* NE PACIFIC TC GENESIS INDEX * * GFS VERSION * * EP942019 06/29/19 18 UTC * TIME (hr) 0 6 12 18 24 36 48 60 72 84 96 108 120 Prob of Genesis 99% 100% LAT (deg N) 8.9 9.4 10.4 11.5 11.8 11.4 11.6 12.6 13.3 13.9 14.6 15.2 15.6 LON (deg W) 108.5 110.2 110.2 111.3 113.2 116.3 118.8 120.0 122.4 123.9 125.4 127.0 128.3 DTL (km) 1182 1233 1141 1105 1218 1442 1564 1558 1660 1716 1778 1869 1929 TRACK SOURCE AP13 AP13 AP13 AP13 AP13 AP13 AP13 AP13 AP13 AP13 AP13 AP13 AP13 TCGI 0-48h Genesis Forecast: 99% 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 17.9% -2.0 -6.4 18.9% VORTICITY 1.6 3.8 33.1% 1.5 4.7 36.1% VERTICAL SHEAR 12.9 10.2 17.6% 14.9 7.9 26.7% RH 79.1 78.7 10.1% 74.8 77.9 6.0% GOES 42.9 78.3 17.7% 42.8 78.3 11.0% DVORAK 0.9 0.5 2.2% 0.9 0.5 1.2% --------------------------------------------------------------------------------------------- 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