Tropical Storm 30Y_05

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              
     20200807 171638   -3.4      N/A  13.7% 177.76    3.42  30.0  AMSR2  16.3 -126.2   16.3 -126.2   16.5 -125.3 Analysis Plot     
     20200807 193108   -3.3      N/A  24.7% 122.21    3.33  30.0 SSMI15  16.7 -126.2   16.7 -126.2   16.3 -126.5 Analysis Plot     
     20200807 213450   -1.3      N/A   8.2% 188.87    1.30  30.0 SSMI16  16.8 -126.2   16.8 -126.2   16.7 -126.2 Analysis Plot     
     20200808 080348 -930.0      N/A   N/A     N/A    0.00  30.0 SSMI16  17.8 -126.5   17.8 -126.5   18.4 -125.9 Analysis Plot     
     20200808 090548   -0.9      N/A  37.0% 177.76     .94  30.0 SSMI18  18.1 -126.6   18.1 -126.6   18.0 -125.9 Analysis Plot     
     20200808 174444 -930.0      N/A   N/A     N/A    0.00  30.0    GMI  20.9 -125.5   20.9 -125.5   22.2 -125.8 Analysis Plot     
     20200808 211306 -930.0      N/A   N/A     N/A    0.00  35.0 SSMI16  21.4 -126.0   21.4 -126.0   21.5 -125.4 Analysis Plot     
     20200809 033334 -930.0      N/A   N/A     N/A    0.00  40.0    GMI  24.2 -126.3   24.2 -126.3   23.7 -125.7 Analysis Plot     
     20200809 074123 -930.0      N/A   N/A     N/A    0.00  40.0 SSMI16  25.2 -126.3   25.2 -126.3   24.7 -125.5 Analysis Plot     
     20200809 085556 -930.0      N/A   N/A     N/A    0.00  40.0 SSMI18  25.5 -126.3   25.5 -126.3   24.8 -125.4 Analysis Plot     
     20200809 210000   -1.5      N/A   5.5% 133.32    1.51  45.0 SSMI16  30.3 -126.7   30.3 -126.7   31.0 -126.9 Analysis Plot     
     20200809 220441   -3.5      N/A   1.4% 177.76    3.52  45.0 SSMI18  30.8 -126.8   30.8 -126.8   31.2 -127.3 Analysis Plot     
     20200810 072811    N/A      N/A   N/A     N/A     N/A  40.0 SSMI16  34.6 -128.3   34.6 -128.3   35.3 -128.4 Analysis Plot     
     20200810 084354    N/A      N/A   N/A     N/A     N/A  40.0 SSMI18  35.0 -128.4   35.0 -128.4   35.9 -128.6 Analysis Plot     
     20200810 204640   -1.6      N/A   9.6% 144.43    1.61  40.0 SSMI16  40.4 -133.1   40.4 -133.1   40.9 -134.4 Analysis Plot     
     20200810 215211 -930.0      N/A   N/A     N/A    0.00  40.0 SSMI18  40.8 -133.6   40.8 -133.6   41.0 -134.9 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.