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              
     20180817 211215 -930.0      N/A   N/A     N/A    0.00  25.0 SSMI17  13.4 -155.4   13.4 -155.4   13.9 -155.9 Analysis Plot     
     20180817 213048   -4.7      N/A  43.8%  66.66    4.66  25.0    GMI  13.4 -155.2   13.4 -155.2   13.6 -154.6 Analysis Plot     
     20180818 032400    N/A      N/A   N/A     N/A     N/A  30.0  AMSR2  13.9 -154.3   13.9 -154.3   13.9 -154.3 Analysis Plot     
     20180818 081205   -1.8      N/A  17.8% 122.21    1.80  30.0 SSMI18  14.1 -153.8   14.1 -153.8   14.5 -153.9 Analysis Plot     
     20180818 170005   -2.4      N/A  19.2% 166.65    2.44  35.0 SSMI15  14.9 -152.6   14.9 -152.6   15.0 -152.8 Analysis Plot     
     20180819 055756 -930.0      N/A   N/A     N/A    0.00  40.0 SSMI16  15.7 -151.3   15.7 -151.3   15.9 -151.2 Analysis Plot     
     20180819 091636 -930.0      N/A   N/A     N/A    0.00  45.0 SSMI18  15.8 -150.7   15.8 -150.7   15.8 -150.5 Analysis Plot     
     20180819 095444 -930.0      N/A   N/A     N/A    0.00  45.0    GMI  16.0 -150.4   16.0 -150.4   15.8 -150.4 Analysis Plot     
     20180819 104647   -5.5      N/A  13.8% 255.53    5.54  45.0 SSMI17  16.0 -150.5   16.0 -150.5   15.9 -150.5 Analysis Plot     
     20180819 192502    N/A      N/A   N/A     N/A     N/A  55.0 SSMI16  16.6 -149.4   16.6 -149.4   16.3 -150.0 Analysis Plot     
     20180819 211905   11.2      N/A  24.7%  33.33   11.21  60.0 SSMI18  17.0 -149.1   17.0 -149.1   16.8 -149.6 Analysis Plot     
     20180819 212016   13.4      N/A  20.5%  88.88   13.38  60.0    GMI  17.0 -148.9   17.0 -148.9   16.9 -149.5 Analysis Plot     
     20180819 222331 -930.0      N/A   N/A     N/A    0.00  60.0 SSMI17  17.0 -148.9   17.0 -148.9   16.9 -149.2 Analysis Plot     
     20180820 054444    4.6      N/A  74.0%  55.55    4.64  65.0 SSMI16  17.5 -148.2   17.5 -148.2   17.1 -148.4 Analysis Plot     
     20180820 070003   22.3  >65 kts  86.3%  55.55    7.30  65.0 SSMI15  17.5 -148.3   17.5 -148.3   17.1 -148.4 Analysis Plot     
     20180820 090146 -930.0      N/A   N/A     N/A    0.00  65.0 SSMI18  18.1 -147.5   18.1 -147.5   18.5 -147.6 Analysis Plot     
     20180820 103255    2.3      N/A   6.8% 199.98    2.29  65.0 SSMI17  18.3 -147.2   18.3 -147.2   18.3 -147.3 Analysis Plot     
     20180820 175432    N/A      N/A   N/A     N/A     N/A  65.0 SSMI15  19.4 -146.5   19.4 -146.5   19.4 -146.5 Analysis Plot     
     20180820 191145    N/A      N/A   N/A     N/A     N/A  65.0 SSMI16  19.6 -146.1   19.5 -146.4   19.5 -146.4 Analysis Plot     
     20180820 210656    6.6      N/A  32.9%  44.44    6.64  65.0 SSMI18  19.8 -145.7   19.6 -145.8   19.6 -145.8 Analysis Plot     
     20180820 221100    9.6      N/A  41.1% 177.76    9.61  65.0 SSMI17  20.0 -145.5   19.7 -145.8   19.7 -145.8 Analysis Plot     
     20180821 035639   17.7      N/A  47.9%  55.55   17.72  65.0  AMSR2  20.6 -144.4   20.8 -144.5   20.8 -144.5 Analysis Plot     
     20180821 064622   15.4      N/A  27.4%  66.66   15.43  65.0 SSMI15  20.7 -144.2   21.1 -144.3   21.1 -144.3 Analysis Plot     
     20180821 103033   19.8      N/A  26.0%  55.55   19.77  75.0 SSMI17  21.8 -143.3   21.6 -143.4   21.6 -143.4 Analysis Plot     
     20180821 160623   28.4  >65 kts  61.6%  55.55   28.42  80.0  AMSR2  22.9 -141.7   22.8 -141.7   22.8 -141.7 Analysis Plot     
     20180821 210846 -930.0      N/A   N/A     N/A    0.00  90.0    GMI  23.6 -140.6   23.6 -140.6   23.6 -140.6 Analysis Plot     
     20180822 071248   12.8      N/A   5.5%  44.44   12.80 110.0 SSMI16  25.5 -138.6   25.6 -138.5   25.6 -138.5 Analysis Plot     
     20180822 102858    4.5      N/A   N/A   44.44    4.51 110.0    GMI  26.5 -137.9   26.5 -137.7   26.5 -137.7 Analysis Plot     
     20180822 105410   11.5      N/A   N/A   33.33   11.47 110.0 SSMI18  26.4 -138.1   26.0 -138.1   26.0 -138.1 Analysis Plot     
     20180822 164752    6.3      N/A   2.7%  55.55    6.27 100.0  AMSR2  28.3 -136.6   28.1 -136.1   28.1 -136.1 Analysis Plot     
     20180822 201736   11.9      N/A   N/A   44.44   11.90  90.0 SSMI16  28.9 -135.8   28.8 -135.7   28.8 -135.7 Analysis Plot     
     20180822 222118   13.3      N/A   6.8%  44.44   13.29  90.0 SSMI18  29.6 -135.5   29.3 -135.4   29.3 -135.4 Analysis Plot     
     20180822 232412    3.9      N/A   N/A   44.44    3.94  90.0 SSMI17  29.9 -135.4   29.5 -135.3   29.5 -135.3 Analysis Plot     
     20180823 034756    1.6      N/A   4.1%  33.33    1.55  85.0  AMSR2  31.0 -134.8   31.2 -134.6   31.2 -134.6 Analysis Plot     
     20180823 064705    5.8      N/A   2.7%  77.77    5.85  85.0 SSMI16  31.9 -134.5   32.1 -134.4   32.1 -134.4 Analysis Plot     
     20180823 075213 -930.0      N/A   N/A     N/A    0.00  85.0 SSMI15  31.7 -134.6   31.7 -134.6   31.7 -133.8 Analysis Plot     
     20180823 103210    7.5      N/A   9.6%  99.99    7.48  80.0 SSMI18  33.2 -134.5   32.9 -134.3   32.9 -134.3 Analysis Plot     
     20180823 185346    2.1      N/A   N/A  144.43    2.13  75.0 SSMI15  36.4 -135.4   36.4 -135.4   37.0 -135.1 Analysis Plot     
     20180823 220844    5.7      N/A   N/A  188.87    5.65  55.0 SSMI18  37.7 -135.8   37.7 -135.8   38.3 -135.6 Analysis Plot     
     20180823 231045    6.7      N/A   N/A  122.21    6.67  55.0 SSMI17  38.1 -135.9   38.1 -135.9   38.5 -135.6 Analysis Plot     
     20180824 102323   -1.3      N/A   N/A  266.64    1.25  45.0    GMI  41.4 -139.7   41.4 -139.7   41.2 -139.7 Analysis Plot     
     20180824 182812 -930.0      N/A   N/A     N/A    0.00  45.0    GMI  42.7 -143.5   42.7 -143.5   42.7 -144.1 Analysis Plot     
     20180824 195114   -1.4      N/A   N/A  233.31    1.38  45.0 SSMI16  42.7 -143.8   42.7 -143.8   43.3 -143.9 Analysis Plot     
     20180824 215652   -1.0      N/A   N/A  255.53    1.00  45.0 SSMI18  42.9 -144.9   42.9 -144.9   43.1 -145.3 Analysis Plot     
     20180824 225724   -0.7      N/A   N/A  233.31     .65  45.0 SSMI17  43.0 -145.5   43.0 -145.5   42.6 -146.5 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.