Tropical Depression 09E

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              
     20130822 132500   -4.7      N/A  16.4% 166.65    4.69  30.0 SSMI17  17.3  111.6   17.3  111.6   17.3  111.7 Analysis Plot     
     20130822 225119   -3.8      N/A   N/A   11.11    3.77  30.0 SSMI15  17.9  112.1   17.9  112.1   17.3  111.8 Analysis Plot     
     20130823 003900   -2.1      N/A   9.6% 144.43    2.07  30.0 SSMI17  17.9  112.1   17.9  112.1   17.3  111.8 Analysis Plot     
     20130823 025200 -930.0      N/A   N/A  155.54    3.97  30.0 SSMI18  17.8  112.6   17.8  112.6   17.5  111.9 Analysis Plot     
     20130823 025200 -930.0      N/A   N/A  222.20    5.26  30.0 SSMI18  18.0  112.7   18.0  112.7   17.8  112.0 Analysis Plot     
     20130823 081512   -3.2      N/A   N/A  188.87    3.20  30.0   TRMM  18.5  112.9   18.5  112.9   18.0  112.4 Analysis Plot     
     20130823 112653   -1.0      N/A   N/A   22.22    1.02  30.0 SSMI15  19.0  113.0   19.0  113.0   19.8  113.2 Analysis Plot     
     20130823 152500   -2.8      N/A   N/A   55.55    2.78  30.0 SSMI18  18.8  112.4   18.8  112.4   19.8  112.8 Analysis Plot     
     20130823 162712 -930.0      N/A   N/A  222.20   10.49  30.0   TRMM  18.8  112.4   18.8  112.4   19.5  112.7 Analysis Plot     
     20130824 005700   -2.6      N/A  17.8% 122.21    2.57  35.0 SSMI16  19.9  111.8   19.9  111.8   20.6  112.4 Analysis Plot     
     20130824 024100 -930.0      N/A   N/A   22.22   11.12  40.0 SSMI18  20.8  112.0   20.8  112.0   21.3  111.8 Analysis Plot     
     20130824 110714   -0.3      N/A   N/A   55.55     .29  40.0 SSMI15  22.8  112.9   22.8  112.9   23.2  113.3 Analysis Plot     
     20130824 132900   -1.5      N/A   5.5%  88.88    1.51  40.0 SSMI16  22.4  113.3   22.4  113.3   22.0  113.4 Analysis Plot     
     20130824 153057   -3.9      N/A   N/A   77.77    3.91  40.0   TRMM  22.7  113.5   22.7  113.5   22.2  113.8 Analysis Plot     
     20130825 004400   -3.6      N/A   N/A   77.77    3.62  35.0 SSMI16  23.3  114.3   23.3  114.3   23.5  113.8 Analysis Plot     
     20130825 080226   -3.4      N/A   6.8% 133.32    3.42  30.0   TRMM  24.2  114.7   24.2  114.7   24.6  114.5 Analysis Plot     
     20130825 131400   -0.7      N/A   N/A   44.44     .73  30.0 SSMI16  25.0  114.9   25.0  114.9   24.5  115.1 Analysis Plot     
     20130825 143446   -1.0      N/A   N/A   99.99     .98  30.0   TRMM  25.0  114.9   25.0  114.9   24.9  115.2 Analysis Plot     
     20130826 003100   -0.7      N/A   N/A   88.88     .69  25.0 SSMI16  26.1  115.4   26.1  115.4   26.6  115.3 Analysis Plot     
     20130826 014400   -3.6      N/A   N/A   22.22    3.60  25.0 SSMI17  26.2  115.5   26.2  115.5   26.2  115.4 Analysis Plot     
     20130826 035900   -1.9      N/A   N/A   66.66    1.89  25.0 SSMI18  26.3  115.6   26.3  115.6   26.8  115.5 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.