Its a Flood, Dam It! Identifying the End of Texas Drought John W. Nielsen-Gammon Texas State Climatologist D. Brent McRoberts Department of Atmospheric Sciences High-Resolution Drought Monitor Daily Stage 4 Precipitation Analysis (NWSs River Forecast Centers) Historical COOP observations PRISM climate normals Improved drought metrics High-Resolution Drought Monitor Phase 1: Texas Prototype Phase 2: National Application (USDA) Phase 3: From Experimental to Operational (NOAA) Texas Drought, Phase 2 information SPI Blend: SPI calculated from a range of accumulation intervals instead of a single accumulation interval Minimum SPI blend: Lowest SPI value from blends ranging from 2 months to 2 years Shows worst of short- & long-term conditions Texas Water Storage Current Value Value when PDSI went positive Start of Drought Lake Arrowhead Palo Pinto Reservoir Medina Lake In Progress Phase 3: Removing radar-caused errors and artifacts from Stage 4 precip Beam blockage Range-dependence Overshooting Melting level Beam filling Rainfall estimation biases Future Validation Testing as NLDAS-2 input Contact Information