Tropical Depression 04B

Passive Microwave (PMW) Intensity Information
Advanced Dvorak Technique (ADT)
Version 8.1.5


         Overpass     Inten           Ring    Ring          Wind           Forecast        Final        Target  
       Date    Time   Score  Meaning   Pct    Diam  BTdiff   Est   Sat    Lat    Lon    Lat    Lon    Lat    Lon              
     20131119 134100   -0.0      N/A   N/A     N/A    0.00  35.0 SSMI18  15.0  -84.7   15.0  -84.7   14.9  -84.5 Analysis Plot     
     20131119 211052   -9.0      N/A  27.4%  11.11    8.96  45.0   TRMM  15.1  -83.9   15.1  -83.9   14.9  -84.3 Analysis Plot     
     20131119 233300   -2.7      N/A  38.4%  33.33    2.65  45.0 SSMI16  15.2  -83.7   15.2  -83.7   15.2  -84.3 Analysis Plot     
     20131120 003800   -7.8      N/A  67.1%  44.44    7.79  50.0 SSMI17  15.1  -83.8   15.1  -83.8   15.2  -84.1 Analysis Plot     
     20131120 021600  -26.2      N/A  91.8%  44.44   11.18  50.0 SSMI18  15.1  -83.6   15.1  -83.6   15.0  -84.3 Analysis Plot     
     20131120 070038 -930.0      N/A   N/A  222.20   17.12  50.0   TRMM  15.1  -83.3   15.1  -83.3   14.7  -83.3 Analysis Plot     
     20131120 104600 -930.0      N/A   N/A   11.11   20.91  50.0 SSMI16  15.3  -83.9   15.3  -83.9   15.4  -83.9 Analysis Plot     
     20131120 115000  -22.1      N/A 100.0%  22.22    7.09  50.0 SSMI17  15.3  -83.9   15.3  -83.9   15.5  -84.0 Analysis Plot     
     20131121 002500    0.0      N/A  67.1%  22.22     .05  60.0 SSMI17  15.8  -83.6   15.8  -83.6   15.8  -83.6 Analysis Plot     
     20131121 020500   26.3  >65 kts 100.0%  22.22   11.25  60.0 SSMI18  15.8  -83.5   15.8  -83.5   15.9  -83.6 Analysis Plot     
     20131121 060545    7.3      N/A  20.5%  33.33    7.29  60.0   TRMM  15.8  -83.4   15.8  -83.4   16.0  -83.2 Analysis Plot     
     20131121 205757   -2.5      N/A   9.6% 111.10    2.50  50.0   TRMM  16.2  -82.2   16.2  -82.2   15.7  -82.1 Analysis Plot     
     20131122 001200   -2.9      N/A   N/A   22.22    2.85  45.0 SSMI17  16.2  -82.0   16.2  -82.0   15.9  -82.0 Analysis Plot     
     20131122 050945   -0.6      N/A   4.1% 222.20     .59  45.0   TRMM  16.2  -81.5   16.2  -81.5   16.2  -81.5 Analysis Plot     
     20131122 144500 -930.0      N/A   N/A  199.98     .77  35.0 SSMI18  16.2  -80.4   16.2  -80.4   16.7  -80.4 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.