Typhoon 30Y_08

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              
     20200827 202737 -930.0      N/A   N/A     N/A    0.00  30.0 SSMI16  16.5 -131.4   16.5 -131.4   17.0 -132.4 Analysis Plot     
     20200827 213814 -930.0      N/A   N/A     N/A    0.00  30.0 SSMI18  16.5 -131.4   16.5 -131.4   16.9 -132.4 Analysis Plot     
     20200828 173637 -930.0      N/A   N/A     N/A    0.00  50.0  AMSR2  16.4 -129.4   16.4 -129.4   16.9 -129.3 Analysis Plot     
     20200828 201429 -930.0      N/A   N/A     N/A    0.00  50.0 SSMI16  16.4 -129.4   16.4 -129.4   16.7 -129.3 Analysis Plot     
     20200828 212542 -930.0      N/A   N/A     N/A    0.00  50.0 SSMI18  16.4 -129.4   16.4 -129.4   17.0 -129.0 Analysis Plot     
     20200829 042754    7.2      N/A  24.7%  88.88    7.20  55.0  AMSR2  16.3 -129.3   16.6 -129.5   16.6 -129.5 Analysis Plot     
     20200829 093547    1.8      N/A  19.2%  99.99    1.82  55.0 SSMI18  16.8 -129.2   16.8 -129.2   16.5 -129.4 Analysis Plot     
     20200829 164108 -930.0      N/A   N/A     N/A    0.00  65.0  AMSR2  17.1 -128.4   17.1 -128.4   17.9 -127.1 Analysis Plot     
     20200829 211313 -930.0      N/A   N/A     N/A    0.00  70.0 SSMI18  17.0 -129.2   17.4 -128.4   17.4 -128.4 Analysis Plot     
     20200830 051124   13.9      N/A  60.3%  44.44   13.87  75.0  AMSR2  17.2 -128.9   18.6 -129.1   18.6 -129.1 Analysis Plot     
     20200830 082308 -930.0      N/A   N/A     N/A    0.00  75.0 SSMI16  18.5 -128.6   18.6 -128.8   18.6 -128.8 Analysis Plot     
     20200830 172204    N/A      N/A   N/A     N/A     N/A  80.0  AMSR2  20.4 -128.6   20.4 -128.6   21.3 -127.6 Analysis Plot     
     20200830 211353   23.4  >65 kts  76.7%  77.77   23.37  80.0 SSMI18  21.0 -128.7   21.6 -128.7   21.6 -128.7 Analysis Plot     
     20200831 041827   53.3  >65 kts 100.0%  55.55   38.34  80.0  AMSR2  23.0 -127.7   23.9 -128.0   23.9 -128.0 Analysis Plot     
     20200831 075838   48.0  >65 kts 100.0%  55.55   33.01  80.0 SSMI16  24.3 -127.1   24.3 -127.2   24.3 -127.2 Analysis Plot     
     20200831 211722   12.4      N/A  69.9%  44.44   12.42  90.0 SSMI16  26.6 -126.3   26.5 -126.3   26.5 -126.3 Analysis Plot     
     20200901 050118    N/A      N/A   N/A     N/A     N/A  95.0  AMSR2  27.2 -125.4   27.2 -125.4   27.2 -125.4 Analysis Plot     
     20200901 075744   13.2      N/A  60.3%  33.33   13.17  95.0 SSMI16  27.5 -126.1   27.8 -126.2   27.8 -126.2 Analysis Plot     
     20200901 204700 -930.0      N/A   N/A     N/A    0.00  90.0    GMI  29.8 -126.3   29.7 -126.5   29.7 -126.5 Analysis Plot     
     20200901 210412   16.4      N/A  69.8% 311.08   16.38  90.0 SSMI16  29.7 -126.2   29.6 -126.4   29.6 -126.4 Analysis Plot     
     20200901 221714 -930.0      N/A   N/A     N/A    0.00  90.0 SSMI18  29.9 -126.3   29.7 -126.4   29.7 -126.4 Analysis Plot     
     20200902 073225   16.3      N/A   1.4% 199.98   16.32  85.0 SSMI16  32.0 -127.2   31.9 -127.3   31.9 -127.3 Analysis Plot     
     20200902 101111 -930.0      N/A   N/A     N/A    0.00  85.0    GMI  32.8 -127.3   32.5 -127.6   32.5 -127.6 Analysis Plot     
     20200902 102658 -930.0      N/A   N/A     N/A    0.00  85.0 SSMI18  32.5 -127.2   32.2 -127.3   32.2 -127.3 Analysis Plot     
     20200902 174915    N/A      N/A   N/A     N/A     N/A  80.0  AMSR2  35.4 -128.6   35.6 -128.9   35.6 -128.9 Analysis Plot     
     20200902 205109    9.2      N/A  78.1%  66.66    9.15  80.0 SSMI16  36.2 -128.9   36.2 -128.9   36.8 -129.1 Analysis Plot     
     20200902 220444    4.3      N/A  15.1%  66.66    4.25  80.0 SSMI18  36.7 -129.0   36.7 -129.0   37.1 -129.1 Analysis Plot     
     20200903 045305    6.1      N/A   N/A  311.08    6.11  70.0  AMSR2  40.9 -129.0   40.9 -129.0   41.2 -129.5 Analysis Plot     
     20200903 091116 -930.0      N/A   N/A     N/A    0.00  70.0 SSMI16  43.3 -127.8   43.3 -127.8   42.6 -129.0 Analysis Plot     
     20200903 101418 -930.0      N/A   N/A     N/A    0.00  70.0 SSMI18  43.9 -127.4   43.9 -127.4   43.3 -128.3 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.