Tropical Depression 25W

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              
     20201109 093443  -11.9      N/A   9.6%  44.44   11.88  25.0 SSMI18  12.2 -130.7   12.2 -130.7   12.1 -131.1 Analysis Plot     
     20201109 133038   -2.4      N/A   8.2% 177.76    2.37  25.0    GMI  13.1 -130.1   13.1 -130.1   13.0 -129.9 Analysis Plot     
     20201109 212616   -2.3      N/A  15.1% 133.32    2.31  30.0 SSMI16  12.9 -129.1   12.9 -129.1   13.1 -128.6 Analysis Plot     
     20201110 075019   -4.0      N/A  17.8% 144.43    3.98  40.0 SSMI15  13.5 -127.9   13.5 -127.9   13.8 -127.9 Analysis Plot     
     20201110 205955 -930.0      N/A   N/A     N/A    0.00  60.0 SSMI18  14.7 -125.5   14.8 -125.3   14.8 -125.3 Analysis Plot     
     20201110 211314    9.8      N/A  16.4%  99.99    9.83  60.0 SSMI16  14.7 -125.5   14.8 -125.2   14.8 -125.2 Analysis Plot     
     20201111 091007 -930.0      N/A   N/A     N/A    0.00  80.0 SSMI18  14.7 -123.0   14.7 -123.0   14.3 -123.3 Analysis Plot     
     20201111 132115 -930.0      N/A   N/A     N/A    0.00  90.0    GMI  14.6 -122.6   14.8 -122.5   14.8 -122.5 Analysis Plot     
     20201111 201138 -930.0      N/A   N/A     N/A    0.00  90.0 SSMI15  14.9 -121.4   14.9 -121.4   14.4 -121.1 Analysis Plot     
     20201111 210028 -930.0      N/A   N/A     N/A    0.00  95.0 SSMI16  15.0 -120.8   15.3 -120.9   15.3 -120.9 Analysis Plot     
     20201112 004712    8.5      N/A  35.6% 122.21    8.51  95.0    GMI  15.1 -119.7   15.6 -119.6   15.6 -119.6 Analysis Plot     
     20201112 091103    2.6      N/A  22.2% 111.10    2.56  75.0 SSMI16  15.2 -118.1   15.1 -118.0   15.1 -118.0 Analysis Plot     
     20201112 214449    7.2      N/A  28.8%  77.77    7.21  75.0 SSMI18  15.2 -115.9   15.4 -115.9   15.4 -115.9 Analysis Plot     
     20201113 085833   43.2  >65 kts 100.0%  77.77   28.15  75.0 SSMI16  15.5 -114.0   15.4 -114.0   15.4 -114.0 Analysis Plot     
     20201113 102604   41.4  >65 kts 100.0%  77.77   26.39  75.0 SSMI18  15.5 -113.7   15.6 -114.1   15.6 -114.1 Analysis Plot     
     20201113 184413 -930.0      N/A   N/A     N/A    0.00 115.0  AMSR2  15.6 -112.2   15.6 -112.2   15.9 -112.1 Analysis Plot     
     20201113 221413   41.7  >65 kts 100.0%  77.77   26.67 115.0 SSMI18  15.7 -111.8   15.7 -111.9   15.7 -111.9 Analysis Plot     
     20201113 221555   25.0  >65 kts  65.8%  77.77   25.03 115.0 SSMI16  15.7 -111.8   15.7 -111.8   15.7 -111.8 Analysis Plot     
     20201114 053546   30.1  >65 kts  71.2%  77.77   30.14 105.0  AMSR2  16.0 -110.4   15.9 -110.4   15.9 -110.4 Analysis Plot     
     20201114 084710   14.3      N/A  11.0%  55.55   14.32 105.0 SSMI16  16.1 -109.9   16.0 -110.1   16.0 -110.1 Analysis Plot     
     20201114 212457 -930.0      N/A   N/A     N/A    0.00  80.0 SSMI15  16.9 -108.1   16.9 -108.1   15.7 -108.0 Analysis Plot     
     20201114 220212    1.6      N/A  21.9%  77.77    1.59  80.0 SSMI16  16.9 -108.0   16.9 -108.0   16.9 -108.0 Analysis Plot     
     20201115 061814    3.7      N/A   N/A   33.33    3.67  80.0  AMSR2  17.5 -107.1   17.5 -107.1   17.6 -106.6 Analysis Plot     
     20201115 100041 -930.0      N/A   N/A     N/A    0.00  70.0 SSMI18  17.8 -106.1   17.8 -106.1   17.9 -105.3 Analysis Plot     
     20201115 183020 -930.0      N/A   N/A     N/A    0.00  70.0  AMSR2  18.4 -104.7   18.4 -104.7   18.4 -104.1 Analysis Plot     
     20201115 231959 -930.0      N/A   N/A     N/A    0.00  70.0 SSMI18  18.5 -104.2   18.5 -104.2   18.2 -103.5 Analysis Plot     
     20201116 002554 -930.0      N/A   N/A     N/A    0.00  70.0    GMI  18.5 -104.0   18.5 -104.0   18.6 -103.1 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.