Tropical Storm 01L

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              
     20200516 210210    N/A      N/A   N/A     N/A     N/A  30.0 SSMI16  28.3   78.7   28.3   78.7   28.4   78.0 Analysis Plot     
     20200516 230637  -30.7      N/A  91.8%  44.44   15.66  30.0 SSMI18  28.6   78.5   28.6   78.5   28.9   77.4 Analysis Plot     
     20200517 073239 -930.0      N/A   N/A     N/A    0.00  30.0  AMSR2  30.0   77.4   30.0   77.4   29.8   77.6 Analysis Plot     
     20200517 091348  -10.3      N/A  11.0% 166.65   10.34  35.0 SSMI15  30.1   77.6   30.1   77.6   29.8   77.5 Analysis Plot     
     20200517 111621   -0.9      N/A   4.1%  55.55     .89  35.0 SSMI18  30.2   77.6   30.2   77.6   30.1   77.7 Analysis Plot     
     20200517 183132    N/A      N/A   N/A     N/A     N/A  35.0  AMSR2  30.9   77.3   30.9   77.3   30.9   77.3 Analysis Plot     
     20200517 205201   -3.1      N/A   N/A  188.87    3.06  35.0 SSMI16  31.4   77.1   31.4   77.1   30.9   77.1 Analysis Plot     
     20200517 225804   -2.8      N/A   N/A   66.66    2.77  40.0 SSMI18  31.7   77.1   31.7   77.1   31.3   77.1 Analysis Plot     
     20200518 074604 -930.0      N/A   N/A     N/A    0.00  40.0    GMI  33.3   76.3   33.3   76.3   33.2   76.3 Analysis Plot     
     20200518 103230   -1.2      N/A   6.8% 199.98    1.18  40.0 SSMI16  33.6   76.5   33.6   76.5   33.2   76.2 Analysis Plot     
     20200518 173826   -5.1      N/A  12.3% 144.43    5.13  40.0  AMSR2  35.4   74.8   35.4   74.8   35.5   74.7 Analysis Plot     
     20200518 201600   -6.5      N/A   N/A  144.43    6.47  45.0 SSMI15  36.1   73.9   36.1   73.9   35.7   74.3 Analysis Plot     
     20200518 224219   -5.1      N/A   N/A  222.20    5.09  45.0 SSMI18  36.2   73.7   36.2   73.7   35.9   74.0 Analysis Plot     
     20200519 085603   -6.4      N/A  13.7% 122.21    6.36  50.0 SSMI15  37.0   70.6   37.0   70.6   36.8   69.8 Analysis Plot     
     20200519 102858   -5.7      N/A   9.6% 166.65    5.69  50.0 SSMI16  37.0   70.4   37.0   70.4   36.7   69.5 Analysis Plot     
     20200519 110045   -5.7      N/A  12.3% 222.20    5.72  50.0 SSMI18  37.0   70.3   37.0   70.3   36.8   69.6 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.