Tropical Depression 01S

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              
     20220728 190415    N/A      N/A   N/A     N/A     N/A  35.0  AMSR2 -10.6  -95.1  -10.6  -95.1  -10.9  -95.9 Analysis Plot     
     20220728 225814   -1.2      N/A   N/A  177.76    1.19  35.0 SSMI18 -10.8  -95.0  -10.8  -95.0  -10.4  -95.3 Analysis Plot     
     20220728 235328   -0.7      N/A   N/A   11.11     .71  35.0 SSMI16 -10.8  -94.9  -10.8  -94.9  -10.4  -94.9 Analysis Plot     
     20220729 010642   -2.9      N/A   5.5% 211.09    2.89  35.0 SSMI17 -10.9  -94.9  -10.9  -94.9  -11.0  -95.1 Analysis Plot     
     20220729 071945   -5.1      N/A   N/A   11.11    5.15  40.0  AMSR2 -11.8  -94.7  -11.8  -94.7  -11.9  -94.9 Analysis Plot     
     20220729 130455 -930.0      N/A   N/A     N/A    0.00  40.0 SSMI17 -12.1  -94.4  -12.1  -94.4  -13.2  -93.7 Analysis Plot     
     20220729 224539    N/A      N/A   N/A     N/A     N/A  40.0 SSMI18 -13.0  -93.4  -13.0  -93.4  -13.9  -93.5 Analysis Plot     
     20220729 234022  -19.1      N/A 100.0%  22.22    4.07  40.0 SSMI16 -13.0  -93.4  -13.0  -93.4  -13.9  -93.8 Analysis Plot     
     20220730 005338  -26.1      N/A  91.8%  33.33   11.09  40.0 SSMI17 -13.1  -93.3  -13.1  -93.3  -14.3  -93.6 Analysis Plot     
     20220730 105621    N/A      N/A   N/A     N/A     N/A  40.0 SSMI18 -13.8  -92.9  -13.8  -92.9  -14.9  -93.2 Analysis Plot     
     20220730 114242 -930.0      N/A   N/A     N/A    0.00  40.0 SSMI16 -13.9  -92.9  -13.9  -92.9  -15.1  -93.3 Analysis Plot     
     20220730 125124   -0.9      N/A  16.4% 133.32     .88  40.0 SSMI17 -13.9  -92.8  -13.9  -92.8  -14.7  -92.9 Analysis Plot     
     20220730 185338    N/A      N/A   N/A     N/A     N/A  35.0  AMSR2 -14.0  -92.3  -14.0  -92.3  -14.6  -92.9 Analysis Plot     
     20220730 223451   -2.0      N/A   1.4% 166.65    1.97  35.0 SSMI18 -14.0  -92.0  -14.0  -92.0  -13.8  -92.5 Analysis Plot     
     20220730 232704   -2.3      N/A   4.1% 144.43    2.34  35.0 SSMI16 -14.0  -92.0  -14.0  -92.0  -13.9  -92.5 Analysis Plot     
     20220731 070805   -4.1      N/A   N/A  199.98    4.07  35.0  AMSR2 -13.7  -91.6  -13.7  -91.6  -13.8  -92.0 Analysis Plot     
     20220731 104325   -2.3      N/A   N/A  177.76    2.35  35.0 SSMI18 -13.6  -91.3  -13.6  -91.3  -13.9  -91.7 Analysis Plot     
     20220731 112933   -3.0      N/A   N/A  188.87    2.98  35.0 SSMI16 -13.5  -91.2  -13.5  -91.2  -13.8  -91.6 Analysis Plot     
     20220731 123759 -930.0      N/A   N/A     N/A    0.00  35.0 SSMI17 -13.5  -91.1  -13.5  -91.1  -13.8  -91.7 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.