Tropical Storm 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              
     20200730 063401 -930.0      N/A   N/A     N/A    0.00  45.0  AMSR2  16.5   68.0   16.5   68.0   16.3   69.7 Analysis Plot     
     20200730 082017   -2.8      N/A   4.1% 199.98    2.80  50.0 SSMI15  17.1   67.8   17.1   67.8   17.0   68.0 Analysis Plot     
     20200730 100206   -1.7      N/A   2.7% 188.87    1.70  50.0 SSMI16  17.2   67.9   17.2   67.9   16.9   67.9 Analysis Plot     
     20200730 110147   -0.3      N/A   5.5% 222.20     .34  50.0 SSMI18  17.4   68.2   17.4   68.2   17.4   68.7 Analysis Plot     
     20200730 172807 -930.0      N/A   N/A     N/A    0.00  50.0  AMSR2  18.4   69.3   18.4   69.3   18.6   69.2 Analysis Plot     
     20200730 204812 -930.0      N/A   N/A     N/A    0.00  50.0 SSMI18  19.3   70.3   19.0   70.6   19.0   70.6 Analysis Plot     
     20200730 223207 -930.0      N/A   N/A     N/A    0.00  50.0 SSMI18  19.6   70.8   19.0   70.5   19.0   70.5 Analysis Plot     
     20200731 211603 -930.0      N/A   N/A     N/A    0.00  65.0 SSMI16  22.5   75.6   22.5   75.6   21.9   75.9 Analysis Plot     
     20200731 225544   32.7  >65 kts  89.0%  33.33   17.66  65.0 SSMI16  22.8   75.9   22.8   75.9   22.5   75.6 Analysis Plot     
     20200801 093041    5.8      N/A   N/A   88.88    5.76  75.0 SSMI15  24.0   77.2   24.0   77.2   24.0   77.4 Analysis Plot     
     20200801 120811 -930.0      N/A   N/A     N/A    0.00  75.0 SSMI18  24.2   77.4   24.2   77.4   24.3   77.9 Analysis Plot     
     20200801 185503    7.1      N/A   4.1% 222.20    7.09  70.0  AMSR2  25.1   78.3   25.1   78.3   24.6   78.7 Analysis Plot     
     20200801 220435    1.0      N/A   3.0%  77.77     .99  60.0 SSMI18  25.1   78.7   25.1   78.7   24.8   79.1 Analysis Plot     
     20200801 224238    2.7      N/A  15.1% 155.54    2.75  60.0 SSMI16  25.2   78.8   25.2   78.8   24.7   78.4 Analysis Plot     
     20200801 234403    0.7      N/A  19.2% 111.10     .73  60.0 SSMI18  25.3   78.9   25.3   78.9   24.9   78.5 Analysis Plot     
     20200802 091456    0.4      N/A   9.6% 188.87     .41  55.0 SSMI15  26.4   79.6   26.4   79.6   26.1   79.6 Analysis Plot     
     20200802 105346    1.2      N/A   6.8% 222.20    1.20  55.0 SSMI16  26.4   79.6   26.4   79.6   26.2   79.9 Analysis Plot     
     20200802 115144    N/A      N/A   N/A     N/A     N/A  55.0 SSMI18  26.6   79.7   26.6   79.7   25.9   79.6 Analysis Plot     
     20200802 180130 -930.0      N/A   N/A     N/A    0.00  55.0  AMSR2  27.2   79.7   27.2   79.7   26.8   79.4 Analysis Plot     
     20200802 222935 -930.0      N/A   N/A     N/A    0.00  60.0 SSMI16  27.9   79.8   27.9   79.8   27.1   78.9 Analysis Plot     
     20200802 233147    0.0      N/A  39.7% 133.32     .01  60.0 SSMI18  28.0   79.9   28.0   79.9   27.8   79.1 Analysis Plot     
     20200803 105119    9.5      N/A  24.7%  77.77    9.49  60.0 SSMI16  29.9   79.9   29.9   79.9   29.9   79.2 Analysis Plot     
     20200803 114243    9.1      N/A  52.1%  99.99    9.08  60.0 SSMI18  30.0   79.9   30.0   79.9   30.1   79.4 Analysis Plot     
     20200803 184400    N/A      N/A   N/A     N/A     N/A  60.0  AMSR2  31.4   79.9   31.4   79.9   31.4   79.9 Analysis Plot     
     20200803 222215   12.2      N/A  61.6%  99.99   12.17  60.0 SSMI16  32.1   79.3   32.1   79.3   32.1   79.1 Analysis Plot     
     20200803 231932   18.3      N/A  58.9% 111.10   18.26  60.0 SSMI18  32.4   79.2   32.4   79.2   32.3   79.2 Analysis Plot     
     20200804 175109    3.5      N/A   N/A  122.21    3.47  60.0  AMSR2  40.1   75.5   40.1   75.5   40.2   74.6 Analysis Plot     
     20200804 200820 -930.0      N/A   N/A     N/A    0.00  55.0 SSMI15  42.5   74.3   42.5   74.3   41.6   73.6 Analysis Plot     
     20200804 221410 -930.0      N/A   N/A     N/A    0.00  55.0 SSMI16  42.8   74.1   42.8   74.1   41.9   73.6 Analysis Plot     
     20200804 230727 -930.0      N/A   N/A     N/A    0.00  55.0 SSMI18  43.3   73.9   43.3   73.9   42.1   72.9 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.