* NE PACIFIC TC GENESIS INDEX * * GFS VERSION * * EP932019 08/10/19 18 UTC * TIME (hr) 0 6 12 18 24 36 48 60 72 84 96 108 120 Prob of Genesis 21% 52% LAT (deg N) 14.1 13.0 12.8 13.4 13.8 14.6 14.7 15.0 15.4 16.7 18.0 18.4 18.9 LON (deg W) 108.2 111.9 113.2 113.9 114.5 116.1 117.8 119.7 121.4 122.4 124.2 126.3 128.5 DTL (km) 676 1023 1143 1133 1117 1123 1226 1335 1411 1382 1439 1557 1695 TRACK SOURCE AP06 AP06 AP06 AP06 AP06 AP06 AP06 AP06 AP06 AP06 AP06 AP06 AP06 TCGI 0-48h Genesis Forecast: 21% is 0.5 times the sample mean ( 44%) TCGI 0-120h Genesis Forecast: 52% is 0.9 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 0.3 1.1% -2.0 0.0 4.3% VORTICITY 1.6 1.0 5.0% 1.5 1.6 13.6% VERTICAL SHEAR 12.9 12.8 6.4% 14.9 12.6 22.5% RH 79.1 77.9 4.0% 74.8 77.9 5.6% GOES 42.9 40.1 3.7% 42.8 40.1 5.2% DVORAK 0.9 0.5 0.9% 0.9 0.5 1.1% --------------------------------------------------------------------------------------------- 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