Tropical Storm 13W

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              
     20170801 052100   -4.4      N/A   N/A  244.42    4.41  25.0 SSMI16  26.4 -163.0   26.4 -163.0   26.0 -162.8 Analysis Plot     
     20170801 184000   -3.5      N/A   8.2% 199.98    3.46  30.0 SSMI16  25.4 -164.3   25.4 -164.3   25.3 -164.5 Analysis Plot     
     20170802 021847 -930.0      N/A   N/A     N/A    0.00  30.0  AMSR2  25.8 -165.3   25.8 -165.3   25.3 -165.0 Analysis Plot     
     20170802 050900   -5.2      N/A  16.2% 277.75    5.24  30.0 SSMI16  25.8 -165.3   25.8 -165.3   25.4 -165.1 Analysis Plot     
     20170802 142623   -6.0      N/A  16.2% 233.31    6.00  35.0  AMSR2  26.8 -165.7   26.8 -165.7   26.1 -165.7 Analysis Plot     
     20170802 182700   -5.0      N/A  13.7% 299.97    5.04  35.0 SSMI16  26.9 -165.7   26.9 -165.7   26.5 -165.7 Analysis Plot     
     20170802 201300   -4.4      N/A   9.6% 233.31    4.41  35.0 SSMI17  27.3 -165.1   27.3 -165.1   27.1 -164.9 Analysis Plot     
     20170803 012753 -930.0      N/A   N/A     N/A    0.00  35.0    GMI  26.7 -164.7   26.7 -164.7   27.1 -164.5 Analysis Plot     
     20170803 073200   -6.6      N/A   5.5% 211.09    6.58  35.0 SSMI17  27.9 -164.1   27.9 -164.1   27.2 -164.1 Analysis Plot     
     20170803 074600   -0.6      N/A   N/A   22.22     .64  35.0 SSMI18  27.9 -164.0   27.9 -164.0   27.7 -163.9 Analysis Plot     
     20170803 111403   -1.6      N/A   2.7% 166.65    1.55  35.0    GMI  28.0 -163.9   28.0 -163.9   27.4 -163.7 Analysis Plot     
     20170803 170508   -3.2      N/A  17.8% 199.98    3.18  40.0 SSMI15  27.8 -163.1   27.8 -163.1   27.7 -163.3 Analysis Plot     
     20170803 181400   -1.9      N/A  23.3% 199.98    1.93  40.0 SSMI16  27.8 -163.2   27.8 -163.2   27.7 -163.4 Analysis Plot     
     20170803 195900 -930.0      N/A   N/A     N/A    0.00  40.0 SSMI17  28.3 -162.6   28.3 -162.6   27.8 -162.8 Analysis Plot     
     20170804 044100   -2.8      N/A  19.2% 199.98    2.83  40.0 SSMI16  28.7 -162.8   28.7 -162.8   28.7 -163.3 Analysis Plot     
     20170804 071900   -1.6      N/A  26.9% 266.64    1.56  40.0 SSMI17  29.2 -162.5   29.2 -162.5   29.0 -163.1 Analysis Plot     
     20170804 073200 -930.0      N/A   N/A     N/A    0.00  40.0 SSMI18  29.3 -162.5   29.3 -162.5   28.8 -163.0 Analysis Plot     
     20170804 163942 -930.0      N/A   N/A     N/A    0.00  40.0 SSMI15  30.5 -162.4   30.5 -162.4   30.5 -162.8 Analysis Plot     
     20170804 195900 -930.0      N/A   N/A     N/A    0.00  40.0 SSMI18  31.5 -162.2   31.5 -162.2   31.3 -162.8 Analysis Plot     
     20170805 011940 -930.0      N/A   N/A     N/A    0.00  35.0    GMI  32.8 -162.3   33.3 -163.0   33.3 -163.0 Analysis Plot     
     20170805 042900 -930.0      N/A   N/A     N/A    0.00  35.0 SSMI16  33.5 -162.0   33.5 -162.0   33.6 -162.9 Analysis Plot     
     20170805 070700   -1.8      N/A  20.5% 199.98    1.82  30.0 SSMI17  34.4 -162.1   34.4 -162.1   34.6 -162.2 Analysis Plot     
     20170805 072200   -3.8      N/A  19.2% 211.09    3.77  30.0 SSMI18  34.9 -161.8   34.9 -161.8   34.8 -162.3 Analysis Plot     
     20170805 162133 -930.0      N/A   N/A     N/A    0.00  25.0 SSMI15  37.2 -160.7   37.2 -160.7   37.5 -161.0 Analysis Plot     
     20170805 185700 -930.0      N/A   N/A     N/A    0.00  25.0 SSMI16  37.6 -160.4   37.6 -160.4   38.4 -160.0 Analysis Plot     
     20170805 194500   -0.7      N/A   5.5% 199.98     .73  25.0 SSMI18  38.2 -160.1   38.2 -160.1   38.8 -159.8 Analysis Plot     
     20170806 015851   -1.7      N/A   N/A  211.09    1.74  25.0  AMSR2  39.6 -159.3   39.6 -159.3   40.2 -159.2 Analysis Plot     
     20170806 100840   -0.0      N/A   N/A     N/A    0.00  25.0    GMI  41.6 -158.1   41.6 -158.1   43.0 -157.4 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.