About
About AtmosDays
AtmosDays puts public US weather data in one fast, ad-free place, and keeps a day-by-day weather record for each job, site or claim so the paperwork is ready when the weather becomes a question.
It is built and run by Eagle Eye Insights LLC, a small software company in Texas. The weather pages are free and need no account. The AtmosDays app adds records, PDFs and heads-up emails for crews, energy sites and claims; see pricing.
Where the numbers come from
Every number on AtmosDays is public data from US government weather agencies, plus the European ECMWF model's open data. Nothing is invented or "adjusted"; each page and PDF names its source.
| What | Source | How often it updates |
|---|
| Forecasts, current conditions, watches and warnings | National Weather Service (api.weather.gov) | Every few minutes |
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| Radar | NOAA NEXRAD Level III via the Unidata/AWS open data bucket; national mosaic tiles from Iowa State University | Every 2 to 5 minutes |
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| Satellite | NOAA GOES-East and GOES-West (NESDIS STAR) | Every 5 to 10 minutes |
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| Severe storm, fire weather and storm reports | NOAA Storm Prediction Center | Several times a day; reports as they come in |
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| Flooding rain outlooks | NOAA Weather Prediction Center | Several times a day |
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| Hurricanes | National Hurricane Center; Hurricane Hunter data from NHC | Every 3 to 6 hours; recon as it comes in |
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| Forecast model maps | NOAA GFS, HRRR and HREF (public domain); ECMWF open data (CC BY 4.0) | As each model run finishes |
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| Soundings | NWS weather balloons via Iowa State University; HRRR and GFS model soundings | Twice a day; model soundings hourly |
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| Past weather and normals | NOAA NCEI daily summaries and 1991-2020 U.S. Climate Normals | Daily; normals are fixed |
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| Diesel and material prices | U.S. EIA and Bureau of Labor Statistics, via FRED (Federal Reserve Bank of St. Louis) | Weekly or monthly |
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| Address lookup | US Census Bureau geocoder and OpenStreetMap | When you search |
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What the records can and can't show
- Measured weather comes from the nearest station. Rain and wind can differ across town, and the nearest NOAA station can be several miles away. Each record shows the station and its distance.
- Storm reports are not proof of damage. A hail or wind report near an address shows storm exposure in the area. Inspect the property.
- Contracts decide delay days. AtmosDays compares the weather with the 30-year normal; your contract decides which days count, the notice you must give and whether the weather stopped critical work.
- Forecasts are forecasts. They come straight from the National Weather Service and forecast models and can be wrong, especially more than a few days out.
- Official warnings come from the National Weather Service. For life-safety decisions, follow your local NWS office and emergency officials.
Contact
Questions, corrections or a plan for a larger team: contact@eagleeyeinsightsllc.com.