* ATLANTIC TC GENESIS INDEX * * GFS VERSION * * AL942024 10/11/24 00 UTC * TIME (hr) 0 6 12 18 24 36 48 60 72 84 96 108 120 Prob of Genesis 27% 64% LAT (deg N) 14.9 15.4 15.8 16.2 16.4 16.6 16.9 16.9 16.4 15.9 15.4 15.0 14.6 LON (deg W) 22.0 23.5 24.9 26.3 27.4 29.2 30.9 32.7 34.7 36.6 38.8 41.1 43.5 DTL (km) 483 647 800 955 1074 1267 1451 1641 1849 2050 1856 1651 1452 TRACK SOURCE AVNI AVNI AVNI AVNI AVNI AVNI AVNI AVNI AVNI AVNI AVNI AVNI AVNI TCGI 0-48h Genesis Forecast: 27% is 0.9 times the sample mean ( 30%) TCGI 0-120h Genesis Forecast: 64% is 1.5 times the sample mean ( 43%) --------------------------------------------------------------------------------------------- INDIVIDUAL PREDICTOR CONTRIBUTIONS TO PROBABILITY OF GENESIS ******* 48-HR ****** ******* 120-HR ****** AVG TCGI CONT AVG TCGI CONT DIVERGENCE -1.0 2.1 1.2% 1.0 1.0 6.8% VORTICITY 1.7 3.7 11.2% 1.4 3.0 27.2% VERTICAL SHEAR 16.3 13.7 12.2% 18.4 9.1 24.2% RH 73.1 66.5 -0.1% 70.9 67.2 2.8% GOES 29.1 25.1 0.9% 29.3 25.1 0.9% DVORAK 0.8 0.5 1.3% 0.8 0.5 1.9% --------------------------------------------------------------------------------------------- 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