Tropical Storm 04E

Passive Microwave (PMW) Intensity Information
Hurricane Intensity Estimation (HIE) Algorithm
Version 8.2.1


         Overpass     Inten           Ring    Ring          Wind           Forecast        Final        Target  
       Date    Time   Score  Meaning   Pct    Diam  BTdiff   Est   Sat    Lat    Lon    Lat    Lon    Lat    Lon              
     20170625 005400   -3.2      N/A   N/A  177.76    3.16  25.0 SSMI17  14.2   99.8   14.2   99.8   14.3   99.8 Analysis Plot     
     20170625 114700   -3.5      N/A  57.5% 122.21    3.48  35.0 SSMI16  14.8  101.1   14.9  101.3   14.9  101.3 Analysis Plot     
     20170625 133000   -6.1      N/A  43.8% 155.54    6.09  45.0 SSMI17  14.9  101.6   15.2  101.9   15.2  101.9 Analysis Plot     
     20170625 164628   -3.8      N/A  46.6% 133.32    3.75  45.0    GMI  15.1  102.1   15.5  102.6   15.5  102.6 Analysis Plot     
     20170626 004200 -930.0      N/A   N/A     N/A    0.00  45.0 SSMI17  16.0  103.5   16.0  103.5   15.8  103.8 Analysis Plot     
     20170626 004300 -930.0      N/A   N/A     N/A    0.00  55.0 SSMI17  16.3  104.1   16.3  104.1   15.9  103.8 Analysis Plot     
     20170626 060313   10.7      N/A  26.0%  33.33   10.67  55.0    GMI  16.7  104.8   16.6  104.8   16.6  104.8 Analysis Plot     
     20170626 102248   47.4  >65 kts 100.0%  99.99   32.41  65.0 SSMI15  16.8  105.5   16.9  105.3   16.9  105.3 Analysis Plot     
     20170626 131600   38.6  >65 kts 100.0%  66.66   23.59  75.0 SSMI17  17.2  106.1   17.2  106.0   17.2  106.0 Analysis Plot     
     20170626 200605   55.5  >65 kts 100.0%  55.55   40.45  80.0  AMSR2  17.7  107.1   17.8  107.1   17.8  107.1 Analysis Plot     
     20170627 004800   42.2  >65 kts 100.0%  44.44   27.21  80.0 SSMI16  17.9  107.6   17.9  107.6   17.9  107.6 Analysis Plot     
     20170627 142500    2.4      N/A   N/A   44.44    2.40  65.0 SSMI18  19.3  110.2   19.3  110.2   19.3  110.3 Analysis Plot     
     20170627 163532    2.6      N/A   N/A   33.33    2.56  65.0    GMI  19.4  110.4   19.4  110.4   19.4  110.7 Analysis Plot     
     20170627 204857    1.4      N/A   N/A  122.21    1.44  55.0  AMSR2  19.6  111.3   19.6  111.3   19.2  111.2 Analysis Plot     
     20170628 015700   -7.2      N/A   N/A  211.09    7.22  45.0 SSMI17  19.7  112.3   19.7  112.3   19.1  112.3 Analysis Plot     
     20170628 055346   -1.7      N/A   N/A   66.66    1.74  45.0    GMI  19.8  112.7   19.8  112.7   19.5  112.8 Analysis Plot     
     20170628 090004   -3.2      N/A   N/A   11.11    3.20  35.0  AMSR2  19.8  113.2   19.8  113.2   19.8  113.2 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.