Tropical Depression 18E

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              
     20151009 152800   -0.0      N/A   N/A     N/A    0.00  30.0 SSMI17  11.1  132.1   11.1  132.1   11.0  131.2 Analysis Plot     
     20151009 161500   -1.0      N/A   N/A   22.22     .97  30.0 SSMI18  11.1  132.3   11.1  132.3   11.0  131.4 Analysis Plot     
     20151009 221212  -10.0      N/A  26.0%  44.44   10.03  30.0    GMI  10.9  133.8   10.9  133.8   11.2  134.1 Analysis Plot     
     20151010 023800 -930.0      N/A   N/A     N/A    0.00  35.0 SSMI17  11.3  134.9   11.3  134.9   11.3  134.3 Analysis Plot     
     20151010 151400   -4.8      N/A   9.6%  66.66    4.82  40.0 SSMI17  11.7  137.4   11.7  137.4   12.3  137.5 Analysis Plot     
     20151010 223917   -4.0      N/A  42.5%  11.11    4.03  45.0  AMSR2  11.8  138.7   11.8  138.7   11.8  139.3 Analysis Plot     
     20151011 012031   -2.3      N/A  31.5%  22.22    2.34  45.0 SSMI15  11.9  138.9   11.9  138.9   11.6  139.6 Analysis Plot     
     20151011 040500   -7.5      N/A  80.8%  33.33    7.49  45.0 SSMI19  11.7  140.2   11.7  140.2   11.8  140.6 Analysis Plot     
     20151011 105427  -59.4      N/A 100.0%  33.33   44.40  50.0  AMSR2  11.9  141.5   11.9  141.5   12.3  141.6 Analysis Plot     
     20151011 124151  -17.7      N/A  79.5%  33.33   17.74  50.0 SSMI15  12.0  141.8   12.0  141.8   12.5  141.9 Analysis Plot     
     20151011 161700   -0.0      N/A   N/A     N/A    0.00  55.0 SSMI16  12.1  142.1   12.1  142.1   12.1  142.1 Analysis Plot     
     20151011 164300 -930.0      N/A   N/A     N/A    0.00  55.0 SSMI19  12.3  142.7   12.3  142.7   12.7  142.4 Analysis Plot     
     20151011 173300   -0.0      N/A   N/A     N/A    0.00  55.0 SSMI18  12.3  142.8   12.3  142.8   12.7  141.9 Analysis Plot     
     20151011 232334   -0.0      N/A   N/A     N/A    0.00  60.0  AMSR2  13.0  143.5   13.0  143.5   13.1  143.9 Analysis Plot     
     20151012 035200   -0.0      N/A   N/A     N/A    0.00  60.0 SSMI19  13.5  143.8   13.5  143.8   13.3  143.9 Analysis Plot     
     20151012 124432    3.4      N/A   N/A  177.76    3.42  55.0 SSMI15  12.6  145.3   12.6  145.3   12.4  145.2 Analysis Plot     
     20151012 163000    5.9      N/A   N/A   44.44    5.94  55.0 SSMI17  12.8  145.9   12.8  145.9   12.8  146.2 Analysis Plot     
     20151012 171900    4.8      N/A   N/A   66.66    4.79  55.0 SSMI18  12.8  145.9   12.8  145.9   12.9  146.1 Analysis Plot     
     20151013 033900   -6.7      N/A   N/A  222.20    6.74  45.0 SSMI17  13.1  147.7   13.1  147.7   13.4  147.6 Analysis Plot     
     20151013 043100 -930.0      N/A   N/A     N/A    0.00  45.0 SSMI18  13.1  147.8   13.1  147.8   13.3  147.8 Analysis Plot     
     20151013 043100 -930.0      N/A   N/A     N/A    0.00  45.0 SSMI18  13.2  148.0   13.2  148.0   13.3  147.9 Analysis Plot     
     20151013 161500   -3.5      N/A  12.3% 144.43    3.48  40.0 SSMI17  14.3  148.7   14.3  148.7   14.1  148.8 Analysis Plot     
     20151013 170600   -5.4      N/A  11.0% 144.43    5.35  40.0 SSMI18  14.4  148.8   14.4  148.8   14.2  149.0 Analysis Plot     
     20151014 020500   -1.7      N/A   N/A   55.55    1.74  40.0 SSMI16  14.7  149.6   14.7  149.6   14.1  149.7 Analysis Plot     
     20151014 154900   -2.9      N/A  15.1%  55.55    2.95  30.0 SSMI16  14.9  151.1   14.9  151.1   15.0  150.2 Analysis Plot     
     20151014 160300   -3.5      N/A  15.1% 144.43    3.51  30.0 SSMI17  14.9  151.2   14.9  151.2   15.6  150.8 Analysis Plot     
     20151015 045400   -7.1      N/A   5.5%  88.88    7.12  25.0 SSMI19  15.6  151.5   15.6  151.5   16.2  151.6 Analysis Plot     
     20151015 145900   -0.0      N/A   N/A     N/A    0.00  25.0 SSMI16  16.5  152.4   16.5  152.4   16.6  152.0 Analysis Plot     
     20151016 044300   -4.1      N/A   N/A   22.22    4.15  25.0 SSMI17  17.1  153.0   17.1  153.0   17.3  152.7 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.