* NE PACIFIC TC GENESIS INDEX * * GFS VERSION * * EP982019 07/18/19 06 UTC * TIME (hr) 0 6 12 18 24 36 48 60 72 84 96 108 120 Prob of Genesis 33% 33% LAT (deg N) 10.5 10.9 11.1 11.5 12.3 13.7 13.8 16.6 19.0 20.4 20.4 20.1 20.4 LON (deg W) 124.7 125.8 126.9 128.1 129.3 132.1 134.8 135.3 136.0 137.4 139.0 142.1 144.5 DTL (km) 2061 2103 2167 2228 2266 2369 2221 2085 1973 1820 1653 1329 1080 TRACK SOURCE AP19 AP19 AP19 AP19 AP19 AP19 AP19 AP19 AP19 AP19 AP19 AP19 AP19 TCGI 0-48h Genesis Forecast: 33% is 0.8 times the sample mean ( 44%) TCGI 0-120h Genesis Forecast: 33% is 0.6 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 -2.3 4.0% -2.0 0.1 3.0% VORTICITY 1.6 1.6 9.8% 1.5 1.3 9.0% VERTICAL SHEAR 12.9 12.6 9.1% 14.9 18.5 14.8% RH 79.1 79.6 6.0% 74.8 68.8 3.2% GOES 42.9 23.1 2.8% 42.8 23.1 2.2% DVORAK 0.9 0.5 1.3% 0.9 0.5 0.9% --------------------------------------------------------------------------------------------- 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