* NE PACIFIC TC GENESIS INDEX * * GFS VERSION * * EP022019 06/30/19 18 UTC * TIME (hr) 0 6 12 18 24 36 48 60 72 84 96 108 120 Prob of Genesis 100% 100% LAT (deg N) 11.0 11.8 12.1 12.3 12.7 12.4 12.9 13.1 13.6 14.6 15.7 17.0 18.4 LON (deg W) 111.0 112.6 114.1 115.6 117.4 120.9 123.1 125.1 126.9 128.4 130.0 132.0 133.7 DTL (km) 1130 1172 1268 1318 1377 1641 1743 1870 1973 2019 2050 2119 2178 TRACK SOURCE AP20 AP20 AP20 AP20 AP20 AP20 AP20 AP20 AP20 AP20 AP20 AP20 AP20 TCGI 0-48h Genesis Forecast: 100% is 2.3 times the sample mean ( 44%) TCGI 0-120h Genesis Forecast: 100% is 1.8 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 -8.6 14.6% -2.0 -5.6 16.2% VORTICITY 1.6 3.4 25.7% 1.5 4.2 31.5% VERTICAL SHEAR 12.9 9.5 15.6% 14.9 11.9 23.6% RH 79.1 77.4 8.2% 74.8 75.9 5.5% GOES 42.9 76.4 14.8% 42.8 76.4 10.3% DVORAK 0.9 2.5 21.1% 0.9 2.5 13.0% --------------------------------------------------------------------------------------------- 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