Data-source registry.
INSIT3 prefers authoritative public issuers and uses free model services only where their evidence class and limitations can be stated precisely.
| Source | Role | Freshness | Coverage note | Documentation |
|---|---|---|---|---|
| NWS API | Active alerts and days 1–7 fallback point forecasts | Minutes to source cadence | All points in NWS service areas; no uniform 14-day product | SOURCE ↗ |
| NOAA CPC | Days 8–14 temperature, precipitation, and selected hazards | Daily | Probabilistic outlooks; not every hazard | SOURCE ↗ |
| NOAA NCEI Storm Events | Rolling 10-year reported-event history | Monthly publication lag | County reports; not unique storms | SOURCE ↗ |
| NOAA Climate at a Glance | 1991–2020 normals and county time series | Monthly | Temperature and precipitation proxies | SOURCE ↗ |
| FEMA National Risk Index | Supplemental relative-risk baseline | Dataset release cadence | County and county-equivalent baseline, including Alaska; not active or 10-year history | SOURCE ↗ |
| U.S. Census Connecticut crosswalk | Legacy county towns to current planning regions | Geography release cadence | Official geography mapping; old weather totals are not automatically reassigned | SOURCE ↗ |
| NASA FIRMS | Satellite active-fire detections | Near real time | API key required; hotspot is not a perimeter | SOURCE ↗ |
| EPA AirNow | AQI, PM, ozone, and local forecasts | Usually hourly | Preliminary; API key required | SOURCE ↗ |
| NOAA NHC | Tropical cyclone, wind, and storm-surge products | Advisory cadence | Event-driven and coastal | SOURCE ↗ |
| NOAA SPC | Convective and fire-weather outlooks | Product cadence | Severe weather to day 8; not deterministic events | SOURCE ↗ |
| NOAA WPC | Rainfall, excessive-rain, and winter guidance | Product cadence | Excessive-rain outlook to day 5 | SOURCE ↗ |
| NOAA NWPS / USGS | River observations and forecasts | Station/product cadence | Gauge and modeled-reach coverage varies | SOURCE ↗ |
| Open-Meteo | Cached 14-day model aggregation | Once daily at 12:00 UTC | All 482 listed county and county-equivalent representative points | SOURCE ↗ |
No false precision
- No authoritative deterministic nationwide day-14 forecast exists for all 19 hazards.
- Raw nationwide lightning-strike data have redistribution restrictions; public NOAA summaries are less granular.
- Urban flooding, smoke, atmospheric-river events, ice accretion, and blizzards lack complete uniform national feeds across all horizons.
- Alaska NOAA county-coded history remains unscored; FEMA NRI county-equivalent values are supplemental only.
- Connecticut legacy county totals are not reassigned to current planning regions; the official Census town crosswalk is disclosed instead.
- Climate projections represent meteorological variables, not trustworthy local event forecasts for tornadoes, hail, cyclones, surge, wildfire occurrence, or urban inundation.