Tropical Storm 24S

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              
     20190423 031519    N/A      N/A   N/A     N/A     N/A  30.0 SSMI18 -10.0  -50.4  -10.0  -50.4  -10.0  -49.5 Analysis Plot     
     20190423 041545    N/A      N/A   N/A     N/A     N/A  30.0 SSMI17 -10.0  -50.3  -10.0  -50.3  -10.1  -49.6 Analysis Plot     
     20190423 104307  -27.1      N/A 100.0%  11.11   12.11  35.0  AMSR2 -10.4  -49.2  -10.0  -48.9  -10.0  -48.9 Analysis Plot     
     20190423 130759 -920.0      N/A 100.0%  22.22     .70  45.0 SSMI16 -10.6  -48.8  -10.6  -48.8  -10.1  -48.8 Analysis Plot     
     20190423 140257    N/A      N/A   N/A     N/A     N/A  35.0 SSMI15 -10.5  -49.0  -10.5  -49.0   -9.9  -48.8 Analysis Plot     
     20190424 030317   55.0  >65 kts 100.0%  44.44   40.04  65.0 SSMI18 -10.8  -46.2  -10.5  -46.3  -10.5  -46.3 Analysis Plot     
     20190424 041507   39.8  >65 kts 100.0%  44.44   24.82  65.0 SSMI17 -10.8  -46.0  -10.7  -46.3  -10.7  -46.3 Analysis Plot     
     20190424 134716   72.7  >85 kts 100.0%  33.33   57.66  70.0 SSMI15 -11.1  -44.8  -11.2  -44.4  -11.2  -44.4 Analysis Plot     
     20190424 150721   69.3  >85 kts 100.0%  33.33   54.26  75.0 SSMI18 -11.2  -44.0  -11.2  -43.9  -11.2  -43.9 Analysis Plot     
     20190424 160624   64.2  >85 kts 100.0%  33.33   49.23  75.0 SSMI17 -11.2  -43.8  -11.1  -43.7  -11.1  -43.7 Analysis Plot     
     20190425 103058   57.5  >65 kts 100.0%  22.22   42.53 125.0  AMSR2 -11.7  -41.4  -11.9  -41.1  -11.9  -41.1 Analysis Plot     
     20190425 142403    N/A      N/A   N/A     N/A     N/A 120.0 SSMI16 -12.1  -40.7  -11.9  -40.5  -11.9  -40.5 Analysis Plot     
     20190425 145501    N/A      N/A   N/A     N/A     N/A 120.0 SSMI18 -12.1  -40.6  -11.8  -40.5  -11.8  -40.5 Analysis Plot     
     20190425 155342    N/A      N/A   N/A     N/A     N/A 120.0 SSMI17 -12.1  -40.5  -11.8  -40.4  -11.8  -40.4 Analysis Plot     
     20190426 014224    N/A      N/A   N/A     N/A     N/A  75.0 SSMI16 -12.4  -39.6  -12.4  -39.6  -12.2  -38.9 Analysis Plot     
     20190426 111303    2.0      N/A   N/A   11.11    2.00  75.0  AMSR2 -12.6  -38.9  -12.6  -38.9  -12.5  -39.2 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.