NHC WSR-88D Tropical Cyclone Algorithm Requirements


Priority 1: Storm position and track. Calculate motion.

Priority 2: Determine the maximum single-Doppler component in the radar volume.

Priority 3: Determine the maximum total wind in the radar volume.

Priority 4: Determine the total wind field at the level of maximum wind. Identify radii of maximum wind, 64 kt and 34 kt winds. Record parameters for trend analysis and quality control.

Priority 5: Determine the total wind field at 10 m. Identify radii of maximum wind, 64 kt and 34 kt winds. Record parameters for trend analysis and quality control.

Priority 6: Construct horizon-to-horizon vertical cut through maximum wind.

Priority 8: Project rainfall accumulations for range of possible storm motions.

Priority 9: Hodograph of vertical variation of the horizontal mean wind from surface to 200 mb.



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