* NE PACIFIC TC GENESIS INDEX * * GFS VERSION * * EP982021 07/24/21 06 UTC * TIME (hr) 0 6 12 18 24 36 48 60 72 84 96 108 120 Prob of Genesis 36% 36% LAT (deg N) 12.5 12.7 12.9 13.0 13.1 13.4 13.7 14.1 14.4 14.6 15.0 15.3 15.6 LON (deg W) 127.9 129.3 130.7 132.1 133.4 135.7 137.9 139.9 142.1 144.3 146.9 149.6 152.6 DTL (km) 2136 2237 2327 2424 2390 2145 1911 1694 1464 1241 976 722 485 TRACK SOURCE AVNI AVNI AVNI AVNI AVNI AVNI AVNI AVNI AVNI AVNI AVNI AVNI AVNI TCGI 0-48h Genesis Forecast: 36% is 0.8 times the sample mean ( 44%) TCGI 0-120h Genesis Forecast: 36% is 0.6 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 1.1 0.9% -2.0 1.1 1.4% VORTICITY 1.6 1.8 10.9% 1.5 1.2 8.4% VERTICAL SHEAR 12.9 9.4 11.1% 14.9 11.3 17.7% RH 79.1 82.5 7.0% 74.8 78.6 4.4% GOES 42.9 10.1 1.2% 42.8 10.1 0.9% DVORAK 0.9 1.0 4.8% 0.9 1.0 3.0% --------------------------------------------------------------------------------------------- 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