NOAA Multi-Radar/Multi-Sensor (MRMS) Operational Product Suite
Governmental GRIB2 grid product family integrating multiple radars, observations, lightning, satellite data, and forecast models. It publishes radar-estimated hail, rotation, reflectivity, precipitation-rate, and accumu…
Questions this answers
2 · best fit firstFor a UTC-pinned U.S. grid and interval, MRMS Version 12.2 publishes Maximum Estimated Size of Hail in mm and 30-/60-minute MESH hail-swath grids on a documented two-minute cycle. This is Strong radar/multi-sensor estimated location and severity evidence, not reported ground truth.
For a UTC-pinned U.S. grid and event time, MRMS Version 12.2 publishes two-minute precipitation-rate grids in mm/hour and RadarOnly one-hour QPE grids in mm. These provide useful precipitation evidence near the event while remaining algorithmic radar/multi-sensor estimates rather than station observations.
Fields it delivers
3 fieldsMRMS documentation provides operational domains for the United States, Puerto Rico/U.S. Virgin Islands, and Guam. The separately assigned territories are listed independently and are not implied by US.
The cited publisher route provides the data through a direct public download, API, or lookup without a subscription, order, membership, or per-use payment. Commercial services may repackage the data, but they are not required to access this source.
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