* NE PACIFIC TC GENESIS INDEX * * GFS VERSION * * EP952023 09/18/23 12 UTC * TIME (hr) 0 6 12 18 24 36 48 60 72 84 96 108 120 Prob of Genesis 47% 64% LAT (deg N) 14.2 14.9 15.3 15.7 16.0 16.4 16.3 15.4 13.9 12.5 12.3 13.3 14.9 LON (deg W) 113.4 114.1 114.9 116.2 117.8 121.4 125.0 127.7 129.4 129.4 128.3 127.2 126.7 DTL (km) 1030 987 988 1035 1121 1327 1622 1900 2149 2259 2177 2021 1861 TRACK SOURCE AVNI AVNI TABM TABM TABM TABM TABM TABM TABM TABM TABM TABM TABM TCGI 0-48h Genesis Forecast: 47% is 1.1 times the sample mean ( 44%) TCGI 0-120h Genesis Forecast: 64% is 1.1 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 -0.9 3.4% -2.0 -0.9 6.9% VORTICITY 1.6 2.1 14.7% 1.5 1.7 16.3% VERTICAL SHEAR 12.9 11.8 11.9% 14.9 11.8 26.3% RH 79.1 79.3 7.5% 74.8 78.3 6.5% GOES 42.9 24.7 3.9% 42.8 24.7 3.6% DVORAK 0.9 1.0 5.7% 0.9 1.0 4.6% --------------------------------------------------------------------------------------------- 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 2.1, February 2018