Tropical Depression 17E

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              
     20160918 091848   -3.8      N/A  13.7% 166.65    3.79  35.0  AMSR2  17.4  110.9   17.4  110.9   17.5  110.4 Analysis Plot     
     20160918 105946   -5.4      N/A  34.2% 222.20    5.37  35.0 SSMI15  17.5  111.1   17.5  111.1   17.6  110.6 Analysis Plot     
     20160918 135700   -0.0      N/A   N/A     N/A    0.00  35.0 SSMI18  17.4  111.3   17.4  111.3   17.3  111.2 Analysis Plot     
     20160918 235300  -14.8      N/A  84.9%  44.44   14.81  50.0 SSMI16  18.6  113.1   18.6  113.1   18.8  113.5 Analysis Plot     
     20160919 025215   20.0  >65 kts  37.1%  44.44   20.04  55.0    GMI  19.5  113.8   19.5  113.8   19.4  113.6 Analysis Plot     
     20160919 104426   60.0  >85 kts 100.0%  55.55   45.04  65.0 SSMI15  20.9  114.8   20.8  114.9   20.8  114.9 Analysis Plot     
     20160919 134400   60.0  >85 kts 100.0%  66.66   44.95  75.0 SSMI16  21.4  115.1   21.2  115.3   21.2  115.3 Analysis Plot     
     20160919 161104 -930.0      N/A   N/A     N/A    0.00  75.0    GMI  22.2  115.5   22.0  115.8   22.0  115.8 Analysis Plot     
     20160919 205552   16.1      N/A  45.2%  77.77   16.06  80.0  AMSR2  22.7  116.2   22.8  116.5   22.8  116.5 Analysis Plot     
     20160920 015700    3.6      N/A   6.8% 133.32    3.61  70.0 SSMI17  23.7  116.7   23.7  116.7   23.4  116.7 Analysis Plot     
     20160920 023900    2.6      N/A   N/A  155.54    2.56  70.0 SSMI18  23.9  116.7   23.9  116.7   23.4  116.7 Analysis Plot     
     20160920 090524 -930.0      N/A   N/A     N/A    0.00  55.0  AMSR2  24.9  116.8   24.9  116.8   24.7  117.0 Analysis Plot     
     20160920 142800   -2.6      N/A   N/A   66.66    2.63  45.0 SSMI17  26.1  117.0   26.1  117.0   26.3  116.8 Analysis Plot     
     20160920 151000   -0.1      N/A   N/A   22.22     .12  45.0 SSMI18  26.2  117.0   26.2  117.0   26.4  116.8 Analysis Plot     
     20160920 232700   -4.1      N/A   N/A   88.88    4.14  35.0 SSMI16  27.3  116.9   27.3  116.9   27.6  116.3 Analysis Plot     
     20160921 024057   -2.6      N/A   N/A   55.55    2.58  30.0    GMI  28.0  116.5   28.0  116.5   28.1  116.2 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.