* NE PACIFIC TC GENESIS INDEX * * GFS VERSION * * EP942019 08/13/19 12 UTC * TIME (hr) 0 6 12 18 24 36 48 60 72 84 96 108 120 Prob of Genesis 32% 32% LAT (deg N) 14.0 14.5 14.9 15.3 15.8 16.9 18.0 19.1 19.8 19.5 19.0 18.5 18.0 LON (deg W) 125.6 126.1 126.6 127.2 127.8 128.8 129.9 131.1 132.1 134.0 136.5 139.6 142.9 DTL (km) 1839 1842 1855 1875 1876 1865 1874 1904 1958 2142 1918 1605 1268 TRACK SOURCE AVNI AVNI AVNI AVNI AVNI AVNI AVNI AVNI TABM TABM TABM TABM TABM TCGI 0-48h Genesis Forecast: 32% is 0.7 times the sample mean ( 44%) TCGI 0-120h Genesis Forecast: 32% 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 0.1 1.7% -2.0 1.0 1.4% VORTICITY 1.6 1.5 9.1% 1.5 0.8 5.9% VERTICAL SHEAR 12.9 11.2 9.5% 14.9 10.7 16.7% RH 79.1 74.5 4.7% 74.8 69.4 3.1% GOES 42.9 47.6 6.0% 42.8 47.6 4.4% 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 2.1, February 2018