* NE PACIFIC TC GENESIS INDEX * * GFS VERSION * * EP952019 07/05/19 12 UTC * TIME (hr) 0 6 12 18 24 36 48 60 72 84 96 108 120 Prob of Genesis 75% 90% LAT (deg N) 11.6 12.5 13.4 14.0 14.5 15.1 15.9 17.2 18.5 19.7 19.7 19.7 19.9 LON (deg W) 109.7 110.5 112.2 114.0 115.6 117.3 118.8 119.5 119.8 120.7 121.7 122.7 124.0 DTL (km) 998 963 1017 1075 1103 1157 1198 1127 1044 1033 1120 1193 1267 TRACK SOURCE AP09 AP09 AP09 AP09 AP09 AP09 AP09 AP09 AP09 AP09 AP09 AP09 AP09 TCGI 0-48h Genesis Forecast: 75% is 1.7 times the sample mean ( 44%) TCGI 0-120h Genesis Forecast: 90% is 1.6 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 -3.6 8.3% -2.0 -1.6 10.1% VORTICITY 1.6 2.5 21.5% 1.5 2.4 25.5% VERTICAL SHEAR 12.9 14.5 13.1% 14.9 14.4 29.4% RH 79.1 77.8 8.9% 74.8 73.1 6.6% GOES 42.9 76.7 15.9% 42.8 76.7 13.6% DVORAK 0.9 1.0 7.2% 0.9 1.0 5.4% --------------------------------------------------------------------------------------------- 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