Hurricane 16L

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              
     20221101 164149   -5.0      N/A  16.4%  22.22    5.03  45.0  AMSR2  35.3   55.7   35.1   55.7   35.1   55.7 Analysis Plot     
     20221101 195858   -5.7      N/A   N/A   33.33    5.75  45.0 SSMI16  35.3   55.0   35.3   55.0   35.2   54.9 Analysis Plot     
     20221101 220838   -1.2      N/A   4.1%  44.44    1.24  50.0 SSMI17  35.4   54.5   35.4   54.5   35.0   54.5 Analysis Plot     
     20221102 090238    N/A      N/A   N/A     N/A     N/A  55.0 SSMI18  35.2   52.4   35.2   52.4   35.2   52.5 Analysis Plot     
     20221102 114504    7.3      N/A   5.5%  66.66    7.30  55.0 SSMI17  35.5   51.6   35.5   51.6   35.0   51.9 Analysis Plot     
     20221102 194552    7.3      N/A  27.4%  99.99    7.26  65.0 SSMI16  36.2   48.6   36.4   48.5   36.4   48.5 Analysis Plot     
     20221102 203858    8.0      N/A  37.0% 111.10    7.99  65.0 SSMI18  36.4   48.2   36.4   48.8   36.4   48.8 Analysis Plot     
     20221103 064221    1.5      N/A  30.1%  33.33    1.50  75.0    GMI  41.1   43.0   40.7   43.2   40.7   43.2 Analysis Plot     
     20221103 064223 -930.0      N/A   N/A     N/A    0.00  75.0    GMI  41.1   43.0   41.1   42.5   41.1   42.5 Analysis Plot     
     20221103 084943    3.8      N/A   1.4% 122.21    3.83  75.0 SSMI18  41.3   42.1   41.3   42.1   41.2   42.2 Analysis Plot     
     20221103 092251    5.1      N/A  17.8% 111.10    5.14  75.0 SSMI16  41.6   41.7   41.6   41.7   41.5   41.8 Analysis Plot     
     20221103 113128    6.0      N/A  12.3%  88.88    5.97  75.0 SSMI17  42.9   40.5   42.9   40.5   42.3   40.9 Analysis Plot     
     20221103 144608   11.0      N/A   1.4% 166.65   11.00  75.0    GMI  45.6   38.6   46.3   37.0   46.3   37.0 Analysis Plot     
     20221103 145440 -930.0      N/A   N/A     N/A    0.00  75.0  AMSR2  45.1   38.2   45.1   38.2   44.5   39.1 Analysis Plot     
     20221103 171334 -930.0      N/A   N/A     N/A    0.00  75.0 SSMI18  46.6   37.4   46.6   37.4   45.8   37.5 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.