Tropical Storm 16P

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              
     20190226 013734   -1.4      N/A  46.6%  22.22    1.37  35.0  AMSR2 -15.2  175.8  -15.2  175.8  -15.5  176.3 Analysis Plot     
     20190226 045221 -930.0      N/A   N/A     N/A    0.00  35.0 SSMI15 -15.5  175.8  -15.5  175.8  -16.2  176.0 Analysis Plot     
     20190226 070120   -0.3      N/A  43.8%  66.66     .30  35.0 SSMI17 -16.1  175.8  -16.1  175.8  -16.0  176.5 Analysis Plot     
     20190226 144603   -2.0      N/A  27.4% 188.87    1.99  40.0 SSMI15 -17.4  176.4  -17.5  176.4  -17.5  176.4 Analysis Plot     
     20190226 183854  -15.2      N/A  79.5%  33.33   15.18  40.0 SSMI18 -17.9  176.6  -18.0  176.3  -18.0  176.3 Analysis Plot     
     20190226 185030 -930.0      N/A   N/A     N/A    0.00  40.0 SSMI18 -17.9  176.6  -18.0  176.6  -18.0  176.6 Analysis Plot     
     20190227 052822   16.9      N/A  53.4%  33.33   16.86  65.0 SSMI15 -19.8  177.1  -19.5  177.4  -19.5  177.4 Analysis Plot     
     20190227 063950    7.4      N/A  32.9%  33.33    7.39  65.0 SSMI17 -20.2  177.3  -19.8  177.6  -19.8  177.6 Analysis Plot     
     20190227 063950    7.4      N/A  32.9%  33.33    7.39  65.0 SSMI18 -20.2  177.3  -19.8  177.6  -19.8  177.6 Analysis Plot     
     20190227 143815   50.5  >65 kts 100.0%  33.33   35.46  75.0 SSMI15 -21.0  177.9  -20.7  178.0  -20.7  178.0 Analysis Plot     
     20190227 162741   40.6  >65 kts 100.0%  33.33   25.57  75.0 SSMI17 -21.1  178.0  -20.8  178.0  -20.8  178.0 Analysis Plot     
     20190227 183017   12.5      N/A  58.9%  33.33   12.48  75.0 SSMI18 -21.3  178.1  -21.1  178.2  -21.1  178.2 Analysis Plot     
     20190228 042138    N/A      N/A   N/A     N/A     N/A  85.0 SSMI16 -22.6  178.2  -22.8  178.2  -22.8  178.2 Analysis Plot     
     20190228 051434    2.2      N/A  43.8% 122.21    2.20  85.0 SSMI15 -22.5  178.2  -22.5  178.1  -22.5  178.1 Analysis Plot     
     20190228 161430    0.5      N/A   N/A  122.21     .55  90.0 SSMI16 -25.0  178.2  -24.9  178.0  -24.9  178.0 Analysis Plot     
     20190228 181801    2.6      N/A   N/A  199.98    2.62  90.0 SSMI18 -25.3  178.3  -25.3  177.9  -25.3  177.9 Analysis Plot     
     20190301 040830    N/A      N/A   N/A     N/A     N/A  75.0 SSMI16 -26.4  177.5  -26.4  177.5  -27.5  177.2 Analysis Plot     
     20190301 061749    N/A      N/A   N/A     N/A     N/A  75.0 SSMI18 -26.7  177.3  -26.7  177.3  -28.1  176.9 Analysis Plot     
     20190301 130258    9.0      N/A   N/A  222.20    9.02  55.0  AMSR2 -27.9  177.0  -27.9  177.0  -27.5  177.1 Analysis Plot     
     20190301 181311    0.3      N/A   N/A   11.11     .30  55.0 SSMI18 -28.1  176.1  -28.1  176.1  -27.7  176.2 Analysis Plot     
     20190302 033426    N/A      N/A   N/A     N/A     N/A  40.0 SSMI16 -28.2  173.8  -28.2  173.8  -28.2  173.0 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.