* NE PACIFIC TC GENESIS INDEX * * GFS VERSION * * EP972019 08/20/19 12 UTC * TIME (hr) 0 6 12 18 24 36 48 60 72 84 96 108 120 Prob of Genesis 51% 84% LAT (deg N) 14.4 14.2 14.4 14.6 14.8 15.0 15.1 15.0 15.2 15.6 15.8 16.2 16.6 LON (deg W) 124.9 127.7 128.4 129.2 130.1 132.1 134.2 136.2 137.7 139.5 140.9 142.5 144.4 DTL (km) 1753 1997 2036 2077 2128 2270 2239 2036 1875 1677 1528 1351 1145 TRACK SOURCE AP07 AP07 AP07 AP07 AP07 AP07 AP07 AP07 AP07 AP07 AP07 AP07 AP07 TCGI 0-48h Genesis Forecast: 51% is 1.2 times the sample mean ( 44%) TCGI 0-120h Genesis Forecast: 84% is 1.5 times the sample mean ( 56%) --------------------------------------------------------------------------------------------- INDIVIDUAL PREDICTOR CONTRIBUTIONS TO PROBABILITY OF GENESIS ******* 48-HR ****** ******* 120-HR ****** AVG TCGI CONT AVG TCGI CONT DIVERGENCE -2.0 0.1 2.3% -2.0 0.0 5.7% VORTICITY 1.6 2.2 16.1% 1.5 2.4 25.4% VERTICAL SHEAR 12.9 14.5 10.8% 14.9 8.9 32.8% RH 79.1 79.4 7.9% 74.8 78.6 7.7% GOES 42.9 20.1 3.2% 42.8 20.1 3.4% DVORAK 0.9 1.5 10.2% 0.9 1.5 9.3% --------------------------------------------------------------------------------------------- PREDICTOR DEFINITIONS (Averaged Over 500 km Radius) GENESIS CLIM = Climatological Prob (%) of Genesis (Source: NHC-TAFB Invest Database) DIVERGENCE = GFS 850 hPa Horizontal Divergence (x10-7 s-1) VORTICITY = GFS 850 hPa Vorticity (x10-6 s-1) VERTICAL SHEAR = GFS 200-850 hPa Vertical Shear (kt) RH = GFS 600-850 hPa Relative Humidity (%) GOES = GOES Water Vapor Pixels Colder than -40C (%) DVORAK = Dvorak T-number, source: TAFB Version 3.0, July 2018