Every peril Atlas models, with the model layer, calibration approach, and coverage geography. All scored on a unified 0–100 percentile and A–F grade.
Wind probability, return-period severity, and named-storm event archive 1851–today.
Burn probability, flame-length exceedance, ember exposure, and WUI classification.
1% and 0.2% annual chance flood zones, depth grids, and freeboard estimates.
SLOSH categories 1–5 with parcel-level inundation depth and recurrence.
EF-rated track database 1950–today with adjusted occurrence and severity.
Severe-hail occurrence and stone-size exceedance probability per parcel.
Convective straight-line wind, derechos, and downburst probability.
Cloud-to-ground strike density, useful for asset-class accumulation.
Peak ground acceleration at 2% in 50-year exceedance, plus liquefaction overlay.
Lahar, ashfall, and lava-flow zones for active and dormant volcanoes.
Run-up zones and inundation depth for Pacific, Atlantic, and Gulf coasts.
Days over 95°F per year, present and projected to 2050 under SSP2-4.5 / 5-8.5.
SPI/SPEI multi-year drought severity and water-stress index.
Probabilistic sea-level scenarios for 2030/2050/2100 by tide-gauge basin.
Ground-snow ground-snow load by parcel, ASCE 7-22 reference.
3-second gust at 700-year return period, ASCE design-wind reference.
Karst geology, mining-induced subsidence, and groundwater pumping zones.
Landslide susceptibility raster with post-fire debris-flow overlay.
Hard-freeze frequency, ice-storm probability, and pipe-burst exposure proxy.
PM2.5 smoke days, 5-year and 20-year trend, useful for habitability scoring.
Shoreline retreat rates per state coastal-zone study, plus armoring inventory.
Annual PM2.5, ozone, and AQI exceedances for habitability and chronic-claim risk.
Surface-water flooding from extreme rainfall events outside designated SFHA zones.
Behind-levee residual risk using USACE National Levee Database condition ratings.
Winter storm, blizzard, lake-effect snow, and heavy-snow event density per NCEI Storm Events.
Ice storm and freezing rain event frequency, mapped via NWS forecast zones over 11 years.
Excessive heat warning frequency and heat-event severity per NWS zone climatology.
Extreme cold/wind-chill and frost/freeze event frequency per NWS forecast zones.
Flash flood event density within 10-mile address radius using NCEI point-coordinate records.
Dust storm and dust devil event density. Concentrated in AZ / NM / TX panhandle.
NWS high-surf advisory frequency along Pacific, Atlantic, Gulf, and Great Lakes shorelines.
USGS Vs30 site-amplification class (NEHRP A–F) for earthquake ground-motion adjustment.
Soil liquefaction susceptibility derived from USGS Vs30 grid and HAZUS susceptibility classes.
Distance to nearest USGS Quaternary fault, used for ground-rupture and proximity rating.
NRCS SSURGO soil-class designation per parcel; foundation-stability and drainage proxy.
Debris-flow likelihood downslope of MTBS burn scars; integrates USGS post-fire models.
Avalanche hazard zones across CO / UT / MT / ID / WY / AK alpine terrain.
USGS National Coal Fields point-in-polygon; underground coal-mine subsidence exposure.
Maximum frost penetration depth per ASHRAE / IRC reference, drives foundation footing depth.
Annual freeze-thaw cycle count, pavement and foundation stress indicator.
NOAA Atlas 14 1% / 0.2% annual chance 24-hr precipitation, supports flood-design rating.
EPA AQS annual ozone exceedances, distinct from PM2.5 air-quality scoring.
EPA Map of Radon Zones (1–3) for indoor-air carcinogen exposure rating.
Florida Building Code wind-borne debris region derived from hurricane + coast-distance.
Distance to nearest ocean / Great Lakes coastline; modifier for surge, salt, and hurricane perils.
ISO PPC proxy derived from fire-station distance and hydrant availability.
Distance to nearest fire station; emergency response time proxy.
Distance to nearest fire hydrant; rural addresses without water supply rated highest exposure.
Downstream inundation exposure from USACE National Inventory of Dams (high-hazard class).
Distance to nearest NRC-licensed operating nuclear power facility (10-mile EPZ, 50-mile IPZ).
Distance to nearest natural-gas transmission pipeline per DOT EIA inventory.
Distance to nearest EPA Toxics Release Inventory facility; chronic exposure indicator.
Distance to nearest EPA Superfund (CERCLA) National Priorities List site.
Distance to nearest EPA RCRA-permitted hazardous-waste handler.
Each peril is normalized to a 0–100 percentile against the national distribution, mapped to an A–F grade with documented thresholds, and accompanied by the model layer, calibration vintage, and parcel-level value used in the calculation. No peril is a black box.