Figure2. A four-panel display of the KHGX WSR-88D from the Stage III PPS at 0800 UTC 19 March 1999. (a) The Stage I unbiased hourly digital precipitation array (HDP). (b) The Stage II adjusted radar with the bias applied to the radar rainfall estimates. (c) Gauge-Only field showing the location and amounts of hourly rainfall reports. The gauges with the heaviest rainfall are annotated as SBMT2 and LGRT2. (d) The multisensor field, which is the Stage II adjusted radar field blended with the gauge data. The gauge data replaces the radar estimates in grid points where gauge reports exist. The applied Stage II bias is circled toward the bottom.