* NE PACIFIC TC GENESIS INDEX * * GFS VERSION * * EP982019 07/19/19 06 UTC * TIME (hr) 0 6 12 18 24 36 48 60 72 84 96 108 120 Prob of Genesis 30% 30% LAT (deg N) 11.4 11.5 12.1 13.8 14.9 16.5 17.7 18.2 18.1 17.6 16.4 16.4 15.8 LON (deg W) 130.3 132.3 134.2 137.0 137.2 136.7 136.1 135.9 136.9 139.0 141.5 142.2 144.9 DTL (km) 2414 2560 2351 1998 1936 1941 1979 1992 1889 1677 1447 1373 1130 TRACK SOURCE AP09 AP09 AP09 AP09 AP09 AP09 AP09 AP09 AP09 AP09 AP09 TABM TABM TCGI 0-48h Genesis Forecast: 30% is 0.7 times the sample mean ( 44%) TCGI 0-120h Genesis Forecast: 30% is 0.5 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 -4.0 5.2% -2.0 -0.5 3.5% VORTICITY 1.6 1.1 6.9% 1.5 0.8 5.6% VERTICAL SHEAR 12.9 14.4 7.6% 14.9 15.4 14.1% RH 79.1 74.2 4.4% 74.8 65.9 2.5% GOES 42.9 37.3 4.4% 42.8 37.3 3.2% DVORAK 0.9 0.5 1.2% 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 3.0, July 2018