* NE PACIFIC TC GENESIS INDEX * * GFS VERSION * * EP982019 07/19/19 00 UTC * TIME (hr) 0 6 12 18 24 36 48 60 72 84 96 108 120 Prob of Genesis 13% 20% LAT (deg N) 13.4 13.5 13.9 14.5 15.4 17.4 19.0 19.4 19.2 18.5 18.0 17.4 16.9 LON (deg W) 127.8 129.0 129.9 130.8 131.6 132.3 131.8 131.1 130.8 131.2 132.4 133.9 136.0 DTL (km) 2065 2150 2188 2206 2199 2118 1975 1884 1868 1948 2083 2211 2004 TRACK SOURCE TABM TABM TABM TABM TABM TABM TABM TABM TABM TABM TABM TABM TABM TCGI 0-48h Genesis Forecast: 13% is 0.3 times the sample mean ( 44%) TCGI 0-120h Genesis Forecast: 20% is 0.3 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 -1.9 2.2% -2.0 0.0 2.2% VORTICITY 1.6 0.1 1.9% 1.5 -0.1 1.5% VERTICAL SHEAR 12.9 18.6 3.8% 14.9 14.7 11.4% RH 79.1 72.3 2.6% 74.8 65.1 1.9% GOES 42.9 27.9 2.1% 42.8 27.9 1.9% DVORAK 0.9 0.5 0.8% 0.9 0.5 0.6% --------------------------------------------------------------------------------------------- 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