Tropical Depression 17E

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              
     20150927 002600             N/A   N/A     N/A    0.00  30.0 SSMI17  13.5  103.0   13.5  103.0   13.1  103.4 Analysis Plot     
     20150927 002700             N/A   N/A     N/A    0.00  35.0 SSMI17  13.4  103.1   13.4  103.1   13.1  103.5 Analysis Plot     
     20150927 130400             N/A   N/A     N/A    0.00  50.0 SSMI19  14.8  102.8   14.0  102.9   14.0  102.9 Analysis Plot     
     20150927 195430             N/A   N/A     N/A    0.00  50.0  AMSR2  15.0  102.9   15.0  102.9   14.7  103.3 Analysis Plot     
     20150928 023200             N/A   N/A     N/A    0.00  55.0 SSMI18  15.3  103.0   15.3  103.0   15.9  102.3 Analysis Plot     
     20150928 080757    0.8      N/A  68.5%  77.77     .76  60.0  AMSR2  15.6  103.0   15.6  103.0   15.9  102.7 Analysis Plot     
     20150928 124800   -0.0      N/A   N/A     N/A    0.00  60.0 SSMI17  16.0  103.1   16.0  103.1   16.0  102.4 Analysis Plot     
     20150928 203829   -0.0      N/A   N/A     N/A    0.00  70.0  AMSR2  16.7  102.2   16.7  102.1   16.7  102.1 Analysis Plot     
     20150929 014300    5.8      N/A   N/A   66.66    5.78  70.0 SSMI19  16.7  102.0   16.7  102.0   16.5  102.3 Analysis Plot     
     20150929 085020   -0.0      N/A   N/A     N/A    0.00  60.0  AMSR2  16.4  101.7   16.4  101.7   16.3  101.3 Analysis Plot     
     20150929 194242   -0.0      N/A   N/A     N/A    0.00  45.0  AMSR2  16.2  101.2   16.2  101.2   16.2  101.2 Analysis Plot     
     20150930 012900   -0.0      N/A   N/A     N/A    0.00  45.0 SSMI19  16.3  101.2   16.3  101.2   15.9  101.6 Analysis Plot     
     20150930 020700   -7.6      N/A  12.3% 177.76    7.63  45.0 SSMI18  16.3  101.2   16.3  101.2   16.1  101.6 Analysis Plot     
     20150930 103541   -7.6      N/A   N/A     N/A    0.00  30.0    GMI  16.1  102.1   16.1  102.1   16.4  102.7 Analysis Plot     
     20150930 202500   -4.7      N/A   5.5% 144.43    4.71  25.0  AMSR2  16.3  102.9   16.3  102.9   16.2  102.9 Analysis Plot     
     20151001 011500   -3.7      N/A   N/A   44.44    3.68  25.0 SSMI19  16.3  103.3   16.3  103.3   16.6  103.1 Analysis Plot     
     20151001 015500   -3.5      N/A   N/A   22.22    3.53  25.0 SSMI18  16.5  103.4   16.5  103.4   16.6  103.1 Analysis Plot     
     20151001 015500   -3.4      N/A   N/A   22.22    3.45  25.0 SSMI18  16.6  103.6   16.6  103.6   16.6  103.2 Analysis Plot     
     20151001 083726   -1.5      N/A   N/A   11.11    1.51  25.0  AMSR2  16.7  104.3   16.7  104.3   16.5  104.6 Analysis Plot     
     20151001 103431   -1.5      N/A   6.8%  99.99    1.49  25.0 SSMI15  16.7  104.5   16.7  104.5   16.8  105.0 Analysis Plot     
     20151001 134900   -1.7      N/A  19.2%  88.88    1.67  25.0 SSMI17  16.7  105.0   16.7  105.0   17.5  105.6 Analysis Plot     
     20151001 143000   -2.8      N/A   8.2% 222.20    2.76  25.0 SSMI18  16.7  105.1   16.7  105.1   16.4  104.9 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.