NOAA MRMS radar QPE archive, Texas Hill Country flood, 3-5 July 2025

Summary. NOAA/NSSL Multi-Radar Multi-Sensor quantitative precipitation estimates for the July 2025 event, from the Iowa State University mtarchive mirror: 1 km CONUS grids, hourly (MultiSensor_QPE_01H_Pass2, gauge-corrected) and higher-frequency radar-only products.

Scenarify role. Rain raster time series: directory of per-timestep depth-increment rasters with the timestamp in the filename and a constant step. Convert GRIB2 to GeoTIFF (mm), clip to the domain, reproject to EPSG:6343.

Access. Plain HTTPS directory listing per day, no auth: https://mtarchive.geol.iastate.edu/YYYY/MM/DD/mrms/ncep/<product>/, files MRMS_<product>_00.00_YYYYMMDD-HHMMSS.grib2.gz.

Format and CRS. GRIB2 (gzip), 0.01 deg lat/lon grid, mm. Pass2 hourly files arrive ~1 h after valid time.

Coverage. CONUS; pull 2025-07-03 00Z through 2025-07-05 12Z for the Kerr County event. Example file: MultiSensor_QPE_01H_Pass2_00.00_20250704-010000.grib2.gz (valid 2025-07-04 01:00 UTC).

Provenance and caveats. The Kerr County hydrologic assessment (Waterway Engineering, 2025-07-24) used MRMS and found 9.78 in over 6 h with a 4.04 in peak hour near the South Fork; gauge correction is weak where the maximum fell because gauge coverage is sparse. Cross-check against NCEP Stage IV (4 km) and the USGS/UGRA gauges.

Related. usgs-nwis-upper-guadalupe-gauges, noaa-atlas14-kerrville-design-rainfall.

Dataset extent

Data and Resources

  • MRMS MultiSensor QPE 1 h Pass2, 2025-07-03GRIB2 (directory)

    24 hourly files.

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  • MRMS MultiSensor QPE 1 h Pass2, 2025-07-04GRIB2 (directory)

    Event day.

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  • MRMS MultiSensor QPE 1 h Pass2, 2025-07-05GRIB2 (directory)

    Recession.

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  • MRMS product index, 2025-07-04HTML

    All MRMS products for the day (RadarOnly_QPE_15M, PrecipRate, etc.).

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Additional Info

Field Value
Source https://mtarchive.geol.iastate.edu/
Version 2026-11-05
Author NOAA NSSL MRMS; Iowa Environmental Mesonet archive
Author Email NOAA NSSL MRMS; Iowa Environmental Mesonet archive
Maintainer William Mobley
Maintainer Email William Mobley
Temporal Coverage Start 2025-07-03
Temporal Coverage End 2025-07-05
Spatial Coverage {"type": "Polygon", "coordinates": [[[-99.45, 29.85], [-98.95, 29.85], [-98.95, 30.25], [-99.45, 30.25], [-99.45, 29.85]]]}