Tropical Depression 12L

Passive Microwave (PMW) Intensity Information
Hurricane Intensity Estimation (HIE) Algorithm
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              
     20131003 113700   -5.2      N/A   N/A   33.33    5.15  45.0 SSMI16  22.2   87.7   22.2   87.7   22.0   88.0 Analysis Plot     
     20131003 134800   -0.3      N/A   N/A  133.32     .32  50.0 SSMI18  22.1   87.8   22.1   87.8   21.1   88.3 Analysis Plot     
     20131003 225200    5.8      N/A   N/A   88.88    5.82  55.0 SSMI16  23.5   88.6   23.5   88.6   23.4   88.5 Analysis Plot     
     20131004 000200    4.8      N/A  20.5%  77.77    4.78  55.0 SSMI17  23.8   88.8   23.8   88.8   23.6   88.4 Analysis Plot     
     20131004 103019    7.4      N/A   8.2%  99.99    7.41  55.0   TRMM  25.0   89.9   25.0   89.9   25.4   89.5 Analysis Plot     
     20131004 112300    3.3      N/A  15.1%  77.77    3.35  55.0 SSMI16  25.3   90.0   25.3   90.0   25.6   89.6 Analysis Plot     
     20131004 123200    5.2      N/A  12.3% 111.10    5.20  55.0 SSMI17  25.4   90.0   25.4   90.0   25.8   89.7 Analysis Plot     
     20131004 224000   -6.0      N/A   6.8% 188.87    6.00  45.0 SSMI16  26.0   90.3   26.0   90.3   26.4   89.9 Analysis Plot     
     20131004 234800   -4.0      N/A   N/A   88.88    4.00  45.0 SSMI17  26.1   90.4   26.1   90.4   26.1   90.4 Analysis Plot     
     20131004 234900   -4.1      N/A   N/A   88.88    4.06  45.0 SSMI17  26.3   90.4   26.3   90.4   26.1   90.4 Analysis Plot     
     20131005 093440   -8.6      N/A   N/A   99.99    8.61  35.0   TRMM  27.1   91.3   27.1   91.3   27.1   91.4 Analysis Plot     
     20131005 101026   -4.5      N/A   N/A   33.33    4.53  35.0 SSMI15  27.3   91.3   27.3   91.3   27.4   91.2 Analysis Plot     
     20131005 111000   -7.1      N/A   N/A   55.55    7.08  35.0 SSMI16  27.3   91.3   27.3   91.3   27.5   91.1 Analysis Plot     
     20131005 121700   -5.0      N/A   N/A   55.55    5.03  35.0 SSMI17  27.4   91.3   27.4   91.3   27.7   91.3 Analysis Plot     
     20131005 160549   -4.6      N/A  42.5%  33.33    4.62  35.0   TRMM  27.9   91.7   27.9   91.7   27.8   91.4 Analysis Plot     
     20131005 233700   -4.0      N/A   N/A   22.22    3.95  35.0 SSMI17  28.1   91.9   28.1   91.9   27.8   91.8 Analysis Plot     
     20131006 022300 -930.0      N/A   N/A   33.33    9.07  35.0 SSMI18  28.1   91.9   28.1   91.9   28.0   91.7 Analysis Plot     
     20131006 101637   -9.9      N/A   N/A   11.11    9.94  25.0   TRMM  28.3   91.6   28.3   91.6   28.4   91.2 Analysis Plot     
     20131006 105800    N/A      N/A   N/A     N/A     N/A  25.0 SSMI16  28.5   91.4   28.5   91.4   28.2   90.9 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.