Tropical Depression 01L


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              
     20180525 211700   -3.1      N/A   N/A   22.22    3.06  35.0 SSMI16  19.4   86.3   19.4   86.3   18.7   85.9 Analysis Plot     
     20180526 074606   -3.4      N/A   8.2%  66.66    3.41  35.0  AMSR2  19.8   85.6   19.8   85.6   19.7   85.6 Analysis Plot     
     20180526 084213   -2.9      N/A   5.5%  44.44    2.88  35.0 SSMI15  19.9   85.6   19.9   85.6   19.9   85.2 Analysis Plot     
     20180526 111100   -0.0      N/A   N/A     N/A    0.00  35.0 SSMI16  20.0   85.6   20.0   85.6   19.9   85.3 Analysis Plot     
     20180526 184056   -5.7      N/A   9.6%  66.66    5.67  35.0  AMSR2  22.8   85.2   22.8   85.2   23.3   84.3 Analysis Plot     
     20180527 002700 -930.0      N/A   N/A     N/A    0.00  35.0 SSMI17  23.6   84.7   23.6   84.7   23.5   84.3 Analysis Plot     
     20180527 082444 -930.0      N/A   N/A     N/A    0.00  35.0 SSMI15  24.9   84.2   24.9   84.2   24.2   83.3 Analysis Plot     
     20180527 105700   -2.7      N/A  27.4%  99.99    2.69  35.0 SSMI16  25.1   84.2   25.1   84.2   26.0   83.7 Analysis Plot     
     20180527 125819   -1.9      N/A  24.7% 133.32    1.89  40.0    GMI  26.7   84.4   26.7   84.4   27.1   84.3 Analysis Plot     
     20180527 192615 -930.0      N/A   N/A     N/A    0.00  45.0  AMSR2  27.8   84.9   28.2   85.1   28.2   85.1 Analysis Plot     
     20180527 205100   -3.5      N/A  32.9% 177.76    3.48  45.0 SSMI16  27.8   85.0   27.8   85.0   28.1   85.4 Analysis Plot     
     20180528 001400    5.7      N/A  12.3% 222.20    5.75  55.0 SSMI17  28.4   85.7   28.4   85.7   28.0   85.8 Analysis Plot     
     20180528 073106    3.4      N/A   N/A  188.87    3.37  55.0  AMSR2  28.6   86.2   28.6   86.2   28.6   86.0 Analysis Plot     
     20180528 120700   -2.9      N/A  16.4%  88.88    2.89  50.0 SSMI18  29.1   85.9   29.1   85.9   29.1   85.6 Analysis Plot     
     20180528 124200   -5.1      N/A  20.5% 111.10    5.11  50.0 SSMI17  29.2   85.9   29.2   85.9   29.2   85.4 Analysis Plot     
     20180529 081423 -930.0      N/A   N/A     N/A    0.00  25.0  AMSR2  32.3   86.8   32.3   86.8   32.6   86.7 Analysis Plot     
     20180529 093047   -0.0      N/A   N/A     N/A    0.00  25.0 SSMI15  32.5   86.8   32.5   86.8   32.6   86.5 Analysis Plot     
     20180529 115300   -0.0      N/A   N/A     N/A    0.00  25.0 SSMI18  33.0   87.0   33.0   87.0   33.3   86.4 Analysis Plot     
     20180529 122800   -0.0      N/A   N/A     N/A    0.00  25.0 SSMI17  33.1   87.0   33.1   87.0   33.4   86.5 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.