* NE PACIFIC TC GENESIS INDEX * * GFS VERSION * * EP972018 08/14/18 12 UTC * TIME (hr) 0 6 12 18 24 36 48 60 72 84 96 108 120 Prob of Genesis 57% 70% LAT (deg N) 11.5 11.5 11.4 11.2 11.0 10.6 10.1 9.9 9.8 9.6 9.6 9.8 9.8 LON (deg W) 119.2 120.2 121.4 122.7 123.8 125.9 128.1 130.0 131.7 133.6 135.8 137.9 139.8 DTL (km) 1599 1666 1760 1868 1957 2135 2339 2503 2648 2531 2320 2112 1939 TRACK SOURCE AVNI AVNI AVNI AVNI AVNI AVNI AVNI AVNI AVNI AVNI AVNI AVNI TABM TCGI 0-48h Genesis Forecast: 57% is 1.3 times the sample mean ( 44%) TCGI 0-120h Genesis Forecast: 70% is 1.3 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 -1.8 5.0% -2.0 -0.8 7.1% VORTICITY 1.6 2.0 15.8% 1.5 1.8 18.0% VERTICAL SHEAR 12.9 8.3 15.6% 14.9 9.0 29.5% RH 79.1 82.0 9.3% 74.8 81.6 6.3% GOES 42.9 28.6 5.1% 42.8 28.6 4.4% DVORAK 0.9 1.0 6.4% 0.9 1.0 4.9% --------------------------------------------------------------------------------------------- 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