Tropical Depression 12S

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              
     20220213 093439    N/A      N/A   N/A     N/A     N/A  35.0  AMSR2 -15.1  -60.5  -15.1  -60.5  -15.6  -60.4 Analysis Plot     
     20220213 130412    N/A      N/A   N/A     N/A     N/A  35.0 SSMI18 -15.3  -60.1  -15.3  -60.1  -15.6  -59.7 Analysis Plot     
     20220213 150106   -6.6      N/A  35.6%  66.66    6.60  35.0 SSMI17 -15.3  -59.8  -15.3  -59.8  -15.8  -59.7 Analysis Plot     
     20220213 153624   -9.3      N/A  31.5%  44.44    9.28  35.0    GMI -15.4  -59.6  -15.4  -59.6  -15.9  -59.2 Analysis Plot     
     20220214 003543   -8.9      N/A  50.7%  33.33    8.93  45.0 SSMI18 -16.1  -57.2  -16.1  -57.2  -16.2  -57.1 Analysis Plot     
     20220214 015905    N/A      N/A   N/A     N/A     N/A  45.0 SSMI16 -16.1  -56.9  -16.1  -56.9  -16.1  -56.8 Analysis Plot     
     20220214 101723    N/A      N/A   N/A     N/A     N/A  50.0  AMSR2 -16.6  -54.4  -16.6  -54.4  -16.6  -54.4 Analysis Plot     
     20220214 124523   -3.2      N/A   N/A   88.88    3.21  50.0 SSMI18 -16.7  -54.0  -16.7  -54.0  -16.7  -54.1 Analysis Plot     
     20220214 140933    N/A      N/A   N/A     N/A     N/A  50.0 SSMI16 -16.8  -53.8  -16.8  -53.8  -17.1  -53.2 Analysis Plot     
     20220215 014554    N/A      N/A   N/A     N/A     N/A  45.0 SSMI16 -16.7  -51.8  -17.0  -51.5  -17.0  -51.5 Analysis Plot     
     20220215 040749    N/A      N/A   N/A     N/A     N/A  45.0 SSMI17 -16.6  -51.4  -17.0  -50.9  -17.0  -50.9 Analysis Plot     
     20220215 135652    N/A      N/A   N/A     N/A     N/A  45.0 SSMI16 -16.7  -49.3  -16.7  -49.3  -17.1  -49.5 Analysis Plot     
     20220215 152414 -930.0      N/A   N/A     N/A    0.00  45.0    GMI -16.6  -49.0  -16.6  -49.0  -16.2  -49.3 Analysis Plot     
     20220215 161454    N/A      N/A   N/A     N/A     N/A  45.0 SSMI17 -16.6  -49.0  -16.6  -49.0  -17.4  -48.9 Analysis Plot     
     20220216 020011    N/A      N/A   N/A     N/A     N/A  35.0 SSMI18 -16.9  -47.0  -16.9  -47.0  -17.3  -47.3 Analysis Plot     
     20220216 025016    N/A      N/A   N/A     N/A     N/A  35.0    GMI -16.9  -46.7  -16.9  -46.7  -17.9  -46.8 Analysis Plot     
     20220216 025020 -930.0      N/A   N/A     N/A    0.00  35.0    GMI -16.9  -46.7  -16.9  -46.7  -16.7  -46.1 Analysis Plot     
     20220216 035426   -1.1      N/A   N/A   77.77    1.14  35.0 SSMI17 -16.9  -46.7  -16.9  -46.7  -17.6  -46.5 Analysis Plot     
     20220216 135206   -1.0      N/A  20.5% 211.09    1.05  35.0 SSMI18 -16.7  -44.8  -16.7  -44.8  -17.3  -44.8 Analysis Plot     
     20220216 160603 -930.0      N/A   N/A     N/A    0.00  35.0    GMI -16.6  -44.3  -16.6  -44.3  -17.8  -44.8 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.