Tropical Depression 28W

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              
     20151211 165853   -3.2      N/A  35.6%  77.77    3.16  30.0  AMSR2  10.1 -135.6    9.9 -135.8    9.9 -135.8 Analysis Plot     
     20151211 214100   -0.0      N/A   N/A     N/A    0.00  45.0 SSMI19  10.5 -134.7   10.5 -134.7    9.9 -134.7 Analysis Plot     
     20151211 215100 -930.0      N/A   N/A     N/A    0.00  45.0 SSMI18  10.5 -134.7   10.5 -134.7    9.9 -134.6 Analysis Plot     
     20151212 075100  -21.8      N/A 100.0%  22.22    6.82  50.0 SSMI16  10.9 -133.4   10.9 -133.4   10.9 -133.2 Analysis Plot     
     20151212 085900   -0.0      N/A   N/A     N/A    0.00  50.0 SSMI17  11.1 -133.0   11.1 -133.0   10.9 -132.9 Analysis Plot     
     20151212 101654  -12.3      N/A  54.8%  22.22   12.26  50.0    GMI  11.2 -132.7   10.9 -132.6   10.9 -132.6 Analysis Plot     
     20151212 104100  -29.2      N/A 100.0%  44.44   14.24  50.0 SSMI18  11.2 -132.7   11.2 -132.7   10.9 -132.5 Analysis Plot     
     20151212 212900 -930.0      N/A   N/A     N/A    0.00  55.0 SSMI19  11.6 -130.5   11.6 -130.5   11.5 -130.5 Analysis Plot     
     20151213 043056   37.8  >65 kts 100.0%  11.11   22.79  75.0  AMSR2  12.0 -129.5   12.2 -129.4   12.2 -129.4 Analysis Plot     
     20151213 101900   35.6  >65 kts 100.0%  11.11   20.60  90.0 SSMI19  12.4 -128.4   12.3 -128.4   12.3 -128.4 Analysis Plot     
     20151213 102800   38.4  >65 kts 100.0%  77.77   23.38  90.0 SSMI18  12.4 -128.3   12.3 -128.4   12.3 -128.4 Analysis Plot     
     20151213 164617   41.9  >65 kts 100.0%  33.33   26.95 115.0  AMSR2  12.6 -127.1   12.4 -127.3   12.4 -127.3 Analysis Plot     
     20151213 210500   77.1  >85 kts 100.0%  33.33   62.06 110.0 SSMI16  12.4 -126.7   12.6 -126.6   12.6 -126.6 Analysis Plot     
     20151213 230600   38.3  >65 kts 100.0%  22.22   23.32 110.0 SSMI18  12.6 -126.0   12.5 -126.0   12.5 -126.0 Analysis Plot     
     20151214 051358   -0.0      N/A   N/A     N/A    0.00 110.0  AMSR2  12.7 -125.0   12.7 -125.0   12.7 -125.0 Analysis Plot     
     20151214 080922   44.9  >65 kts 100.0%  22.22   29.95 115.0 SSMI15  12.6 -124.5   12.6 -124.6   12.6 -124.6 Analysis Plot     
     20151214 100630   17.4      N/A  87.7%  33.33    2.43 115.0    GMI  12.7 -123.8   12.9 -123.5   12.9 -123.5 Analysis Plot     
     20151214 101400   -0.0      N/A   N/A     N/A    0.00 115.0 SSMI17  12.7 -123.9   12.7 -123.8   12.7 -123.8 Analysis Plot     
     20151214 172827   44.5  >65 kts 100.0%  44.44   29.54  90.0  AMSR2  13.0 -122.4   12.9 -122.7   12.9 -122.7 Analysis Plot     
     20151214 195800   75.8  >85 kts 100.0%  55.55   60.79  90.0 SSMI16  12.9 -122.3   12.9 -122.6   12.9 -122.6 Analysis Plot     
     20151214 213419   90.2  >85 kts 100.0%  55.55   75.24  90.0    GMI  13.0 -122.0   13.0 -122.2   13.0 -122.2 Analysis Plot     
     20151214 225400   97.0  >85 kts 100.0%  44.44   82.04  90.0 SSMI18  13.1 -121.8   13.0 -122.0   13.0 -122.0 Analysis Plot     
     20151215 100100   35.1  >65 kts 100.0%  33.33   20.06 115.0 SSMI17  13.4 -120.9   13.4 -120.9   13.4 -120.9 Analysis Plot     
     20151215 192642   -0.0      N/A   N/A     N/A    0.00  85.0 SSMI15  14.1 -120.0   14.6 -120.1   14.6 -120.1 Analysis Plot     
     20151215 222800   -0.0      N/A   N/A     N/A    0.00  85.0 SSMI19  14.1 -119.8   14.0 -120.3   14.0 -120.3 Analysis Plot     
     20151215 223700    1.0      N/A  74.0%  11.11     .95  85.0 SSMI17  14.1 -119.8   14.4 -119.9   14.4 -119.9 Analysis Plot     
     20151216 050258 -930.0      N/A   N/A     N/A    0.00  75.0  AMSR2  14.4 -119.3   14.4 -119.3   14.5 -120.1 Analysis Plot     
     20151216 095656 -930.0      N/A   N/A     N/A    0.00  60.0    GMI  15.4 -119.6   15.4 -119.6   14.9 -121.1 Analysis Plot     
     20151216 171637   -1.8      N/A   N/A   22.22    1.82  50.0  AMSR2  15.6 -119.2   15.6 -119.2   15.4 -119.3 Analysis Plot     
     20151216 222400 -930.0      N/A   N/A     N/A    0.00  40.0 SSMI17  13.2 -118.9   13.2 -118.9   12.6 -119.9 Analysis Plot     
     20151217 054453 -930.0      N/A   N/A     N/A    0.00  25.0  AMSR2  12.4 -118.2   12.4 -118.2   11.6 -118.8 Analysis Plot     
     20151217 081600   -2.0      N/A   N/A   22.22    1.98  25.0 SSMI16  12.1 -118.1   12.1 -118.1   11.6 -118.1 Analysis Plot     
     20151217 112000   -0.6      N/A   N/A   66.66     .62  25.0 SSMI18  11.4 -117.6   11.4 -117.6   11.0 -118.6 Analysis Plot     
     20151217 180011   -3.6      N/A   N/A   44.44    3.64  25.0  AMSR2  10.0 -116.6   10.0 -116.6   10.1 -117.6 Analysis Plot     
     20151217 212900   -0.0      N/A   N/A     N/A    0.00  25.0 SSMI16   9.8 -116.2    9.8 -116.2    9.9 -117.5 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.