* NE PACIFIC TC GENESIS INDEX * * GFS VERSION * * EP942019 08/13/19 00 UTC * TIME (hr) 0 6 12 18 24 36 48 60 72 84 96 108 120 Prob of Genesis 39% 57% LAT (deg N) 12.9 13.4 13.9 14.4 14.8 15.7 16.7 17.2 16.7 15.9 15.1 14.7 14.4 LON (deg W) 125.4 125.7 126.3 126.9 127.7 129.2 130.8 132.2 134.5 137.3 140.2 143.3 146.6 DTL (km) 1909 1893 1903 1916 1953 1988 2040 2119 2169 1897 1623 1328 1043 TRACK SOURCE AVNI AVNI AVNI AVNI AVNI AVNI AVNI TABM TABM TABM TABM TABM TABM TCGI 0-48h Genesis Forecast: 39% is 0.9 times the sample mean ( 44%) TCGI 0-120h Genesis Forecast: 57% is 1.0 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 2.2% -2.0 0.1 4.2% VORTICITY 1.6 1.6 11.1% 1.5 1.4 13.1% VERTICAL SHEAR 12.9 10.2 11.4% 14.9 6.4 27.0% RH 79.1 79.2 6.7% 74.8 72.9 5.1% GOES 42.9 45.6 6.6% 42.8 45.6 6.3% DVORAK 0.9 0.5 1.5% 0.9 0.5 1.2% --------------------------------------------------------------------------------------------- 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