* NE PACIFIC TC GENESIS INDEX * * GFS VERSION * * EP912024 08/21/24 00 UTC * TIME (hr) 0 6 12 18 24 36 48 60 72 84 96 108 120 Prob of Genesis 72% 92% LAT (deg N) 14.3 14.2 14.3 14.4 14.9 15.6 16.0 16.4 16.8 17.0 17.4 17.6 18.0 LON (deg W) 133.8 135.1 136.0 136.9 137.8 139.8 141.9 143.9 146.1 148.4 150.6 152.8 154.7 DTL (km) 2306 2176 2080 1985 1875 1647 1419 1202 966 730 500 298 137 TRACK SOURCE AVNI AVNI AVNI AVNI AVNI AVNI AVNI AVNI AVNI AVNI AVNI AVNI AVNI TCGI 0-48h Genesis Forecast: 72% is 1.6 times the sample mean ( 44%) TCGI 0-120h Genesis Forecast: 92% is 1.6 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 -0.6 3.8% -2.0 -0.2 6.1% VORTICITY 1.6 3.4 27.3% 1.5 3.4 33.5% VERTICAL SHEAR 12.9 8.9 17.1% 14.9 7.2 33.7% RH 79.1 84.8 9.4% 74.8 80.3 7.5% GOES 42.9 10.9 1.9% 42.8 10.9 1.8% DVORAK 0.9 1.5 12.3% 0.9 1.5 9.2% --------------------------------------------------------------------------------------------- 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