* NE PACIFIC TC GENESIS INDEX * * GFS VERSION * * EP942019 08/16/19 06 UTC * TIME (hr) 0 6 12 18 24 36 48 60 72 84 96 108 120 Prob of Genesis 10% 14% LAT (deg N) 18.6 19.0 19.5 20.0 20.5 21.5 22.2 22.6 23.2 24.1 25.5 27.3 29.1 LON (deg W) 133.2 134.2 135.0 135.8 136.4 137.4 138.0 138.4 138.9 139.6 140.6 141.5 141.8 DTL (km) 2117 2161 2069 1992 1925 1819 1767 1732 1693 1652 1601 1608 1690 TRACK SOURCE TABM TABM TABM TABM TABM TABM TABM TABM TABM TABM TABM TABM TABM TCGI 0-48h Genesis Forecast: 10% is 0.2 times the sample mean ( 44%) TCGI 0-120h Genesis Forecast: 14% 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 0.1% -2.0 1.1 1.0% VORTICITY 1.6 0.5 3.0% 1.5 0.1 1.9% VERTICAL SHEAR 12.9 18.0 4.0% 14.9 23.2 9.3% RH 79.1 65.5 1.6% 74.8 54.6 1.1% GOES 42.9 5.4 0.3% 42.8 5.4 0.3% 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