Tropical Depression 01S

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              
     20171130 093021   -0.0      N/A   N/A     N/A    0.00  35.0 SSMI15  -9.0 -106.4   -9.0 -106.4   -9.0 -105.6 Analysis Plot     
     20171130 113200   -0.0      N/A   N/A     N/A    0.00  35.0 SSMI18  -9.2 -107.0   -9.2 -107.0   -9.0 -106.5 Analysis Plot     
     20171130 164043   -0.0      N/A   N/A     N/A    0.00  45.0    GMI  -9.7 -108.3   -9.7 -108.3   -9.1 -107.5 Analysis Plot     
     20171130 184344 -930.0      N/A   N/A     N/A    0.00  45.0  AMSR2  -9.7 -108.2   -9.1 -107.7   -9.1 -107.7 Analysis Plot     
     20171130 224000  -15.0      N/A  83.6% 111.10   14.99  45.0 SSMI18  -9.9 -108.6   -9.4 -108.7   -9.4 -108.7 Analysis Plot     
     20171201 085949   -0.0      N/A   N/A     N/A    0.00  50.0 SSMI15 -10.3 -109.6  -10.3 -109.6  -10.3 -109.6 Analysis Plot     
     20171201 110400   -5.2      N/A  32.9%  22.22    5.22  50.0 SSMI17 -10.5 -109.8  -10.5 -109.8  -10.6 -109.1 Analysis Plot     
     20171201 111900   -0.1      N/A  54.8%  66.66     .06  50.0 SSMI18 -10.5 -109.8  -10.5 -109.8  -10.7 -109.7 Analysis Plot     
     20171201 174738   -0.0      N/A   N/A     N/A    0.00  55.0  AMSR2 -10.9 -110.7  -10.9 -110.7  -10.3 -110.3 Analysis Plot     
     20171201 222800   -0.0      N/A   N/A     N/A    0.00  55.0 SSMI18 -11.2 -110.8  -11.2 -110.8  -10.3 -110.8 Analysis Plot     
     20171202 050215 -930.0      N/A   N/A     N/A    0.00  50.0    GMI -11.1 -110.8  -11.1 -110.8  -10.7 -110.9 Analysis Plot     
     20171202 105100   -1.7      N/A   N/A   11.11    1.68  45.0 SSMI17 -11.2 -110.7  -11.2 -110.7  -11.6 -111.5 Analysis Plot     
     20171202 110600   -0.7      N/A   N/A  222.20     .71  45.0 SSMI18 -11.3 -110.7  -11.3 -110.7  -11.5 -111.1 Analysis Plot     
     20171202 221600   -0.5      N/A   1.4% 188.87     .48  35.0 SSMI18 -12.5 -112.4  -12.5 -112.4  -12.2 -112.6 Analysis Plot     
     20171203 041025   -0.0      N/A   N/A     N/A    0.00  35.0    GMI -13.2 -112.3  -13.2 -112.3  -13.3 -112.8 Analysis Plot     
     20171203 083000   -0.0      N/A   N/A     N/A    0.00  35.0 SSMI16 -13.9 -112.4  -13.9 -112.4  -14.8 -112.0 Analysis Plot     
     20171203 103800 -930.0      N/A   N/A     N/A    0.00  35.0 SSMI17 -14.5 -112.3  -14.5 -112.3  -14.5 -112.5 Analysis Plot     
     20171203 153748   -0.0      N/A   N/A     N/A    0.00  35.0    GMI -15.4 -112.3  -15.4 -112.3  -16.0 -112.5 Analysis Plot     
     20171203 220600   -0.0      N/A   N/A     N/A    0.00  35.0 SSMI18 -16.3 -111.9  -16.3 -111.9  -16.7 -112.5 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.