Tropical Depression 05B

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              
     20201201 201145 -930.0      N/A   N/A     N/A    0.00  35.0  AMSR2   8.3  -83.7    8.3  -83.7    8.1  -82.5 Analysis Plot     
     20201201 232636 -930.0      N/A   N/A     N/A    0.00  35.0 SSMI16   8.4  -83.5    8.4  -83.5    8.9  -84.4 Analysis Plot     
     20201201 234220    N/A      N/A   N/A     N/A     N/A  35.0 SSMI15   8.4  -83.5    8.4  -83.5    8.8  -83.3 Analysis Plot     
     20201202 113609   -0.6      N/A   N/A  222.20     .62  40.0 SSMI16   9.1  -81.8    9.1  -81.8    9.3  -82.2 Analysis Plot     
     20201202 230628   -7.3      N/A  11.0%  44.44    7.34  40.0 SSMI15   9.1  -80.9    9.1  -80.9    9.4  -80.8 Analysis Plot     
     20201203 004638   -1.1      N/A  15.4% 222.20    1.09  40.0 SSMI18   9.2  -80.8    9.2  -80.8    9.9  -81.0 Analysis Plot     
     20201203 074347 -930.0      N/A   N/A     N/A    0.00  35.0  AMSR2   9.2  -79.7    9.2  -79.7    9.6  -80.3 Analysis Plot     
     20201203 111601    N/A      N/A   N/A     N/A     N/A  35.0 SSMI18   9.2  -79.5    9.2  -79.5    8.9  -79.4 Analysis Plot     
     20201203 112307 -930.0      N/A   N/A     N/A    0.00  35.0 SSMI16   9.2  -79.5    9.2  -79.5    8.7  -80.2 Analysis Plot     
     20201203 212337    N/A      N/A   N/A     N/A     N/A  35.0    GMI   9.4  -79.6    9.4  -79.6    8.9  -79.5 Analysis Plot     
     20201204 003412   -0.8      N/A   4.1% 199.98     .85  35.0 SSMI18   9.4  -79.4    9.4  -79.4    9.3  -79.8 Analysis Plot     
     20201204 004412 -930.0      N/A   N/A     N/A    0.00  35.0 SSMI16   9.4  -79.4    9.4  -79.4    9.3  -79.8 Analysis Plot     
     20201204 082607   -1.0      N/A   N/A   11.11    1.04  35.0  AMSR2   9.3  -79.4    9.3  -79.4    8.9  -79.8 Analysis Plot     
     20201204 105908   -2.0      N/A   N/A  166.65    2.04  35.0 SSMI16   9.3  -79.4    9.3  -79.4    8.9  -79.9 Analysis Plot     
     20201204 111306   -2.3      N/A   N/A   77.77    2.25  35.0 SSMI18   9.3  -79.4    9.3  -79.4    8.9  -80.4 Analysis Plot     
     20201204 123105 -930.0      N/A   N/A     N/A    0.00  35.0 SSMI15   9.3  -79.3    9.3  -79.3   10.3  -78.9 Analysis Plot     
     20201204 204252   -2.0      N/A  52.1%  88.88    1.96  30.0  AMSR2   9.0  -79.3    9.0  -79.3    8.9  -79.8 Analysis Plot     
     20201205 003114 -930.0      N/A   N/A     N/A    0.00  30.0 SSMI16   9.0  -79.2    9.0  -79.2    8.9  -80.4 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.