* 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) 10.9 11.6 12.0 12.0 12.0 12.3 13.2 13.7 14.3 15.1 16.0 16.6 17.6 LON (deg W) 111.1 112.8 114.9 116.6 118.1 120.3 122.4 124.6 126.1 127.9 129.8 131.3 133.1 DTL (km) 1146 1203 1317 1398 1484 1605 1669 1785 1857 1942 2011 2088 2174 TRACK SOURCE AP19 AP19 AP19 AP19 AP19 AP19 AP19 AP19 AP19 AP19 AP19 AP19 AP19 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 -11.4 17.6% -2.0 -5.7 16.1% VORTICITY 1.6 3.7 25.7% 1.5 4.4 31.6% VERTICAL SHEAR 12.9 8.9 15.1% 14.9 9.0 24.4% RH 79.1 78.0 7.9% 74.8 75.6 5.3% GOES 42.9 76.4 13.9% 42.8 76.4 10.0% DVORAK 0.9 2.5 19.9% 0.9 2.5 12.6% --------------------------------------------------------------------------------------------- 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