Tropical Depression 06W


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              
     20220729 041320   -2.4      N/A  26.0%  11.11    2.38  30.0  AMSR2  28.5 -132.7   28.5 -132.7   28.9 -133.0 Analysis Plot     
     20220729 092813   -3.3      N/A  16.4% 111.10    3.29  30.0 SSMI18  29.3 -131.1   29.3 -131.1   29.8 -131.4 Analysis Plot     
     20220729 101512   -0.5      N/A  13.7% 199.98     .52  30.0 SSMI16  29.4 -130.8   29.4 -130.8   29.0 -130.8 Analysis Plot     
     20220729 112353   -1.1      N/A   2.7% 177.76    1.10  30.0 SSMI17  29.6 -130.5   29.6 -130.5   29.4 -130.9 Analysis Plot     
     20220729 210453   -1.5      N/A   N/A  155.54    1.47  25.0 SSMI18  31.0 -127.5   31.0 -127.5   30.7 -128.1 Analysis Plot     
     20220729 220030 -930.0      N/A   N/A     N/A    0.00  25.0 SSMI16  31.1 -127.3   31.1 -127.3   30.5 -127.9 Analysis Plot     
     20220729 231321 -930.0      N/A   N/A     N/A    0.00  25.0 SSMI17  31.2 -126.9   31.2 -126.9   31.0 -125.6 Analysis Plot     
     20220730 045716   -2.9      N/A  19.2% 144.43    2.92  30.0  AMSR2  31.8 -125.5   31.8 -125.5   31.9 -125.7 Analysis Plot     
     20220730 091515   -0.3      N/A   N/A  111.10     .31  30.0 SSMI18  32.0 -124.8   32.0 -124.8   32.3 -125.2 Analysis Plot     
     20220730 100201   -2.3      N/A   N/A  188.87    2.27  30.0 SSMI16  32.1 -124.7   32.1 -124.7   32.5 -125.5 Analysis Plot     
     20220730 111016 -930.0      N/A   N/A     N/A    0.00  30.0 SSMI17  32.2 -124.6   32.2 -124.6   32.5 -124.8 Analysis Plot     
     20220730 205201   -0.9      N/A   1.5% 155.54     .94  30.0 SSMI18  33.6 -123.6   33.6 -123.6   33.6 -124.6 Analysis Plot     
     20220730 214717    N/A      N/A   N/A     N/A     N/A  30.0 SSMI16  33.7 -123.6   33.7 -123.6   34.0 -123.4 Analysis Plot     
     20220731 090224   -4.2      N/A   N/A  199.98    4.20  30.0 SSMI18  34.0 -123.3   34.0 -123.3   34.1 -123.3 Analysis Plot     
     20220731 094849   -4.1      N/A   N/A  222.20    4.08  30.0 SSMI16  34.1 -123.3   34.1 -123.3   34.0 -123.3 Analysis Plot     
     20220731 174340   -1.0      N/A   N/A   99.99     .98  25.0  AMSR2  34.9 -123.0   34.9 -123.0   34.9 -123.0 Analysis Plot     
     20220801 002629   -1.3      N/A   N/A  177.76    1.33  25.0 SSMI17  35.1 -123.2   35.1 -123.2   35.1 -122.8 Analysis Plot     
     20220801 044608   -2.1      N/A   N/A   33.33    2.09  25.0  AMSR2  35.7 -123.5   35.7 -123.5   35.5 -123.2 Analysis Plot     
     20220801 084928   -0.7      N/A   N/A   33.33     .74  25.0 SSMI18  35.9 -123.6   35.9 -123.6   35.5 -123.3 Analysis Plot     
     20220801 093546   -1.6      N/A   N/A   11.11    1.60  25.0 SSMI16  36.0 -123.7   36.0 -123.7   35.4 -123.4 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.