* NE PACIFIC TC GENESIS INDEX * * GFS VERSION * * EP012021 05/11/21 18 UTC * TIME (hr) 0 6 12 18 24 36 48 60 72 84 96 108 120 Prob of Genesis 6% 15% LAT (deg N) 16.0 16.1 16.0 15.9 15.4 14.1 12.7 11.8 11.6 11.8 12.1 12.4 12.7 LON (deg W) 111.8 112.4 113.0 113.6 114.3 115.9 117.7 119.1 120.0 121.0 122.4 124.3 126.3 DTL (km) 789 796 828 864 947 1158 1395 1565 1640 1702 1766 1868 1990 TRACK SOURCE AVNI AVNI AVNI AVNI AVNI AVNI AVNI TABM TABM TABM TABM TABM TABM TCGI 0-48h Genesis Forecast: 6% is 0.1 times the sample mean ( 44%) TCGI 0-120h Genesis Forecast: 15% is 0.3 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 2.0 0.0% -2.0 1.9 0.2% VORTICITY 1.6 0.9 4.1% 1.5 0.7 4.3% VERTICAL SHEAR 12.9 35.5 0.0% 14.9 30.0 7.6% RH 79.1 60.6 1.0% 74.8 67.3 2.1% GOES 42.9 0.3 0.0% 42.8 0.3 0.0% DVORAK 0.9 0.5 0.8% 0.9 0.5 0.6% --------------------------------------------------------------------------------------------- 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 2.1, February 2018