Tropical Depression 28W

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              
     20221112 151904 -930.0      N/A   N/A     N/A    0.00  25.0  AMSR2  21.6 -165.0   21.6 -165.0   21.0 -164.3 Analysis Plot     
     20221112 183311  -18.0      N/A 100.0%  33.33    2.99  25.0 SSMI18  21.7 -164.9   21.7 -164.9   22.0 -166.4 Analysis Plot     
     20221112 190351 -930.0      N/A   N/A     N/A    0.00  25.0 SSMI16  21.7 -164.9   21.7 -164.9   22.4 -164.5 Analysis Plot     
     20221112 212210    N/A      N/A   N/A     N/A     N/A  35.0 SSMI17  22.0 -165.7   22.0 -165.7   22.0 -166.4 Analysis Plot     
     20221113 021255   -7.2      N/A  13.7% 244.42    7.23  35.0  AMSR2  22.2 -166.0   22.2 -166.0   22.2 -165.9 Analysis Plot     
     20221113 045816   -3.4      N/A  10.6% 277.75    3.36  35.0 SSMI18  22.4 -166.0   22.4 -166.0   22.0 -166.2 Analysis Plot     
     20221113 052915 -930.0      N/A   N/A     N/A    0.00  35.0 SSMI16  22.4 -166.0   22.4 -166.0   21.9 -166.4 Analysis Plot     
     20221113 073449 -930.0      N/A   N/A     N/A    0.00  35.0 SSMI17  22.4 -166.0   22.4 -166.0   21.9 -166.1 Analysis Plot     
     20221113 142244   -1.1      N/A   N/A   11.11    1.07  35.0  AMSR2  22.6 -165.7   22.6 -165.7   22.6 -165.9 Analysis Plot     
     20221113 182058 -930.0      N/A   N/A     N/A    0.00  35.0 SSMI18  22.8 -165.7   22.8 -165.7   22.9 -165.8 Analysis Plot     
     20221113 190302   -0.7      N/A   N/A   55.55     .68  35.0 SSMI16  22.9 -165.7   22.9 -165.7   23.0 -166.4 Analysis Plot     
     20221113 210912   -1.8      N/A   N/A   22.22    1.76  30.0 SSMI17  23.3 -166.0   23.3 -166.0   23.5 -166.1 Analysis Plot     
     20221113 230957   -2.1      N/A   N/A   33.33    2.14  30.0    GMI  23.8 -166.0   23.8 -166.0   24.1 -166.1 Analysis Plot     
     20221114 044512   -4.3      N/A   N/A  266.64    4.31  30.0 SSMI18  24.8 -165.7   24.8 -165.7   24.8 -165.9 Analysis Plot     
     20221114 072112   -3.2      N/A   N/A  133.32    3.16  30.0 SSMI17  25.5 -165.8   25.5 -165.8   25.1 -166.5 Analysis Plot     
     20221114 123056   -8.4      N/A   9.6% 188.87    8.36  30.0    GMI  27.3 -166.3   27.3 -166.3   27.2 -166.8 Analysis Plot     
     20221114 150354    N/A      N/A   N/A     N/A     N/A  30.0  AMSR2  28.3 -166.6   28.3 -166.6   28.1 -166.5 Analysis Plot     
     20221114 180901    N/A      N/A   N/A     N/A     N/A  30.0 SSMI18  28.9 -166.8   28.9 -166.8   29.5 -166.7 Analysis Plot     
     20221114 204341   -2.5      N/A  20.5% 133.32    2.50  30.0 SSMI17  30.0 -167.3   30.0 -167.3   29.6 -166.7 Analysis Plot     
     20221114 221539 -930.0      N/A   N/A     N/A    0.00  30.0    GMI  31.1 -167.8   31.1 -167.8   30.9 -167.4 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.