Natural disaster risk in San Juan Municipio, Puerto Rico
Puerto Rico · population 341,981 · FIPS 72127
Overall: insufficient data risk
FEMA gives San Juan Municipio no composite risk score.
Drought now: Yes: D1 Moderate Drought, 17 weeks
Yes. On the U.S. Drought Monitor map valid 13 October 2026, 100% of San Juan Municipio is in D1 Moderate Drought. Some of it has been at D1 or worse for 17 weeks in a row.
Drought in San Juan Municipio: the last 52 weeks · droughtmonitor.unl.edu
The U.S. Drought Monitor is jointly produced by the National Drought Mitigation Center at the University of Nebraska-Lincoln, the United States Department of Agriculture, the National Oceanic and Atmospheric Administration and the National Aeronautics and Space Administration. Map courtesy of NDMC.
Risk, loss, vulnerability and resilience
| Measure | Rating and score |
|---|---|
| Overall risk Expected annual loss, adjusted for social vulnerability and community resilience. |
Insufficient data |
| Expected annual loss About $434.5 million a year, on average, across all 18 hazards. |
Relatively high 98.9 |
| Social vulnerability Higher means people may find it harder to prepare and recover. |
Data unavailable |
| Community resilience Higher means a stronger ability to prepare, adapt and recover. |
Data unavailable |
Risk by hazard
FEMA's risk rating for each of 18 natural hazards in San Juan Municipio, highest first. "Not applicable" means the hazard is not modelled here.
| Hazard | Risk rating and score |
|---|---|
| Avalanche | Not applicable |
| Coastal flooding | Insufficient data |
| Cold wave | Insufficient data |
| Drought | Insufficient data |
| Earthquake | Insufficient data |
| Hail | Insufficient data |
| Heat wave | Insufficient data |
| Hurricane | Insufficient data |
| Ice storm | Not applicable |
| Landslide | Insufficient data |
| Lightning | Insufficient data |
| Inland (riverine) flooding | Insufficient data |
| Strong wind | Insufficient data |
| Tornado | Insufficient data |
| Tsunami | Insufficient data |
| Volcanic activity | Insufficient data |
| Wildfire | Insufficient data |
| Winter weather | Insufficient data |
FEMA disaster declarations for San Juan Municipio
Federal declarations that designated San Juan Municipio, since 1 Jan 2024 (the period this site keeps from OpenFEMA). Older declarations are in FEMA's own dataset.
Yes. San Juan Municipio has been named in 1 FEMA declaration since 1 Jan 2024. The latest is EM-3610-PR (Tropical Storm Ernesto), declared 13 Aug 2024.
| Declaration | Kind | Incident | Declared | Individual assistance here |
|---|---|---|---|---|
| EM-3610-PR | Emergency | Tropical Storm Ernesto | 13 Aug 2024 | No |
All FEMA declarations in Puerto Rico, with estimated apply-by dates · Open FEMA deadlines
This product uses the Federal Emergency Management Agency's OpenFEMA API, but is not endorsed by FEMA. The Federal Government or FEMA cannot vouch for the data or analyses derived from these data after the data have been retrieved from the Agency's website(s). Dataset: Disaster Declarations Summaries - v2.
How to read these ratings
- Ratings run in five steps: very low, relatively low, relatively moderate, relatively high and very high. They compare a county with every other US county; they are not a measure of danger on their own.
- Scores run from 0 to 100 and are national percentiles. The bar shows the score: a score of 80 means a higher value than 80% of US counties.
- Overall risk combines the expected annual loss with social vulnerability and community resilience.
- Expected annual loss is the average yearly loss to buildings, people and agriculture the model expects from all 18 hazards.
- Social vulnerability describes how hard it may be for people to prepare for and recover from a disaster. Higher is worse.
- Community resilience describes a community's ability to prepare, adapt and recover. Higher is better.
- "Not applicable" means FEMA does not model that hazard there (for example, hurricanes far inland).
About this data
Source: FEMA National Risk Index, version 1.20, released December 2025, published by the Federal Emergency Management Agency (US public domain). About the National Risk Index. The index is a model of relative risk built from historical hazard records, what is exposed and community factors. It is not a forecast, it does not describe any single property, and it is not insurance or financial advice. For decisions about a specific address, check FEMA's flood maps and your local emergency management office.
Questions
What is the natural disaster risk in San Juan Municipio, Puerto Rico?
FEMA's National Risk Index rates the overall risk in San Juan Municipio as insufficient data. That is a comparison with other US counties, not a forecast.
What is the flood risk in San Juan Municipio?
FEMA rates inland (river and rain) flooding risk in San Juan Municipio as insufficient data. For a specific property, check the FEMA flood map and your local floodplain office.
Has San Juan Municipio had a FEMA disaster declaration?
Yes. San Juan Municipio has been named in 1 FEMA declaration since 1 Jan 2024. The latest is EM-3610-PR (Tropical Storm Ernesto), declared 13 Aug 2024.
Is San Juan Municipio in a drought?
Yes. On the U.S. Drought Monitor map valid 13 October 2026, 100% of San Juan Municipio is in D1 Moderate Drought. Some of it has been at D1 or worse for 17 weeks in a row.
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