* NE PACIFIC TC GENESIS INDEX * * GFS VERSION * * EP912021 05/30/21 12 UTC * TIME (hr) 0 6 12 18 24 36 48 60 72 84 96 108 120 Prob of Genesis 51% 55% LAT (deg N) 9.8 10.3 10.8 11.0 11.2 11.7 13.0 13.0 13.6 13.8 13.9 13.8 14.2 LON (deg W) 102.6 102.6 103.4 105.3 107.6 110.0 110.4 112.4 113.0 113.8 114.7 115.4 116.3 DTL (km) 830 779 764 823 912 1005 913 1063 1070 1087 1116 1160 1172 TRACK SOURCE AP24 AP24 AP24 AP24 AP24 AP24 AP24 AP24 AP24 AP24 AP24 AP24 AP24 TCGI 0-48h Genesis Forecast: 51% is 1.2 times the sample mean ( 44%) TCGI 0-120h Genesis Forecast: 55% is 1.0 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 0.1 2.3% -2.0 0.6 3.0% VORTICITY 1.6 1.4 11.5% 1.5 1.4 12.5% VERTICAL SHEAR 12.9 7.2 15.4% 14.9 11.1 24.1% RH 79.1 84.1 8.3% 74.8 76.7 5.6% GOES 42.9 22.3 3.7% 42.8 22.3 2.9% DVORAK 0.9 1.5 10.3% 0.9 1.5 7.1% --------------------------------------------------------------------------------------------- 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