Typhoon 17U

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              
     20190313 100011    N/A      N/A   N/A     N/A     N/A  30.0 SSMI16 -10.1  -97.5  -10.1  -97.5  -10.4  -96.6 Analysis Plot     
     20190313 121709 -930.0      N/A   N/A     N/A    0.00  30.0 SSMI17 -10.4  -97.4  -10.4  -97.4  -10.2  -97.3 Analysis Plot     
     20190313 235235 -930.0      N/A   N/A     N/A    0.00  35.0 SSMI18 -11.4  -96.9  -11.4  -96.9  -11.3  -95.7 Analysis Plot     
     20190314 013539    N/A      N/A   N/A     N/A     N/A  35.0 SSMI17 -11.6  -96.9  -11.6  -96.9  -11.5  -95.4 Analysis Plot     
     20190314 111521 -930.0      N/A   N/A     N/A    0.00  40.0 SSMI15 -12.7  -95.8  -12.7  -95.8  -13.6  -95.0 Analysis Plot     
     20190314 121146    N/A      N/A   N/A     N/A     N/A  40.0 SSMI18 -12.9  -95.7  -12.9  -95.7  -12.3  -95.2 Analysis Plot     
     20190314 233953   -3.2      N/A  38.4% 122.21    3.16  40.0 SSMI18 -13.2  -95.3  -13.3  -95.1  -13.3  -95.1 Analysis Plot     
     20190315 012356   -5.8      N/A  35.6%  99.99    5.81  40.0 SSMI17 -13.3  -95.3  -13.5  -95.3  -13.5  -95.3 Analysis Plot     
     20190315 071753    4.8      N/A  61.6%  88.88    4.82  60.0  AMSR2 -13.9  -94.7  -13.9  -94.6  -13.9  -94.6 Analysis Plot     
     20190315 114927   36.0  >65 kts 100.0%  33.33   21.01  60.0 SSMI18 -14.1  -94.4  -14.1  -94.4  -14.4  -94.8 Analysis Plot     
     20190315 133203   46.5  >65 kts 100.0%  44.44   31.52  60.0 SSMI17 -14.4  -94.5  -14.5  -94.6  -14.5  -94.6 Analysis Plot     
     20190315 230242   31.7  >65 kts  94.5%  44.44   16.73  70.0 SSMI16 -15.1  -93.8  -14.7  -93.8  -14.7  -93.8 Analysis Plot     
     20190315 232844 -930.0      N/A   N/A     N/A    0.00  70.0 SSMI18 -15.1  -93.8  -14.7  -94.0  -14.7  -94.0 Analysis Plot     
     20190316 011046   45.5  >65 kts 100.0%  44.44   30.47  70.0 SSMI17 -15.2  -93.7  -14.7  -93.9  -14.7  -93.9 Analysis Plot     
     20190316 113657   38.5  >65 kts 100.0%  22.22   23.50  75.0 SSMI18 -15.3  -92.9  -15.5  -93.0  -15.5  -93.0 Analysis Plot     
     20190316 131830    5.1      N/A  82.2%  22.22    5.07  75.0 SSMI17 -15.3  -92.9  -15.5  -93.0  -15.5  -93.0 Analysis Plot     
     20190316 185242   70.2  >85 kts 100.0%  22.22   55.17  80.0  AMSR2 -15.6  -92.3  -15.8  -92.3  -15.8  -92.3 Analysis Plot     
     20190317 004620   11.9      N/A  38.4%  22.22   11.87  80.0 SSMI17 -15.7  -91.9  -16.0  -91.7  -16.0  -91.7 Analysis Plot     
     20190317 104820    0.5      N/A   N/A  211.09     .53  95.0 SSMI16 -16.0  -90.8  -16.5  -90.9  -16.5  -90.9 Analysis Plot     
     20190317 125522    2.2      N/A   N/A  188.87    2.23  95.0 SSMI17 -16.1  -90.6  -16.5  -90.9  -16.5  -90.9 Analysis Plot     
     20190317 193529    N/A      N/A   N/A     N/A     N/A  90.0  AMSR2 -16.5  -89.9  -16.7  -90.6  -16.7  -90.6 Analysis Plot     
     20190317 222401    N/A      N/A   N/A     N/A     N/A  90.0 SSMI16 -16.5  -89.8  -16.9  -90.8  -16.9  -90.8 Analysis Plot     
     20190318 004118 -930.0      N/A   N/A     N/A    0.00  90.0 SSMI18 -16.6  -89.6  -16.6  -89.6  -17.4  -90.0 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.