Typhoon 31Y_03

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              
     20210923 193904   -1.7      N/A   8.2% 111.10    1.69  35.0 SSMI18  13.5 -142.2   13.5 -142.2   14.1 -141.9 Analysis Plot     
     20210923 195816 -930.0      N/A   N/A     N/A    0.00  35.0 SSMI16  13.5 -142.2   13.5 -142.2   13.8 -141.9 Analysis Plot     
     20210924 225152   -6.1      N/A  69.9%  33.33    6.13  50.0 SSMI17  16.6 -138.7   16.8 -138.2   16.8 -138.2 Analysis Plot     
     20210925 033927 -930.0      N/A   N/A     N/A    0.00  55.0  AMSR2  16.8 -138.6   16.8 -138.6   16.2 -138.3 Analysis Plot     
     20210925 075706    5.0      N/A  71.2%  33.33    4.97  65.0 SSMI16  17.4 -137.5   17.5 -137.7   17.5 -137.7 Analysis Plot     
     20210925 092542    9.7      N/A  69.9%  33.33    9.67  65.0 SSMI18  17.5 -137.5   17.5 -137.7   17.5 -137.7 Analysis Plot     
     20210925 211302   82.8  >85 kts 100.0%  55.55   67.80  85.0 SSMI16  18.5 -137.3   18.6 -137.0   18.6 -137.0 Analysis Plot     
     20210925 223829   95.2  >85 kts 100.0%  44.44   80.22  85.0 SSMI17  18.6 -137.3   18.7 -136.9   18.7 -136.9 Analysis Plot     
     20210926 042130   92.3  >85 kts 100.0%  44.44   77.25  85.0  AMSR2  18.6 -136.4   18.7 -136.7   18.7 -136.7 Analysis Plot     
     20210926 092252   75.7  >85 kts 100.0%  33.33   60.74 100.0 SSMI16  18.6 -136.3   18.8 -136.8   18.8 -136.8 Analysis Plot     
     20210926 204028   17.5      N/A  37.0% 133.32   17.51 105.0 SSMI18  19.1 -136.4   19.5 -136.6   19.5 -136.6 Analysis Plot     
     20210926 210124   18.1      N/A  34.2% 133.32   18.07 105.0 SSMI16  19.1 -136.4   19.5 -136.7   19.5 -136.7 Analysis Plot     
     20210926 222512    7.5      N/A  39.7% 177.76    7.49 105.0 SSMI17  19.1 -136.3   19.6 -136.7   19.6 -136.7 Analysis Plot     
     20210927 085042   19.7      N/A  27.4% 133.32   19.68 100.0 SSMI18  19.6 -136.4   19.8 -136.5   19.8 -136.5 Analysis Plot     
     20210927 085925   16.3      N/A  27.4% 133.32   16.31 100.0 SSMI16  19.6 -136.4   19.8 -136.5   19.8 -136.5 Analysis Plot     
     20210927 202743   14.0      N/A  37.0% 144.43   14.04  95.0 SSMI18  20.2 -136.0   20.6 -136.3   20.6 -136.3 Analysis Plot     
     20210927 204816   12.9      N/A  34.2% 155.54   12.91  95.0 SSMI16  20.1 -136.0   20.6 -136.4   20.6 -136.4 Analysis Plot     
     20210928 040956   49.7  >65 kts 100.0% 199.98   34.66  95.0  AMSR2  20.7 -135.8   21.3 -135.9   21.3 -135.9 Analysis Plot     
     20210928 070521   21.8  >65 kts  42.5% 144.43   21.84  95.0 SSMI16  21.3 -135.5   21.6 -135.7   21.6 -135.7 Analysis Plot     
     20210928 083757   25.5  >65 kts  65.8% 166.65   25.47  95.0 SSMI18  21.5 -135.5   21.7 -135.7   21.7 -135.7 Analysis Plot     
     20210928 203449   25.7  >65 kts  79.5% 133.32   25.72  95.0 SSMI16  22.3 -135.1   22.9 -135.6   22.9 -135.6 Analysis Plot     
     20210929 232614 -930.0      N/A   N/A     N/A    0.00  95.0 SSMI17  25.3 -135.6   26.4 -136.2   26.4 -136.2 Analysis Plot     
     20211001 073501    2.0      N/A  13.7% 233.31    2.01  85.0 SSMI18  33.1 -141.9   33.2 -142.5   33.2 -142.5 Analysis Plot     
     20211001 193747 -930.0      N/A   N/A     N/A    0.00  70.0 SSMI18  37.2 -145.2   37.2 -145.2   37.4 -146.1 Analysis Plot     
     20211001 225926 -930.0      N/A   N/A     N/A    0.00  70.0 SSMI17  37.4 -145.1   37.4 -145.1   38.2 -146.7 Analysis Plot     
     20211002 035132 -930.0      N/A   N/A     N/A    0.00  65.0  AMSR2  39.4 -147.9   39.4 -147.9   40.6 -149.0 Analysis Plot     
     20211002 061302 -930.0      N/A   N/A     N/A    0.00  65.0 SSMI16  39.7 -148.3   39.7 -148.3   40.6 -149.6 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.