* NE PACIFIC TC GENESIS INDEX * * GFS VERSION * * EP962021 07/13/21 06 UTC * TIME (hr) 0 6 12 18 24 36 48 60 72 84 96 108 120 Prob of Genesis 17% 19% LAT (deg N) 11.4 11.9 12.5 13.2 13.9 15.2 16.6 18.2 19.5 20.5 20.7 20.6 20.0 LON (deg W) 106.0 107.2 108.4 109.7 110.9 113.5 115.6 117.5 118.7 119.2 119.1 119.3 119.7 DTL (km) 808 821 839 845 879 930 909 908 883 852 836 862 927 TRACK SOURCE TABM TABM TABM TABM TABM TABM TABM TABM TABM TABM TABM TABM TABM TCGI 0-48h Genesis Forecast: 17% is 0.4 times the sample mean ( 44%) TCGI 0-120h Genesis Forecast: 19% is 0.3 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 0.8 0.7% -2.0 0.8 1.3% VORTICITY 1.6 0.8 3.9% 1.5 -0.1 1.3% VERTICAL SHEAR 12.9 8.3 6.6% 14.9 11.8 12.2% RH 79.1 74.5 2.9% 74.8 60.1 1.5% GOES 42.9 27.4 2.1% 42.8 27.4 1.9% DVORAK 0.9 0.5 0.8% 0.9 0.5 0.6% --------------------------------------------------------------------------------------------- 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