SSM/I rain rates and storm width for the TRaP product were generated from a 14:25 UTC (9:25 CDT) pass on the 27th.
The mean satellite rain rate (Ravg) computed for Georges at this time was 0.39 in/hr
(9.9 mm/hr). Multiplying Ravg by Georges' areal rain width D (318
nautical miles, 589 km) along the track and then dividing by the GOES estimate of Georges' motion V
(6 knots, 11 km/hr), yields a rainfall potential (TRaP) of 20.8 inches (528 mm).