Hurricane 09L

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              
     20190913 200309   -2.6      N/A   8.2% 177.76    2.61  25.0 SSMI15  25.6   75.0   25.6   75.0   25.2   75.1 Analysis Plot     
     20190913 221240    N/A      N/A   N/A     N/A     N/A  25.0 SSMI16  25.6   75.0   25.6   75.0   25.4   74.7 Analysis Plot     
     20190914 000947 -930.0      N/A   N/A     N/A    0.00  25.0 SSMI18  25.7   75.2   25.7   75.2   25.1   75.9 Analysis Plot     
     20190914 005417   -0.7      N/A   N/A  211.09     .72  25.0 SSMI17  25.8   75.3   25.8   75.3   25.1   75.5 Analysis Plot     
     20190914 063146   -7.2      N/A   2.7%  66.66    7.17  30.0  AMSR2  26.0   75.7   26.0   75.7   26.0   75.4 Analysis Plot     
     20190914 084029   -0.1      N/A  11.0%  66.66     .13  35.0 SSMI15  26.3   76.0   26.3   76.0   26.5   76.1 Analysis Plot     
     20190914 101357   -1.6      N/A   N/A   33.33    1.62  35.0 SSMI16  26.3   76.0   26.3   76.0   26.3   75.6 Analysis Plot     
     20190914 121922   -2.5      N/A  13.7% 188.87    2.50  35.0 SSMI18  26.5   76.3   26.5   76.3   26.4   76.8 Analysis Plot     
     20190914 131325   -3.0      N/A   9.6% 211.09    2.97  35.0 SSMI17  26.6   76.3   26.6   76.3   26.2   76.6 Analysis Plot     
     20190914 195208   -4.6      N/A  17.8% 211.09    4.64  45.0 SSMI15  27.4   77.3   27.4   77.3   27.1   76.7 Analysis Plot     
     20190914 235734    N/A      N/A   N/A     N/A     N/A  45.0 SSMI18  27.6   77.4   27.6   77.4   27.3   76.7 Analysis Plot     
     20190915 004436   -0.9      N/A  41.1%  22.22     .87  45.0 SSMI17  27.7   77.5   27.7   77.5   27.5   77.1 Analysis Plot     
     20190915 071349 -930.0      N/A   N/A     N/A    0.00  50.0  AMSR2  28.2   77.7   28.2   77.7   27.5   79.1 Analysis Plot     
     20190915 120655   -7.2      N/A   N/A   33.33    7.18  50.0 SSMI18  28.5   77.8   28.5   77.8   28.5   77.7 Analysis Plot     
     20190915 170703    9.8      N/A  30.1%  66.66    9.85  55.0    GMI  29.1   77.9   28.9   78.0   28.9   78.0 Analysis Plot     
     20190915 181244    6.0      N/A  27.4%  77.77    5.96  55.0  AMSR2  29.1   77.9   29.0   77.9   29.0   77.9 Analysis Plot     
     20190915 234352   42.6  >65 kts 100.0%  55.55   27.60  60.0 SSMI18  29.4   78.0   29.4   78.0   29.1   77.9 Analysis Plot     
     20190916 115416   16.4      N/A  53.4%  55.55   16.43  75.0 SSMI18  29.8   77.2   29.8   77.2   29.7   76.9 Analysis Plot     
     20190916 233151   15.7      N/A  49.3%  33.33   15.69  80.0 SSMI18  30.2   75.7   30.1   75.7   30.1   75.7 Analysis Plot     
     20190917 070045   45.8  >65 kts 100.0%  99.99   30.81  80.0  AMSR2  30.5   74.5   30.5   74.6   30.5   74.6 Analysis Plot     
     20190917 114146   16.4      N/A  19.2%  66.66   16.42  80.0 SSMI18  30.7   74.1   30.7   74.1   30.5   74.0 Analysis Plot     
     20190917 180035   51.8  >65 kts 100.0%  66.66   36.82  85.0  AMSR2  30.8   73.1   30.9   73.0   30.9   73.0 Analysis Plot     
     20190917 232257   42.9  >65 kts 100.0%  77.77   27.85  90.0 SSMI18  31.1   72.0   31.0   72.0   31.0   72.0 Analysis Plot     
     20190918 060554    3.2      N/A  30.1%  88.88    3.16 100.0  AMSR2  31.5   70.2   31.5   70.1   31.5   70.1 Analysis Plot     
     20190918 113849    5.3      N/A  17.8%  99.99    5.33 100.0 SSMI18  31.8   69.2   31.7   69.1   31.7   69.1 Analysis Plot     
     20190918 230616    7.3      N/A  13.7% 188.87    7.31 105.0 SSMI18  33.2   65.9   32.9   65.2   32.9   65.2 Analysis Plot     
     20190918 234708    7.9      N/A  27.4% 199.98    7.86 105.0 SSMI17  33.3   65.7   33.0   64.9   33.0   64.9 Analysis Plot     
     20190919 120631    4.7      N/A   4.1% 211.09    4.71 110.0 SSMI17  35.7   61.7   35.5   60.8   35.5   60.8 Analysis Plot     
     20190919 191247    6.5      N/A   N/A  222.20    6.46 100.0 SSMI16  37.6   59.4   37.6   59.4   37.3   58.7 Analysis Plot     
     20190919 220610    2.3      N/A   N/A  166.65    2.32  90.0 SSMI18  38.7   58.6   38.2   58.9   38.2   58.9 Analysis Plot     
     20190919 233333    3.5      N/A   N/A   44.44    3.48  90.0 SSMI17  38.9   58.4   38.8   58.1   38.8   58.1 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.