* NE PACIFIC TC GENESIS INDEX * * GFS VERSION * * EP942019 08/15/19 06 UTC * TIME (hr) 0 6 12 18 24 36 48 60 72 84 96 108 120 Prob of Genesis 14% 20% LAT (deg N) 16.4 16.6 16.7 16.8 17.1 19.1 18.5 17.7 16.9 16.7 16.5 16.3 15.9 LON (deg W) 130.8 131.6 132.6 133.7 134.9 135.6 138.4 141.7 145.3 148.6 151.5 153.9 155.9 DTL (km) 2061 2113 2190 2248 2116 2018 1727 1395 1040 723 479 338 333 TRACK SOURCE AP18 AP18 AP18 AP18 AP18 TABM TABM TABM TABM TABM TABM TABM TABM TCGI 0-48h Genesis Forecast: 14% is 0.3 times the sample mean ( 44%) TCGI 0-120h Genesis Forecast: 20% is 0.3 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 1.9 0.1% -2.0 1.1 0.9% VORTICITY 1.6 0.9 3.9% 1.5 0.6 3.8% VERTICAL SHEAR 12.9 8.6 6.5% 14.9 12.0 12.1% RH 79.1 74.7 2.9% 74.8 63.8 1.8% GOES 42.9 5.2 0.3% 42.8 5.2 0.3% DVORAK 0.9 0.5 0.8% 0.9 0.5 0.6% --------------------------------------------------------------------------------------------- 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