Tropical Depression 15W

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              
     20160831 174528 -930.0      N/A   N/A     N/A    0.00  25.0  AMSR2  23.1 -126.5   23.1 -126.5   23.2 -127.3 Analysis Plot     
     20160831 210500   -0.0      N/A   N/A     N/A    0.00  25.0 SSMI16  23.3 -126.7   23.3 -126.7   23.6 -127.3 Analysis Plot     
     20160831 221900   -1.9      N/A  34.2%  99.99    1.85  25.0 SSMI17  23.7 -127.3   23.7 -127.3   23.8 -128.0 Analysis Plot     
     20160831 224500   -3.1      N/A  35.6% 111.10    3.12  25.0 SSMI18  23.8 -127.3   23.8 -127.3   23.9 -128.0 Analysis Plot     
     20160901 052328   -0.0      N/A   N/A     N/A    0.00  30.0    GMI  24.5 -128.6   24.5 -128.6   24.3 -128.9 Analysis Plot     
     20160901 100100  -21.4      N/A 100.0%  22.22    6.44  50.0 SSMI18  24.9 -129.8   24.9 -129.8   24.7 -129.9 Analysis Plot     
     20160901 164853   66.4  >85 kts 100.0%  33.33   51.42  65.0  AMSR2  25.5 -130.7   25.6 -130.5   25.6 -130.5 Analysis Plot     
     20160901 185247   45.1  >65 kts 100.0%  33.33   30.10  65.0 SSMI15  25.9 -130.6   25.9 -130.6   25.9 -130.7 Analysis Plot     
     20160901 200000   35.1  >65 kts 100.0%  22.22   20.14  65.0 SSMI16  25.9 -130.6   25.9 -130.6   25.9 -130.8 Analysis Plot     
     20160901 220600   -0.0      N/A   N/A     N/A    0.00  65.0 SSMI17  26.2 -130.7   26.2 -130.7   26.2 -130.9 Analysis Plot     
     20160901 223100   17.9      N/A 100.0%  11.11    2.92  65.0 SSMI18  26.3 -130.8   26.3 -130.8   26.3 -130.8 Analysis Plot     
     20160902 071802   -0.0      N/A   N/A     N/A    0.00  70.0 SSMI15  26.9 -130.8   26.9 -130.8   27.1 -130.9 Analysis Plot     
     20160902 085400   21.5  >65 kts  91.8%  77.77    6.53 100.0 SSMI16  27.3 -130.8   27.2 -130.9   27.2 -130.9 Analysis Plot     
     20160902 092400    5.2      N/A  60.3%  11.11    5.25 100.0 SSMI17  27.6 -130.8   27.4 -130.9   27.4 -130.9 Analysis Plot     
     20160902 095000   14.1      N/A  74.0%  33.33   14.11 100.0 SSMI18  27.7 -130.8   27.3 -131.0   27.3 -131.0 Analysis Plot     
     20160902 182920   51.5  >65 kts 100.0%  33.33   36.49 100.0 SSMI15  28.5 -130.7   28.6 -130.6   28.6 -130.6 Analysis Plot     
     20160902 203100   59.2  >65 kts 100.0%  44.44   44.19 100.0 SSMI16  28.6 -130.6   28.8 -130.5   28.8 -130.5 Analysis Plot     
     20160902 221800   71.2  >85 kts 100.0%  44.44   56.25 100.0 SSMI18  29.0 -130.6   29.1 -130.4   29.1 -130.4 Analysis Plot     
     20160903 042946    0.4      N/A  32.9%  22.22     .44  90.0  AMSR2  29.7 -130.2   29.7 -130.3   29.7 -130.3 Analysis Plot     
     20160903 051444    2.9      N/A   5.5%  44.44    2.94  90.0    GMI  29.9 -130.1   29.8 -130.1   29.8 -130.1 Analysis Plot     
     20160903 071600    1.1      N/A  13.7%  55.55    1.06  80.0 SSMI16  30.0 -130.1   30.0 -130.1   29.9 -130.2 Analysis Plot     
     20160903 091100    0.1      N/A  42.5%  44.44     .06  80.0 SSMI17  30.3 -130.0   30.3 -130.0   30.3 -130.2 Analysis Plot     
     20160903 093800    7.0      N/A  16.4% 133.32    7.04  80.0 SSMI18  30.3 -130.0   30.3 -130.0   29.8 -130.2 Analysis Plot     
     20160903 145859   38.3  >65 kts 100.0%  22.22   23.31  80.0    GMI  30.7 -129.9   30.7 -129.9   30.9 -129.7 Analysis Plot     
     20160903 180616 -930.0      N/A   N/A     N/A    0.00  70.0 SSMI15  31.3 -129.8   31.3 -129.8   31.0 -130.8 Analysis Plot     
     20160903 200400 -930.0      N/A   N/A     N/A    0.00  70.0 SSMI16  31.3 -129.8   31.3 -129.8   31.7 -129.8 Analysis Plot     
     20160903 213800    6.6      N/A  17.8%  66.66    6.57  70.0 SSMI17  31.5 -129.8   31.5 -129.8   31.3 -129.8 Analysis Plot     
     20160903 220600    6.6      N/A   N/A   22.22    6.64  70.0 SSMI18  31.6 -129.7   31.6 -129.7   31.3 -129.8 Analysis Plot     
     20160904 092700    0.5      N/A   N/A   22.22     .54  55.0 SSMI18  32.4 -129.7   32.4 -129.7   32.3 -130.2 Analysis Plot     
     20160905 050646 -930.0      N/A   N/A     N/A    0.00  25.0    GMI  35.0 -131.4   35.0 -131.4   35.5 -131.4 Analysis Plot     
     20160905 081400   -1.5      N/A   N/A  233.31    1.46  25.0 SSMI16  35.3 -131.6   35.3 -131.6   34.9 -132.1 Analysis Plot     
     20160905 084600   -0.0      N/A   N/A     N/A    0.00  25.0 SSMI17  36.0 -132.2   36.0 -132.2   35.3 -132.7 Analysis Plot     
     20160905 091600   -0.0      N/A   N/A     N/A    0.00  25.0 SSMI18  36.1 -132.3   36.1 -132.3   35.6 -132.7 Analysis Plot     
     20160905 211000 -930.0      N/A   N/A     N/A    0.00  25.0 SSMI17  39.2 -135.2   39.2 -135.2   39.7 -134.9 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.