* NE PACIFIC TC GENESIS INDEX * * GFS VERSION * * EP032021 06/16/21 18 UTC * TIME (hr) 0 6 12 18 24 36 48 60 72 84 96 108 120 Prob of Genesis 15% 18% LAT (deg N) 7.1 7.0 7.0 6.9 6.9 6.9 6.8 6.6 6.5 6.7 7.5 8.2 8.7 LON (deg W) 135.4 135.8 136.2 136.6 137.0 138.0 139.6 141.7 144.4 147.6 150.2 152.4 154.7 DTL (km) 2504 2476 2446 2414 2378 2292 2165 2013 1834 1608 1396 1242 1140 TRACK SOURCE TABM TABM TABM TABM TABM TABM TABM TABM TABM TABM TABM TABM TABM TCGI 0-48h Genesis Forecast: 15% is 0.3 times the sample mean ( 44%) TCGI 0-120h Genesis Forecast: 18% 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 2.1 0.0% -2.0 1.9 0.2% VORTICITY 1.6 0.6 3.2% 1.5 -0.1 1.4% VERTICAL SHEAR 12.9 8.0 6.7% 14.9 12.2 12.1% RH 79.1 68.4 2.0% 74.8 66.5 2.1% GOES 42.9 6.9 0.4% 42.8 6.9 0.4% DVORAK 0.9 1.0 2.7% 0.9 1.0 2.1% --------------------------------------------------------------------------------------------- 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