CiteBrief prototype replay: Hurricane Harvey, 2017 (public data)

Speed

Radar: Houston/Galveston radar lowest-tilt reflectivity (dBZ 10 to 70), every third scan, over OpenStreetMap. Pins: river gauges, colored by NWS flood category; gray means not reporting or no NWS category.

River gauges USGS gage height

Gauge	Stage ft	Category	Trend

NWS products in effect

Sources

Radar: NOAA/NWS NEXRAD (Next-Generation Radar) Level II, KHGX (Houston/Galveston), via NOAA Open Data Dissemination on AWS. Public domain U.S. Government data.
River levels: U.S. Geological Survey (USGS) gauges, gage height (NWIS instantaneous values).
Flood categories: current National Weather Service thresholds, which may differ from 2017.
Warnings: NWS Houston/Galveston VTEC (Valid Time Event Code) products, from the Iowa Environmental Mesonet VTEC archive. Banner text is summarized; follow each link for the original product.

Prototype. Historical replay for illustration only. Not affiliated with or endorsed by any government agency.