Hurricane 16L

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              
     20181027 064738   -4.0      N/A   N/A  199.98    4.01  40.0 SSMI15  27.2   46.7   27.2   46.7   26.9   46.4 Analysis Plot     
     20181027 103809   -3.9      N/A  12.3% 144.43    3.86  40.0 SSMI18  27.3   47.1   27.3   47.1   28.0   47.1 Analysis Plot     
     20181027 202702   -1.0      N/A  38.4%  66.66    1.00  50.0 SSMI18  27.0   50.3   27.0   50.3   26.4   50.6 Analysis Plot     
     20181027 220546   -0.7      N/A  42.5%  66.66     .74  50.0 SSMI18  26.9   50.8   26.9   50.8   26.3   50.6 Analysis Plot     
     20181027 235610   -1.1      N/A  41.1% 133.32    1.12  50.0 SSMI17  26.7   51.2   26.7   51.2   25.9   51.0 Analysis Plot     
     20181028 054819 -930.0      N/A   N/A     N/A    0.00  55.0  AMSR2  25.4   52.1   25.4   52.1   25.7   52.2 Analysis Plot     
     20181028 091948    7.0      N/A   N/A   55.55    7.01  55.0 SSMI16  25.0   52.5   25.0   52.5   25.5   52.3 Analysis Plot     
     20181028 102546 -930.0      N/A   N/A     N/A    0.00  55.0 SSMI18  25.0   52.7   25.0   52.7   25.3   52.5 Analysis Plot     
     20181028 121321    2.1      N/A   N/A   22.22    2.11  55.0 SSMI17  24.9   53.0   24.9   53.0   25.4   52.9 Analysis Plot     
     20181028 134745    2.8      N/A  13.7%  66.66    2.76  55.0    GMI  25.4   53.6   25.4   53.6   25.6   53.7 Analysis Plot     
     20181028 164411   45.8  >65 kts 100.0%  33.33   30.77  55.0  AMSR2  25.5   54.0   25.5   54.0   25.7   54.5 Analysis Plot     
     20181028 192021   12.1      N/A  83.6%  33.33   12.07  55.0 SSMI16  25.5   54.6   25.5   54.6   25.5   55.3 Analysis Plot     
     20181028 220024   11.1      N/A  79.5%  22.22   11.14  65.0 SSMI17  25.7   55.5   25.7   55.5   25.5   56.0 Analysis Plot     
     20181028 230952    9.9      N/A  45.2%  22.22    9.92  65.0 SSMI17  25.7   55.8   25.7   55.8   25.5   56.0 Analysis Plot     
     20181029 091254    4.4      N/A   9.6%  33.33    4.39  65.0 SSMI16  25.7   57.7   25.7   57.7   25.6   57.8 Analysis Plot     
     20181029 120000   30.5  >65 kts  94.5%  33.33   15.55  65.0 SSMI17  25.8   58.0   25.8   58.0   25.7   57.9 Analysis Plot     
     20181029 190710   13.2      N/A  49.3%  11.11   13.20  80.0 SSMI16  26.2   58.5   26.2   58.5   26.2   58.5 Analysis Plot     
     20181029 214729    7.4      N/A  68.5%  22.22    7.40  80.0 SSMI17  26.5   58.5   26.6   58.4   26.6   58.4 Analysis Plot     
     20181029 232712    8.2      N/A  75.3%  11.11    8.18  80.0 SSMI17  26.7   58.5   26.7   58.5   26.6   58.4 Analysis Plot     
     20181030 035204   52.3  >65 kts 100.0%  11.11   37.28  90.0    GMI  27.5   58.3   27.5   58.5   27.5   58.5 Analysis Plot     
     20181030 053415    N/A      N/A   N/A     N/A     N/A  90.0  AMSR2  27.9   58.2   27.9   58.2   27.9   58.2 Analysis Plot     
     20181030 074046   19.3      N/A 100.0%  11.11    4.26  90.0 SSMI15  28.3   58.3   28.1   58.5   28.1   58.5 Analysis Plot     
     20181030 114139    N/A      N/A   N/A     N/A     N/A  90.0 SSMI18  28.9   58.1   28.7   58.0   28.7   58.0 Analysis Plot     
     20181030 133653    3.2      N/A  15.1% 199.98    3.17  85.0    GMI  29.4   57.9   29.4   57.7   29.4   57.7 Analysis Plot     
     20181030 191839    1.8      N/A   1.4% 177.76    1.80  85.0 SSMI15  30.4   57.3   30.7   57.1   30.7   57.1 Analysis Plot     
     20181030 230509    1.5      N/A   N/A   66.66    1.51  75.0 SSMI18  31.7   56.3   31.7   56.3   31.3   56.3 Analysis Plot     
     20181031 030109    5.4      N/A   8.2%  44.44    5.42  70.0    GMI  32.8   55.2   32.3   55.3   32.3   55.3 Analysis Plot     
     20181031 072125    4.3      N/A   N/A   44.44    4.35  65.0 SSMI15  33.5   54.3   33.4   53.8   33.4   53.8 Analysis Plot     
     20181031 112855    3.5      N/A   N/A  122.21    3.55  65.0 SSMI18  34.6   53.2   34.6   53.2   34.5   52.7 Analysis Plot     
     20181031 113325    3.2      N/A   N/A  133.32    3.16  65.0 SSMI17  34.7   53.1   34.7   53.1   34.5   52.5 Analysis Plot     
     20181031 124347    3.8      N/A   N/A   44.44    3.83  65.0    GMI  35.5   52.5   35.7   52.1   35.7   52.1 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.