* NE PACIFIC TC GENESIS INDEX * * GFS VERSION * * EP132019 09/25/19 06 UTC * TIME (hr) 0 6 12 18 24 36 48 60 72 84 96 108 120 Prob of Genesis 10% 18% LAT (deg N) 19.6 19.7 19.7 19.6 19.0 21.1 22.4 23.5 24.5 25.4 25.8 25.6 25.2 LON (deg W) 140.6 141.0 141.3 141.7 142.2 141.1 141.4 141.9 142.7 143.8 145.1 146.7 148.4 DTL (km) 1486 1444 1413 1371 1322 1433 1426 1410 1366 1309 1216 1064 904 TRACK SOURCE AP04 AP04 AP04 AP04 AP04 TABM TABM TABM TABM TABM TABM TABM TABM TCGI 0-48h Genesis Forecast: 10% is 0.2 times the sample mean ( 44%) TCGI 0-120h Genesis Forecast: 18% 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 2.4 0.0% -2.0 1.8 0.2% VORTICITY 1.6 0.4 2.7% 1.5 0.5 3.4% VERTICAL SHEAR 12.9 28.8 1.0% 14.9 23.1 9.3% RH 79.1 49.5 0.0% 74.8 45.7 0.4% GOES 42.9 18.2 1.3% 42.8 18.2 1.2% 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: TAFB Version 3.0, July 2018