* NE PACIFIC TC GENESIS INDEX * * GFS VERSION * * EP912019 08/03/19 00 UTC * TIME (hr) 0 6 12 18 24 36 48 60 72 84 96 108 120 Prob of Genesis 15% 20% LAT (deg N) 13.1 13.7 14.1 14.6 14.9 15.4 15.8 15.7 14.9 13.9 13.4 13.5 13.2 LON (deg W) 119.2 120.2 121.1 122.0 122.9 124.5 126.2 128.1 130.3 132.5 134.4 136.4 138.7 DTL (km) 1459 1484 1504 1521 1561 1646 1760 1906 2135 2384 2280 2070 1852 TRACK SOURCE AVNI AVNI AVNI AVNI AVNI AVNI AVNI AVNI AVNI AVNI TABM TABM TABM TCGI 0-48h Genesis Forecast: 15% is 0.3 times the sample mean ( 44%) TCGI 0-120h Genesis Forecast: 20% is 0.4 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 1.4 0.3% -2.0 1.2 0.9% VORTICITY 1.6 0.8 3.8% 1.5 0.4 3.2% VERTICAL SHEAR 12.9 23.8 2.4% 14.9 24.1 9.1% RH 79.1 74.7 2.9% 74.8 70.5 2.4% GOES 42.9 31.2 2.4% 42.8 31.2 2.1% 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 2.1, February 2018