Tropical Depression 03W

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              
     20170424 190109   -0.0      N/A   N/A     N/A    0.00  25.0    GMI  12.4 -136.3   12.4 -136.3   12.1 -137.1 Analysis Plot     
     20170425 051848   -6.8      N/A  11.0% 122.21    6.77  30.0 SSMI15  13.0 -136.0   13.0 -136.0   12.5 -136.2 Analysis Plot     
     20170425 092700 -930.0      N/A   N/A     N/A    0.00  30.0 SSMI17  13.1 -135.6   13.1 -135.6   13.8 -135.9 Analysis Plot     
     20170425 095600 -930.0      N/A   N/A     N/A    0.00  30.0 SSMI18  13.2 -135.5   13.2 -135.5   13.0 -135.8 Analysis Plot     
     20170425 182242   -3.4      N/A  15.1% 177.76    3.43  35.0 SSMI15  13.0 -135.1   13.0 -135.1   13.1 -135.4 Analysis Plot     
     20170425 190600   -2.0      N/A   9.6% 222.20    2.00  35.0 SSMI16  13.0 -135.1   13.0 -135.1   12.3 -135.2 Analysis Plot     
     20170425 220400   -3.5      N/A   N/A   44.44    3.55  35.0 SSMI17  13.3 -134.7   13.3 -134.7   13.4 -134.8 Analysis Plot     
     20170426 072341   -5.8      N/A   N/A   33.33    5.80  40.0    GMI  13.6 -134.3   13.6 -134.3   13.4 -134.5 Analysis Plot     
     20170426 091400   -2.1      N/A   N/A   33.33    2.11  40.0 SSMI17  13.9 -134.1   13.9 -134.1   13.6 -134.5 Analysis Plot     
     20170426 094200   -3.5      N/A   N/A   44.44    3.54  40.0 SSMI18  13.9 -134.1   13.9 -134.1   13.6 -134.4 Analysis Plot     
     20170426 185058 -930.0      N/A   N/A     N/A    0.00  40.0    GMI  14.9 -134.0   14.9 -134.0   14.8 -134.1 Analysis Plot     
     20170426 215000 -930.0      N/A   N/A     N/A    0.00  40.0 SSMI17  15.0 -134.4   15.0 -134.4   16.1 -134.7 Analysis Plot     
     20170426 222000 -930.0      N/A   N/A     N/A    0.00  40.0 SSMI18  15.1 -134.4   15.1 -134.4   14.8 -134.1 Analysis Plot     
     20170427 090100   -1.0      N/A  20.5%  33.33     .98  35.0 SSMI17  16.4 -135.1   16.4 -135.1   16.2 -135.1 Analysis Plot     
     20170427 093100   -4.5      N/A   N/A   33.33    4.52  35.0 SSMI18  16.5 -135.1   16.5 -135.1   16.5 -134.8 Analysis Plot     
     20170427 175756   -3.5      N/A   2.7%  33.33    3.50  30.0    GMI  17.6 -135.4   17.6 -135.4   17.0 -135.4 Analysis Plot     
     20170427 213500 -930.0      N/A   N/A     N/A    0.00  25.0 SSMI17  18.5 -134.9   18.5 -134.9   18.3 -135.3 Analysis Plot     
     20170427 220500 -930.0      N/A   N/A     N/A    0.00  25.0 SSMI18  18.6 -135.0   18.6 -135.0   18.4 -135.2 Analysis Plot     
     20170428 071602 -930.0      N/A   N/A     N/A    0.00  25.0    GMI  20.0 -135.5   20.0 -135.5   19.0 -136.8 Analysis Plot     
     20170428 072500 -930.0      N/A   N/A     N/A    0.00  25.0 SSMI16  19.8 -135.4   19.8 -135.4   19.1 -136.6 Analysis Plot     
     20170428 084900   -2.4      N/A  17.8%  22.22    2.35  25.0 SSMI17  20.5 -135.9   20.5 -135.9   19.2 -137.2 Analysis Plot     
     20170428 091900   -2.1      N/A  26.0%  88.88    2.12  25.0 SSMI18  20.5 -136.0   20.5 -136.0   19.9 -137.2 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.