* NE PACIFIC TC GENESIS INDEX * * GFS VERSION * * EP982019 07/18/19 12 UTC * TIME (hr) 0 6 12 18 24 36 48 60 72 84 96 108 120 Prob of Genesis 30% 30% LAT (deg N) 10.2 10.2 10.5 10.6 10.8 12.4 15.3 17.9 19.6 20.1 19.7 20.5 19.4 LON (deg W) 127.5 128.2 129.7 131.9 133.5 135.9 136.0 135.7 136.0 136.3 138.0 138.2 141.3 DTL (km) 2286 2339 2433 2606 2480 2167 2047 2018 1968 1935 1758 1739 1410 TRACK SOURCE AP12 AP12 AP12 AP12 AP12 AP12 AP12 AP12 AP12 AP12 AP12 TABM TABM TCGI 0-48h Genesis Forecast: 30% is 0.7 times the sample mean ( 44%) TCGI 0-120h Genesis Forecast: 30% is 0.5 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 -4.3 5.5% -2.0 -0.4 3.7% VORTICITY 1.6 1.2 7.4% 1.5 0.5 4.9% VERTICAL SHEAR 12.9 12.2 8.6% 14.9 15.9 15.5% RH 79.1 77.7 5.2% 74.8 72.4 3.5% GOES 42.9 19.3 2.2% 42.8 19.3 1.8% DVORAK 0.9 0.5 1.2% 0.9 0.5 0.8% --------------------------------------------------------------------------------------------- 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