* NE PACIFIC TC GENESIS INDEX * * GFS VERSION * * EP952019 07/04/19 12 UTC * TIME (hr) 0 6 12 18 24 36 48 60 72 84 96 108 120 Prob of Genesis 47% 47% LAT (deg N) 8.4 8.8 9.9 10.7 11.2 12.0 11.8 12.1 12.6 13.2 14.1 14.6 14.6 LON (deg W) 105.2 106.6 106.3 106.5 107.3 107.8 110.3 112.9 115.5 118.4 121.8 125.6 128.9 DTL (km) 1088 1101 976 903 896 853 1011 1176 1285 1389 1549 1798 2054 TRACK SOURCE AP06 AP06 AP06 AP06 AP06 TABM TABM TABM TABM TABM TABM TABM TABM TCGI 0-48h Genesis Forecast: 47% is 1.1 times the sample mean ( 44%) TCGI 0-120h Genesis Forecast: 47% is 0.8 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 -2.4 5.2% -2.0 -1.0 6.2% VORTICITY 1.6 1.0 8.9% 1.5 0.2 4.5% VERTICAL SHEAR 12.9 14.4 10.3% 14.9 19.1 19.5% RH 79.1 82.2 8.3% 74.8 77.1 5.5% GOES 42.9 75.0 12.2% 42.8 75.0 9.8% DVORAK 0.9 0.5 1.6% 0.9 0.5 1.1% --------------------------------------------------------------------------------------------- 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