* NE PACIFIC TC GENESIS INDEX * * GFS VERSION * * EP942019 08/14/19 12 UTC * TIME (hr) 0 6 12 18 24 36 48 60 72 84 96 108 120 Prob of Genesis 15% 19% LAT (deg N) 15.4 15.4 15.7 16.0 16.4 17.3 17.8 19.5 19.3 18.4 17.3 16.2 15.6 LON (deg W) 127.9 128.6 129.0 129.5 130.1 131.4 132.7 132.8 135.1 137.9 141.2 144.4 147.1 DTL (km) 1917 1967 1973 1988 2005 2047 2126 2029 2067 1776 1458 1159 925 TRACK SOURCE AP13 AP13 AP13 AP13 AP13 AP13 AP13 TABM TABM TABM TABM TABM TABM TCGI 0-48h Genesis Forecast: 15% is 0.3 times the sample mean ( 44%) TCGI 0-120h Genesis Forecast: 19% 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 1.8 0.1% -2.0 1.2 0.9% VORTICITY 1.6 0.8 3.7% 1.5 0.3 2.6% VERTICAL SHEAR 12.9 9.0 6.4% 14.9 15.1 11.3% RH 79.1 71.3 2.5% 74.8 66.5 2.1% GOES 42.9 21.2 1.6% 42.8 21.2 1.4% 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