The Data

Reliable atmospheric data accessible to all.

Most historical weather data is a patchwork of gaps and errors. Your model is only as good as what goes in — so we obsessed over what goes in.

What you can query

Severe Weather Forensics

Event analysis and attribution for hail, tornado, wind, and freezing rain.

Event ReportsStorm AttributionDamage Assessment

Historical Archives

Terabytes of global 15km gridded history, with 1km / 2km hi-res across CONUS.

Gridded HistorySevere Weather HistoryMultiday Analysis

Station Intelligence

Records back to 1950 across 8,000+ global stations — normals, history, and trends.

Station SearchClimate NormalsStation History

Risk Assessment

0–10 risk scores for wildfire, flood, hail, wind, tornado, and rainfall — anywhere in CONUS.

Wildfire RiskFlood RiskWeather RiskProperty Data

Visual Intelligence

Interactive maps and severe-weather analysis, generated on demand.

Severe Weather MapHurricane Swath Map

Hurricane & Forecasting

Tropical cyclone tracking with AI-enhanced ensembles, plus 10-day global forecasts.

Tropical CyclonesGlobal ForecastHurricane Quicklook

The Sources

barocline contains a curated stack of public, partner, and internally-processed sources.

15km global gridded reanalysisERA5 + NOAA GFS, hourly resolution back to 1940.

2km CONUS hi-res gridded historyOptimized for property and asset-level analysis.

1km CONUS severe weather climatologyHail and tornadic storm attribution, developed by the Athenium meteorology team.

8,000+ global weather stationsRecords back to 1950, METAR/SYNOP-derived, gap-filled to production standards.

30-year climate normalsHourly, daily, and monthly normals for any station in the network.

NOAA SPC ground-truth storm reportsIntegrated with attribution data for forensic event reconstruction.

Live tropical cyclone forecastsActive basins with ensemble track and intensity.

What makes this different from public alternatives is what you don’t have to build. Raw NOAA data is free — but turning it into validated answers takes infrastructure. Athenium has been doing that work for federal agencies, reinsurers, IBM, and others for decades. barocline is the first time it’s available to everyone.

Sample data costs1 credit per 120 lines returned