* 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 11.5 12.1 12.7 12.8 12.8 13.5 13.6 14.3 14.9 15.4 16.1 16.6 LON (deg W) 111.1 112.5 113.8 115.3 116.7 118.8 120.9 122.3 123.6 125.0 126.5 127.9 130.1 DTL (km) 1146 1189 1243 1264 1327 1458 1546 1627 1661 1723 1812 1859 1990 TRACK SOURCE AP08 AP08 AP08 AP08 AP08 AP08 AP08 AP08 AP08 AP08 AP08 AP08 AP08 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 -9.1 15.3% -2.0 -5.0 14.9% VORTICITY 1.6 3.5 26.1% 1.5 4.2 31.3% VERTICAL SHEAR 12.9 10.2 15.0% 14.9 8.2 25.2% RH 79.1 77.3 8.1% 74.8 76.3 5.5% GOES 42.9 76.4 14.7% 42.8 76.4 10.2% DVORAK 0.9 2.5 20.9% 0.9 2.5 12.9% --------------------------------------------------------------------------------------------- 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