* ATLANTIC TC GENESIS INDEX * * GFS VERSION * * AL922022 08/29/22 06 UTC * TIME (hr) 0 6 12 18 24 36 48 60 72 84 96 108 120 Prob of Genesis 8% 13% LAT (deg N) 32.2 31.9 31.6 31.3 31.0 30.8 31.5 32.9 33.9 33.8 33.2 32.8 33.1 LON (deg W) 54.4 54.2 54.1 54.0 54.1 54.3 55.0 56.4 57.3 57.1 56.3 55.7 55.3 DTL (km) 1560 1598 1632 1667 1695 1710 1615 1420 1286 1303 1393 1459 1440 TRACK SOURCE AVNI AVNI AVNI AVNI AVNI AVNI AVNI AVNI TABM TABM TABM TABM TABM TCGI 0-48h Genesis Forecast: 8% is 0.3 times the sample mean ( 30%) TCGI 0-120h Genesis Forecast: 13% is 0.3 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 0.3 1.7% 1.0 -0.2 4.0% VORTICITY 1.7 -0.1 0.9% 1.4 -0.4 0.9% VERTICAL SHEAR 16.3 30.7 2.8% 18.4 26.3 5.0% RH 73.1 57.2 0.0% 70.9 60.3 0.7% GOES 29.1 1.6 0.0% 29.3 1.6 0.0% DVORAK 0.8 1.0 2.2% 0.8 1.0 2.3% --------------------------------------------------------------------------------------------- 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