Tropical Storm 19W

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              
     20220925 220145 -930.0      N/A   N/A     N/A    0.00  30.0 SSMI17  23.0 -144.5   23.0 -144.5   22.5 -143.6 Analysis Plot     
     20220926 035155   -4.2      N/A   3.1% 233.31    4.19  35.0  AMSR2  23.4 -142.8   23.4 -142.8   23.5 -142.5 Analysis Plot     
     20220926 083504   -1.2      N/A  11.0% 233.31    1.16  40.0 SSMI18  24.1 -142.4   24.1 -142.4   24.4 -142.2 Analysis Plot     
     20220926 091305 -930.0      N/A   N/A     N/A    0.00  40.0 SSMI16  24.3 -142.3   24.3 -142.3   24.6 -141.7 Analysis Plot     
     20220926 160039  -16.5      N/A  46.6%  66.66   16.49  40.0  AMSR2  25.8 -141.5   25.8 -141.5   26.9 -142.1 Analysis Plot     
     20220926 201207  -14.7      N/A  15.1%  44.44   14.67  40.0 SSMI18  26.2 -141.4   26.2 -141.4   27.2 -141.7 Analysis Plot     
     20220926 204940   -8.9      N/A  26.0%  44.44    8.92  40.0 SSMI16  26.3 -141.3   26.3 -141.3   27.5 -141.9 Analysis Plot     
     20220927 083905   -2.1      N/A  21.9% 188.87    2.08  45.0 SSMI16  29.5 -142.3   29.5 -142.3   28.8 -142.6 Analysis Plot     
     20220927 164205   -3.8      N/A   6.8%  44.44    3.85  50.0  AMSR2  30.9 -143.9   30.6 -143.8   30.6 -143.8 Analysis Plot     
     20220927 195914   -1.8      N/A  28.8%  33.33    1.83  50.0 SSMI18  31.3 -144.4   31.3 -144.4   31.5 -144.3 Analysis Plot     
     20220927 204611    4.8      N/A  15.1% 155.54    4.80  55.0 SSMI16  31.5 -144.8   31.5 -144.8   31.0 -144.2 Analysis Plot     
     20220928 034215    3.9      N/A  68.5% 122.21    3.88  60.0  AMSR2  33.0 -146.6   32.9 -146.7   32.9 -146.7 Analysis Plot     
     20220928 074824 -930.0      N/A   N/A     N/A    0.00  60.0 SSMI17  33.9 -148.0   33.9 -148.0   33.5 -148.4 Analysis Plot     
     20220928 082553   13.3      N/A  21.9%  88.88   13.35  65.0 SSMI16  33.6 -148.4   33.4 -148.1   33.4 -148.1 Analysis Plot     
     20220928 194702   21.4  >65 kts  32.9% 155.54   21.42  65.0 SSMI18  36.9 -153.6   36.6 -153.5   36.6 -153.5 Analysis Plot     
     20220928 212226 -930.0      N/A   N/A     N/A    0.00  65.0 SSMI17  37.7 -154.4   37.7 -154.4   36.9 -154.3 Analysis Plot     
     20220929 024833    N/A      N/A   N/A     N/A     N/A  65.0  AMSR2  40.1 -157.5   40.1 -157.5   40.1 -157.5 Analysis Plot     
     20220929 043304 -930.0      N/A   N/A     N/A    0.00  65.0 SSMI18  40.5 -158.1   40.5 -158.1   39.8 -158.9 Analysis Plot     
     20220929 073452    3.3      N/A  23.4% 311.08    3.26  65.0 SSMI17  41.9 -159.8   41.9 -159.8   41.7 -160.6 Analysis Plot     
     20220929 144636    3.4      N/A  12.3% 122.21    3.39  65.0  AMSR2  46.4 -164.9   46.2 -165.6   46.2 -165.6 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.