*         NE PACIFIC TC GENESIS INDEX          *
                      *                GFS VERSION                   *
                      *           EP902021 07/30/21 18 UTC           *

TIME (hr)           0     6    12    18    24    36    48    60    72    84    96   108   120
Prob of Genesis                                       75%                                 81%

LAT  (deg N)     12.6  13.3  13.8  14.1  14.6  15.1  15.6  16.1  16.1  15.9  15.8  15.1  14.0
LON  (deg W)    112.7 113.9 115.1 116.3 117.3 119.9 121.8 124.0 125.5 127.0 128.4 129.5 130.1
DTL  (km)        1117  1143  1145  1181  1200  1338  1423  1555  1680  1811  1920  2059  2192
TRACK SOURCE     AP15  AP15  AP15  AP15  AP15  AP15  AP15  AP15  AP15  AP15  AP15  AP15  AP15

TCGI  0-48h Genesis Forecast:   75% is  1.7 times the sample mean (  44%)
TCGI 0-120h Genesis Forecast:   81% is  1.4 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   -2.0   6.0%      -2.0   -0.4   6.7%
VORTICITY          1.6    1.2  12.8%       1.5    1.0  12.7%
VERTICAL SHEAR    12.9    6.1  19.2%      14.9    6.1  33.8%
RH                79.1   82.9  10.7%      74.8   81.1   7.1%
GOES              42.9   45.5   9.3%      42.8   45.5   7.8%
DVORAK             0.9    2.0  17.5%       0.9    2.0  12.8%

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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