Tropical Depression 12W

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              
     20190821 070053 -930.0      N/A   N/A     N/A    0.00  25.0 SSMI16  15.2 -131.9   15.2 -131.9   14.9 -132.7 Analysis Plot     
     20190821 103638   -0.9      N/A   8.2% 177.76     .91  25.0 SSMI18  15.4 -131.6   15.4 -131.6   14.7 -131.7 Analysis Plot     
     20190821 113942   -0.8      N/A   N/A  122.21     .79  25.0 SSMI17  15.5 -131.4   15.5 -131.4   16.3 -131.5 Analysis Plot     
     20190821 171704 -930.0      N/A   N/A     N/A    0.00  30.0  AMSR2  16.1 -130.4   16.1 -130.4   16.5 -129.7 Analysis Plot     
     20190821 185114   -3.5      N/A   N/A   22.22    3.51  30.0 SSMI15  16.1 -130.3   16.1 -130.3   15.7 -131.1 Analysis Plot     
     20190821 202801    N/A      N/A   N/A     N/A     N/A  35.0 SSMI16  16.2 -130.1   16.2 -130.1   15.7 -129.4 Analysis Plot     
     20190821 221321 -930.0      N/A   N/A     N/A    0.00  35.0 SSMI18  16.3 -130.0   16.3 -130.0   16.4 -130.3 Analysis Plot     
     20190822 000304   -3.7      N/A   9.6% 299.97    3.66  35.0    GMI  16.5 -129.7   16.5 -129.7   16.4 -129.5 Analysis Plot     
     20190822 113229   -0.9      N/A   6.2% 211.09     .95  45.0 SSMI18  16.8 -128.1   16.8 -128.1   17.0 -128.6 Analysis Plot     
     20190822 220137   -0.9      N/A   9.6% 266.64     .86  50.0 SSMI18  17.8 -127.5   17.8 -127.5   17.6 -126.8 Analysis Plot     
     20190822 222751 -930.0      N/A   N/A     N/A    0.00  50.0 SSMI17  17.9 -127.4   17.9 -127.4   18.1 -126.4 Analysis Plot     
     20190823 083445 -930.0      N/A   N/A     N/A    0.00  45.0 SSMI16  19.3 -124.7   19.3 -124.7   19.6 -124.7 Analysis Plot     
     20190823 202928    2.5      N/A  23.3% 155.54    2.48  55.0 SSMI15  20.9 -123.0   20.9 -123.0   20.8 -122.8 Analysis Plot     
     20190823 214814 -930.0      N/A   N/A     N/A    0.00  55.0 SSMI18  21.1 -122.7   21.1 -122.7   21.0 -122.5 Analysis Plot     
     20190824 053705    N/A      N/A   N/A     N/A     N/A  55.0  AMSR2  22.0 -121.0   21.9 -120.9   21.9 -120.9 Analysis Plot     
     20190824 082026    N/A      N/A   N/A     N/A     N/A  55.0 SSMI15  22.1 -120.8   22.1 -120.8   22.6 -120.1 Analysis Plot     
     20190824 105944    2.3      N/A   N/A   55.55    2.31  55.0 SSMI17  22.7 -120.0   22.7 -120.0   22.6 -119.9 Analysis Plot     
     20190824 174549   -6.6      N/A   6.8% 255.53    6.64  50.0  AMSR2  24.0 -118.0   24.0 -118.0   23.2 -118.1 Analysis Plot     
     20190824 194034 -930.0      N/A   N/A     N/A    0.00  40.0 SSMI15  24.0 -117.5   24.0 -117.5   23.2 -117.9 Analysis Plot     
     20190824 212932   -3.3      N/A   N/A  188.87    3.28  40.0 SSMI16  24.2 -117.3   24.2 -117.3   23.7 -118.0 Analysis Plot     
     20190824 232131 -930.0      N/A   N/A     N/A    0.00  40.0 SSMI18  24.3 -116.9   24.3 -116.9   24.0 -117.5 Analysis Plot     
     20190825 001853   -3.1      N/A   N/A  166.65    3.13  40.0 SSMI17  24.4 -116.7   24.4 -116.7   24.2 -117.3 Analysis Plot     
     20190825 074914   -0.2      N/A   4.1% 155.54     .23  40.0 SSMI16  25.0 -115.5   25.0 -115.5   25.4 -115.1 Analysis Plot     
     20190825 094615   -2.8      N/A   N/A   44.44    2.76  40.0 SSMI18  25.1 -115.2   25.1 -115.2   25.7 -115.3 Analysis Plot     
     20190825 122740   -1.0      N/A   N/A   44.44    1.01  40.0 SSMI17  25.3 -114.7   25.3 -114.7   25.7 -114.8 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.