Tropical Depression 23E

Passive Microwave (PMW) Intensity Information
Hurricane Intensity Estimation (HIE) Algorithm
Version 9.0


         Overpass     Inten           Ring    Ring          Wind           Forecast        Final        Target  
       Date    Time   Score  Meaning   Pct    Diam  BTdiff   Est   Sat    Lat    Lon    Lat    Lon    Lat    Lon              
     20181019 211937    N/A      N/A   N/A     N/A     N/A  35.0 SSMI15  13.3   92.3   13.3   92.3   13.4   92.1 Analysis Plot     
     20181019 234701    N/A      N/A   N/A     N/A     N/A  35.0 SSMI18  13.4   92.4   13.4   92.4   13.4   92.3 Analysis Plot     
     20181020 012643    N/A      N/A   N/A     N/A     N/A  35.0 SSMI18  13.5   92.4   13.5   92.4   13.4   92.2 Analysis Plot     
     20181020 081934 -930.0      N/A   N/A     N/A    0.00  35.0  AMSR2  14.0   93.1   14.0   93.1   14.1   92.9 Analysis Plot     
     20181020 110010   -4.3      N/A  17.8%  55.55    4.29  35.0 SSMI16  14.0   93.2   14.0   93.2   14.2   92.8 Analysis Plot     
     20181020 135033   -6.3      N/A  13.7%  99.99    6.32  35.0 SSMI17  14.3   93.4   14.3   93.4   14.3   93.2 Analysis Plot     
     20181020 191106   -3.2      N/A  13.7%  55.55    3.18  45.0    GMI  14.5   94.2   14.5   94.2   14.5   94.1 Analysis Plot     
     20181020 233638   -2.0      N/A   N/A   77.77    2.03  45.0 SSMI18  14.6   94.5   14.6   94.5   14.6   94.6 Analysis Plot     
     20181021 012339   -2.2      N/A   2.7%  77.77    2.15  45.0 SSMI18  14.7   94.6   14.7   94.6   14.6   94.6 Analysis Plot     
     20181021 082627   -4.0      N/A  34.3%  22.22    4.02  45.0    GMI  14.5   95.9   14.5   95.9   14.5   96.1 Analysis Plot     
     20181021 082639 -930.0      N/A   N/A     N/A    0.00  45.0    GMI  14.5   95.9   14.5   95.9   15.1   96.2 Analysis Plot     
     20181021 101507   -5.4      N/A  47.9%  66.66    5.35  45.0 SSMI15  14.5   96.2   14.5   96.2   14.6   96.2 Analysis Plot     
     20181021 130855   -0.9      N/A  50.7%  44.44     .86  45.0 SSMI18  14.5   96.4   14.5   96.4   14.5   96.6 Analysis Plot     
     20181021 222236 -930.0      N/A   N/A     N/A    0.00  35.0 SSMI16  14.2   98.0   14.2   98.0   13.9   98.9 Analysis Plot     
     20181022 001109   -1.2      N/A  11.0% 111.10    1.15  35.0 SSMI16  14.2   98.3   14.2   98.3   14.3   98.1 Analysis Plot     
     20181022 011515   -1.0      N/A  32.9% 222.20     .98  35.0 SSMI17  14.0   98.3   14.0   98.3   14.4   98.0 Analysis Plot     
     20181022 025511 -930.0      N/A   N/A     N/A    0.00  35.0 SSMI17  13.9   98.6   13.9   98.6   14.5   98.1 Analysis Plot     
     20181022 080636    N/A      N/A   N/A     N/A     N/A  40.0  AMSR2  14.1   99.6   14.1   99.6   14.1   99.6 Analysis Plot     
     20181022 100126 -930.0      N/A   N/A     N/A    0.00  40.0 SSMI15  14.2   99.8   14.2   99.8   13.9  100.2 Analysis Plot     
     20181022 122635   -1.2      N/A   9.6%  88.88    1.19  40.0 SSMI16  14.3  100.0   14.3  100.0   14.8   99.6 Analysis Plot     
     20181022 190040   -3.7      N/A  43.8%  33.33    3.71  40.0    GMI  15.3  101.3   15.3  101.3   15.4  100.9 Analysis Plot     
     20181022 203717 -930.0      N/A   N/A     N/A    0.00  35.0  AMSR2  15.3  101.4   15.3  101.4   16.6  101.6 Analysis Plot     
     20181022 221225   -1.4      N/A   5.5%  99.99    1.36  35.0 SSMI16  15.4  101.5   15.4  101.5   15.8  101.1 Analysis Plot     
     20181022 235758   -1.3      N/A   N/A   99.99    1.25  35.0 SSMI16  15.7  101.8   15.7  101.8   15.9  101.1 Analysis Plot     
     20181023 024131   -0.7      N/A  41.1%  44.44     .72  35.0 SSMI17  16.2  101.8   16.2  101.8   16.1  101.5 Analysis Plot     
     20181023 081714 -930.0      N/A   N/A     N/A    0.00  30.0    GMI  17.1  101.9   17.1  101.9   16.9  102.8 Analysis Plot     
     20181023 084856 -930.0      N/A   N/A     N/A    0.00  30.0  AMSR2  17.3  102.0   17.3  102.0   17.4  101.7 Analysis Plot     
     20181023 121323   -2.5      N/A  31.5%  44.44    2.47  30.0 SSMI16  17.6  102.3   17.6  102.3   17.8  101.8 Analysis Plot     
     20181023 150436   -1.2      N/A   N/A   22.22    1.19  25.0 SSMI17  18.2  102.3   18.2  102.3   17.8  102.1 Analysis Plot     
     20181023 220715   -1.3      N/A   N/A   33.33    1.31  25.0 SSMI16  19.3  102.9   19.3  102.9   19.4  102.6 Analysis Plot

Legend:

  - Date/Time are determined from PMW imagery at Forecast (initial guess) Lat/Lon position.

  - Positive/Negative Latitude = North/South Hemisphere; Longitude = Western/Eastern Hemisphere.

  - "Ring Diam" value indicates the estimated surface eyewall diameter in km (the MI eyewall edge diameter minus 10 km).

  - "Ring Pct" is the percentage of the "ring" (eyewall inner boundary) that is 1) colder than the "hot spot" (warmest eye pixel) in the eye by 20K, or 2) the percentage that is a) colder than 232K and b) colder than the "hot spot" by 10K, whichever is greater.
  - Values are red if Ring % <= 65, yellow/brown if Ring % <= 85 and green if Ring % > 85.

  - "Tb diff" is the difference between the "hot spot" (warmest eye pixel) and the warmest pixel on the eyewall.

  - Intensity score are listed as negative, and not used, when the JTWC or NHC estimated Vmax is <55 kts in order to rule out weak but highly symmetric TCs.

  - Error messages in intensity scores: -920 is used when the hottest pixel in the eye is <200K, to prevent false positives; -930 means <85% of eyewall has observations/data.