Tropical Storm 17E

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              
     20211022 150639   -0.6      N/A  26.0%  44.44     .59  30.0 SSMI17  12.7  100.4   12.7  100.4   13.1  100.8 Analysis Plot     
     20211022 194814   -1.6      N/A  68.5%  33.33    1.57  35.0  AMSR2  13.0  100.9   13.0  100.9   13.0  101.3 Analysis Plot     
     20211022 234439    N/A      N/A   N/A     N/A     N/A  35.0 SSMI16  13.2  101.1   13.2  101.1   13.3  101.1 Analysis Plot     
     20211023 010216    N/A      N/A   N/A     N/A     N/A  35.0 SSMI17  13.3  101.1   13.3  101.1   13.2  101.3 Analysis Plot     
     20211023 025231    N/A      N/A   N/A     N/A     N/A  40.0 SSMI17  13.3  101.3   13.3  101.3   13.2  101.3 Analysis Plot     
     20211023 080238    N/A      N/A   N/A     N/A     N/A  55.0  AMSR2  13.9  101.4   13.9  101.4   13.1  101.0 Analysis Plot     
     20211023 102421   49.6  >65 kts 100.0%  22.22   34.55  55.0    GMI  14.0  101.4   14.2  101.2   14.2  101.2 Analysis Plot     
     20211023 145310    8.4      N/A  75.3%  11.11    8.36  65.0 SSMI17  14.6  101.5   14.6  101.3   14.6  101.3 Analysis Plot     
     20211023 203137    0.7      N/A  56.2%  11.11     .75  75.0  AMSR2  15.0  101.8   14.9  102.0   14.9  102.0 Analysis Plot     
     20211023 233139    5.8      N/A  38.4%  55.55    5.77  75.0 SSMI16  15.2  101.9   15.0  101.8   15.0  101.8 Analysis Plot     
     20211024 004931   28.7  >65 kts  87.7%  22.22   13.71  75.0 SSMI17  15.3  101.9   14.9  101.7   14.9  101.7 Analysis Plot     
     20211024 010348    4.5      N/A  68.5%  22.22    4.52  75.0 SSMI18  15.3  101.9   14.8  102.0   14.8  102.0 Analysis Plot     
     20211024 023826   14.1      N/A  84.9%  22.22   14.09  75.0 SSMI17  15.4  102.0   14.9  101.6   14.9  101.6 Analysis Plot     
     20211024 084432 -930.0      N/A   N/A     N/A    0.00  75.0  AMSR2  15.6  101.7   15.6  101.7   14.9  101.3 Analysis Plot     
     20211024 133058    1.0      N/A   6.8%  66.66     .98  75.0 SSMI16  15.9  101.7   15.9  101.7   16.3  101.7 Analysis Plot     
     20211024 143831 -930.0      N/A   N/A     N/A    0.00  75.0 SSMI17  15.9  101.7   15.9  101.7   16.7  102.9 Analysis Plot     
     20211024 193803 -930.0      N/A   N/A     N/A    0.00  75.0  AMSR2  16.4  101.8   16.4  101.8   16.1  101.1 Analysis Plot     
     20211024 224838   53.0  >65 kts 100.0%  55.55   38.04  75.0    GMI  16.5  101.7   16.4  101.5   16.4  101.5 Analysis Plot     
     20211024 230820   46.2  >65 kts 100.0%  55.55   31.19  75.0 SSMI18  16.4  101.7   16.4  101.7   16.4  101.7 Analysis Plot     
     20211024 231818   45.9  >65 kts 100.0%  55.55   30.85  75.0 SSMI16  16.4  101.7   16.3  101.5   16.3  101.5 Analysis Plot     
     20211025 005034   45.3  >65 kts 100.0%  55.55   30.32  75.0 SSMI18  16.6  101.8   16.4  101.7   16.4  101.7 Analysis Plot     
     20211025 131340    0.9      N/A  27.4%  44.44     .91  90.0 SSMI16  18.1  102.1   18.0  101.9   18.0  101.9 Analysis Plot     
     20211025 142605    0.1      N/A  42.5% 177.76     .14  90.0 SSMI17  18.3  102.1   18.6  102.0   18.6  102.0 Analysis Plot     
     20211025 202017   -0.7      N/A   N/A  166.65     .74  50.0  AMSR2  19.8  102.5   19.8  102.5   19.4  102.9 Analysis Plot     
     20211025 225551 -930.0      N/A   N/A     N/A    0.00  85.0 SSMI18  19.5  102.8   19.5  102.8   19.1  102.8 Analysis Plot     
     20211026 003722   -1.1      N/A   N/A   44.44    1.11  50.0 SSMI18  20.5  102.6   20.5  102.6   20.1  102.4 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.