Tropical Depression 14E


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              
     20200827 001128   -1.2      N/A  24.7%  99.99    1.19  35.0 SSMI16  15.6  116.7   15.6  116.7   16.0  116.9 Analysis Plot     
     20200827 131809 -930.0      N/A   N/A     N/A    0.00  35.0 SSMI18  16.7  115.8   16.7  115.8   16.9  115.9 Analysis Plot     
     20200827 140148 -930.0      N/A   N/A     N/A    0.00  40.0 SSMI16  16.9  115.9   16.9  115.9   17.2  116.1 Analysis Plot     
     20200827 235818   -3.1      N/A  24.7%  77.77    3.05  45.0 SSMI16  17.3  115.7   17.3  115.7   17.4  115.8 Analysis Plot     
     20200828 092038   -8.7      N/A  32.9%  44.44    8.68  50.0  AMSR2  18.0  114.9   18.0  114.9   17.9  115.5 Analysis Plot     
     20200828 134846   -1.1      N/A  15.1%  55.55    1.10  50.0 SSMI16  18.2  114.8   18.2  114.8   18.2  115.5 Analysis Plot     
     20200828 234517   -2.8      N/A   9.6% 122.21    2.84  45.0 SSMI16  19.0  115.1   19.0  115.1   19.3  115.4 Analysis Plot     
     20200829 022622 -930.0      N/A   N/A     N/A    0.00  45.0 SSMI18  19.2  115.3   19.2  115.3   20.0  115.6 Analysis Plot     
     20200829 133550   -2.9      N/A  16.4% 133.32    2.91  40.0 SSMI16  20.1  115.0   20.1  115.0   20.1  114.9 Analysis Plot     
     20200829 205727    N/A      N/A   N/A     N/A     N/A  40.0  AMSR2  20.9  114.5   20.9  114.5   21.0  114.8 Analysis Plot     
     20200830 011144   -2.4      N/A   N/A   99.99    2.40  40.0 SSMI16  21.4  114.5   21.4  114.5   21.3  114.2 Analysis Plot     
     20200830 021419   -1.5      N/A   N/A   33.33    1.52  40.0 SSMI18  21.5  114.5   21.5  114.5   21.6  114.4 Analysis Plot     
     20200830 090728    N/A      N/A   N/A     N/A     N/A  30.0  AMSR2  22.4  114.0   22.4  114.0   22.4  114.2 Analysis Plot     
     20200830 131524   -2.3      N/A   2.7% 155.54    2.29  30.0 SSMI16  22.7  114.0   22.7  114.0   23.2  113.6 Analysis Plot     
     20200830 143344 -930.0      N/A   N/A     N/A    0.00  30.0 SSMI18  22.8  114.0   22.8  114.0   23.2  113.8 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.