* NE PACIFIC TC GENESIS INDEX * * GFS VERSION * * EP982019 07/18/19 18 UTC * TIME (hr) 0 6 12 18 24 36 48 60 72 84 96 108 120 Prob of Genesis 34% 34% LAT (deg N) 10.9 11.3 11.3 11.2 12.1 14.8 17.2 18.6 19.2 18.9 18.2 17.5 18.2 LON (deg W) 127.5 128.8 130.9 134.0 134.5 135.5 136.1 136.6 137.2 137.9 139.6 141.4 142.3 DTL (km) 2229 2299 2472 2412 2321 2114 1988 1914 1845 1774 1604 1429 1323 TRACK SOURCE AP12 AP12 AP12 AP12 AP12 AP12 AP12 AP12 AP12 AP12 AP12 AP12 TABM TCGI 0-48h Genesis Forecast: 34% is 0.8 times the sample mean ( 44%) TCGI 0-120h Genesis Forecast: 34% 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 -5.1 6.8% -2.0 -0.7 4.1% VORTICITY 1.6 1.4 8.9% 1.5 1.0 7.3% VERTICAL SHEAR 12.9 13.3 8.9% 14.9 12.7 16.6% RH 79.1 76.7 5.4% 74.8 69.4 3.2% GOES 42.9 22.2 2.8% 42.8 22.2 2.1% DVORAK 0.9 0.5 1.3% 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