Tropical Storm 25E

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              
     20181102 231721   -0.6      N/A   N/A  166.65     .61  30.0 SSMI16  14.4  108.9   14.4  108.9   14.5  108.9 Analysis Plot     
     20181103 020936   -3.0      N/A   N/A  166.65    2.95  35.0 SSMI17  14.4  108.4   14.4  108.4   14.4  108.4 Analysis Plot     
     20181103 045850   -1.0      N/A  20.5% 144.43     .98  35.0    GMI  14.6  108.0   14.6  108.0   14.1  107.4 Analysis Plot     
     20181103 153239    N/A      N/A   N/A     N/A     N/A  40.0 SSMI18  15.2  107.1   15.2  107.1   15.3  106.2 Analysis Plot     
     20181104 004343 -930.0      N/A   N/A     N/A    0.00  45.0 SSMI18  15.8  105.9   15.8  105.9   15.3  105.5 Analysis Plot     
     20181104 015236   -2.0      N/A  19.2% 199.98    2.03  50.0 SSMI17  15.9  105.9   15.9  105.9   15.7  105.3 Analysis Plot     
     20181104 091440 -930.0      N/A   N/A     N/A    0.00  50.0  AMSR2  16.7  105.9   16.7  105.9   17.3  105.8 Analysis Plot     
     20181104 124725   -3.7      N/A  15.1%  33.33    3.72  50.0 SSMI17  16.9  105.9   16.9  105.9   17.6  105.2 Analysis Plot     
     20181104 153307   -4.4      N/A  30.1%  44.44    4.42  45.0 SSMI17  17.6  105.3   17.6  105.3   17.7  105.3 Analysis Plot     
     20181104 200624    N/A      N/A   N/A     N/A     N/A  45.0  AMSR2  18.0  105.4   18.0  105.4   18.3  106.0 Analysis Plot     
     20181105 003039    N/A      N/A   N/A     N/A     N/A  45.0 SSMI16  18.3  105.6   18.3  105.6   18.1  105.4 Analysis Plot     
     20181105 014230   -1.3      N/A  16.4%  44.44    1.26  45.0 SSMI17  18.4  105.6   18.4  105.6   18.3  105.4 Analysis Plot     
     20181105 044946   -4.1      N/A   N/A   44.44    4.08  45.0    GMI  18.6  105.8   18.6  105.8   18.3  105.7 Analysis Plot     
     20181105 081845   -2.7      N/A   2.7%  33.33    2.74  50.0  AMSR2  18.4  105.9   18.4  105.9   18.6  105.7 Analysis Plot     
     20181105 123411   -2.5      N/A   9.6%  88.88    2.46  50.0 SSMI16  18.5  106.1   18.5  106.1   18.3  105.7 Analysis Plot     
     20181105 152739   -3.8      N/A   N/A   99.99    3.84  50.0 SSMI17  18.5  106.2   18.5  106.2   18.4  106.1 Analysis Plot     
     20181106 001728   -5.1      N/A   N/A  111.10    5.15  45.0 SSMI16  19.1  107.1   19.1  107.1   18.9  107.0 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.