Tropical Storm 30Y_11

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              
     20200926 115138   -6.3      N/A  16.4%  22.22    6.29  30.0    GMI  18.3 -159.3   18.3 -159.3   18.3 -159.2 Analysis Plot     
     20200926 152527   -4.0      N/A   N/A   33.33    3.99  30.0  AMSR2  19.0 -159.5   19.0 -159.5   19.9 -159.3 Analysis Plot     
     20200926 191229 -930.0      N/A   N/A     N/A    0.00  30.0 SSMI16  19.4 -159.3   19.4 -159.3   19.4 -158.4 Analysis Plot     
     20200927 022001 -930.0      N/A   N/A     N/A    0.00  35.0  AMSR2  20.5 -158.9   20.5 -158.9   20.5 -157.9 Analysis Plot     
     20200927 052844 -930.0      N/A   N/A     N/A    0.00  35.0 SSMI16  20.9 -158.5   20.9 -158.5   21.0 -157.9 Analysis Plot     
     20200927 065129 -930.0      N/A   N/A     N/A    0.00  35.0 SSMI18  21.4 -157.4   21.4 -157.4   22.6 -157.4 Analysis Plot     
     20200927 185651   -9.5      N/A  37.0%  22.22    9.55  40.0 SSMI16  25.0 -155.2   25.0 -155.2   25.6 -155.0 Analysis Plot     
     20200927 201048   -1.6      N/A  16.4% 133.32    1.57  40.0 SSMI18  25.4 -155.1   25.4 -155.1   26.3 -155.2 Analysis Plot     
     20200928 151120   -6.0      N/A  35.6%  33.33    6.00  50.0  AMSR2  29.5 -152.4   29.8 -153.2   29.8 -153.2 Analysis Plot     
     20200928 195831    6.1      N/A  53.4%  44.44    6.11  55.0 SSMI18  30.7 -153.2   30.7 -153.2   31.0 -153.5 Analysis Plot     
     20200929 010306    9.8      N/A  78.1%  44.44    9.76  60.0    GMI  32.5 -154.2   32.5 -154.2   33.1 -154.2 Analysis Plot     
     20200929 062604    N/A      N/A   N/A     N/A     N/A  60.0 SSMI18  33.9 -154.9   33.9 -154.9   34.7 -155.1 Analysis Plot     
     20200930 001237 -930.0      N/A   N/A     N/A    0.00  60.0    GMI  39.4 -160.4   39.4 -160.4   39.8 -160.0 Analysis Plot     
     20200930 025610 -930.0      N/A   N/A     N/A    0.00  55.0  AMSR2  39.8 -161.4   39.8 -161.4   39.9 -160.7 Analysis Plot     
     20200930 044924    2.2      N/A   N/A   22.22    2.17  55.0 SSMI16  40.0 -162.2   40.0 -162.2   40.4 -162.8 Analysis Plot     
     20200930 061319 -930.0      N/A   N/A     N/A    0.00  55.0 SSMI18  40.3 -162.9   40.3 -162.9   40.6 -163.3 Analysis Plot     
     20200930 075444 -930.0      N/A   N/A     N/A    0.00  55.0 SSMI18  40.5 -163.6   40.5 -163.6   40.6 -163.4 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.