Tropical Storm 19L

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              
     20171106 093000   -3.5      N/A  46.6%  66.66    3.48  30.0 SSMI16  28.9   50.3   28.9   50.3   28.3   50.5 Analysis Plot     
     20171106 103800   -1.1      N/A  23.3%  33.33    1.05  30.0 SSMI17  29.0   50.0   29.0   50.0   28.7   50.5 Analysis Plot     
     20171106 182540   -5.4      N/A   9.6% 133.32    5.42  30.0 SSMI15  29.7   50.3   29.7   50.3   29.6   50.3 Analysis Plot     
     20171106 215800   -6.3      N/A  19.2%  77.77    6.33  30.0 SSMI17  30.1   50.0   30.1   50.0   30.1   49.9 Analysis Plot     
     20171107 070711   -8.3      N/A  13.7%  33.33    8.28  35.0 SSMI15  31.0   49.8   31.0   49.8   31.0   49.7 Analysis Plot     
     20171107 101700   -6.4      N/A  11.0%  66.66    6.45  35.0 SSMI18  31.7   49.7   31.7   49.7   31.7   49.3 Analysis Plot     
     20171107 115035 -930.0      N/A   N/A     N/A    0.00  35.0    GMI  32.0   49.7   32.0   49.7   32.2   49.3 Analysis Plot     
     20171107 161441   -7.5      N/A   1.4%  44.44    7.54  35.0  AMSR2  32.5   49.3   32.5   49.3   33.0   49.0 Analysis Plot     
     20171107 214500   -6.4      N/A  24.7% 155.54    6.39  40.0 SSMI17  34.2   48.8   34.2   48.8   34.2   48.2 Analysis Plot     
     20171108 081800   -2.0      N/A   N/A   66.66    2.03  50.0 SSMI16  36.5   48.5   36.5   48.5   37.3   48.4 Analysis Plot     
     20171108 105930 -930.0      N/A   N/A     N/A    0.00  50.0    GMI  37.7   48.3   37.7   48.3   38.0   48.4 Analysis Plot     
     20171108 204000   -8.9      N/A   N/A  111.10    8.88  45.0    GMI  40.8   48.6   40.8   48.6   40.3   49.0 Analysis Plot     
     20171108 212800   -6.2      N/A  12.3% 111.10    6.23  45.0 SSMI18  40.8   48.6   40.8   48.6   40.5   49.1 Analysis Plot     
     20171108 213300   -3.4      N/A  37.0%  66.66    3.37  45.0 SSMI17  41.3   48.5   41.3   48.5   40.7   48.7 Analysis Plot     
     20171109 114457   -7.9      N/A   8.2% 122.21    7.87  40.0    GMI  45.7   46.2   45.7   46.2   45.7   46.0 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.