* NE PACIFIC TC GENESIS INDEX * * GFS VERSION * * EP952019 10/04/19 18 UTC * TIME (hr) 0 6 12 18 24 36 48 60 72 84 96 108 120 Prob of Genesis 40% 60% LAT (deg N) 13.4 13.6 14.0 14.2 14.6 15.3 15.5 15.4 15.5 14.8 14.6 13.7 12.4 LON (deg W) 126.0 126.2 126.7 127.2 127.9 128.7 130.0 131.0 133.7 138.8 141.4 143.9 146.6 DTL (km) 1916 1917 1928 1955 1984 1983 2065 2152 2279 1777 1524 1327 1178 TRACK SOURCE AP18 AP18 AP18 AP18 AP18 AP18 AP18 AP18 AP18 AP18 AP18 AP18 AP18 TCGI 0-48h Genesis Forecast: 40% is 0.9 times the sample mean ( 44%) TCGI 0-120h Genesis Forecast: 60% is 1.1 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 -0.6 2.7% -2.0 -0.2 5.0% VORTICITY 1.6 1.2 9.0% 1.5 1.4 13.8% VERTICAL SHEAR 12.9 9.4 11.9% 14.9 8.6 26.8% RH 79.1 79.2 6.7% 74.8 75.8 5.8% GOES 42.9 30.1 4.3% 42.8 30.1 4.2% DVORAK 0.9 1.0 5.1% 0.9 1.0 4.4% --------------------------------------------------------------------------------------------- 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