* NE PACIFIC TC GENESIS INDEX * * GFS VERSION * * EP962019 08/18/19 00 UTC * TIME (hr) 0 6 12 18 24 36 48 60 72 84 96 108 120 Prob of Genesis 21% 31% LAT (deg N) 14.2 14.1 13.5 12.9 12.8 12.9 13.2 13.2 13.2 13.1 12.7 12.1 11.4 LON (deg W) 126.7 127.2 127.6 128.0 128.5 130.1 132.2 134.6 137.1 140.1 143.1 145.9 148.8 DTL (km) 1913 1962 2038 2115 2163 2283 2415 2264 2012 1721 1459 1257 1105 TRACK SOURCE AVNI AVNI AVNI AVNI AVNI AVNI AVNI AVNI AVNI AVNI AVNI AVNI AVNI TCGI 0-48h Genesis Forecast: 21% is 0.5 times the sample mean ( 44%) TCGI 0-120h Genesis Forecast: 31% is 0.6 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 2.2 0.0% -2.0 1.9 0.1% VORTICITY 1.6 1.2 5.6% 1.5 1.1 6.9% VERTICAL SHEAR 12.9 16.0 5.3% 14.9 13.2 15.0% RH 79.1 78.9 4.1% 74.8 76.8 3.7% GOES 42.9 28.5 2.5% 42.8 28.5 2.5% DVORAK 0.9 1.0 3.2% 0.9 1.0 2.7% --------------------------------------------------------------------------------------------- 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 2.1, February 2018