*         NE PACIFIC TC GENESIS INDEX          *
                      *                GFS VERSION                   *
                      *           EP912021 08/01/21 06 UTC           *

TIME (hr)           0     6    12    18    24    36    48    60    72    84    96   108   120
Prob of Genesis                                       69%                                 93%

LAT  (deg N)     15.4  16.4  17.4  17.7  18.6  19.0  19.3  19.3  19.2  18.7  18.2  17.4  16.5
LON  (deg W)    108.9 110.1 111.8 113.3 115.0 118.4 122.7 125.6 128.9 132.5 136.2 139.4 142.1
DTL  (km)         606   633   639   672   705   900  1227  1433  1712  2052  1962  1641  1379
TRACK SOURCE     AP21  AP21  AP21  AP21  AP21  AP21  AP21  TABM  TABM  TABM  TABM  TABM  TABM

TCGI  0-48h Genesis Forecast:   69% is  1.6 times the sample mean (  44%)
TCGI 0-120h Genesis Forecast:   93% is  1.7 times the sample mean (  56%)

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INDIVIDUAL PREDICTOR CONTRIBUTIONS TO PROBABILITY OF GENESIS 

               *******  48-HR ******   ******* 120-HR ******
                   AVG   TCGI   CONT       AVG   TCGI   CONT
DIVERGENCE        -2.0   -2.6   6.7%      -2.0   -1.6   9.8%
VORTICITY          1.6    2.5  21.1%       1.5    3.0  29.6%
VERTICAL SHEAR    12.9   12.9  14.1%      14.9    8.5  32.3%
RH                79.1   77.7   8.7%      74.8   76.5   7.1%
GOES              42.9   31.3   6.2%      42.8   31.3   5.3%
DVORAK             0.9    1.5  12.2%       0.9    1.5   9.0%

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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