Tropical Storm 31Y_02

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              
     20190901 213614   -3.5      N/A  12.3% 155.54    3.49  30.0 SSMI18  14.6 -126.7   14.6 -126.7   14.7 -126.6 Analysis Plot     
     20190902 052940 -930.0      N/A   N/A     N/A    0.00  35.0  AMSR2  15.9 -125.4   15.9 -125.4   16.5 -125.4 Analysis Plot     
     20190902 074558   -4.7      N/A   6.8%  66.66    4.71  35.0 SSMI16  16.6 -124.9   16.6 -124.9   17.2 -125.3 Analysis Plot     
     20190902 105241   -2.8      N/A  23.3% 211.09    2.84  35.0 SSMI17  17.2 -124.5   17.2 -124.5   17.8 -124.7 Analysis Plot     
     20190902 174052   -2.5      N/A  12.3%  11.11    2.53  45.0  AMSR2  18.6 -124.0   18.9 -123.8   18.9 -123.8 Analysis Plot     
     20190902 210443   -1.1      N/A  30.1% 122.21    1.07  45.0 SSMI16  18.9 -123.7   18.9 -123.7   19.4 -124.0 Analysis Plot     
     20190902 235946   -1.3      N/A  47.9% 188.87    1.28  45.0 SSMI17  19.4 -123.4   19.4 -123.4   19.8 -123.7 Analysis Plot     
     20190903 073250    6.9      N/A   9.6%  99.99    6.94  55.0 SSMI16  20.5 -124.0   20.7 -124.3   20.7 -124.3 Analysis Plot     
     20190903 093419 -930.0      N/A   N/A     N/A    0.00  55.0 SSMI18  20.9 -124.1   20.9 -124.1   21.1 -124.2 Analysis Plot     
     20190903 120831   13.8      N/A  31.5%  99.99   13.78  55.0 SSMI17  21.1 -124.1   21.1 -124.1   21.1 -124.4 Analysis Plot     
     20190903 205136   12.3      N/A  41.1%  77.77   12.29  65.0 SSMI16  22.2 -123.9   22.2 -123.9   22.1 -124.4 Analysis Plot     
     20190903 234512   21.4  >65 kts  24.7%  77.77   21.38  65.0 SSMI17  22.2 -124.1   22.3 -124.4   22.3 -124.4 Analysis Plot     
     20190904 051821    N/A      N/A   N/A     N/A     N/A  70.0  AMSR2  22.4 -124.4   22.4 -124.4   22.4 -124.4 Analysis Plot     
     20190904 071945   41.9  >65 kts 100.0%  77.77   26.92  70.0 SSMI16  22.3 -124.6   22.5 -125.4   22.5 -125.4 Analysis Plot     
     20190904 091743 -930.0      N/A   N/A     N/A    0.00  70.0 SSMI15  22.3 -124.6   22.3 -124.6   22.9 -125.0 Analysis Plot     
     20190904 111216   21.8  >65 kts  47.9%  77.77   21.80  70.0 SSMI18  22.4 -125.0   22.7 -125.3   22.7 -125.3 Analysis Plot     
     20190904 120435   47.7  >65 kts 100.0%  77.77   32.73  70.0 SSMI17  22.5 -125.0   22.8 -125.4   22.8 -125.4 Analysis Plot     
     20190904 172709   52.3  >65 kts 100.0%  66.66   37.28  85.0  AMSR2  23.3 -125.2   23.5 -125.3   23.5 -125.3 Analysis Plot     
     20190904 203822   47.5  >65 kts 100.0%  55.55   32.52  85.0 SSMI16  23.6 -125.3   23.7 -125.5   23.7 -125.5 Analysis Plot     
     20190904 224059   52.1  >65 kts 100.0%  55.55   37.06  85.0 SSMI18  23.9 -125.3   23.9 -125.3   23.9 -125.3 Analysis Plot     
     20190904 233240   56.0  >65 kts 100.0%  55.55   41.01  85.0 SSMI17  23.9 -125.3   24.0 -125.3   24.0 -125.3 Analysis Plot     
     20190905 042459 -930.0      N/A   N/A     N/A    0.00  85.0  AMSR2  24.4 -125.2   24.8 -125.4   24.8 -125.4 Analysis Plot     
     20190905 072004   65.9  >85 kts 100.0%  44.44   50.93  90.0 SSMI16  24.6 -125.2   25.0 -125.4   25.0 -125.4 Analysis Plot     
     20190905 105024   63.3  >85 kts 100.0%  44.44   48.31  90.0 SSMI18  25.1 -125.1   25.3 -125.3   25.3 -125.3 Analysis Plot     
     20190905 115116   54.1  >65 kts 100.0%  33.33   39.14  90.0 SSMI17  25.2 -125.1   25.4 -125.4   25.4 -125.4 Analysis Plot     
     20190905 203235   61.8  >85 kts 100.0%  33.33   46.77  90.0    GMI  26.8 -125.2   27.4 -125.1   27.4 -125.1 Analysis Plot     
     20190905 222736   45.1  >65 kts 100.0%  33.33   30.15  90.0 SSMI18  27.0 -125.2   27.5 -125.2   27.5 -125.2 Analysis Plot     
     20190905 231818   70.8  >85 kts 100.0%  33.33   55.81  90.0 SSMI17  27.2 -125.2   27.7 -125.2   27.7 -125.2 Analysis Plot     
     20190906 050739   64.4  >85 kts 100.0%  33.33   49.35  90.0  AMSR2  28.9 -125.1   29.4 -125.2   29.4 -125.2 Analysis Plot     
     20190906 103750   11.1      N/A  71.2%  33.33   11.13  90.0 SSMI18  30.5 -125.2   30.4 -125.2   30.4 -125.2 Analysis Plot     
     20190906 112743    3.4      N/A  47.9%  33.33    3.41  90.0 SSMI17  30.7 -125.2   30.7 -125.3   30.7 -125.3 Analysis Plot     
     20190906 171235    5.2      N/A  37.0% 211.09    5.18  80.0  AMSR2  33.3 -125.1   33.3 -125.0   33.3 -125.0 Analysis Plot     
     20190906 221439    1.3      N/A   N/A  111.10    1.35  80.0 SSMI18  34.3 -125.3   34.3 -125.3   34.6 -124.7 Analysis Plot     
     20190907 041534    5.1      N/A  20.5%  44.44    5.05  70.0  AMSR2  37.2 -125.2   37.6 -125.6   37.6 -125.6 Analysis Plot     
     20190907 102514 -930.0      N/A   N/A     N/A    0.00  70.0 SSMI18  38.7 -125.4   38.7 -125.4   37.9 -126.3 Analysis Plot     
     20190907 111507 -930.0      N/A   N/A     N/A    0.00  70.0 SSMI17  39.2 -125.6   39.2 -125.6   38.3 -126.2 Analysis Plot     
     20190907 220152   -3.9      N/A   1.4% 144.43    3.87  45.0 SSMI18  45.3 -129.1   45.3 -129.1   46.1 -129.4 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.