Tropical Storm 12E

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              
     20200816 194700   -7.2      N/A  39.7%  44.44    7.23  35.0  AMSR2  12.0   98.8   12.0   98.8   12.1   98.7 Analysis Plot     
     20200816 224951   -8.1      N/A   6.8%  33.33    8.09  35.0 SSMI16  12.3   99.4   12.3   99.4   11.9   99.3 Analysis Plot     
     20200817 003145   -7.3      N/A   N/A   66.66    7.32  35.0 SSMI16  12.4   99.9   12.4   99.9   12.5   99.0 Analysis Plot     
     20200817 125749    3.2      N/A  57.5%  77.77    3.22  55.0 SSMI16  13.7  102.4   13.8  102.2   13.8  102.2 Analysis Plot     
     20200817 125749    3.2      N/A  57.5%  77.77    3.22  55.0 SSMI18  13.7  102.4   13.8  102.2   13.8  102.2 Analysis Plot     
     20200817 164624    5.0      N/A  53.4% 111.10    5.00  65.0    GMI  14.5  103.4   14.6  103.4   14.6  103.4 Analysis Plot     
     20200817 234356   30.2  >65 kts  91.8%  33.33   15.16  75.0 SSMI18  15.8  105.0   15.8  105.3   15.8  105.3 Analysis Plot     
     20200818 002507   10.2      N/A  68.5%  22.22   10.25  75.0 SSMI16  15.8  105.2   15.7  104.9   15.7  104.9 Analysis Plot     
     20200818 012647   35.6  >65 kts 100.0%  33.33   20.60  75.0 SSMI18  16.0  105.4   15.8  105.4   15.8  105.4 Analysis Plot     
     20200818 060226   83.1  >85 kts 100.0%  44.44   68.09  85.0    GMI  16.9  106.6   16.9  106.5   16.9  106.5 Analysis Plot     
     20200818 084329   87.6  >85 kts 100.0%  44.44   72.62  90.0  AMSR2  17.4  107.1   17.2  107.1   17.2  107.1 Analysis Plot     
     20200818 124447   76.5  >85 kts 100.0%  33.33   61.47  90.0 SSMI16  17.8  107.6   17.6  107.3   17.6  107.3 Analysis Plot     
     20200818 135139   78.6  >85 kts 100.0%  44.44   63.62  90.0 SSMI18  17.9  107.8   17.7  107.7   17.7  107.7 Analysis Plot     
     20200818 225937    1.9      N/A   N/A   22.22    1.85  75.0 SSMI15  18.7  109.1   18.7  109.1   18.6  110.4 Analysis Plot     
     20200818 224656   64.0  >85 kts 100.0%  44.44   48.98 115.0 SSMI15  19.0  109.0   18.9  108.7   18.9  108.7 Analysis Plot     
     20200819 011406   61.6  >85 kts 100.0%  44.44   46.55 115.0 SSMI18  19.1  109.1   18.9  108.8   18.9  108.8 Analysis Plot     
     20200819 092610    9.3      N/A  13.7%  55.55    9.31 100.0  AMSR2  20.3  109.5   20.3  109.4   20.3  109.4 Analysis Plot     
     20200819 113521    7.7      N/A   N/A   55.55    7.69 100.0 SSMI15  20.5  109.6   20.5  109.5   20.5  109.5 Analysis Plot     
     20200819 131814    6.8      N/A   1.4%  55.55    6.81 100.0 SSMI18  20.6  109.6   20.7  109.6   20.7  109.6 Analysis Plot     
     20200819 202044    5.2      N/A  26.0%  55.55    5.24  85.0  AMSR2  21.3  110.0   21.3  109.9   21.3  109.9 Analysis Plot     
     20200819 223421 -930.0      N/A   N/A     N/A    0.00  85.0 SSMI15  21.6  110.2   21.3  110.4   21.3  110.4 Analysis Plot     
     20200820 010102 -930.0      N/A   N/A     N/A    0.00  85.0 SSMI18  21.7  110.3   21.3  110.1   21.3  110.1 Analysis Plot     
     20200820 111735 -930.0      N/A   N/A     N/A    0.00  70.0 SSMI15  22.7  110.6   22.8  111.1   22.8  111.1 Analysis Plot     
     20200820 131835 -930.0      N/A   N/A     N/A    0.00  70.0 SSMI18  22.8  110.7   22.8  111.1   22.8  111.1 Analysis Plot     
     20200820 234811    3.1      N/A  11.0% 177.76    3.13  60.0 SSMI16  24.1  112.7   24.1  112.7   23.4  112.9 Analysis Plot     
     20200821 091240   -2.8      N/A   N/A   11.11    2.81  45.0  AMSR2  24.4  114.4   24.4  114.4   24.5  114.2 Analysis Plot     
     20200821 133127   -3.8      N/A   N/A  222.20    3.80  45.0 SSMI16  24.7  114.8   24.7  114.8   25.0  114.5 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.