Tropical Depression 15W

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              
     20150807 025837             N/A   N/A     N/A    0.00  25.0  AMSR2  21.8 -147.8   21.8 -147.8   21.9 -147.6 Analysis Plot     
     20150807 082400             N/A   N/A     N/A    0.00  25.0 SSMI17  22.9 -147.2   22.9 -147.2   23.1 -146.2 Analysis Plot     
     20150807 083200   -2.0      N/A  15.1% 199.98    1.98  25.0 SSMI19  23.2 -147.0   23.2 -147.0   23.5 -146.1 Analysis Plot     
     20150807 205400   -1.7      N/A  12.3% 244.42    1.70  30.0 SSMI17  25.6 -145.5   25.6 -145.5   25.8 -145.1 Analysis Plot     
     20150807 210300   -4.4      N/A  11.8% 255.53    4.41  30.0 SSMI19  25.7 -145.4   25.7 -145.4   25.5 -144.8 Analysis Plot     
     20150807 223000   -4.4      N/A   N/A     N/A    0.00  30.0 SSMI18  25.8 -145.2   25.8 -145.2   25.8 -144.7 Analysis Plot     
     20150808 034138   -1.4      N/A   9.6% 211.09    1.42  30.0  AMSR2  26.2 -144.2   26.2 -144.2   26.4 -143.9 Analysis Plot     
     20150808 064403   -1.4      N/A   N/A     N/A    0.00  30.0 SSMI15  26.4 -143.9   26.4 -143.9   27.6 -143.4 Analysis Plot     
     20150808 082000   -1.4      N/A   N/A     N/A    0.00  35.0 SSMI19  26.4 -143.1   26.4 -143.1   26.5 -143.0 Analysis Plot     
     20150808 094700   -6.3      N/A   5.5% 244.42    6.25  35.0 SSMI18  26.5 -142.9   26.5 -142.9   26.3 -142.9 Analysis Plot     
     20150808 180227   -0.0      N/A   N/A     N/A    0.00  35.0 SSMI15  27.0 -141.5   27.0 -141.5   26.9 -141.2 Analysis Plot     
     20150808 204100   -0.0      N/A   N/A     N/A    0.00  35.0 SSMI17  27.3 -141.3   27.3 -141.3   27.4 -140.7 Analysis Plot     
     20150808 221600   -0.0      N/A   N/A     N/A    0.00  35.0 SSMI18  27.4 -141.2   27.4 -141.2   27.0 -140.1 Analysis Plot     
     20150809 062754  -11.3      N/A  16.2% 255.53   11.31  35.0 SSMI15  27.6 -140.6   27.6 -140.6   27.4 -140.6 Analysis Plot     
     20150809 085707  -11.3      N/A   N/A     N/A    0.00  35.0    GMI  28.1 -140.7   28.1 -140.7   28.1 -140.8 Analysis Plot     
     20150809 093500  -11.3      N/A   N/A     N/A    0.00  35.0 SSMI18  28.1 -140.7   28.1 -140.7   28.1 -140.8 Analysis Plot     
     20150809 172933   -3.2      N/A   N/A   88.88    3.15  35.0 SSMI15  28.8 -140.6   28.8 -140.6   29.0 -140.7 Analysis Plot     
     20150809 220400   -2.6      N/A  15.1% 177.76    2.59  35.0 SSMI18  29.1 -140.6   29.1 -140.6   29.3 -140.5 Analysis Plot     
     20150811 073500   -2.6      N/A   N/A     N/A    0.00  45.0 SSMI17  32.3 -144.0   32.3 -144.0   31.7 -144.5 Analysis Plot     
     20150811 171651   -2.6      N/A   N/A     N/A    0.00  45.0 SSMI15  32.8 -145.6   32.8 -145.6   32.7 -145.1 Analysis Plot     
     20150811 214900   -2.6      N/A   N/A     N/A    0.00  45.0 SSMI19  33.3 -146.4   33.3 -146.4   33.1 -146.7 Analysis Plot     
     20150812 031900   -3.5      N/A   9.6% 244.42    3.54  45.0  AMSR2  33.9 -147.6   33.9 -147.6   33.6 -147.3 Analysis Plot     
     20150812 054137   -3.5      N/A   N/A     N/A    0.00  45.0 SSMI15  34.0 -147.9   34.0 -147.9   33.5 -147.4 Analysis Plot     
     20150812 072200   -3.5      N/A   N/A     N/A    0.00  45.0 SSMI17  34.2 -148.6   34.2 -148.6   33.9 -148.3 Analysis Plot     
     20150812 090000   -7.6      N/A   1.4%  77.77    7.56  45.0 SSMI18  34.3 -149.0   34.3 -149.0   34.2 -149.7 Analysis Plot     
     20150812 152236   -0.0      N/A   N/A     N/A    0.00  40.0  AMSR2  34.2 -151.2   34.2 -151.2   34.1 -152.1 Analysis Plot     
     20150812 212500   -0.0      N/A   N/A     N/A    0.00  35.0 SSMI18  34.6 -153.1   34.6 -153.1   33.8 -151.9 Analysis Plot     
     20150813 022438   -3.3      N/A  12.3% 144.43    3.32  50.0  AMSR2  35.5 -154.5   35.5 -154.5   35.1 -154.5 Analysis Plot     
     20150813 054033   -3.3      N/A   N/A     N/A    0.00  50.0 SSMI15  35.7 -155.1   35.7 -155.1   36.2 -154.8 Analysis Plot     
     20150813 071600   -3.3      N/A   N/A     N/A    0.00  45.0 SSMI19  35.9 -155.4   35.9 -155.4   35.9 -155.7 Analysis Plot     
     20150813 084800   -1.1      N/A   N/A   33.33    1.10  45.0 SSMI18  36.1 -156.0   36.1 -156.0   35.8 -155.9 Analysis Plot     
     20150813 164054   -1.1      N/A   N/A     N/A    0.00  40.0 SSMI15  36.9 -159.0   36.9 -159.0   36.3 -159.4 Analysis Plot     
     20150813 211100   -2.0      N/A   N/A  277.75    2.00  40.0 SSMI18  37.6 -161.0   37.6 -161.0   37.5 -160.6 Analysis Plot     
     20150814 053109   -2.0      N/A   N/A     N/A    0.00  40.0 SSMI15  38.4 -163.4   38.4 -163.4   38.3 -164.1 Analysis Plot     
     20150814 070300   -2.0      N/A   N/A     N/A    0.00  40.0 SSMI19  38.9 -165.0   38.9 -165.0   38.5 -166.3 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.