Tropical Depression 19L

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              
     20200911 222539 -930.0      N/A   N/A     N/A    0.00  30.0 SSMI16  25.4   79.1   25.4   79.1   25.3   78.8 Analysis Plot     
     20200911 233310   -0.5      N/A  23.3% 211.09     .54  30.0 SSMI18  25.5   79.2   25.5   79.2   25.5   79.6 Analysis Plot     
     20200912 065710    N/A      N/A   N/A     N/A     N/A  30.0  AMSR2  25.6   80.5   25.6   80.5   25.5   80.5 Analysis Plot     
     20200912 115255   -2.7      N/A   N/A   55.55    2.74  30.0 SSMI18  25.7   81.0   25.7   81.0   25.8   80.7 Analysis Plot     
     20200912 233007   -0.2      N/A   8.2% 211.09     .16  35.0 SSMI18  25.8   82.1   25.8   82.1   26.0   82.4 Analysis Plot     
     20200913 095452   -0.4      N/A   2.7% 122.21     .38  45.0 SSMI15  27.1   84.2   27.1   84.2   27.2   84.5 Analysis Plot     
     20200913 115444   -1.4      N/A   N/A  144.43    1.45  45.0 SSMI16  27.2   84.3   27.2   84.3   27.3   84.8 Analysis Plot     
     20200913 183816   -2.1      N/A  28.8%  33.33    2.10  50.0  AMSR2  27.7   85.4   27.7   85.4   27.8   85.1 Analysis Plot     
     20200913 205018 -930.0      N/A   N/A     N/A    0.00  50.0    GMI  27.8   85.9   27.8   85.9   28.5   85.4 Analysis Plot     
     20200913 215920   -2.3      N/A   N/A  211.09    2.33  50.0 SSMI16  27.8   85.9   27.8   85.9   27.8   86.2 Analysis Plot     
     20200914 093447 -930.0      N/A   N/A     N/A    0.00  50.0 SSMI15  28.3   87.4   28.3   87.4   27.6   86.3 Analysis Plot     
     20200914 114134   -1.4      N/A   6.8% 188.87    1.36  50.0 SSMI16  28.4   87.5   28.4   87.5   27.6   87.4 Analysis Plot     
     20200914 192127    6.6      N/A  80.8%  33.33    6.59  55.0  AMSR2  28.7   87.2   28.7   87.2   29.0   87.3 Analysis Plot     
     20200914 214620    5.4      N/A  54.8%  55.55    5.41  80.0 SSMI16  28.8   87.4   28.8   87.4   28.9   87.4 Analysis Plot     
     20200915 113924    8.8      N/A   N/A   44.44    8.79  80.0 SSMI16  29.0   88.2   29.0   88.2   29.0   87.8 Analysis Plot     
     20200915 124600   33.4  >65 kts  90.4%  55.55   18.40  80.0 SSMI18  29.0   88.2   29.0   88.2   29.0   87.9 Analysis Plot     
     20200915 204021 -930.0      N/A   N/A     N/A    0.00  75.0    GMI  29.4   88.3   29.5   88.1   29.5   88.1 Analysis Plot     
     20200915 213311   37.3  >65 kts 100.0%  55.55   22.32  70.0 SSMI16  29.5   88.1   29.5   88.1   29.4   87.9 Analysis Plot     
     20200916 003633   55.4  >65 kts 100.0%  77.77   40.42  70.0 SSMI18  29.6   88.1   29.6   88.1   29.5   88.3 Analysis Plot     
     20200916 062510 -930.0      N/A   N/A     N/A    0.00  75.0    GMI  30.0   87.7   30.0   87.7   30.0   87.7 Analysis Plot     
     20200916 062518 -930.0      N/A   N/A     N/A    0.00  75.0    GMI  30.0   87.7   30.0   87.7   29.8   87.8 Analysis Plot     
     20200916 081023    N/A      N/A   N/A     N/A     N/A  90.0  AMSR2  30.1   87.7   30.1   87.7   30.3   88.8 Analysis Plot     
     20200916 113027    9.0      N/A  34.2%  66.66    8.97  90.0 SSMI16  30.2   87.6   30.3   87.5   30.3   87.5 Analysis Plot     
     20200916 124649    6.1      N/A  30.1%  77.77    6.15  90.0 SSMI18  30.3   87.6   30.4   87.7   30.4   87.7 Analysis Plot     
     20200916 223222 -930.0      N/A   N/A     N/A    0.00  60.0 SSMI18  31.3   86.7   31.3   86.7   30.9   87.0 Analysis Plot     
     20200916 230327    1.1      N/A  13.7% 111.10    1.15  60.0 SSMI16  31.3   86.7   31.3   86.7   30.8   86.6 Analysis Plot     
     20200917 002359 -930.0      N/A   N/A     N/A    0.00  60.0 SSMI18  31.4   86.6   31.4   86.6   30.8   86.9 Analysis Plot     
     20200917 071429   -0.5      N/A   N/A   11.11     .54  30.0  AMSR2  31.7   85.9   31.7   85.9   31.8   86.1 Analysis Plot     
     20200917 111309   -0.4      N/A   N/A   11.11     .37  30.0 SSMI16  31.9   85.5   31.9   85.5   31.7   85.6 Analysis Plot     
     20200917 123415   -0.5      N/A   N/A   11.11     .48  30.0 SSMI18  32.1   85.3   32.1   85.3   32.0   85.6 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.