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              
     20140907 000200 -930.0      N/A   N/A  255.53  1278.1  25.0 SSMI18  27.7 -129.8   27.7 -129.8   27.9 -129.5 Analysis Plot     
     20140907 091700  -14.9      N/A  43.8%  77.77   14.93  35.0 SSMI17  28.2 -131.6   28.2 -131.6   27.8 -132.1 Analysis Plot     
     20140907 155040  -15.3      N/A  47.9% 122.21   15.32  45.0   TRMM  28.3 -133.6   28.3 -133.6   28.4 -133.6 Analysis Plot     
     20140907 204414  -10.4      N/A  37.0% 111.10   10.42  45.0   TRMM  29.0 -134.8   28.7 -134.8   28.7 -134.8 Analysis Plot     
     20140907 214500   -8.6      N/A  54.8% 155.54    8.58  45.0 SSMI17  29.2 -135.2   28.9 -135.3   28.9 -135.3 Analysis Plot     
     20140908 064400   10.5      N/A  57.5% 122.21   10.53  55.0 SSMI16  30.2 -137.6   30.1 -137.9   30.1 -137.9 Analysis Plot     
     20140908 090500 -930.0      N/A   N/A  322.19  1276.9  55.0 SSMI17  30.3 -137.9   30.3 -137.9   30.6 -138.2 Analysis Plot     
     20140908 163243   13.5      N/A   N/A  111.10   13.54  55.0   TRMM  31.6 -141.0   31.5 -140.4   31.5 -140.4 Analysis Plot     
     20140908 181048 -930.0      N/A   N/A   77.77  1282.3  55.0   TRMM  31.9 -141.5   31.7 -141.3   31.7 -141.3 Analysis Plot     
     20140908 191100   17.9      N/A  28.8% 177.76   17.89  60.0 SSMI16  31.7 -141.2   31.9 -141.4   31.9 -141.4 Analysis Plot     
     20140908 194801   24.1  >65 kts  27.4% 199.98   24.12  60.0   TRMM  31.7 -141.3   31.9 -141.3   31.9 -141.3 Analysis Plot     
     20140908 213100 -930.0      N/A   N/A  222.20  1279.3  60.0 SSMI17  32.0 -141.9   32.1 -141.8   32.1 -141.8 Analysis Plot     
     20140909 063100    3.6      N/A  12.3% 188.87    3.62  55.0 SSMI16  33.1 -145.6   33.1 -145.6   33.0 -145.8 Analysis Plot     
     20140909 091500 -930.0      N/A   N/A  322.19  1279.2  55.0 SSMI18  33.3 -146.0   33.3 -146.0   33.3 -146.7 Analysis Plot     
     20140909 153708   -9.6      N/A   N/A  211.09    9.59  50.0   TRMM  34.3 -148.4   34.3 -148.4   34.5 -149.3 Analysis Plot     
     20140909 171448   -4.7      N/A   5.5% 144.43    4.74  50.0   TRMM  34.6 -149.1   34.6 -149.1   34.9 -150.4 Analysis Plot     
     20140909 185255 -930.0      N/A   N/A  255.53  1284.2  50.0   TRMM  34.8 -149.8   34.8 -149.8   35.0 -150.0 Analysis Plot     
     20140909 185600 -930.0      N/A   N/A  333.30  1276.8  50.0 SSMI16  35.0 -150.3   35.0 -150.3   35.5 -151.4 Analysis Plot     
     20140909 214000   -0.0      N/A   N/A     N/A    0.00  50.0 SSMI18  35.4 -151.4   35.4 -151.4   35.8 -151.4 Analysis Plot     
     20140910 061900   -3.8      N/A   N/A  155.54    3.80  50.0 SSMI16  36.9 -155.8   36.9 -155.8   37.1 -156.4 Analysis Plot     
     20140910 065800 -930.0      N/A   N/A  322.19  1280.0  50.0 SSMI17  37.0 -156.1   37.0 -156.1   36.8 -157.6 Analysis Plot     
     20140910 090400 -930.0      N/A   N/A  255.53  1277.1  50.0 SSMI18  37.3 -157.1   37.3 -157.1   37.9 -158.0 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.