Tropical Depression 12L


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              
     20190922 200530   -3.1      N/A   N/A  111.10    3.07  35.0 SSMI16  12.8   62.5   12.8   62.5   13.2   62.4 Analysis Plot     
     20190922 215613   -2.1      N/A   N/A   99.99    2.09  35.0 SSMI16  12.9   62.7   12.9   62.7   13.3   62.4 Analysis Plot     
     20190922 225339   -1.3      N/A  12.3% 211.09    1.25  35.0 SSMI17  13.0   62.8   13.0   62.8   12.9   63.2 Analysis Plot     
     20190922 230209   -1.5      N/A  13.7% 222.20    1.49  35.0 SSMI17  13.1   63.0   13.1   63.0   13.0   63.2 Analysis Plot     
     20190923 080356   -2.2      N/A   6.8% 211.09    2.17  35.0 SSMI15  13.5   63.8   13.5   63.8   13.8   63.8 Analysis Plot     
     20190923 100706   -1.3      N/A   8.2% 177.76    1.26  35.0 SSMI16  13.6   63.9   13.6   63.9   14.1   64.4 Analysis Plot     
     20190923 103548 -930.0      N/A   N/A     N/A    0.00  35.0 SSMI18  13.6   63.9   13.6   63.9   13.9   64.6 Analysis Plot     
     20190923 125419   -1.6      N/A   6.8% 222.20    1.62  35.0 SSMI18  13.9   64.1   13.9   64.1   14.3   64.6 Analysis Plot     
     20190923 172001   -4.5      N/A   N/A   22.22    4.45  35.0  AMSR2  15.1   64.9   15.1   64.9   15.2   65.2 Analysis Plot     
     20190923 200211   -1.4      N/A   2.7% 144.43    1.39  35.0 SSMI16  15.4   65.1   15.4   65.1   15.2   65.2 Analysis Plot     
     20190923 224025   -1.5      N/A   8.2% 222.20    1.50  30.0 SSMI17  16.0   65.7   16.0   65.7   16.0   66.0 Analysis Plot     
     20190923 232846   -1.8      N/A   8.2% 222.20    1.82  30.0 SSMI17  16.2   65.7   16.2   65.7   16.0   66.0 Analysis Plot     
     20190924 075105   -6.2      N/A  19.2% 144.43    6.17  35.0 SSMI15  16.7   65.8   16.7   65.8   17.0   66.3 Analysis Plot     
     20190924 095406   -1.2      N/A   N/A  111.10    1.20  35.0 SSMI16  16.8   65.8   16.8   65.8   17.0   66.2 Analysis Plot     
     20190924 123132 -930.0      N/A   N/A     N/A    0.00  35.0 SSMI17  17.2   65.8   17.2   65.8   17.8   66.5 Analysis Plot     
     20190924 140139 -930.0      N/A   N/A     N/A    0.00  35.0    GMI  17.5   65.9   17.5   65.9   17.0   65.6 Analysis Plot     
     20190924 180314   -7.8      N/A  38.4% 155.54    7.79  35.0  AMSR2  17.9   65.8   17.9   65.8   17.8   65.6 Analysis Plot     
     20190924 194901 -930.0      N/A   N/A     N/A    0.00  35.0 SSMI16  18.2   65.7   18.2   65.7   17.3   65.9 Analysis Plot     
     20190924 215104    N/A      N/A   N/A     N/A     N/A  40.0 SSMI18  18.0   65.8   18.0   65.8   17.9   66.5 Analysis Plot     
     20190924 222715    N/A      N/A   N/A     N/A     N/A  40.0 SSMI17  18.1   65.8   18.1   65.8   18.0   65.9 Analysis Plot     
     20190924 233301    N/A      N/A   N/A     N/A     N/A  40.0 SSMI18  18.3   65.8   18.3   65.8   18.0   66.4 Analysis Plot     
     20190925 001914    N/A      N/A   N/A     N/A     N/A  40.0 SSMI17  18.4   65.7   18.4   65.7   18.0   65.9 Analysis Plot     
     20190925 061411    N/A      N/A   N/A     N/A     N/A  40.0  AMSR2  19.8   64.8   19.9   64.9   19.9   64.9 Analysis Plot     
     20190925 093845   -1.5      N/A  34.2%  33.33    1.47  40.0 SSMI16  20.5   65.2   20.5   65.2   20.4   65.1 Analysis Plot     
     20190925 121807    N/A      N/A   N/A     N/A     N/A  40.0 SSMI17  21.0   65.1   21.0   65.1   20.9   65.3 Analysis Plot     
     20190925 171000   -2.2      N/A   6.8% 111.10    2.17  40.0  AMSR2  22.0   64.8   22.0   64.8   22.1   64.3 Analysis Plot     
     20190925 221434   -2.6      N/A   1.4% 111.10    2.63  35.0 SSMI17  23.0   64.3   23.0   64.3   23.5   63.8 Analysis Plot     
     20190925 232326   -3.7      N/A   4.1% 155.54    3.66  35.0 SSMI18  23.2   64.2   23.2   64.2   23.4   63.8 Analysis Plot     
     20190925 235452   -2.7      N/A  12.3% 111.10    2.66  35.0 SSMI17  23.3   64.2   23.3   64.2   23.5   63.8 Analysis Plot     
     20190926 092806    N/A      N/A   N/A     N/A     N/A  35.0 SSMI16  25.4   63.5   25.4   63.5   25.2   64.1 Analysis Plot     
     20190926 113927 -930.0      N/A   N/A     N/A    0.00  35.0 SSMI18  25.8   63.4   25.8   63.4   26.8   64.4 Analysis Plot     
     20190926 121408   -0.3      N/A   6.8%  66.66     .28  35.0 SSMI17  25.9   63.4   25.9   63.4   26.7   64.5 Analysis Plot     
     20190926 230858 -930.0      N/A   N/A     N/A    0.00  40.0 SSMI18  27.3   62.8   27.3   62.8   28.5   63.8 Analysis Plot     
     20190926 234114 -930.0      N/A   N/A     N/A    0.00  40.0 SSMI17  27.4   62.7   27.4   62.7   26.4   63.0 Analysis Plot     
     20190927 055929   -2.8      N/A  17.8% 166.65    2.78  40.0  AMSR2  28.0   61.7   28.0   61.7   28.5   61.7 Analysis Plot     
     20190927 112640   -1.5      N/A   8.2% 166.65    1.51  35.0 SSMI18  28.4   61.0   28.4   61.0   28.9   60.7 Analysis Plot     
     20190927 120046   -1.3      N/A  13.7% 133.32    1.32  35.0 SSMI17  28.4   61.0   28.4   61.0   28.6   60.8 Analysis Plot     
     20190927 125657 -930.0      N/A   N/A     N/A    0.00  35.0    GMI  28.5   60.7   28.5   60.7   28.7   60.9 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.