Tropical Depression 08S

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              
     20210101 235415    N/A      N/A   N/A     N/A     N/A  40.0 SSMI15 -11.2  -72.3  -11.2  -72.3  -10.6  -71.4 Analysis Plot     
     20210102 132603   -7.0      N/A  21.9%  33.33    6.96  45.0 SSMI15 -10.5  -72.5  -10.5  -72.5  -10.8  -72.0 Analysis Plot     
     20210102 201742  -13.2      N/A  49.3%  44.44   13.24  45.0  AMSR2 -11.3  -72.7  -11.3  -72.7  -11.2  -72.2 Analysis Plot     
     20210102 232158    N/A      N/A   N/A     N/A     N/A  45.0 SSMI15 -11.4  -72.9  -11.4  -72.9  -11.1  -72.3 Analysis Plot     
     20210103 005843    N/A      N/A   N/A     N/A     N/A  45.0 SSMI18 -11.5  -73.0  -11.5  -73.0  -11.1  -72.5 Analysis Plot     
     20210103 083242    N/A      N/A   N/A     N/A     N/A  55.0  AMSR2 -11.9  -73.8  -11.9  -73.8  -11.9  -73.3 Analysis Plot     
     20210103 124544    4.5      N/A  50.7%  44.44    4.46  55.0 SSMI15 -12.2  -74.2  -12.2  -74.2  -12.0  -74.0 Analysis Plot     
     20210103 232030    N/A      N/A   N/A     N/A     N/A  55.0 SSMI15 -13.1  -75.3  -13.1  -75.3  -13.6  -75.5 Analysis Plot     
     20210104 004549    N/A      N/A   N/A     N/A     N/A  55.0 SSMI18 -13.3  -75.4  -14.1  -75.9  -14.1  -75.9 Analysis Plot     
     20210104 122813    3.0      N/A  43.8%  33.33    3.03  60.0 SSMI15 -15.0  -76.4  -15.0  -76.4  -15.0  -76.4 Analysis Plot     
     20210104 200618  -26.9      N/A  94.5%  44.44   11.94  50.0  AMSR2 -15.9  -76.3  -15.6  -76.3  -15.6  -76.3 Analysis Plot     
     20210104 230721 -930.0      N/A   N/A     N/A    0.00  50.0 SSMI15 -16.0  -76.3  -16.0  -76.3  -15.3  -77.5 Analysis Plot     
     20210105 003300  -51.7      N/A 100.0%  33.33   36.67  50.0 SSMI18 -16.1  -76.3  -15.8  -76.5  -15.8  -76.5 Analysis Plot     
     20210105 081914   16.2      N/A 100.0%  11.11    1.19  65.0  AMSR2 -16.6  -76.7  -16.6  -76.3  -16.6  -76.3 Analysis Plot     
     20210105 121220   15.8      N/A 100.0%  22.22     .78  65.0 SSMI15 -16.7  -76.6  -16.7  -76.6  -17.1  -76.4 Analysis Plot     
     20210105 205040 -930.0      N/A   N/A     N/A    0.00  70.0  AMSR2 -17.1  -75.3  -17.1  -75.3  -17.0  -75.6 Analysis Plot     
     20210106 001355    N/A      N/A   N/A     N/A     N/A  70.0 SSMI16 -17.2  -75.2  -17.2  -75.2  -17.5  -75.7 Analysis Plot     
     20210106 090209    N/A      N/A   N/A     N/A     N/A  50.0  AMSR2 -17.0  -75.0  -17.0  -75.0  -17.0  -75.0 Analysis Plot     
     20210106 123048 -930.0      N/A   N/A     N/A    0.00  50.0 SSMI18 -17.0  -74.5  -17.0  -74.5  -18.0  -74.0 Analysis Plot     
     20210107 000635    N/A      N/A   N/A     N/A     N/A  35.0 SSMI18 -16.7  -72.6  -16.7  -72.6  -16.8  -72.3 Analysis Plot     
     20210107 004418 -930.0      N/A   N/A     N/A    0.00  50.0 SSMI15 -17.0  -70.1  -17.0  -70.1  -16.9  -71.7 Analysis Plot     
     20210107 121805   -1.6      N/A   6.8% 166.65    1.60  35.0 SSMI18 -16.5  -70.5  -16.5  -70.5  -17.1  -70.6 Analysis Plot     
     20210107 130603 -930.0      N/A   N/A     N/A    0.00  35.0 SSMI15 -16.5  -70.4  -16.5  -70.4  -17.6  -69.5 Analysis Plot     
     20210107 203719   -6.0      N/A  53.4%  22.22    5.96  35.0  AMSR2 -16.4  -68.5  -16.9  -67.9  -16.9  -67.9 Analysis Plot     
     20210108 085046   -6.6      N/A   N/A   11.11    6.57  40.0  AMSR2 -17.2  -66.2  -17.2  -66.2  -18.0  -66.0 Analysis Plot     
     20210108 125411   -0.3      N/A   N/A   22.22     .31  40.0 SSMI15 -17.3  -65.7  -17.3  -65.7  -18.2  -65.0 Analysis Plot     
     20210108 212106    N/A      N/A   N/A     N/A     N/A  30.0  AMSR2 -18.2  -65.4  -18.2  -65.4  -18.3  -64.8 Analysis Plot     
     20210108 233650 -930.0      N/A   N/A     N/A    0.00  30.0    GMI -18.2  -65.2  -18.2  -65.2  -17.3  -64.8 Analysis Plot     
     20210109 012606   -0.3      N/A   8.2%  22.22     .29  30.0 SSMI18 -18.2  -65.1  -18.2  -65.1  -18.5  -64.4 Analysis Plot     
     20210109 093215   -7.6      N/A   N/A   99.99    7.58  25.0  AMSR2 -18.9  -62.9  -18.9  -62.9  -18.0  -63.4 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.