Hurricane 08L


Passive Microwave (PMW) Intensity Information
Advanced Dvorak Technique (ADT)
Version 8.2.1
 

         Overpass     Inten           Ring    Ring          Wind           Forecast        Final        Target  
       Date    Time   Score  Meaning   Pct    Diam  BTdiff   Est   Sat    Lat    Lon    Lat    Lon    Lat    Lon              
     20170813 110000 -930.0      N/A   N/A     N/A    0.00  30.0 SSMI17  26.9   71.1   26.9   71.1   26.9   71.5 Analysis Plot     
     20170813 112000   -4.6      N/A   5.5%  77.77    4.55  30.0 SSMI18  27.0   71.2   27.0   71.2   27.2   71.3 Analysis Plot     
     20170813 223900   -4.0      N/A  13.7% 155.54    3.97  35.0 SSMI18  28.4   71.8   28.4   71.8   28.0   72.3 Analysis Plot     
     20170814 063531   -5.1      N/A  13.7% 166.65    5.12  40.0  AMSR2  29.5   72.1   29.5   72.1   29.4   72.5 Analysis Plot     
     20170814 110400   -1.8      N/A  27.4% 155.54    1.77  40.0 SSMI16  29.7   72.2   29.7   72.2   29.3   72.5 Analysis Plot     
     20170814 110700   -3.1      N/A  31.5% 199.98    3.15  40.0 SSMI18  30.1   72.3   30.1   72.3   29.7   72.5 Analysis Plot     
     20170814 133819   -0.0      N/A   N/A     N/A    0.00  50.0    GMI  30.1   72.2   30.1   72.2   29.6   72.2 Analysis Plot     
     20170814 205300   44.9  >65 kts 100.0%  77.77   29.92  60.0 SSMI16  30.4   72.3   30.4   72.3   30.4   72.5 Analysis Plot     
     20170814 232225    4.7      N/A  31.5%  66.66    4.71  60.0    GMI  30.9   72.3   30.6   72.3   30.6   72.3 Analysis Plot     
     20170815 081703   23.1  >65 kts  27.4%  66.66   23.12  65.0 SSMI15  31.8   72.5   31.7   72.3   31.7   72.3 Analysis Plot     
     20170815 094400   20.4  >65 kts  23.3%  55.55   20.42  65.0 SSMI16  31.8   72.5   31.9   72.3   31.9   72.3 Analysis Plot     
     20170815 121200   36.8  >65 kts 100.0%  66.66   21.83  65.0 SSMI17  32.4   72.2   32.4   72.2   32.2   72.2 Analysis Plot     
     20170815 193222    4.6      N/A  24.7%  44.44    4.63  70.0 SSMI15  33.5   71.3   33.5   71.3   33.3   71.5 Analysis Plot     
     20170815 221600   37.9  >65 kts 100.0%  44.44   22.87  70.0 SSMI18  34.1   70.8   34.1   70.8   33.9   71.0 Analysis Plot     
     20170816 075311    0.9      N/A  43.8%  33.33     .87  80.0 SSMI15  35.9   68.6   35.8   68.7   35.8   68.7 Analysis Plot     
     20170816 092600   11.7      N/A  75.3%  33.33   11.72  80.0 SSMI16  36.0   68.4   36.2   68.3   36.2   68.3 Analysis Plot     
     20170816 104100 -930.0      N/A   N/A     N/A    0.00  80.0 SSMI18  36.4   67.7   36.5   67.5   36.5   67.5 Analysis Plot     
     20170816 132942 -930.0      N/A   N/A     N/A    0.00  80.0    GMI  37.1   66.4   37.1   66.4   37.1   66.4 Analysis Plot     
     20170816 213614   55.3  >65 kts 100.0%  22.22   40.35  85.0    GMI  38.8   62.1   38.8   61.9   38.8   61.9 Analysis Plot     
     20170816 214000   38.3  >65 kts 100.0%  22.22   23.35  85.0 SSMI17  39.0   61.6   38.9   61.8   38.9   61.8 Analysis Plot     
     20170816 220400   38.0  >65 kts 100.0%  22.22   23.03  85.0 SSMI18  39.0   61.3   38.9   61.6   38.9   61.6 Analysis Plot     
     20170817 052445   30.9  >65 kts  91.8%  33.33   15.88  85.0  AMSR2  40.7   56.0   40.6   56.4   40.6   56.4 Analysis Plot     
     20170817 100100    8.0      N/A  16.4% 111.10    8.03  85.0 SSMI17  42.1   53.0   41.5   53.1   41.5   53.1 Analysis Plot     
     20170817 102500    5.1      N/A   N/A   77.77    5.07  85.0 SSMI18  42.2   52.7   41.7   52.9   41.7   52.9 Analysis Plot     
     20170817 123953 -930.0      N/A   N/A     N/A    0.00  85.0    GMI  42.7   51.3   42.7   51.3   43.0   51.8 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.