Tropical Depression 12W

Passive Microwave (PMW) Intensity Information
Advanced Dvorak Technique (ADT)
Version 8.1.5


         Overpass     Inten           Ring    Ring          Wind           Forecast        Final        Target  
       Date    Time   Score  Meaning   Pct    Diam  BTdiff   Est   Sat    Lat    Lon    Lat    Lon    Lat    Lon              
     20130817 032324   -0.0      N/A   5.5%  66.66     .04  25.0   TRMM  21.2 -124.8   21.2 -124.8   21.2 -125.0 Analysis Plot     
     20130817 084600   -2.9      N/A  21.9% 144.43    2.92  30.0 SSMI17  20.5 -125.5   20.5 -125.5   20.8 -125.6 Analysis Plot     
     20130817 105500   -1.8      N/A  11.0% 111.10    1.76  30.0 SSMI18  20.5 -125.8   20.5 -125.8   20.8 -125.7 Analysis Plot     
     20130817 211800   -7.1      N/A   9.6% 199.98    7.12  30.0 SSMI17  20.2 -127.0   20.2 -127.0   20.7 -127.0 Analysis Plot     
     20130817 232700   -5.6      N/A   4.1% 211.09    5.56  30.0 SSMI18  20.2 -127.2   20.2 -127.2   20.4 -127.3 Analysis Plot     
     20130818 022619   -5.1      N/A  16.4% 166.65    5.14  30.0   TRMM  20.3 -127.5   20.3 -127.5   20.8 -127.2 Analysis Plot     
     20130818 084449   -6.0      N/A  21.9%  55.55    5.98  30.0 SSMI15  20.3 -127.9   20.3 -127.9   20.0 -127.2 Analysis Plot     
     20130818 104200 -930.0      N/A   N/A     N/A    5.16  35.0 SSMI18  20.5 -128.1   20.5 -128.1   20.3 -128.3 Analysis Plot     
     20130818 185748 -930.0      N/A   N/A     N/A    4.05  40.0   TRMM  19.8 -127.5   19.8 -127.5   20.1 -128.0 Analysis Plot     
     20130818 200338   -0.0      N/A   N/A     N/A    0.00  40.0 SSMI15  19.9 -127.5   19.9 -127.5   19.4 -127.3 Analysis Plot     
     20130818 210600  -31.8      N/A  90.4%  55.55   16.77  40.0 SSMI17  19.9 -127.5   19.9 -127.5   19.4 -127.6 Analysis Plot     
     20130818 231600  -10.0      N/A  74.0%  99.99   10.03  40.0 SSMI18  20.0 -127.4   20.0 -127.4   19.1 -127.7 Analysis Plot     
     20130819 013130 -930.0      N/A   N/A     N/A    6.91  45.0   TRMM  19.5 -127.7   19.5 -127.7   19.8 -128.3 Analysis Plot     
     20130819 075010  -11.3      N/A  46.6%  99.99   11.33  45.0 SSMI15  19.9 -127.9   19.9 -127.9   19.8 -128.0 Analysis Plot     
     20130819 084800 -930.0      N/A   N/A     N/A    5.72  50.0 SSMI16  20.1 -128.1   20.1 -128.1   20.4 -128.1 Analysis Plot     
     20130819 193009    0.4      N/A  11.0% 133.32     .40  55.0 SSMI15  20.7 -129.0   20.7 -129.0   21.1 -128.1 Analysis Plot     
     20130820 083600    0.2      N/A   9.6% 144.43     .18  55.0 SSMI16  23.4 -127.2   23.4 -127.2   23.0 -126.8 Analysis Plot     
     20130820 184412   11.3      N/A  37.0% 166.65   11.26  60.0   TRMM  24.5 -125.8   24.7 -125.9   24.7 -125.9 Analysis Plot     
     20130820 210700    3.7      N/A  31.5% 144.43    3.68  60.0 SSMI16  24.7 -125.1   24.7 -125.1   24.8 -124.9 Analysis Plot     
     20130820 221900    5.5      N/A  60.3%  88.88    5.51  60.0 SSMI17  24.8 -124.8   24.8 -124.8   24.9 -124.8 Analysis Plot     
     20130821 003000   37.9  >65 kts 100.0%  77.77   22.91  65.0 SSMI18  25.3 -124.2   25.3 -124.4   25.3 -124.4 Analysis Plot     
     20130821 011615 -930.0      N/A   N/A     N/A   14.85  65.0   TRMM  25.2 -124.2   25.4 -123.8   25.4 -123.8 Analysis Plot     
     20130821 082500   12.3      N/A  69.9%  55.55   12.31  65.0 SSMI16  25.8 -122.4   25.7 -122.2   25.7 -122.2 Analysis Plot     
     20130821 174729   -0.0      N/A   N/A     N/A    0.00  70.0   TRMM  26.1 -119.9   25.9 -119.6   25.9 -119.6 Analysis Plot     
     20130821 220600 -930.0      N/A   N/A     N/A    6.51  75.0 SSMI17  25.9 -118.6   25.9 -118.6   26.7 -118.3 Analysis Plot     
     20130822 001832   -0.0      N/A   N/A     N/A    0.00  75.0   TRMM  25.9 -118.3   25.9 -118.3   26.1 -118.0 Analysis Plot     
     20130822 092400   -0.0      N/A   N/A     N/A    0.00  75.0 SSMI17  26.3 -116.2   26.3 -116.2   27.0 -116.4 Analysis Plot     
     20130822 113600 -930.0      N/A   N/A     N/A    6.91  75.0 SSMI18  26.3 -115.7   26.3 -115.7   27.5 -116.1 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.