Tropical Depression 01B


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              
     20160518 102751   -0.5      N/A  43.8%  77.77     .52  40.0 SSMI15  14.1  -81.5   14.1  -81.5   14.5  -80.9 Analysis Plot     
     20160518 103300   -0.0      N/A   N/A     N/A    0.00  40.0 SSMI16  14.2  -81.5   14.2  -81.5   14.5  -81.1 Analysis Plot     
     20160518 125000   -1.6      N/A  23.5% 199.98    1.57  40.0 SSMI17  14.6  -81.5   14.6  -81.5   15.4  -81.6 Analysis Plot     
     20160518 132500   -2.1      N/A  26.6% 222.20    2.08  40.0 SSMI18  14.5  -81.4   14.5  -81.4   15.2  -81.8 Analysis Plot     
     20160518 220018   -2.8      N/A   8.2% 222.20    2.78  45.0 SSMI15  15.2  -81.8   15.2  -81.8   15.4  -82.1 Analysis Plot     
     20160519 012500   -0.2      N/A  16.4% 155.54     .23  45.0 SSMI17  15.8  -82.2   15.8  -82.2   16.1  -81.6 Analysis Plot     
     20160519 020100   -3.2      N/A   6.8% 211.09    3.21  45.0 SSMI18  15.8  -82.3   15.8  -82.3   15.5  -82.2 Analysis Plot     
     20160519 080216   -0.0      N/A   N/A     N/A    0.00  45.0  AMSR2  15.4  -82.1   15.4  -82.1   15.4  -82.1 Analysis Plot     
     20160519 123600   -4.7      N/A   5.5% 222.20    4.73  45.0 SSMI17  15.7  -82.2   15.7  -82.2   15.7  -83.1 Analysis Plot     
     20160519 131300   -2.8      N/A   8.2% 177.76    2.82  50.0 SSMI18  15.6  -83.1   15.6  -83.1   15.6  -83.3 Analysis Plot     
     20160519 150123 -930.0      N/A   N/A     N/A    0.00  50.0    GMI  15.7  -83.3   15.7  -83.3   15.9  -83.5 Analysis Plot     
     20160519 213701   -1.6      N/A  21.9%  88.88    1.55  40.0 SSMI15  16.7  -84.0   16.7  -84.0   17.4  -84.6 Analysis Plot     
     20160519 231200   -5.3      N/A  38.8% 211.09    5.26  40.0 SSMI16  16.8  -84.1   16.8  -84.1   17.1  -84.8 Analysis Plot     
     20160520 011100 -930.0      N/A   N/A     N/A    0.00  45.0 SSMI17  17.7  -84.6   17.7  -84.6   18.1  -85.3 Analysis Plot     
     20160520 070856 -930.0      N/A   N/A     N/A    0.00  50.0  AMSR2  18.5  -85.7   18.5  -85.7   18.0  -85.8 Analysis Plot     
     20160520 095700   -0.0      N/A   N/A     N/A    0.00  50.0 SSMI16  18.7  -86.1   18.7  -86.1   19.0  -85.6 Analysis Plot     
     20160520 141041 -930.0      N/A   N/A     N/A    0.00  50.0    GMI  19.1  -87.4   19.1  -87.4   18.9  -87.8 Analysis Plot     
     20160520 212850   -3.5      N/A  37.0% 111.10    3.47  50.0 SSMI15  20.3  -88.3   20.3  -88.3   20.7  -88.7 Analysis Plot     
     20160520 232300   -0.0      N/A   N/A     N/A    0.00  50.0 SSMI16  20.4  -88.5   20.4  -88.5   21.1  -88.6 Analysis Plot     
     20160521 005700   -1.5      N/A  19.2% 155.54    1.52  50.0 SSMI17  20.9  -89.5   20.9  -89.5   21.4  -89.9 Analysis Plot     
     20160521 013500   -4.7      N/A  20.5% 188.87    4.68  50.0 SSMI18  21.0  -89.6   21.0  -89.6   21.3  -90.5 Analysis Plot     
     20160521 094500    4.4      N/A  16.4% 144.43    4.38  55.0 SSMI16  22.3  -91.5   22.3  -91.5   23.3  -92.3 Analysis Plot     
     20160521 121200 -930.0      N/A   N/A     N/A    0.00  55.0 SSMI17  23.0  -92.3   23.0  -92.3   23.1  -91.9 Analysis Plot     
     20160521 124900 -930.0      N/A   N/A     N/A    0.00  45.0 SSMI18  23.4  -92.6   23.4  -92.6   23.2  -91.9 Analysis Plot     
     20160521 200127   -0.4      N/A   N/A   33.33     .40  45.0  AMSR2  24.7  -94.7   24.7  -94.7   24.9  -93.5 Analysis Plot     
     20160521 230900   -0.5      N/A   N/A  144.43     .50  45.0 SSMI16  24.9  -94.9   24.9  -94.9   25.5  -94.5 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.