Tropical Depression 27W

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              
     20191112 204942   -0.6      N/A   N/A   22.22     .59  25.0 SSMI16  12.3 -130.1   12.3 -130.1   12.3 -130.5 Analysis Plot     
     20191112 214135   -1.7      N/A   N/A  166.65    1.73  25.0 SSMI18  12.4 -130.0   12.4 -130.0   12.1 -129.8 Analysis Plot     
     20191113 043909   -3.5      N/A   N/A  266.64    3.55  30.0  AMSR2  13.0 -128.6   13.0 -128.6   13.0 -128.7 Analysis Plot     
     20191113 090812   -0.2      N/A  15.1%  33.33     .23  30.0 SSMI15  13.3 -128.2   13.3 -128.2   13.3 -127.8 Analysis Plot     
     20191113 203533   -1.1      N/A   N/A   33.33    1.07  30.0 SSMI16  13.4 -127.9   13.4 -127.9   13.2 -128.2 Analysis Plot     
     20191113 212824   -0.9      N/A   N/A  177.76     .87  30.0 SSMI18  13.5 -127.8   13.5 -127.8   14.0 -128.0 Analysis Plot     
     20191114 052319 -930.0      N/A   N/A     N/A    0.00  30.0  AMSR2  14.4 -126.9   14.4 -126.9   14.4 -126.8 Analysis Plot     
     20191114 195646   -1.3      N/A   5.5% 233.31    1.28  30.0 SSMI16  15.5 -125.6   15.5 -125.6   15.6 -125.5 Analysis Plot     
     20191114 234214 -930.0      N/A   N/A     N/A    0.00  30.0    GMI  16.3 -125.8   16.3 -125.8   15.5 -126.1 Analysis Plot     
     20191115 092640 -930.0      N/A   N/A     N/A    0.00  30.0 SSMI18  17.2 -125.8   17.2 -125.8   16.5 -126.0 Analysis Plot     
     20191115 201135   -2.4      N/A   4.1% 144.43    2.41  35.0 SSMI15  16.0 -126.0   16.0 -126.0   16.3 -126.2 Analysis Plot     
     20191116 051040    N/A      N/A   N/A     N/A     N/A  35.0  AMSR2  16.0 -125.7   16.0 -125.7   16.0 -125.7 Analysis Plot     
     20191116 110440   -1.3      N/A   8.2% 111.10    1.29  35.0 SSMI18  15.5 -125.9   15.5 -125.9   15.9 -126.1 Analysis Plot     
     20191116 185645   -2.5      N/A  15.1%  55.55    2.46  35.0 SSMI15  15.8 -125.3   15.8 -125.3   15.9 -125.4 Analysis Plot     
     20191116 223251 -930.0      N/A   N/A     N/A    0.00  35.0 SSMI18  15.9 -125.2   15.9 -125.2   16.5 -125.3 Analysis Plot     
     20191117 080652   -5.6      N/A  19.2% 122.21    5.59  45.0 SSMI16  15.9 -125.0   15.9 -125.0   16.5 -124.8 Analysis Plot     
     20191117 104246   -6.2      N/A  24.7% 111.10    6.20  50.0 SSMI18  16.9 -124.7   16.9 -124.7   16.7 -124.6 Analysis Plot     
     20191117 213412   -8.1      N/A  52.1% 133.32    8.14  50.0 SSMI16  17.4 -123.6   17.6 -123.8   17.6 -123.8 Analysis Plot     
     20191117 222030   -9.5      N/A  47.9% 155.54    9.53  50.0 SSMI18  17.4 -123.6   17.7 -123.8   17.7 -123.8 Analysis Plot     
     20191118 045903   46.0  >65 kts 100.0% 122.21   31.03  60.0  AMSR2  17.8 -123.1   17.9 -123.4   17.9 -123.4 Analysis Plot     
     20191118 075345   51.5  >65 kts 100.0%  88.88   36.50  60.0 SSMI16  17.9 -122.9   17.9 -122.9   18.2 -123.3 Analysis Plot     
     20191118 093537 -930.0      N/A   N/A     N/A    0.00  60.0 SSMI15  17.9 -122.9   17.9 -122.9   17.6 -121.8 Analysis Plot     
     20191118 103008   45.7  >65 kts 100.0%  99.99   30.65  65.0 SSMI18  18.2 -123.0   18.4 -123.3   18.4 -123.3 Analysis Plot     
     20191118 171104   19.9      N/A  49.3%  77.77   19.87  75.0  AMSR2  18.9 -122.6   19.0 -122.7   19.0 -122.7 Analysis Plot     
     20191118 211230    7.0      N/A  28.8%  55.55    7.01  75.0 SSMI16  19.1 -122.3   19.1 -122.3   19.2 -122.6 Analysis Plot     
     20191118 220657   12.0      N/A  56.2%  66.66   11.97  75.0 SSMI18  19.1 -122.3   19.1 -122.3   19.3 -122.5 Analysis Plot     
     20191119 054324 -930.0      N/A   N/A     N/A    0.00  80.0  AMSR2  18.7 -121.9   18.7 -121.9   19.4 -122.2 Analysis Plot     
     20191119 074041   19.9      N/A  49.3%  44.44   19.94  80.0 SSMI16  18.6 -121.8   18.6 -121.8   19.3 -122.6 Analysis Plot     
     20191119 084909    8.1      N/A  61.6%  44.44    8.08  80.0 SSMI18  18.6 -121.8   19.4 -122.5   19.4 -122.5 Analysis Plot     
     20191119 091912   37.9  >65 kts 100.0%  44.44   22.90  80.0 SSMI15  18.6 -121.8   18.6 -121.8   19.4 -122.6 Analysis Plot     
     20191119 215503    5.4      N/A   N/A  111.10    5.37  65.0 SSMI18  18.1 -121.7   18.1 -121.7   18.0 -121.8 Analysis Plot     
     20191120 044804 -930.0      N/A   N/A     N/A    0.00  55.0  AMSR2  16.8 -121.0   16.8 -121.0   16.3 -121.3 Analysis Plot     
     20191120 083555    1.6      N/A   N/A  155.54    1.61  55.0 SSMI15  16.5 -120.7   16.5 -120.7   15.8 -120.4 Analysis Plot     
     20191120 204609 -930.0      N/A   N/A     N/A    0.00  35.0 SSMI16  14.1 -118.9   14.1 -118.9   13.7 -118.4 Analysis Plot     
     20191121 095222 -930.0      N/A   N/A     N/A    0.00  25.0 SSMI18  12.8 -117.2   12.8 -117.2   12.6 -116.9 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.