* NE PACIFIC TC GENESIS INDEX * * GFS VERSION * * CP912019 09/19/19 00 UTC * TIME (hr) 0 6 12 18 24 36 48 60 72 84 96 108 120 Prob of Genesis 16% 20% LAT (deg N) 21.6 23.4 25.4 27.1 28.2 28.7 28.7 29.0 29.7 30.1 29.9 29.2 28.0 LON (deg W) 165.4 165.1 164.6 164.1 163.9 164.6 166.7 169.2 170.9 171.4 171.5 171.2 170.8 DTL (km) 578 566 621 714 792 877 1014 1219 1402 1465 1460 1398 1290 TRACK SOURCE TABM TABM TABM TABM TABM TABM TABM TABM TABM TABM TABM TABM TABM TCGI 0-48h Genesis Forecast: 16% is 0.4 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 -0.1 1.2% -2.0 -0.2 2.5% VORTICITY 1.6 0.1 2.0% 1.5 -0.3 0.5% VERTICAL SHEAR 12.9 35.5 0.0% 14.9 33.2 6.7% RH 79.1 70.0 2.3% 74.8 60.3 1.5% GOES 42.9 78.9 6.2% 42.8 78.9 5.5% DVORAK 0.9 1.5 4.6% 0.9 1.5 3.6% --------------------------------------------------------------------------------------------- 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: PHFO Version 2.1, February 2018