Tropical Depression 23S

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              
     20190405 084242   -3.6      N/A   N/A  133.32    3.61  35.0 SSMI18 -12.1 -127.1  -12.1 -127.1  -11.8 -127.0 Analysis Plot     
     20190405 095827   -3.1      N/A   9.6% 133.32    3.06  35.0 SSMI17 -12.1 -126.9  -12.1 -126.9  -12.1 -126.9 Analysis Plot     
     20190405 104843 -930.0      N/A   N/A     N/A    0.00  35.0 SSMI18 -12.1 -126.8  -12.1 -126.8  -11.7 -126.3 Analysis Plot     
     20190405 120349 -930.0      N/A   N/A     N/A    0.00  35.0 SSMI17 -12.1 -126.6  -12.1 -126.6  -12.6 -125.7 Analysis Plot     
     20190405 164745    N/A      N/A   N/A     N/A     N/A  35.0  AMSR2 -11.9 -125.7  -12.2 -125.4  -12.2 -125.4 Analysis Plot     
     20190405 195851    N/A      N/A   N/A     N/A     N/A  35.0 SSMI16 -12.0 -125.4  -11.7 -125.7  -11.7 -125.7 Analysis Plot     
     20190406 050304    N/A      N/A   N/A     N/A     N/A  40.0  AMSR2 -11.9 -124.4  -11.9 -124.4  -12.0 -125.3 Analysis Plot     
     20190406 080532   -1.5      N/A  17.8% 122.21    1.47  40.0 SSMI15 -11.9 -124.2  -11.9 -124.2  -12.4 -124.8 Analysis Plot     
     20190406 082038    N/A      N/A   N/A     N/A     N/A  45.0 SSMI16 -12.3 -124.0  -12.3 -124.0  -13.5 -123.2 Analysis Plot     
     20190406 173059    N/A      N/A   N/A     N/A     N/A  45.0  AMSR2 -12.8 -122.6  -12.8 -122.6  -13.0 -121.5 Analysis Plot     
     20190406 232755    N/A      N/A   N/A     N/A     N/A  45.0 SSMI18 -13.3 -121.0  -13.3 -121.0  -13.2 -120.0 Analysis Plot     
     20190407 054524   -0.2      N/A  61.6%  66.66     .16  45.0  AMSR2 -13.0 -119.7  -13.0 -119.7  -13.6 -119.2 Analysis Plot     
     20190407 102337    N/A      N/A   N/A     N/A     N/A  45.0 SSMI18 -13.1 -119.3  -13.1 -119.3  -13.7 -118.3 Analysis Plot     
     20190407 114646    N/A      N/A   N/A     N/A     N/A  45.0 SSMI17 -13.2 -119.1  -13.2 -119.1  -13.6 -118.2 Analysis Plot     
     20190407 201437    N/A      N/A   N/A     N/A     N/A  50.0 SSMI15 -13.7 -117.9  -13.7 -117.9  -14.3 -117.0 Analysis Plot     
     20190407 212224    N/A      N/A   N/A     N/A     N/A  50.0 SSMI16 -13.9 -117.5  -14.4 -117.1  -14.4 -117.1 Analysis Plot     
     20190407 231324   -4.1      N/A  54.8%  22.22    4.08  50.0 SSMI18 -14.1 -117.2  -14.6 -117.1  -14.6 -117.1 Analysis Plot     
     20190408 093624   17.5      N/A  79.5%  22.22   17.46  55.0 SSMI15 -15.5 -116.3  -15.5 -116.3  -15.7 -116.2 Analysis Plot     
     20190408 101109    0.9      N/A  75.3%  22.22     .92  55.0 SSMI18 -15.6 -116.1  -15.6 -116.1  -15.9 -116.1 Analysis Plot     
     20190408 112345    N/A      N/A   N/A     N/A     N/A  55.0 SSMI17 -15.7 -116.0  -15.7 -116.0  -16.1 -116.0 Analysis Plot     
     20190408 172017   23.6  >65 kts 100.0%  22.22    8.61  60.0  AMSR2 -16.5 -115.3  -16.5 -115.3  -16.7 -115.1 Analysis Plot     
     20190408 193420    2.6      N/A   5.5% 188.87    2.56  60.0 SSMI15 -16.5 -115.2  -16.5 -115.2  -16.9 -115.0 Analysis Plot     
     20190408 210039    N/A      N/A   N/A     N/A     N/A  65.0 SSMI16 -16.8 -115.0  -17.0 -115.2  -17.0 -115.2 Analysis Plot     
     20190409 092027    N/A      N/A   N/A     N/A     N/A  45.0 SSMI16 -16.2 -114.1  -16.2 -114.1  -16.9 -114.6 Analysis Plot     
     20190409 095835 -930.0      N/A   N/A     N/A    0.00  45.0 SSMI18 -16.2 -114.0  -16.2 -114.0  -16.4 -114.0 Analysis Plot     
     20190409 111022 -930.0      N/A   N/A     N/A    0.00  45.0 SSMI17 -16.2 -113.9  -16.2 -113.9  -16.5 -113.9 Analysis Plot     
     20190409 204731   -2.2      N/A  17.8% 133.32    2.15  40.0 SSMI16 -16.9 -112.8  -16.9 -112.8  -16.8 -113.4 Analysis Plot     
     20190410 061514   -5.2      N/A   N/A  199.98    5.20  35.0  AMSR2 -17.0 -111.4  -17.0 -111.4  -16.9 -111.7 Analysis Plot     
     20190410 090723   -2.1      N/A   N/A  155.54    2.12  35.0 SSMI16 -17.1 -111.1  -17.1 -111.1  -17.0 -110.8 Analysis Plot     
     20190410 230520    N/A      N/A   N/A     N/A     N/A  35.0 SSMI18 -17.5 -109.0  -17.5 -109.0  -17.4 -109.0 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.