* NE PACIFIC TC GENESIS INDEX * * GFS VERSION * * EP902019 07/28/19 12 UTC * TIME (hr) 0 6 12 18 24 36 48 60 72 84 96 108 120 Prob of Genesis 89% 97% LAT (deg N) 11.3 11.7 12.0 12.1 12.1 12.1 12.7 13.0 12.7 13.1 13.4 13.4 13.3 LON (deg W) 107.9 110.1 111.8 113.5 115.0 117.2 119.9 122.9 125.4 128.2 131.0 134.2 137.2 DTL (km) 919 1011 1096 1219 1311 1422 1543 1720 1925 2117 2308 2297 1998 TRACK SOURCE AP19 AP19 AP19 AP19 AP19 AP19 AP19 AP19 AP19 AP19 AP19 AP19 AP19 TCGI 0-48h Genesis Forecast: 89% is 2.0 times the sample mean ( 44%) TCGI 0-120h Genesis Forecast: 97% is 1.7 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 -1.6 5.6% -2.0 -1.9 10.2% VORTICITY 1.6 3.1 26.5% 1.5 3.2 30.8% VERTICAL SHEAR 12.9 7.7 19.0% 14.9 9.5 30.4% RH 79.1 82.4 11.2% 74.8 80.3 7.1% GOES 42.9 61.6 13.4% 42.8 61.6 10.2% DVORAK 0.9 1.5 13.0% 0.9 1.5 8.7% --------------------------------------------------------------------------------------------- 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