Tropical Storm 01S

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              
     20201113 202843  -20.7      N/A  90.4%  22.22    5.73  35.0  AMSR2  -6.9  -81.0   -6.5  -80.3   -6.5  -80.3 Analysis Plot     
     20201113 230230  -14.8      N/A  45.2% 177.76   14.79  35.0 SSMI15  -7.1  -80.7   -7.1  -80.7   -7.2  -80.0 Analysis Plot     
     20201113 234303  -10.9      N/A  45.2% 188.87   10.93  35.0 SSMI18  -7.2  -80.7   -7.2  -80.0   -7.2  -80.0 Analysis Plot     
     20201114 011945  -10.5      N/A  46.6% 188.87   10.46  35.0 SSMI16  -7.3  -80.5   -7.1  -79.9   -7.1  -79.9 Analysis Plot     
     20201114 034938    N/A      N/A   N/A     N/A     N/A  45.0    GMI  -7.9  -78.9   -7.9  -78.9   -8.1  -78.8 Analysis Plot     
     20201114 084548  -31.2      N/A  93.2%  22.22   16.20  45.0  AMSR2  -8.9  -78.1   -8.9  -78.1   -8.9  -77.9 Analysis Plot     
     20201114 123405   -1.9      N/A  27.4%  88.88    1.91  45.0 SSMI15  -9.2  -77.7   -9.2  -77.7   -9.7  -77.1 Analysis Plot     
     20201114 151915 -930.0      N/A   N/A     N/A    0.00  50.0    GMI -10.1  -76.7  -10.3  -76.2  -10.3  -76.2 Analysis Plot     
     20201114 234208    5.8      N/A  65.8%  55.55    5.76  55.0 SSMI16 -11.3  -75.5  -11.3  -75.5  -11.2  -74.9 Analysis Plot     
     20201115 115311    4.4      N/A  39.7%  44.44    4.40  60.0 SSMI15 -13.3  -73.8  -13.3  -73.8  -13.6  -73.6 Analysis Plot     
     20201115 115513    5.4      N/A  46.6%  33.33    5.40  60.0 SSMI16 -13.4  -73.8  -13.4  -73.8  -13.7  -73.6 Analysis Plot     
     20201115 201815   54.3  >65 kts 100.0%  88.88   39.27  65.0  AMSR2 -14.6  -73.1  -15.0  -72.7  -15.0  -72.7 Analysis Plot     
     20201116 005953    5.8      N/A  47.9%  44.44    5.76  65.0 SSMI18 -15.0  -72.9  -15.6  -72.7  -15.6  -72.7 Analysis Plot     
     20201116 083152    4.0      N/A  39.7%  33.33    4.04  65.0  AMSR2 -16.4  -72.2  -16.4  -72.2  -16.5  -72.2 Analysis Plot     
     20201116 114211 -930.0      N/A   N/A     N/A    0.00  65.0 SSMI16 -16.6  -72.0  -16.6  -72.0  -17.4  -72.2 Analysis Plot     
     20201116 210231 -930.0      N/A   N/A     N/A    0.00  45.0  AMSR2 -16.8  -71.7  -16.8  -71.7  -16.6  -71.9 Analysis Plot     
     20201117 004721   -1.4      N/A   N/A  177.76    1.44  45.0 SSMI18 -17.0  -71.6  -17.0  -71.6  -16.5  -72.1 Analysis Plot     
     20201117 091413   -2.7      N/A   N/A  155.54    2.70  35.0  AMSR2 -17.3  -71.4  -17.3  -71.4  -17.0  -71.4 Analysis Plot     
     20201117 125735 -930.0      N/A   N/A     N/A    0.00  35.0 SSMI18 -17.6  -71.2  -17.6  -71.2  -18.6  -72.0 Analysis Plot     
     20201117 141417   -4.1      N/A   2.7% 199.98    4.14  35.0    GMI -17.9  -71.1  -17.9  -71.1  -17.4  -71.2 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.