* NE PACIFIC TC GENESIS INDEX * * GFS VERSION * * EP952018 06/23/18 12 UTC * TIME (hr) 0 6 12 18 24 36 48 60 72 84 96 108 120 Prob of Genesis 32% 55% LAT (deg N) 12.8 13.1 13.7 14.5 15.5 17.8 19.4 20.6 21.0 21.1 20.8 20.6 20.5 LON (deg W) 115.8 115.9 115.9 115.9 115.9 116.3 117.6 120.0 122.9 125.9 128.3 130.3 131.9 DTL (km) 1285 1250 1195 1119 1025 865 809 914 1099 1329 1559 1749 1897 TRACK SOURCE TABM TABM TABM TABM TABM TABM TABM TABM TABM TABM TABM TABM TABM TCGI 0-48h Genesis Forecast: 32% is 0.7 times the sample mean ( 44%) TCGI 0-120h Genesis Forecast: 55% 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 1.9% -2.0 0.0 4.2% VORTICITY 1.6 1.3 8.1% 1.5 1.6 13.8% VERTICAL SHEAR 12.9 14.7 7.9% 14.9 11.6 23.9% RH 79.1 72.6 4.3% 74.8 62.5 3.4% GOES 42.9 43.1 5.4% 42.8 43.1 5.8% DVORAK 0.9 1.0 4.4% 0.9 1.0 4.1% --------------------------------------------------------------------------------------------- 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 = TAFB Dvorak T-number Version 2.1, February 2018