* NE PACIFIC TC GENESIS INDEX * * GFS VERSION * * EP092021 08/02/21 06 UTC * TIME (hr) 0 6 12 18 24 36 48 60 72 84 96 108 120 Prob of Genesis 16% 30% LAT (deg N) 11.2 11.7 12.2 12.5 12.5 13.1 14.3 15.3 16.5 18.7 21.0 20.7 19.1 LON (deg W) 130.1 130.7 131.0 131.2 131.4 131.2 130.0 130.2 130.1 130.0 130.6 134.3 138.5 DTL (km) 2412 2426 2407 2397 2411 2348 2161 2096 1997 1835 1750 2069 1709 TRACK SOURCE AP04 AP04 AP04 AP04 AP04 AP04 AP04 AP04 AP04 AP04 AP04 AP04 TABM TCGI 0-48h Genesis Forecast: 16% is 0.4 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 1.7 0.2% -2.0 2.5 0.0% VORTICITY 1.6 1.2 4.7% 1.5 1.3 7.7% VERTICAL SHEAR 12.9 14.3 5.0% 14.9 10.6 15.6% RH 79.1 73.7 2.8% 74.8 73.7 3.3% GOES 42.9 12.6 0.9% 42.8 12.6 1.0% DVORAK 0.9 1.0 2.7% 0.9 1.0 2.7% --------------------------------------------------------------------------------------------- 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