Tropical Storm 01L

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              
     20210523 233641   -5.7      N/A   N/A   33.33    5.73  35.0 SSMI17  37.9   57.0   37.9   57.0   37.0   57.1 Analysis Plot     
     20220605 070148   -3.7      N/A  11.0% 211.09    3.72  45.0  AMSR2  28.9   76.8   28.9   76.8   28.8   76.7 Analysis Plot     
     20220605 105630   -3.6      N/A  11.0% 222.20    3.58  45.0 SSMI18  29.3   76.0   29.3   76.0   29.3   76.0 Analysis Plot     
     20220605 115143   -1.4      N/A   9.6% 199.98    1.40  45.0 SSMI16  29.4   75.7   29.4   75.7   29.9   75.3 Analysis Plot     
     20220605 132350   -3.0      N/A   1.4% 222.20    3.03  45.0 SSMI17  29.7   75.3   29.7   75.3   29.8   75.0 Analysis Plot     
     20220605 140140   -5.3      N/A   N/A   33.33    5.32  45.0    GMI  29.9   74.9   29.9   74.9   30.3   74.7 Analysis Plot     
     20220605 180111    N/A      N/A   N/A     N/A     N/A  50.0  AMSR2  30.8   73.1   30.8   73.1   31.0   73.4 Analysis Plot     
     20220605 224458    3.4      N/A   8.2% 199.98    3.38  55.0 SSMI18  31.6   71.2   31.6   71.2   31.6   71.1 Analysis Plot     
     20220606 010018 -930.0      N/A   N/A     N/A    0.00  55.0 SSMI17  32.0   70.3   32.0   70.3   32.1   69.9 Analysis Plot     
     20220606 060534    0.5      N/A   N/A   11.11     .51  60.0  AMSR2  33.0   67.5   33.0   67.5   32.9   67.8 Analysis Plot     
     20220606 104341    2.2      N/A   N/A  122.21    2.18  60.0 SSMI18  33.6   66.3   33.6   66.3   33.2   66.4 Analysis Plot     
     20220606 113832 -930.0      N/A   N/A     N/A    0.00  60.0 SSMI16  33.8   65.9   33.8   65.9   33.4   65.9 Analysis Plot     
     20220606 131023 -930.0      N/A   N/A     N/A    0.00  60.0 SSMI17  34.0   65.3   34.0   65.3   33.4   65.1 Analysis Plot     
     20220606 170651    2.3      N/A   N/A   88.88    2.25  55.0  AMSR2  34.2   63.1   34.2   63.1   34.0   62.1 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.