Tropical Depression 23W

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              
     20201029 175653 -930.0      N/A   N/A     N/A    0.00  25.0 SSMI15   9.3 -147.6    9.3 -147.6    8.0 -147.9 Analysis Plot     
     20201029 201011    N/A      N/A   N/A     N/A     N/A  25.0 SSMI18   9.5 -147.5    9.5 -147.5    9.2 -147.5 Analysis Plot     
     20201030 024027 -930.0      N/A   N/A     N/A    0.00  25.0    GMI  10.6 -145.5   10.6 -145.5   10.3 -145.9 Analysis Plot     
     20201030 064047 -930.0      N/A   N/A     N/A    0.00  30.0 SSMI15  11.5 -142.9   11.5 -142.9   12.3 -141.9 Analysis Plot     
     20201030 155501   -1.7      N/A   4.1%  22.22    1.66  25.0    GMI  12.4 -141.4   12.4 -141.4   12.5 -141.4 Analysis Plot     
     20201030 201401   -1.7      N/A   N/A  133.32    1.71  25.0 SSMI16  12.6 -140.5   12.6 -140.5   13.2 -141.3 Analysis Plot     
     20201031 063112   -8.7      N/A   N/A   33.33    8.72  30.0 SSMI15  14.4 -138.5   14.4 -138.5   14.5 -138.3 Analysis Plot     
     20201031 094820   -1.7      N/A   N/A   33.33    1.70  30.0 SSMI18  14.6 -138.3   14.6 -138.3   14.5 -137.7 Analysis Plot     
     20201031 200053 -930.0      N/A   N/A     N/A    0.00  30.0 SSMI16  15.0 -136.2   15.0 -136.2   15.8 -136.2 Analysis Plot     
     20201101 080132 -930.0      N/A   N/A     N/A    0.00  30.0 SSMI16  16.3 -132.6   16.3 -132.6   15.8 -133.4 Analysis Plot     
     20201101 093538 -930.0      N/A   N/A     N/A    0.00  30.0 SSMI18  16.5 -132.3   16.5 -132.3   16.5 -133.0 Analysis Plot     
     20201101 154514 -930.0      N/A   N/A     N/A    0.00  30.0    GMI  17.3 -130.9   17.3 -130.9   17.1 -131.0 Analysis Plot     
     20201101 211243   -2.0      N/A   1.6% 266.64    2.03  30.0 SSMI18  16.8 -129.5   16.8 -129.5   17.3 -129.3 Analysis Plot     
     20201101 212846 -930.0      N/A   N/A     N/A    0.00  30.0 SSMI16  16.9 -129.4   16.9 -129.4   17.3 -129.3 Analysis Plot     
     20201102 074821 -930.0      N/A   N/A     N/A    0.00  25.0 SSMI16  19.9 -127.9   19.9 -127.9   20.9 -126.9 Analysis Plot     
     20201102 205944   -0.3      N/A   5.5% 144.43     .35  35.0 SSMI18  20.0 -127.2   20.0 -127.2   20.0 -127.2 Analysis Plot     
     20201102 211609    N/A      N/A   N/A     N/A     N/A  35.0 SSMI16  20.0 -127.2   20.0 -127.2   19.9 -127.1 Analysis Plot     
     20201103 073519    N/A      N/A   N/A     N/A     N/A  35.0 SSMI16  19.9 -127.9   19.9 -127.9   19.8 -128.3 Analysis Plot     
     20201103 210307 -930.0      N/A   N/A     N/A    0.00  35.0 SSMI16  20.0 -128.9   20.0 -128.9   20.4 -129.8 Analysis Plot     
     20201104 072212 -930.0      N/A   N/A     N/A    0.00  45.0 SSMI16  19.9 -129.3   19.9 -129.3   20.8 -129.2 Analysis Plot     
     20201104 205222   -2.3      N/A  12.3%  88.88    2.33  50.0 SSMI16  20.0 -127.9   20.0 -127.9   20.5 -127.5 Analysis Plot     
     20201105 102606    6.0      N/A   N/A  111.10    6.03  55.0 SSMI18  20.3 -124.8   20.3 -124.8   20.4 -125.0 Analysis Plot     
     20201105 221343    N/A      N/A   N/A     N/A     N/A  45.0 SSMI18  20.9 -122.4   20.9 -122.4   21.1 -122.4 Analysis Plot     
     20201106 101323   -1.5      N/A  13.7%  22.22    1.53  45.0 SSMI18  21.6 -120.7   21.6 -120.7   21.6 -120.6 Analysis Plot     
     20201106 220052    6.9      N/A   8.2%  44.44    6.94  55.0 SSMI18  22.3 -119.4   22.3 -119.4   22.5 -119.5 Analysis Plot     
     20201107 015614    4.5      N/A   8.2%  77.77    4.53  55.0    GMI  22.4 -118.9   22.4 -118.9   22.7 -119.3 Analysis Plot     
     20201107 082445   -1.3      N/A   N/A   33.33    1.30  40.0 SSMI16  22.7 -119.1   22.7 -119.1   22.6 -118.9 Analysis Plot     
     20201107 101007   -3.6      N/A   N/A  122.21    3.58  40.0 SSMI18  22.7 -119.0   22.7 -119.0   22.8 -118.9 Analysis Plot     
     20201107 215204   -2.7      N/A   N/A  222.20    2.74  25.0 SSMI16  22.4 -117.9   22.4 -117.9   21.9 -117.5 Analysis Plot     
     20201108 081143   -0.5      N/A   N/A   66.66     .53  25.0 SSMI16  22.1 -117.2   22.1 -117.2   23.1 -116.3 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.