Tropical Storm 23W

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              
     20191029 212146   -4.5      N/A   N/A   44.44    4.53  25.0 SSMI15  12.7 -112.3   12.7 -112.3   13.2 -112.5 Analysis Plot     
     20191029 221222 -930.0      N/A   N/A     N/A    0.00  25.0 SSMI16  12.7 -112.2   12.7 -112.2   13.3 -112.5 Analysis Plot     
     20191029 225758 -930.0      N/A   N/A     N/A    0.00  25.0 SSMI18  12.7 -112.0   12.7 -112.0   12.4 -113.2 Analysis Plot     
     20191030 060517   -3.5      N/A  37.0% 144.43    3.54  35.0  AMSR2  13.4 -110.8   13.4 -110.8   13.5 -110.9 Analysis Plot     
     20191030 093009   -4.4      N/A  58.9%  33.33    4.41  40.0 SSMI15  13.2 -110.8   13.2 -110.8   13.0 -110.8 Analysis Plot     
     20191030 181930   -6.3      N/A  38.4%  22.22    6.29  50.0  AMSR2  13.7 -108.7   13.3 -108.7   13.3 -108.7 Analysis Plot     
     20191030 203900   -2.1      N/A  41.1%  22.22    2.13  45.0 SSMI15  13.7 -108.3   13.7 -108.3   13.5 -108.0 Analysis Plot     
     20191030 220643   -2.6      N/A  82.2%  33.33    2.63  45.0 SSMI16  13.7 -108.2   13.7 -108.2   14.0 -108.0 Analysis Plot     
     20191030 224515   -5.1      N/A  69.9%  66.66    5.10  45.0 SSMI18  13.7 -108.0   13.7 -108.0   14.0 -107.8 Analysis Plot     
     20191106 221015   -2.7      N/A  12.3% 211.09    2.73  35.0 SSMI15  14.1  -90.3   14.1  -90.3   13.9  -90.1 Analysis Plot     
     20191107 003637   -1.0      N/A   N/A  122.21     .96  35.0 SSMI18  14.2  -90.2   14.2  -90.2   14.1  -90.9 Analysis Plot     
     20191107 101820    3.2      N/A  39.7%  99.99    3.16  55.0 SSMI16  15.4  -88.5   15.4  -88.5   15.8  -88.1 Analysis Plot     
     20191107 111643    7.7      N/A  47.9%  99.99    7.74  55.0 SSMI18  15.5  -88.4   15.5  -88.4   15.9  -88.0 Analysis Plot     
     20191107 145437    9.5      N/A  42.5%  44.44    9.52  55.0    GMI  16.3  -88.1   15.8  -87.8   15.8  -87.8 Analysis Plot     
     20191107 221912    2.4      N/A  26.0%  44.44    2.44  65.0 SSMI15  16.6  -87.7   16.6  -87.7   16.7  -87.6 Analysis Plot     
     20191107 234333    9.1      N/A  57.5%  44.44    9.11  65.0 SSMI16  16.7  -87.7   16.7  -87.7   16.9  -87.5 Analysis Plot     
     20191108 002412    N/A      N/A   N/A     N/A     N/A  65.0 SSMI18  16.8  -87.7   16.8  -87.7   16.9  -87.6 Analysis Plot     
     20191108 100511    4.6      N/A   9.6%  44.44    4.60  85.0 SSMI16  18.1  -87.8   18.5  -87.8   18.5  -87.8 Analysis Plot     
     20191108 105451    5.5      N/A  34.2%  66.66    5.55  85.0 SSMI18  18.2  -87.8   18.7  -87.8   18.7  -87.8 Analysis Plot     
     20191108 233027    5.4      N/A  24.7%  88.88    5.39  85.0 SSMI16  19.9  -87.8   20.1  -87.7   20.1  -87.7 Analysis Plot     
     20191109 001146   40.0  >65 kts 100.0%  66.66   24.98  85.0 SSMI18  20.0  -87.8   20.0  -87.7   20.0  -87.7 Analysis Plot     
     20191109 095205   43.3  >65 kts 100.0%  44.44   28.26  70.0 SSMI16  21.0  -87.7   21.0  -87.7   21.0  -87.9 Analysis Plot     
     20191109 230826    N/A      N/A   N/A     N/A     N/A  80.0 SSMI16  21.9  -89.3   21.9  -89.3   21.6  -89.8 Analysis Plot     
     20191109 235931    0.3      N/A  13.7% 155.54     .27  80.0 SSMI18  21.9  -89.4   21.9  -89.4   21.7  -90.0 Analysis Plot     
     20191110 072819    N/A      N/A   N/A     N/A     N/A  70.0  AMSR2  22.4  -90.4   22.4  -90.4   22.4  -90.4 Analysis Plot     
     20191110 094825 -930.0      N/A   N/A     N/A    0.00  55.0 SSMI16  22.5  -90.4   22.5  -90.4   23.0  -89.4 Analysis Plot     
     20191110 193719   -1.7      N/A   N/A  111.10    1.66  45.0  AMSR2  23.3  -91.3   23.3  -91.3   23.2  -91.3 Analysis Plot     
     20191110 225517   -1.8      N/A   N/A   77.77    1.80  45.0 SSMI16  23.4  -91.4   23.4  -91.4   23.3  -91.2 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.