Tropical Depression 06L

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              
     20190826 210317   -2.4      N/A   N/A  199.98    2.40  30.0 SSMI16  31.7   72.5   31.7   72.5   31.4   72.8 Analysis Plot     
     20190826 225259   -1.9      N/A   1.6% 222.20    1.95  30.0 SSMI18  31.7   72.4   31.7   72.4   31.8   72.4 Analysis Plot     
     20190827 064213    N/A      N/A   N/A     N/A     N/A  30.0  AMSR2  31.6   72.1   31.6   72.1   31.4   71.5 Analysis Plot     
     20190827 082034   -0.7      N/A   N/A  144.43     .73  30.0 SSMI15  31.0   71.6   31.0   71.6   31.0   71.7 Analysis Plot     
     20190827 105615   -1.2      N/A   2.7% 222.20    1.18  30.0 SSMI16  31.0   71.6   31.0   71.6   31.0   71.8 Analysis Plot     
     20190827 134150 -930.0      N/A   N/A     N/A    0.00  30.0 SSMI17  31.1   71.5   31.1   71.5   31.2   71.2 Analysis Plot     
     20190827 174243   -6.0      N/A   8.2% 222.20    6.00  30.0  AMSR2  31.2   71.2   31.2   71.2   31.3   71.7 Analysis Plot     
     20190827 205044   -2.0      N/A   6.8% 222.20    2.01  30.0 SSMI16  31.7   71.8   31.7   71.8   31.5   72.3 Analysis Plot     
     20190828 011805 -930.0      N/A   N/A     N/A    0.00  30.0 SSMI17  32.1   71.9   32.1   71.9   32.3   72.0 Analysis Plot     
     20190828 081906 -930.0      N/A   N/A     N/A    0.00  35.0 SSMI15  32.4   72.3   32.4   72.3   32.0   71.7 Analysis Plot     
     20190828 104321   -1.7      N/A   N/A  122.21    1.74  35.0 SSMI16  32.5   72.3   32.5   72.3   32.8   72.3 Analysis Plot     
     20190828 133903   -0.5      N/A   N/A   22.22     .51  35.0 SSMI17  33.0   72.3   33.0   72.3   33.3   72.6 Analysis Plot     
     20190828 203752   -1.8      N/A   N/A  144.43    1.81  30.0 SSMI16  34.3   72.8   34.3   72.8   34.3   72.8 Analysis Plot     
     20190829 010518   -1.8      N/A   N/A   66.66    1.83  30.0 SSMI17  35.2   72.4   35.2   72.4   34.7   72.7 Analysis Plot     
     20190829 062843   -2.7      N/A  21.9%  33.33    2.74  30.0  AMSR2  36.6   71.5   36.6   71.5   36.9   71.4 Analysis Plot     
     20190829 102955    N/A      N/A   N/A     N/A     N/A  30.0 SSMI16  36.3   71.4   36.3   71.4   37.0   70.9 Analysis Plot     
     20190829 122837    N/A      N/A   N/A     N/A     N/A  30.0 SSMI18  36.8   71.0   36.8   71.0   37.2   70.8 Analysis Plot     
     20190829 132504 -930.0      N/A   N/A     N/A    0.00  30.0 SSMI17  37.2   70.8   37.2   70.8   37.0   71.5 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.