Tropical Depression 26P

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              
     20220518 140139    N/A      N/A   N/A     N/A     N/A  35.0  AMSR2 -15.0 -169.1  -15.0 -169.1  -15.7 -169.9 Analysis Plot     
     20220518 180807   -2.8      N/A   N/A  222.20    2.81  35.0 SSMI18 -15.1 -168.8  -15.1 -168.8  -15.5 -168.9 Analysis Plot     
     20220519 021501    N/A      N/A   N/A     N/A     N/A  35.0  AMSR2 -15.8 -168.8  -15.8 -168.8  -16.2 -168.6 Analysis Plot     
     20220519 042835   -0.7      N/A  23.3%  22.22     .70  35.0    GMI -16.0 -168.6  -16.0 -168.6  -16.5 -168.4 Analysis Plot     
     20220519 155322 -930.0      N/A   N/A     N/A    0.00  35.0    GMI -17.2 -167.8  -17.2 -167.8  -17.1 -167.4 Analysis Plot     
     20220519 175516    N/A      N/A   N/A     N/A     N/A  35.0 SSMI18 -17.6 -168.5  -18.2 -168.5  -18.2 -168.5 Analysis Plot     
     20220519 185833    N/A      N/A   N/A     N/A     N/A  35.0 SSMI16 -17.2 -168.2  -17.2 -168.2  -18.0 -168.7 Analysis Plot     
     20220519 203242    N/A      N/A   N/A     N/A     N/A  35.0 SSMI17 -17.3 -168.1  -17.3 -168.1  -18.2 -168.4 Analysis Plot     
     20220520 025742   -3.2      N/A  24.7%  11.11    3.18  35.0  AMSR2 -18.5 -167.6  -18.5 -167.6  -18.5 -167.8 Analysis Plot     
     20220520 053046    N/A      N/A   N/A     N/A     N/A  35.0 SSMI18 -18.6 -167.5  -18.6 -167.5  -18.6 -168.2 Analysis Plot     
     20220520 065436 -930.0      N/A   N/A     N/A    0.00  35.0 SSMI16 -18.6 -167.4  -18.6 -167.4  -19.3 -168.1 Analysis Plot     
     20220520 081049    N/A      N/A   N/A     N/A     N/A  35.0 SSMI17 -18.7 -167.4  -18.7 -167.4  -19.7 -168.2 Analysis Plot     
     20220520 150004   -8.1      N/A  20.9% 211.09    8.09  35.0    GMI -19.4 -167.2  -19.4 -167.2  -19.5 -167.1 Analysis Plot     
     20220520 174228    N/A      N/A   N/A     N/A     N/A  35.0 SSMI18 -19.4 -167.1  -19.4 -167.1  -19.9 -167.8 Analysis Plot     
     20220520 184527 -930.0      N/A   N/A     N/A    0.00  35.0 SSMI16 -19.4 -167.1  -19.4 -167.1  -19.3 -168.3 Analysis Plot     
     20220520 201923   -0.5      N/A   6.8% 211.09     .47  35.0 SSMI17 -19.3 -168.2  -19.3 -168.2  -19.6 -168.0 Analysis Plot     
     20220521 020211   -5.3      N/A  16.4% 111.10    5.25  35.0  AMSR2 -20.0 -169.5  -20.0 -169.5  -20.3 -169.8 Analysis Plot     
     20220521 041817  -11.2      N/A  20.5%  66.66   11.20  35.0    GMI -20.0 -169.5  -20.0 -169.5  -20.5 -169.8 Analysis Plot     
     20220521 052012    N/A      N/A   N/A     N/A     N/A  35.0 SSMI18 -20.1 -169.5  -20.1 -169.5  -20.9 -169.7 Analysis Plot     
     20220521 064127    N/A      N/A   N/A     N/A     N/A  35.0 SSMI16 -20.1 -169.6  -20.1 -169.6  -21.2 -169.7 Analysis Plot     
     20220521 075618   -0.4      N/A   N/A   11.11     .45  35.0 SSMI17 -20.8 -169.7  -20.8 -169.7  -21.2 -169.9 Analysis Plot     
     20220521 172939   -3.1      N/A   N/A   99.99    3.06  35.0 SSMI18 -21.4 -170.0  -21.4 -170.0  -21.0 -170.8 Analysis Plot     
     20220521 182644   -1.0      N/A   N/A  211.09    1.01  35.0 SSMI16 -21.5 -170.0  -21.5 -170.0  -21.3 -170.4 Analysis Plot     
     20220521 200558    N/A      N/A   N/A     N/A     N/A  35.0 SSMI17 -20.7 -169.6  -20.7 -169.6  -20.9 -169.8 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.