* NE PACIFIC TC GENESIS INDEX * * GFS VERSION * * EP942019 08/14/19 00 UTC * TIME (hr) 0 6 12 18 24 36 48 60 72 84 96 108 120 Prob of Genesis 31% 41% LAT (deg N) 15.9 16.3 17.0 17.5 17.7 18.2 18.6 19.2 19.8 20.3 20.8 21.1 21.8 LON (deg W) 126.0 126.8 127.9 129.0 130.2 131.9 134.3 136.7 139.0 141.5 144.2 145.9 147.2 DTL (km) 1736 1763 1787 1836 1919 2031 2155 1897 1653 1392 1115 944 830 TRACK SOURCE AP05 AP05 AP05 AP05 AP05 AP05 AP05 AP05 AP05 AP05 AP05 AP05 AP05 TCGI 0-48h Genesis Forecast: 31% is 0.7 times the sample mean ( 44%) TCGI 0-120h Genesis Forecast: 41% is 0.7 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 1.2 0.7% -2.0 1.1 1.6% VORTICITY 1.6 2.0 11.0% 1.5 1.7 12.1% VERTICAL SHEAR 12.9 7.5 11.0% 14.9 9.4 20.3% RH 79.1 69.6 3.6% 74.8 63.4 2.8% GOES 42.9 31.9 3.9% 42.8 31.9 3.5% DVORAK 0.9 0.5 1.2% 0.9 0.5 1.0% --------------------------------------------------------------------------------------------- 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