Tropical Storm 04L

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              
     20180807 203446   -3.1      N/A   N/A  111.10    3.09  35.0 SSMI18  39.5   49.2   39.5   49.2   39.4   49.1 Analysis Plot     
     20180808 035949   -3.2      N/A  16.4%  88.88    3.19  35.0    GMI  40.4   49.1   40.4   49.1   40.0   49.4 Analysis Plot     
     20180808 050010   -4.3      N/A  27.4%  88.88    4.26  35.0  AMSR2  40.6   49.1   40.6   49.1   40.1   49.5 Analysis Plot     
     20180808 083435 -930.0      N/A   N/A     N/A    0.00  40.0 SSMI16  40.6   48.9   40.6   48.9   40.1   49.1 Analysis Plot     
     20180808 114208   -3.0      N/A   1.4%  66.66    3.04  40.0 SSMI17  41.0   48.7   41.0   48.7   40.4   49.1 Analysis Plot     
     20180808 201723 -930.0      N/A   N/A     N/A    0.00  35.0 SSMI18  41.7   47.5   41.7   47.5   41.0   49.1 Analysis Plot     
     20180808 214531   -6.0      N/A   6.8% 199.98    6.05  35.0 SSMI18  42.0   47.2   42.0   47.2   42.2   47.3 Analysis Plot     
     20180808 230854   -4.3      N/A   4.1% 188.87    4.32  35.0 SSMI17  42.2   47.0   42.2   47.0   42.3   47.2 Analysis Plot     
     20180809 030843 -930.0      N/A   N/A     N/A    0.00  45.0    GMI  42.8   46.5   42.8   46.5   42.7   46.7 Analysis Plot     
     20180809 070220   -6.6      N/A   N/A  155.54    6.62  40.0 SSMI15  43.4   45.5   43.4   45.5   43.3   45.8 Analysis Plot     
     20180809 112834   -2.8      N/A   1.4% 188.87    2.79  40.0 SSMI17  43.8   44.7   43.8   44.7   43.9   44.9 Analysis Plot     
     20180809 151223   -1.0      N/A   N/A   11.11     .99  40.0  AMSR2  44.4   43.3   44.4   43.3   44.5   42.9 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.