Tropical Depression 19W

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              
     20201019 072801   -1.8      N/A   9.6% 188.87    1.84  25.0 SSMI16  14.5 -128.1   14.5 -128.1   14.2 -128.6 Analysis Plot     
     20201019 205608   -3.8      N/A   1.4%  33.33    3.81  30.0 SSMI16  15.1 -125.7   15.1 -125.7   15.6 -125.7 Analysis Plot     
     20201020 091640   -5.6      N/A  43.8%  22.22    5.64  40.0 SSMI15  15.9 -123.0   15.9 -123.0   15.9 -122.8 Analysis Plot     
     20201020 102623 -930.0      N/A   N/A     N/A    0.00  40.0 SSMI18  16.0 -122.4   16.0 -122.4   16.1 -123.5 Analysis Plot     
     20201020 195408    N/A      N/A   N/A     N/A     N/A  45.0    GMI  15.9 -120.5   15.9 -120.5   15.7 -120.1 Analysis Plot     
     20201020 211359   -2.5      N/A   N/A   33.33    2.46  40.0 SSMI15  16.5 -119.6   16.5 -119.6   16.5 -119.3 Analysis Plot     
     20201020 220430   -0.8      N/A  46.6%  88.88     .84  40.0 SSMI18  16.5 -119.5   16.5 -119.5   16.5 -119.0 Analysis Plot     
     20201021 072004 -930.0      N/A   N/A     N/A    0.00  45.0    GMI  16.9 -117.6   16.9 -117.6   16.6 -118.8 Analysis Plot     
     20201021 085416 -930.0      N/A   N/A     N/A    0.00  45.0 SSMI16  16.3 -118.3   16.3 -118.3   16.7 -118.4 Analysis Plot     
     20201021 101343   -2.4      N/A  37.0% 133.32    2.36  45.0 SSMI18  16.3 -118.2   16.3 -118.2   15.8 -117.9 Analysis Plot     
     20201021 203927    2.1      N/A  26.0%  33.33    2.08  60.0 SSMI15  16.4 -116.8   16.4 -116.8   16.7 -116.7 Analysis Plot     
     20201021 215146    2.3      N/A  45.2%  55.55    2.34  60.0 SSMI18  16.4 -116.8   16.4 -116.8   16.6 -116.8 Analysis Plot     
     20201021 221100   11.4      N/A  80.8%  66.66   11.39  60.0 SSMI16  16.4 -116.8   16.4 -116.8   16.6 -116.7 Analysis Plot     
     20201022 084128    6.9      N/A  37.0%  44.44    6.89  65.0 SSMI16  17.1 -116.4   17.1 -116.4   17.5 -116.0 Analysis Plot     
     20201022 215752   11.5      N/A  52.1% 144.43   11.54  75.0 SSMI16  17.7 -115.4   18.0 -115.3   18.0 -115.3 Analysis Plot     
     20201023 081733   15.7      N/A  54.8%  44.44   15.73  75.0 SSMI16  18.0 -115.1   18.0 -115.1   18.1 -115.0 Analysis Plot     
     20201023 214439    2.8      N/A   N/A  244.42    2.78  65.0 SSMI16  17.8 -113.9   17.8 -113.9   17.6 -114.2 Analysis Plot     
     20201024 061540 -930.0      N/A   N/A     N/A    0.00  55.0    GMI  17.7 -112.6   17.7 -112.6   17.7 -112.9 Analysis Plot     
     20201024 093539   -2.3      N/A   N/A  177.76    2.35  50.0 SSMI18  17.6 -112.1   17.6 -112.1   17.5 -112.3 Analysis Plot     
     20201024 102256    3.5      N/A   4.1% 244.42    3.49  55.0 SSMI15  17.7 -112.3   17.7 -112.3   17.4 -112.3 Analysis Plot     
     20201024 214308    N/A      N/A   N/A     N/A     N/A  50.0 SSMI15  17.6 -109.7   17.6 -109.7   17.4 -109.2 Analysis Plot     
     20201024 225445 -930.0      N/A   N/A     N/A    0.00  50.0 SSMI18  17.6 -109.5   17.6 -109.5   17.8 -109.9 Analysis Plot     
     20201025 094310   -2.5      N/A   N/A   33.33    2.53  40.0 SSMI16  17.5 -107.8   17.5 -107.8   17.1 -107.7 Analysis Plot     
     20201025 224243   -1.2      N/A   N/A   22.22    1.21  25.0 SSMI18  17.6 -106.7   17.6 -106.7   17.8 -106.5 Analysis Plot     
     20201025 225832 -930.0      N/A   N/A     N/A    0.00  25.0 SSMI16  17.6 -106.6   17.6 -106.6   17.7 -106.3 Analysis Plot     
     20201026 093013   -0.3      N/A   N/A   11.11     .28  25.0 SSMI16  17.5 -104.9   17.5 -104.9   17.3 -104.7 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.