* NE PACIFIC TC GENESIS INDEX * * GFS VERSION * * EP942019 08/14/19 00 UTC * TIME (hr) 0 6 12 18 24 36 48 60 72 84 96 108 120 Prob of Genesis 31% 43% LAT (deg N) 13.8 13.8 14.6 17.1 17.4 16.9 16.7 17.2 17.8 18.1 18.5 18.8 19.6 LON (deg W) 127.8 128.2 128.3 127.6 128.6 131.6 134.4 136.8 139.9 143.0 145.4 147.3 148.4 DTL (km) 2033 2067 2012 1757 1811 2092 2177 1915 1580 1250 993 791 670 TRACK SOURCE AP19 AP19 AP19 AP19 AP19 AP19 AP19 AP19 AP19 AP19 AP19 AP19 AP19 TCGI 0-48h Genesis Forecast: 31% is 0.7 times the sample mean ( 44%) TCGI 0-120h Genesis Forecast: 43% is 0.8 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 -0.2 2.0% -2.0 0.9 2.0% VORTICITY 1.6 2.1 11.3% 1.5 1.9 13.6% VERTICAL SHEAR 12.9 11.9 8.9% 14.9 12.2 19.8% RH 79.1 69.7 3.5% 74.8 65.1 3.2% GOES 42.9 31.9 3.8% 42.8 31.9 3.6% DVORAK 0.9 0.5 1.2% 0.9 0.5 1.0% --------------------------------------------------------------------------------------------- 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