* NE PACIFIC TC GENESIS INDEX * * GFS VERSION * * EP092021 08/03/21 12 UTC * TIME (hr) 0 6 12 18 24 36 48 60 72 84 96 108 120 Prob of Genesis 47% 61% LAT (deg N) 13.5 13.8 14.3 14.6 14.9 15.7 16.3 18.0 20.0 19.7 19.8 19.6 18.8 LON (deg W) 132.8 132.8 132.9 133.0 133.1 132.8 132.4 131.9 135.9 137.4 139.7 141.4 143.4 DTL (km) 2436 2416 2386 2372 2358 2276 2201 2044 1977 1821 1580 1403 1199 TRACK SOURCE AP25 AP25 AP25 AP25 AP25 AP25 AP25 AP25 AP25 AP25 AP25 AP25 AP25 TCGI 0-48h Genesis Forecast: 47% is 1.1 times the sample mean ( 44%) TCGI 0-120h Genesis Forecast: 61% 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 2.0 0.0% -2.0 2.2 0.0% VORTICITY 1.6 1.7 13.0% 1.5 1.9 17.5% VERTICAL SHEAR 12.9 13.5 11.0% 14.9 11.8 25.5% RH 79.1 79.5 7.6% 74.8 74.2 5.6% GOES 42.9 13.5 2.0% 42.8 13.5 1.9% DVORAK 0.9 2.0 13.9% 0.9 2.0 10.8% --------------------------------------------------------------------------------------------- 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