Tropical Depression 16W

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              
     20201004 204849    N/A      N/A   N/A     N/A     N/A  25.0 SSMI16  22.6 -139.2   22.6 -139.2   22.2 -138.8 Analysis Plot     
     20201005 070844   -1.1      N/A   4.1% 333.30    1.09  35.0 SSMI16  23.0 -139.0   23.0 -139.0   22.9 -139.1 Analysis Plot     
     20201005 194320   -4.7      N/A  12.3% 177.76    4.65  40.0 SSMI15  23.6 -139.1   23.6 -139.1   23.5 -138.9 Analysis Plot     
     20201005 203551   -2.0      N/A  21.9% 166.65    1.96  40.0 SSMI16  23.6 -139.1   23.6 -139.1   23.4 -138.9 Analysis Plot     
     20201006 035239   -3.7      N/A  21.9% 144.43    3.73  45.0  AMSR2  24.0 -138.1   24.2 -138.4   24.2 -138.4 Analysis Plot     
     20201006 074432   -8.3      N/A   8.2% 155.54    8.35  45.0 SSMI15  24.1 -137.8   24.1 -137.8   24.3 -138.3 Analysis Plot     
     20201006 084837   -7.2      N/A  12.3% 144.43    7.15  45.0 SSMI16  24.3 -138.1   24.3 -138.1   24.3 -138.2 Analysis Plot     
     20201006 193706    2.6      N/A  11.0%  88.88    2.59  55.0 SSMI15  24.8 -136.8   24.8 -136.8   25.2 -136.6 Analysis Plot     
     20201006 202243    1.7      N/A  15.1%  55.55    1.66  55.0 SSMI16  24.8 -136.7   24.8 -136.7   25.1 -136.4 Analysis Plot     
     20201007 043612    6.1      N/A   9.6%  77.77    6.07  60.0  AMSR2  25.4 -135.4   25.8 -134.9   25.8 -134.9 Analysis Plot     
     20201007 082322 -930.0      N/A   N/A     N/A    0.00  65.0 SSMI16  26.1 -134.6   26.0 -134.5   26.0 -134.5 Analysis Plot     
     20201007 094742   13.2      N/A  31.5%  77.77   13.20  65.0 SSMI18  26.2 -134.4   25.9 -134.2   25.9 -134.2 Analysis Plot     
     20201007 212532   11.7      N/A  46.6% 133.32   11.67  70.0 SSMI18  27.5 -132.9   27.8 -133.0   27.8 -133.0 Analysis Plot     
     20201008 093603   43.4  >65 kts 100.0% 111.10   28.40  80.0 SSMI18  29.0 -132.8   28.9 -133.3   28.9 -133.3 Analysis Plot     
     20201008 212248    1.2      N/A   2.7% 111.10    1.24  80.0 SSMI18  30.5 -133.7   30.5 -133.7   29.9 -133.3 Analysis Plot     
     20201009 042453    4.2      N/A  16.4%  99.99    4.16  75.0  AMSR2  30.5 -133.5   30.5 -133.5   30.5 -134.0 Analysis Plot     
     20201009 092320 -930.0      N/A   N/A     N/A    0.00  70.0 SSMI18  30.9 -133.8   30.9 -133.8   30.3 -134.5 Analysis Plot     
     20201009 163008    4.7      N/A   2.7% 144.43    4.70  55.0  AMSR2  31.3 -134.8   31.3 -134.8   31.2 -134.8 Analysis Plot     
     20201009 210028   -2.7      N/A   N/A  155.54    2.67  50.0 SSMI18  31.5 -135.2   31.5 -135.2   31.5 -135.4 Analysis Plot     
     20201009 212425 -930.0      N/A   N/A     N/A    0.00  50.0 SSMI16  31.5 -135.2   31.5 -135.2   31.8 -134.9 Analysis Plot     
     20201010 091036   -1.5      N/A  14.1% 255.53    1.49  50.0 SSMI18  32.1 -137.1   32.1 -137.1   31.5 -137.7 Analysis Plot     
     20201010 171333 -930.0      N/A   N/A     N/A    0.00  50.0  AMSR2  31.8 -138.8   31.8 -138.8   32.4 -138.9 Analysis Plot     
     20201010 204752   -2.7      N/A   9.6% 111.10    2.74  50.0 SSMI18  32.2 -139.7   32.2 -139.7   32.4 -139.6 Analysis Plot     
     20201011 041314   -4.9      N/A   5.5% 211.09    4.88  40.0  AMSR2  32.0 -140.8   32.0 -140.8   32.1 -140.9 Analysis Plot     
     20201011 085757   -3.4      N/A   8.2% 199.98    3.38  35.0 SSMI18  31.6 -141.5   31.6 -141.5   31.7 -141.1 Analysis Plot     
     20201011 161710   -5.7      N/A   N/A   22.22    5.66  35.0  AMSR2  30.9 -142.3   30.9 -142.3   31.0 -141.6 Analysis Plot     
     20201011 193347 -930.0      N/A   N/A     N/A    0.00  35.0 SSMI15  30.5 -142.2   30.5 -142.2   31.4 -142.3 Analysis Plot     
     20201011 203516   -0.6      N/A   N/A   11.11     .61  35.0 SSMI18  30.5 -142.2   30.5 -142.2   30.8 -142.2 Analysis Plot     
     20201011 213308 -930.0      N/A   N/A     N/A    0.00  35.0    GMI  30.4 -142.2   30.4 -142.2   30.5 -142.2 Analysis Plot     
     20201012 031748   -9.0      N/A   N/A  222.20    9.04  25.0  AMSR2  30.1 -142.3   30.1 -142.3   29.8 -142.5 Analysis Plot     
     20201012 082131   -2.5      N/A   N/A  177.76    2.47  25.0 SSMI18  29.3 -142.4   29.3 -142.4   29.4 -142.4 Analysis Plot     
     20201012 191814   -3.3      N/A   N/A   22.22    3.25  25.0 SSMI15  28.6 -143.0   28.6 -143.0   28.9 -143.0 Analysis Plot     
     20201012 202250   -1.7      N/A   N/A   44.44    1.68  25.0 SSMI18  28.6 -143.0   28.6 -143.0   29.0 -143.3 Analysis Plot     
     20201012 204556   -1.7      N/A   N/A  133.32    1.67  25.0 SSMI16  28.6 -143.0   28.6 -143.0   28.8 -143.2 Analysis Plot     
     20201013 035935   -6.9      N/A   N/A  144.43    6.90  25.0  AMSR2  28.3 -143.4   28.3 -143.4   28.2 -143.7 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.