Tropical Depression 24W

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              
     20151013 032034   -1.0      N/A   N/A   22.22    1.01  25.0    GMI  15.7 -142.2   15.7 -142.2   15.6 -141.8 Analysis Plot     
     20151013 032551 -930.0      N/A   N/A     N/A    0.00  25.0  AMSR2  15.7 -142.3   15.7 -142.3   15.4 -142.1 Analysis Plot     
     20151013 084600 -930.0      N/A   N/A     N/A    0.00  30.0 SSMI17  15.7 -139.4   15.7 -139.4   16.0 -140.1 Analysis Plot     
     20151013 093600 -930.0      N/A   N/A     N/A    0.00  30.0 SSMI18  15.7 -138.8   15.7 -138.8   16.4 -139.4 Analysis Plot     
     20151013 205900 -930.0      N/A   N/A     N/A    0.00  40.0 SSMI16  15.7 -137.5   15.7 -137.5   16.3 -137.0 Analysis Plot     
     20151013 212100   -4.1      N/A   6.8% 255.53    4.09  40.0 SSMI19  15.7 -136.9   15.7 -136.9   15.9 -137.1 Analysis Plot     
     20151013 221200   -4.4      N/A  13.7% 244.42    4.40  40.0 SSMI18  15.7 -136.7   15.7 -136.7   15.6 -137.0 Analysis Plot     
     20151014 083400 -930.0      N/A   N/A     N/A    0.00  45.0 SSMI17  15.8 -134.6   15.8 -134.6   15.5 -134.5 Analysis Plot     
     20151014 204700   -0.0      N/A   N/A     N/A    0.00  45.0 SSMI16  15.2 -132.6   15.2 -132.6   14.9 -131.8 Analysis Plot     
     20151015 223500    4.2      N/A  57.5%  55.55    4.18  70.0 SSMI19  15.5 -127.3   15.5 -127.6   15.5 -127.6 Analysis Plot     
     20151015 232900 -930.0      N/A   N/A     N/A    0.00  70.0 SSMI18  15.5 -127.2   15.8 -127.3   15.8 -127.3 Analysis Plot     
     20151016 094700    7.8      N/A  28.8%  66.66    7.83  85.0 SSMI17  15.5 -126.3   15.4 -126.4   15.4 -126.4 Analysis Plot     
     20151016 104000   11.1      N/A  23.3% 266.64   11.11  85.0 SSMI18  15.5 -126.0   15.8 -125.9   15.8 -125.9 Analysis Plot     
     20151016 222300   45.6  >65 kts 100.0%  66.66   30.60  95.0 SSMI17  15.8 -124.3   15.6 -124.5   15.6 -124.5 Analysis Plot     
     20151016 231600   50.9  >65 kts 100.0%  77.77   35.85  95.0 SSMI18  15.8 -124.2   15.6 -124.5   15.6 -124.5 Analysis Plot     
     20151017 082900   65.5  >85 kts 100.0%  77.77   50.49 115.0 SSMI16  15.7 -123.7   15.8 -123.7   15.8 -123.7 Analysis Plot     
     20151017 093500   69.4  >85 kts 100.0%  66.66   54.35 115.0 SSMI17  15.7 -123.5   15.8 -123.6   15.8 -123.6 Analysis Plot     
     20151017 102900   80.1  >85 kts 100.0%  99.99   65.10 115.0 SSMI18  15.7 -123.3   15.9 -123.5   15.9 -123.5 Analysis Plot     
     20151017 205000   29.6  >65 kts 100.0%  33.33   14.59 130.0 SSMI16  16.1 -122.0   15.8 -121.6   15.8 -121.6 Analysis Plot     
     20151017 220900    1.0      N/A  17.8%  99.99    1.01 130.0 SSMI19  16.1 -121.8   16.0 -122.1   16.0 -122.1 Analysis Plot     
     20151017 230400 -930.0      N/A   N/A     N/A    0.00 130.0 SSMI18  16.2 -121.7   17.0 -122.0   17.0 -122.0 Analysis Plot     
     20151018 081600 -930.0      N/A   N/A     N/A    0.00  85.0 SSMI16  16.2 -120.5   16.7 -121.8   16.7 -121.8 Analysis Plot     
     20151018 213200 -930.0      N/A   N/A     N/A    0.00  90.0 SSMI16  17.1 -120.1   17.4 -121.2   17.4 -121.2 Analysis Plot     
     20151018 215600 -930.0      N/A   N/A     N/A    0.00  90.0 SSMI17  17.3 -120.1   17.2 -121.2   17.2 -121.2 Analysis Plot     
     20151019 073900 -930.0      N/A   N/A     N/A    0.00  65.0 SSMI16  17.9 -120.4   17.9 -120.4   17.7 -121.3 Analysis Plot     
     20151019 104900 -930.0      N/A   N/A     N/A    0.00  65.0 SSMI19  18.0 -120.5   18.0 -120.5   17.7 -121.3 Analysis Plot     
     20151019 205000    1.7      N/A   N/A  122.21    1.72  55.0 SSMI16  18.6 -120.2   18.6 -120.2   18.2 -121.2 Analysis Plot     
     20151020 103600 -930.0      N/A   N/A     N/A    0.00  45.0 SSMI19  19.1 -120.9   19.1 -120.9   18.2 -120.8 Analysis Plot     
     20151020 113400 -930.0      N/A   N/A     N/A    0.00  45.0 SSMI18  19.1 -121.0   19.1 -121.0   18.5 -121.2 Analysis Plot     
     20151020 172135   -4.9      N/A   N/A   22.22    4.93  45.0  AMSR2  19.2 -121.4   19.2 -121.4   19.0 -121.9 Analysis Plot     
     20151020 230900 -930.0      N/A   N/A     N/A    0.00  35.0 SSMI19  19.2 -121.7   19.2 -121.7   18.0 -121.7 Analysis Plot     
     20151021 024236 -930.0      N/A   N/A     N/A    0.00  25.0    GMI  19.1 -122.3   19.1 -122.3   19.1 -122.2 Analysis Plot     
     20151021 112100 -930.0      N/A   N/A     N/A    0.00  25.0 SSMI18  19.2 -122.6   19.2 -122.6   18.4 -121.9 Analysis Plot     
     20151021 184755 -930.0      N/A   N/A     N/A    0.00  25.0 SSMI15  19.4 -122.9   19.4 -122.9   19.1 -122.7 Analysis Plot     
     20151021 205500 -930.0      N/A   N/A     N/A    0.00  25.0 SSMI16  19.4 -123.0   19.4 -123.0   19.1 -122.7 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.