Tropical Depression 11W

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              
     20160817 235900 -930.0      N/A   N/A     N/A    0.00  25.0 SSMI18  20.8 -111.9   20.8 -111.9   21.8 -111.3 Analysis Plot     
     20160818 060710   -0.0      N/A   N/A     N/A    0.00  25.0  AMSR2  20.8 -111.2   20.8 -111.2   20.8 -111.2 Analysis Plot     
     20160818 084600 -930.0      N/A   N/A     N/A    0.00  25.0 SSMI16  20.9 -111.1   20.9 -111.1   20.6 -111.3 Analysis Plot     
     20160818 110000 -930.0      N/A   N/A     N/A    0.00  25.0 SSMI17  20.9 -110.7   20.9 -110.7   21.5 -110.5 Analysis Plot     
     20160818 181728   -3.6      N/A  38.4% 266.64    3.58  30.0  AMSR2  20.5 -108.8   20.5 -108.8   20.6 -108.6 Analysis Plot     
     20160818 234700   -0.0      N/A   N/A     N/A    0.00  30.0 SSMI18  20.5 -107.9   20.5 -107.9   20.5 -107.5 Analysis Plot     
     20160819 083500   -9.8      N/A  15.1%  44.44    9.83  40.0 SSMI16  20.8 -106.3   20.8 -106.3   21.3 -106.0 Analysis Plot     
     20160819 094652   -3.9      N/A   8.2%  66.66    3.89  40.0 SSMI15  20.8 -106.2   20.8 -106.2   20.7 -105.6 Analysis Plot     
     20160819 104700   -2.3      N/A  47.9%  22.22    2.35  40.0 SSMI17  20.9 -105.6   20.9 -105.6   21.4 -105.4 Analysis Plot     
     20160819 190017 -930.0      N/A   N/A     N/A    0.00  40.0  AMSR2  21.1 -103.4   21.1 -103.4   20.3 -102.8 Analysis Plot     
     20160819 204427 -930.0      N/A   N/A     N/A    0.00  40.0 SSMI15  21.2 -103.2   21.2 -103.2   20.2 -102.8 Analysis Plot     
     20160819 214212   -1.7      N/A  16.4% 211.09    1.70  40.0    GMI  21.2 -102.9   21.2 -102.9   20.9 -102.6 Analysis Plot     
     20160819 220200 -930.0      N/A   N/A     N/A    0.00  40.0 SSMI16  21.2 -103.3   21.2 -103.3   20.8 -102.8 Analysis Plot     
     20160819 232000 -930.0      N/A   N/A     N/A    0.00  40.0 SSMI17  21.3 -102.4   21.3 -102.4   20.8 -102.7 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.