the FEMA claims extract, which typically indicates either low historical flood activity or low policy penetration. Taken together, these indicators place Guam (County-equivalent) County at a low relative risk level for federally recognized disasters. Households should pair this historical lens with forward-looking hazard maps, flood zones, wildfire risk overlays, and seismic zones published by FEMA and state emergency management, before making preparedness, insurance, or relocation decisions.
Risk Assessment
How Guam (County-equivalent) County's disaster history compares to state and national averages.
Risk Level
Low
vs. Guam Avg
+0%
State avg: 3.0
vs. National Avg
-20%
National avg: 3.7
Avg Per Year
3.0
Over 1 years
FEMA NRI 8-hazard radar - Guam (County-equivalent) County
The radar plots Guam (County-equivalent) County's relative exposure to the eight headline natural hazards used by the FEMA National Risk Index. Each axis is the qualitative NRI risk rating (Very Low through Very High) re-expressed on a 0-100 scale so that the polygon shape lets you compare a county against another at a glance.
NRI Source
FEMA 2023
Latest NRI release
County FIPS
66010
GU state code
Source: FEMA National Risk Index FEMA National Risk Index Per-county per-hazard ratings, 2023 release
Disaster Types
Breakdown of 3 FEMA disaster declarations in Guam (County-equivalent) County by incident type.
Tropical Storm 2
Hurricane 1
Declaration Types
FEMA categorizes declarations as Major Disasters (DR), Emergencies (EM), or Fire Management Assistance (FM).
Emergency - 2 66.7%
of all 3 declarations
Major Disaster - 1 33.3%
of all 3 declarations
FEMA Declarations Timeline
Disaster declarations per year for Guam (County-equivalent) County.
| Year | Declarations | |
|---|---|---|
| 2024 | 1 | |
| 2023 | 2 | |
Disaster Declarations
All 3 FEMA disaster declarations for Guam (County-equivalent) County, Guam.
| DR# | Title | Type | Incident | Date |
|---|---|---|---|---|
| 3601 | TROPICAL STORM BOLAVEN | EM | Tropical Storm | 2023-10-08 |
| 4715 | TYPHOON MAWAR | DR | Hurricane | 2023-05-25 |
| 3594 | TYPHOON MAWAR | EM | Tropical Storm | 2023-05-22 |
Storm Events in Guam
NOAA severe weather data for Guam (2015–2025). Storm event data is tracked at the state level.
| Storm Type | Events | Fatalities | Injuries | Property Damage |
|---|---|---|---|---|
| Marine Thunderstorm Wind | 9,269 | 22 | 7 | $50.0M |
| Waterspout | 1,223 | 0 | 2 | $25.0K |
| Marine Tropical Storm | 341 | 29 | 0 | $0 |
| Drought | 150 | 0 | 0 | $16.5K |
| Marine Hurricane/Typhoon | 85 | 0 | 0 | $500.0K |
Source: NOAA Storm Events Database NOAA Storm Events Database State-level aggregated data, 2015–2025
FEMA National Risk Index
FEMA's composite risk score combining 18 natural hazard types, social vulnerability, and community resilience for Guam (County-equivalent) County.
Overall Risk
Score: N/A/100
Expected Annual Loss
Relatively High
$215.6M/year
Social Vulnerability
Data Unavailable
Community Resilience
Data Unavailable
Hazard Risk Breakdown
Risk rating for each of the 18 FEMA NRI natural hazard types in Guam (County-equivalent) County.
Coastal Flooding
Earthquake
Hurricane
Tsunami
Source: FEMA National Risk Index (NRI) FEMA National Risk Index (NRI) Ratings reflect relative scores among all US counties. Data: hazards.fema.gov/nri
Disaster Preparedness Guides
Related
Frequently Asked Questions
How many natural disasters has Guam (County-equivalent) County, Guam had?
Guam (County-equivalent) County, Guam has received 3 FEMA disaster declarations from 2023 to 2024. Of these, 1 were major disaster declarations.
What is the most common disaster type in Guam (County-equivalent) County?
The most common disaster type in Guam (County-equivalent) County is Tropical Storm, with 2 declarations. Other disaster types include Hurricane (1).
How does Guam (County-equivalent) County's disaster risk compare to the Guam average?
Guam (County-equivalent) County has 3 disaster declarations, which is 0% higher than the Guam county average of 3.0 declarations. Compared to the national county average of 3.7, it is 20% lower.
How many major FEMA disaster declarations has Guam (County-equivalent) County received?
Guam (County-equivalent) County has received 1 major disaster declaration, representing 33% of all 3 disaster declarations. Major disaster declarations typically involve significant damage requiring federal assistance.
What types of storms are most common in Guam?
The most common storm types in Guam include Marine Thunderstorm Wind (9,269 events), Waterspout (1,223 events), Marine Tropical Storm (341 events). NOAA storm event data covers severe weather from 2015 to 2025.
What was the worst year for disasters in Guam (County-equivalent) County?
The most active year for disaster declarations in Guam (County-equivalent) County was 2023, with 2 declarations. The county has FEMA disaster data spanning 2023 to 2024.
What is the overall disaster risk level for Guam (County-equivalent) County?
Based on FEMA declaration history, Guam (County-equivalent) County has a low disaster risk level with 3 total declarations. This county has relatively few disaster declarations compared to the national average.
What is the FEMA National Risk Index score for Guam (County-equivalent) County?
According to the FEMA National Risk Index, Guam (County-equivalent) County, Guam has an overall risk score of N/A out of 100 (null). The county's social vulnerability rating is Data Unavailable and community resilience is Data Unavailable. The Expected Annual Loss (EAL) score is Relatively High, representing $215.6M in annualized losses.
Which natural hazard poses the greatest risk to Guam (County-equivalent) County?
Based on FEMA NRI data, the highest-risk natural hazard in Guam (County-equivalent) County is Coastal Flooding (risk rating: null). Other significant hazards include Earthquake (null) and Hurricane (null). These scores are based on FEMA's analysis of historical event frequency, exposed assets, and community vulnerability.
Data Sources & Methodology
Disaster declaration data comes from the FEMA OpenFEMA Disaster Declarations Summaries v2 API, which includes all federally declared disasters, emergencies, and fire management assistance grants.
Storm event data is sourced from the NOAA Storm Events Database (2015–2025), which tracks significant weather events including thunderstorms, tornadoes, floods, and winter storms.
This data is provided for informational purposes only. FEMA disaster declarations represent federal response actions and may not capture all local emergencies or weather events.
What this means for Guam (County-equivalent)
Guam (County-equivalent), GU has 3 FEMA disaster declarations on record, a low historical disaster load, 0% above the Guam county average.
- Its most common federal declaration type is emergency (2 of 3) - know the hazards most likely here before they happen. Guam overview
- See how this county ranks against the rest of the country for disaster frequency. Most-disaster rankings
- Read how to read FEMA declarations, NRI risk scores, and what they do and don't tell you. Disaster-data guide
Historical declaration counts describe past federal response, not a forecast. For current threats, follow the National Weather Service and local officials; in an emergency call 911.
Read our methodology - how this data is sourced, computed, and verified.
All federal data sources used on this page
- FEMA OpenFEMA, Disaster Declarations Summaries v2 - all federally-declared disasters for this county. fema.gov/openfema/disaster-declarations
- FEMA National Risk Index (NRI) - per-county per-hazard risk ratings and expected annual loss. hazards.fema.gov/nri
- NOAA NCEI Storm Events Database - state-level storm/severe-weather event records, 2015–2025. ncdc.noaa.gov/stormevents
Data sourced from official public datasets. See our methodology for details. Retrieved and formatted by PlainHazard Editorial
Verify with FEMA → · Verify with FEMA NRI → · Verify with NOAA →
Every figure on PlainHazard is rendered directly from FEMA federal disaster data, no number is typed in by an editor. This page draws directly on FEMA federal disaster data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.