Tropical Storm 09E

Passive Microwave (PMW) Intensity Information
Hurricane Intensity Estimation (HIE) Algorithm
Version 9.0


         Overpass     Inten           Ring    Ring          Wind           Forecast        Final        Target  
       Date    Time   Score  Meaning   Pct    Diam  BTdiff   Est   Sat    Lat    Lon    Lat    Lon    Lat    Lon              
     20200809 084958    N/A      N/A   N/A     N/A     N/A  35.0  AMSR2  15.8  104.2   15.8  104.2   16.5  105.0 Analysis Plot     
     20200809 110001   -9.6      N/A  41.1%  66.66    9.64  35.0 SSMI15  16.0  104.5   16.0  104.5   16.1  104.4 Analysis Plot     
     20200809 124451   -7.3      N/A  13.7%  55.55    7.29  35.0 SSMI16  16.1  104.8   16.1  104.8   16.1  104.6 Analysis Plot     
     20200809 224304  -15.5      N/A  76.7%  11.11   15.54  45.0 SSMI16  17.1  106.6   17.1  106.6   17.2  106.4 Analysis Plot     
     20200809 234401 -930.0      N/A   N/A     N/A    0.00  45.0 SSMI18  17.2  106.8   17.2  106.8   16.4  107.1 Analysis Plot     
     20200810 002804   -1.5      N/A  35.6% 111.10    1.51  45.0 SSMI16  17.3  107.0   17.3  107.0   17.0  106.7 Analysis Plot     
     20200810 012710    N/A      N/A   N/A     N/A     N/A  45.0 SSMI18  17.4  107.2   17.4  107.2   17.2  106.9 Analysis Plot     
     20200810 124745    3.2      N/A  17.8% 144.43    3.16  55.0 SSMI16  18.6  109.4   18.6  109.4   18.5  109.3 Analysis Plot     
     20200810 134325   11.9      N/A   9.6%  44.44   11.85  55.0 SSMI18  18.6  109.7   18.6  109.7   18.8  109.4 Analysis Plot     
     20200810 202619   10.7      N/A  31.5%  22.22   10.72  65.0  AMSR2  19.5  110.7   19.5  110.7   19.5  110.7 Analysis Plot     
     20200810 232639 -930.0      N/A   N/A     N/A    0.00  45.0 SSMI15  19.3  112.4   19.3  112.4   19.4  111.7 Analysis Plot     
     20200810 234513    N/A      N/A   N/A     N/A     N/A  65.0 SSMI18  19.8  111.3   19.6  111.3   19.6  111.3 Analysis Plot     
     20200811 114656    4.7      N/A  20.5%  66.66    4.66  75.0 SSMI15  21.0  113.7   21.0  113.7   21.0  113.4 Analysis Plot     
     20200811 132341    9.8      N/A  52.1%  33.33    9.82  75.0 SSMI18  21.0  113.7   21.0  113.7   21.2  113.7 Analysis Plot     
     20200811 210943    N/A      N/A   N/A     N/A     N/A  85.0  AMSR2  22.1  115.3   22.1  115.3   22.1  115.3 Analysis Plot     
     20200812 114548 -930.0      N/A   N/A     N/A    0.00  65.0 SSMI15  23.2  118.2   23.2  118.2   22.9  118.0 Analysis Plot     
     20200812 140339    1.6      N/A   N/A   88.88    1.62  65.0 SSMI16  23.3  118.4   23.3  118.4   23.4  118.4 Analysis Plot     
     20200812 235105   -2.4      N/A   N/A  222.20    2.39  45.0 SSMI16  23.9  119.8   23.9  119.8   23.5  119.9 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.