Tropical Storm 09W

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              
     20220811 090618 -930.0      N/A   N/A     N/A    0.00  25.0 SSMI16  28.9 -135.9   28.9 -135.9   28.7 -135.9 Analysis Plot     
     20220811 185651   -3.1      N/A   N/A   11.11    3.12  35.0    GMI  29.3 -136.1   29.3 -136.1   29.8 -135.7 Analysis Plot     
     20220811 195848   -0.9      N/A  21.9% 199.98     .89  35.0 SSMI18  29.3 -136.1   29.3 -136.1   29.2 -135.5 Analysis Plot     
     20220811 205511 -930.0      N/A   N/A     N/A    0.00  35.0 SSMI16  29.1 -136.0   29.1 -136.0   28.8 -136.0 Analysis Plot     
     20220812 044127 -930.0      N/A   N/A     N/A    0.00  35.0    GMI  31.0 -136.3   31.0 -136.3   30.8 -136.9 Analysis Plot     
     20220812 074610   -0.8      N/A   6.8% 111.10     .76  35.0 SSMI18  30.9 -136.6   30.9 -136.6   30.9 -136.5 Analysis Plot     
     20220812 083208    N/A      N/A   N/A     N/A     N/A  35.0 SSMI16  31.0 -136.6   31.0 -136.6   31.3 -136.2 Analysis Plot     
     20220812 180544 -930.0      N/A   N/A     N/A    0.00  35.0    GMI  32.9 -137.2   32.9 -137.2   32.5 -136.3 Analysis Plot     
     20220812 232654   -1.7      N/A  21.9%  88.88    1.73  35.0 SSMI17  34.1 -137.9   34.1 -137.9   34.5 -137.9 Analysis Plot     
     20220813 034855   -0.7      N/A  23.3% 211.09     .66  35.0    GMI  34.5 -138.2   34.5 -138.2   34.3 -137.9 Analysis Plot     
     20220813 073106 -930.0      N/A   N/A     N/A    0.00  35.0 SSMI18  35.0 -138.8   35.0 -138.8   34.7 -138.0 Analysis Plot     
     20220813 081859   -0.3      N/A   4.7% 188.87     .30  35.0 SSMI16  35.1 -139.0   35.1 -139.0   34.6 -138.3 Analysis Plot     
     20220813 193330 -930.0      N/A   N/A     N/A    0.00  30.0 SSMI18  37.5 -142.6   37.5 -142.6   36.9 -142.5 Analysis Plot     
     20220813 231336   -4.1      N/A  30.1% 222.20    4.09  35.0 SSMI17  38.5 -144.5   38.5 -144.5   37.8 -144.1 Analysis Plot     
     20220814 025548 -930.0      N/A   N/A     N/A    0.00  35.0    GMI  40.0 -146.4   40.0 -146.4   39.8 -147.7 Analysis Plot     
     20220814 071728   -3.3      N/A  11.0% 211.09    3.33  35.0 SSMI18  41.1 -147.8   41.1 -147.8   40.7 -147.3 Analysis Plot     
     20220814 074758 -930.0      N/A   N/A     N/A    0.00  35.0 SSMI17  41.3 -147.9   41.3 -147.9   41.3 -148.5 Analysis Plot     
     20220814 080555   -2.0      N/A  13.7% 255.53    2.02  35.0 SSMI16  41.4 -148.1   41.4 -148.1   40.9 -147.8 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.