* NE PACIFIC TC GENESIS INDEX * * GFS VERSION * * EP072020 07/21/20 18 UTC * TIME (hr) 0 6 12 18 24 36 48 60 72 84 96 108 120 Prob of Genesis 10% 11% LAT (deg N) 21.0 21.3 21.7 22.1 22.5 23.5 24.5 25.7 26.8 27.9 28.7 29.5 30.2 LON (deg W) 133.1 134.6 136.1 137.6 139.1 141.7 143.8 145.2 145.9 146.1 146.0 145.8 145.2 DTL (km) 1963 2042 1957 1808 1664 1425 1266 1198 1209 1277 1342 1412 1504 TRACK SOURCE TABM TABM TABM TABM TABM TABM TABM TABM TABM TABM TABM TABM TABM TCGI 0-48h Genesis Forecast: 10% is 0.2 times the sample mean ( 44%) TCGI 0-120h Genesis Forecast: 11% is 0.2 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 1.4% -2.0 -0.5 2.8% VORTICITY 1.6 -0.4 0.8% 1.5 -0.6 0.0% VERTICAL SHEAR 12.9 15.6 4.6% 14.9 34.0 6.5% RH 79.1 46.1 0.0% 74.8 38.3 0.0% GOES 42.9 0.0 0.0% 42.8 0.0 0.0% DVORAK 0.9 1.0 2.7% 0.9 1.0 2.1% --------------------------------------------------------------------------------------------- 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