Tropical Storm 08L

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              
     20150909 073625   -4.9      N/A   N/A   44.44    4.91  30.0 SSMI15  30.9   61.4   30.9   61.4   31.0   61.7 Analysis Plot     
     20150909 101000   -2.2      N/A   N/A   22.22    2.19  30.0 SSMI17  30.9   61.4   30.9   61.4   30.3   61.6 Analysis Plot     
     20150909 121200   -3.9      N/A   8.2% 199.98    3.86  30.0 SSMI18  30.7   60.9   30.7   60.9   30.3   61.4 Analysis Plot     
     20150909 185338   -2.9      N/A   1.4% 188.87    2.88  30.0 SSMI15  30.5   60.5   30.5   60.5   30.5   60.8 Analysis Plot     
     20150909 213000   -1.7      N/A   9.6% 222.20    1.74  30.0 SSMI17  30.6   60.4   30.6   60.4   30.3   59.9 Analysis Plot     
     20150909 233300   -6.7      N/A   8.3% 222.20    6.65  30.0 SSMI18  31.1   60.6   31.1   60.6   31.0   60.5 Analysis Plot     
     20150910 115900   -0.0      N/A   N/A     N/A    0.00  35.0 SSMI18  32.2   60.9   32.2   60.9   32.2   60.8 Analysis Plot     
     20150910 211800   -1.0      N/A   N/A   11.11     .98  35.0 SSMI17  33.9   60.7   33.9   60.7   34.1   60.6 Analysis Plot     
     20150910 232100   -4.3      N/A  13.7% 177.76    4.28  35.0 SSMI18  34.6   60.6   34.6   60.6   34.7   60.4 Analysis Plot     
     20150911 031524   -0.0      N/A   N/A     N/A    0.00  35.0    GMI  34.9   60.7   34.9   60.7   35.7   60.6 Analysis Plot     
     20150911 072259   -1.7      N/A   N/A   11.11    1.69  35.0 SSMI15  35.8   60.4   35.8   60.4   35.9   60.3 Analysis Plot     
     20150911 114500   -7.8      N/A  12.3%  99.99    7.80  35.0 SSMI18  37.3   59.8   37.3   59.8   37.4   59.4 Analysis Plot     
     20150911 231100   -8.2      N/A  34.2% 222.20    8.25  35.0 SSMI18  41.0   57.7   41.0   57.7   41.4   57.2 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.