Tropical Depression 15S

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              
     20180315 194100   -0.0      N/A   N/A     N/A    0.00  35.0 SSMI16 -10.0 -132.1   -9.7 -132.1   -9.7 -132.1 Analysis Plot     
     20180316 051528   -1.1      N/A  33.3%  88.88    1.05  40.0  AMSR2 -10.9 -132.5  -10.9 -132.5  -10.9 -132.2 Analysis Plot     
     20180316 075600   -0.0      N/A   N/A     N/A    0.00  40.0 SSMI16 -11.1 -131.9  -11.1 -131.9  -10.8 -132.0 Analysis Plot     
     20180316 190800   -0.0      N/A   N/A     N/A    0.00  40.0 SSMI16 -11.8 -130.9  -11.4 -131.6  -11.4 -131.6 Analysis Plot     
     20180316 204914  -56.0      N/A 100.0%  55.55   41.04  40.0    GMI -11.9 -131.3  -11.8 -131.6  -11.8 -131.6 Analysis Plot     
     20180316 205000  -49.5      N/A 100.0%  44.44   34.51  40.0 SSMI18 -11.9 -131.3  -11.9 -131.6  -11.9 -131.6 Analysis Plot     
     20180317 081739  -27.3      N/A 100.0%  33.33   12.32  45.0    GMI -13.2 -129.8  -13.2 -129.2  -13.2 -129.2 Analysis Plot     
     20180318 091600 -930.0      N/A   N/A     N/A    0.00  50.0 SSMI18 -14.7 -126.3  -14.7 -126.3  -14.4 -126.0 Analysis Plot     
     20180318 091600 -930.0      N/A   N/A     N/A    0.00  50.0 SSMI18 -14.7 -126.0  -14.7 -126.0  -14.5 -126.0 Analysis Plot     
     20180318 173141  -18.1      N/A  68.5%  44.44   18.10  45.0  AMSR2 -15.2 -124.3  -14.8 -124.1  -14.8 -124.1 Analysis Plot     
     20180318 204018  -20.4      N/A  38.4%  44.44   20.38  50.0    GMI -15.2 -123.7  -14.9 -123.9  -14.9 -123.9 Analysis Plot     
     20180319 054423   58.1  >65 kts 100.0%  55.55   43.11  65.0  AMSR2 -15.0 -122.4  -15.3 -122.7  -15.3 -122.7 Analysis Plot     
     20180319 080659   26.6  >65 kts  57.5%  44.44   26.57  75.0    GMI -15.5 -122.2  -15.6 -122.1  -15.6 -122.1 Analysis Plot     
     20180319 103700   62.9  >85 kts 100.0%  44.44   47.94  75.0 SSMI17 -15.5 -121.8  -15.6 -121.5  -15.6 -121.5 Analysis Plot     
     20180319 203500   38.8  >65 kts 100.0%  22.22   23.76 100.0 SSMI16 -15.3 -119.6  -15.0 -119.6  -15.0 -119.6 Analysis Plot     
     20180321 075620   84.7  >85 kts 100.0%  44.44   69.71 125.0    GMI -14.9 -110.5  -14.9 -110.4  -14.9 -110.4 Analysis Plot     
     20180321 084200 -930.0      N/A   N/A     N/A    0.00 125.0 SSMI16 -14.9 -110.7  -14.9 -110.7  -14.7 -110.6 Analysis Plot     
     20180321 180201   71.2  >85 kts 100.0%  33.33   56.22 140.0  AMSR2 -15.5 -108.3  -15.3 -108.4  -15.3 -108.4 Analysis Plot     
     20180321 211232   29.6  >65 kts  67.1%  33.33   29.64 140.0    GMI -15.8 -108.0  -15.5 -107.9  -15.5 -107.9 Analysis Plot     
     20180321 215900   48.1  >65 kts 100.0%  33.33   33.11 140.0 SSMI16 -15.7 -108.1  -15.5 -107.9  -15.5 -107.9 Analysis Plot     
     20180322 061517   54.7  >65 kts 100.0%  33.33   39.67 140.0  AMSR2 -16.7 -106.8  -16.6 -106.7  -16.6 -106.7 Analysis Plot     
     20180322 184719 -930.0      N/A   N/A     N/A    0.00 120.0  AMSR2 -19.0 -106.0  -19.0 -106.0  -18.9 -106.0 Analysis Plot     
     20180322 205900   19.0      N/A  69.9% 155.54   19.01 120.0 SSMI16 -19.2 -106.0  -19.1 -105.9  -19.1 -105.9 Analysis Plot     
     20180323 074517    4.7      N/A  32.9% 144.43    4.65 105.0    GMI -21.6 -106.1  -21.7 -106.2  -21.7 -106.2 Analysis Plot     
     20180323 175216   22.1  >65 kts 100.0%  11.11    7.09  60.0  AMSR2 -23.7 -106.6  -23.7 -106.6  -24.3 -107.3 Analysis Plot     
     20180323 210525    3.9      N/A   N/A  222.20    3.92  60.0    GMI -24.3 -106.8  -24.3 -106.8  -24.4 -106.8 Analysis Plot     
     20180323 213200    1.0      N/A   N/A  222.20    1.02  60.0 SSMI16 -24.0 -106.7  -24.0 -106.7  -24.1 -106.8 Analysis Plot     
     20180324 065154 -930.0      N/A   N/A     N/A    0.00  55.0    GMI -26.6 -107.7  -26.6 -107.7  -26.9 -107.4 Analysis Plot     
     20180324 094400   -4.7      N/A   N/A  222.20    4.66  35.0 SSMI16 -27.2 -107.7  -27.2 -107.7  -27.1 -107.4 Analysis Plot     
     20180324 111900   -1.2      N/A   N/A   77.77    1.22  35.0 SSMI18 -27.7 -107.8  -27.7 -107.8  -27.5 -107.8 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.