Tropical Depression 14W

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              
     20200920 201844 -930.0      N/A   N/A     N/A    0.00  35.0 SSMI16  24.1 -133.9   24.1 -133.9   24.0 -133.9 Analysis Plot     
     20200920 213918 -930.0      N/A   N/A     N/A    0.00  35.0 SSMI18  24.2 -133.9   24.2 -133.9   24.7 -134.9 Analysis Plot     
     20200921 043625    N/A      N/A   N/A     N/A     N/A  45.0  AMSR2  25.0 -133.9   25.0 -133.9   25.2 -133.9 Analysis Plot     
     20200921 064817   -0.7      N/A  41.1% 211.09     .72  45.0 SSMI16  25.2 -134.6   25.2 -134.6   24.8 -135.1 Analysis Plot     
     20200921 083700   -1.1      N/A  39.7%  77.77    1.14  45.0 SSMI15  25.2 -134.6   25.2 -134.6   25.4 -135.1 Analysis Plot     
     20200921 094855   -8.0      N/A  21.9%  77.77    7.97  45.0 SSMI18  25.5 -134.8   25.5 -134.8   25.3 -135.0 Analysis Plot     
     20200921 201345   -3.2      N/A  34.2% 122.21    3.23  45.0 SSMI15  26.4 -135.1   26.4 -135.1   26.3 -135.5 Analysis Plot     
     20200921 212550  -16.6      N/A  13.7%  66.66   16.62  45.0 SSMI18  26.5 -135.1   26.5 -135.1   26.6 -135.2 Analysis Plot     
     20200922 035259   -8.5      N/A  32.9%  77.77    8.49  50.0    GMI  27.4 -135.1   27.4 -135.1   27.4 -135.5 Analysis Plot     
     20200922 074733    3.3      N/A  53.4%  77.77    3.30  60.0 SSMI16  28.0 -135.5   28.0 -135.5   28.0 -136.0 Analysis Plot     
     20200922 093613    7.2      N/A  38.4%  55.55    7.18  60.0 SSMI18  28.2 -135.5   28.2 -135.5   28.2 -136.0 Analysis Plot     
     20200922 133845   11.8      N/A  15.1%  55.55   11.81  60.0    GMI  28.9 -135.6   28.9 -135.6   29.5 -136.3 Analysis Plot     
     20200922 195459    3.8      N/A  35.6%  88.88    3.83  55.0 SSMI15  30.1 -136.3   30.1 -136.3   30.1 -137.4 Analysis Plot     
     20200922 211316    0.3      N/A  27.4% 111.10     .28  55.0 SSMI18  30.4 -136.4   30.4 -136.4   30.5 -137.4 Analysis Plot     
     20200923 042622   -4.0      N/A  52.1%  77.77    3.97  50.0  AMSR2  31.8 -138.4   31.8 -138.4   31.9 -139.1 Analysis Plot     
     20200923 074210  -21.0      N/A  87.7%  99.99    6.03  50.0 SSMI18  32.1 -138.7   32.1 -138.7   32.4 -140.0 Analysis Plot     
     20200923 080302   -3.4      N/A  79.5%  99.99    3.36  50.0 SSMI16  32.1 -138.7   32.1 -138.7   32.4 -139.6 Analysis Plot     
     20200923 193929 -930.0      N/A   N/A     N/A    0.00  55.0 SSMI16  33.3 -142.0   33.3 -142.0   33.0 -141.8 Analysis Plot     
     20200923 210038 -930.0      N/A   N/A     N/A    0.00  45.0 SSMI18  33.8 -142.6   33.8 -142.6   33.3 -141.7 Analysis Plot     
     20200924 074951 -930.0      N/A   N/A     N/A    0.00  35.0 SSMI16  33.3 -142.0   33.3 -142.0   32.7 -142.7 Analysis Plot     
     20200924 091052   -1.2      N/A   N/A   33.33    1.21  35.0 SSMI18  33.4 -142.0   33.4 -142.0   32.7 -142.6 Analysis Plot     
     20200924 190250   -0.6      N/A   N/A   77.77     .62  35.0 SSMI15  34.6 -142.4   34.6 -142.4   34.3 -142.5 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.