Natural Hazard Risk in Pennsylvania
The risk score (0–100) combines expected annual loss from 18 natural hazards with social vulnerability and community resilience. Higher = greater relative risk. Scores compare counties across the United States.
See what's happening right now on the live map →| County | Risk score | Rating | Expected annual loss | Population |
|---|---|---|---|---|
| Philadelphia | 99.6 | Very High | $667.1M | 1,602,305 |
| Allegheny | 98.1 | Relatively High | $354.2M | 1,249,907 |
| Montgomery | 96.8 | Relatively High | $296.7M | 856,020 |
| Lancaster | 95 | Relatively High | $170M | 552,633 |
| Bucks | 94.8 | Relatively High | $202.6M | 646,216 |
| Lehigh | 93.9 | Relatively Moderate | $128.3M | 373,891 |
| Delaware | 92.9 | Relatively Moderate | $134.9M | 576,366 |
| Berks | 92.7 | Relatively Moderate | $119.5M | 428,624 |
| Chester | 91.9 | Relatively Moderate | $172.6M | 534,152 |
| Luzerne | 91.6 | Relatively Moderate | $88M | 325,461 |
| Dauphin | 91.1 | Relatively Moderate | $99.8M | 286,115 |
| York | 90.4 | Relatively Moderate | $106M | 456,310 |
| Northampton | 90 | Relatively Moderate | $90.4M | 312,822 |
| Lackawanna | 89.9 | Relatively Moderate | $72.4M | 215,724 |
| Westmoreland | 87.8 | Relatively Moderate | $76.3M | 354,424 |
| Cumberland | 86.2 | Relatively Moderate | $68.7M | 259,125 |
| Schuylkill | 85.3 | Relatively Moderate | $48.9M | 142,966 |
| Monroe | 85.1 | Relatively Moderate | $56.9M | 168,181 |
| Erie | 84.1 | Relatively Moderate | $47.6M | 270,695 |
| Washington | 83.1 | Relatively Moderate | $57.4M | 209,274 |
| Fayette | 82.2 | Relatively Moderate | $37.1M | 128,759 |
| Lebanon | 79.9 | Relatively Low | $43.2M | 143,188 |
| Lycoming | 79.6 | Relatively Low | $40.9M | 114,105 |
| Butler | 79.3 | Relatively Low | $47.7M | 193,593 |
| Northumberland | 79.2 | Relatively Low | $37.3M | 91,636 |
| Mercer | 77.7 | Relatively Low | $34.1M | 110,623 |
| Blair | 77.7 | Relatively Low | $33.9M | 122,666 |
| Cambria | 76.4 | Relatively Low | $31.6M | 133,467 |
| Franklin | 76.4 | Relatively Low | $37.7M | 155,896 |
| Crawford | 76 | Relatively Low | $26.8M | 83,927 |
| Beaver | 75.3 | Relatively Low | $35.5M | 168,155 |
| Bradford | 73.1 | Relatively Low | $32.2M | 59,840 |
| Armstrong | 69.3 | Relatively Low | $27.8M | 65,530 |
| Mifflin | 69.3 | Relatively Low | $18.4M | 46,143 |
| Bedford | 68.2 | Relatively Low | $24.2M | 47,550 |
| Centre | 68 | Relatively Low | $24.9M | 158,157 |
| Adams | 67.5 | Relatively Low | $27.2M | 103,797 |
| Clearfield | 67.1 | Relatively Low | $22.3M | 80,509 |
| Lawrence | 66.1 | Relatively Low | $24.6M | 86,035 |
| Pike | 65.9 | Relatively Low | $24.5M | 58,432 |
| Warren | 65.6 | Relatively Low | $23.1M | 38,587 |
| Somerset | 64.2 | Relatively Low | $21.9M | 74,099 |
| Indiana | 63.7 | Relatively Low | $18.7M | 83,148 |
| Columbia | 62.1 | Relatively Low | $24.4M | 64,676 |
| Tioga | 59.8 | Relatively Low | $18.6M | 41,034 |
| Carbon | 59.4 | Relatively Low | $21.6M | 64,728 |
| Jefferson | 57.9 | Relatively Low | $14M | 44,472 |
| Wayne | 56.3 | Relatively Low | $17.2M | 51,146 |
| Venango | 55.6 | Relatively Low | $15.8M | 50,453 |
| Union | 55.2 | Relatively Low | $14.4M | 42,665 |
| Greene | 55.1 | Relatively Low | $17M | 35,904 |
| Snyder | 54.3 | Relatively Low | $15M | 39,723 |
| McKean | 53.8 | Relatively Low | $15M | 40,379 |
| Susquehanna | 53.6 | Relatively Low | $17.9M | 38,411 |
| Perry | 53.1 | Relatively Low | $18.2M | 45,809 |
| Clinton | 51.8 | Relatively Low | $13.8M | 37,434 |
| Huntingdon | 50.3 | Relatively Low | $15.5M | 44,088 |
| Elk | 45.2 | Relatively Low | $15.5M | 30,973 |
| Wyoming | 44.8 | Relatively Low | $13.5M | 26,048 |
| Juniata | 38.8 | Very Low | $8.8M | 23,482 |
| Clarion | 30 | Very Low | $8.7M | 37,191 |
| Potter | 28.1 | Very Low | $7.7M | 16,396 |
| Forest | 19.9 | Very Low | $5M | 6,973 |
| Montour | 14.7 | Very Low | $5.5M | 18,104 |
| Cameron | 12.6 | Very Low | $4.2M | 4,535 |
| Sullivan | 10.7 | Very Low | $4.1M | 5,840 |
| Fulton | 7.8 | Very Low | $4.1M | 14,556 |
🏛️ Federal disaster declarations (last 2 years)
No federal disaster declarations in the last 2 years.
Major disaster (DR) and emergency (EM) declarations unlock federal assistance for the designated areas. Source: FEMA / OpenFEMA.
Other states
AlabamaAlaskaArizonaArkansasCaliforniaColoradoConnecticutDelawareDistrict of ColumbiaFloridaGeorgiaHawaiiIdahoIllinoisIndianaIowaKansasKentuckyLouisianaMaineMarylandMassachusettsMichiganMinnesotaMississippiMissouriMontanaNebraskaNevadaNew HampshireNew JerseyNew MexicoNew YorkNorth CarolinaNorth DakotaOhioOklahomaOregonRhode IslandSouth CarolinaSouth DakotaTennesseeTexasUtahVermontVirginiaWashingtonWest VirginiaWisconsinWyoming
Data: FEMA National Risk Index (updated ~annually). AlertAtlas is not an official warning service — always follow local authorities.