Tropical Depression 23W

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              
     20221014 220720   -2.6      N/A   5.5% 222.20    2.58  25.0 SSMI16  18.8 -127.1   18.8 -127.1   19.1 -127.1 Analysis Plot     
     20221015 094245 -930.0      N/A   N/A     N/A    0.00  35.0 SSMI18  18.6 -123.6   18.6 -123.6   19.1 -124.9 Analysis Plot     
     20221015 101900 -930.0      N/A   N/A     N/A    0.00  35.0 SSMI16  18.6 -123.5   18.6 -123.5   19.4 -124.6 Analysis Plot     
     20221015 105423   -0.9      N/A  23.3% 155.54     .92  35.0 SSMI17  18.6 -123.4   18.6 -123.4   18.8 -123.4 Analysis Plot     
     20221015 211111   -6.6      N/A  46.6% 144.43    6.61  45.0 SSMI18  19.3 -121.9   19.3 -121.9   19.2 -121.4 Analysis Plot     
     20221015 215422  -18.2      N/A   6.8% 122.21   18.22  45.0 SSMI16  19.3 -121.8   19.3 -121.8   19.3 -121.4 Analysis Plot     
     20221016 001422   -8.6      N/A   4.1%  88.88    8.61  45.0 SSMI17  19.4 -121.4   19.4 -121.4   19.3 -120.8 Analysis Plot     
     20221016 050526  -25.0      N/A  34.2% 111.10   24.98  50.0  AMSR2  19.5 -120.4   19.6 -120.1   19.6 -120.1 Analysis Plot     
     20221016 092020 -930.0      N/A   N/A     N/A    0.00  70.0 SSMI18  19.6 -119.6   19.6 -119.7   19.6 -119.7 Analysis Plot     
     20221016 121158   15.1      N/A  47.9%  88.88   15.11  70.0 SSMI17  19.6 -119.2   19.7 -119.3   19.7 -119.3 Analysis Plot     
     20221016 205755   22.1  >65 kts  63.0%  77.77   22.13  75.0 SSMI18  19.6 -117.4   19.8 -117.6   19.8 -117.6 Analysis Plot     
     20221017 000041   20.2  >65 kts  56.2%  77.77   20.19  75.0 SSMI17  19.5 -117.0   19.6 -117.1   19.6 -117.1 Analysis Plot     
     20221017 054824    N/A      N/A   N/A     N/A     N/A  80.0  AMSR2  19.6 -116.1   19.6 -116.1   19.6 -116.1 Analysis Plot     
     20221017 094241   16.9      N/A  52.1%  55.55   16.93  90.0 SSMI16  19.0 -116.1   19.0 -115.8   19.0 -115.8 Analysis Plot     
     20221017 175929    1.4      N/A   N/A   66.66    1.42  90.0  AMSR2  18.6 -114.5   18.6 -114.5   17.5 -114.8 Analysis Plot     
     20221017 230122   24.1  >65 kts  52.1%  55.55   24.07  90.0 SSMI16  18.4 -114.1   18.4 -114.1   18.4 -114.1 Analysis Plot     
     20221017 234707    6.9      N/A   N/A   55.55    6.93  90.0 SSMI17  18.4 -113.9   18.3 -114.1   18.3 -114.1 Analysis Plot     
     20221018 085422 -930.0      N/A   N/A     N/A    0.00  90.0 SSMI18  17.9 -112.8   17.9 -112.8   17.8 -113.5 Analysis Plot     
     20221018 092930 -930.0      N/A   N/A     N/A    0.00  90.0 SSMI16  17.9 -112.7   17.9 -112.7   17.7 -113.4 Analysis Plot     
     20221018 184350 -930.0      N/A   N/A     N/A    0.00  65.0  AMSR2  17.1 -111.7   17.1 -111.7   17.4 -111.6 Analysis Plot     
     20221018 224935    2.5      N/A   N/A  144.43    2.47  65.0 SSMI16  17.1 -111.4   17.1 -111.4   17.2 -111.4 Analysis Plot     
     20221018 233320 -930.0      N/A   N/A     N/A    0.00  65.0    GMI  17.0 -111.2   17.0 -111.2   16.8 -110.8 Analysis Plot     
     20221019 053624 -930.0      N/A   N/A     N/A    0.00  55.0  AMSR2  17.0 -110.2   17.0 -110.2   17.5 -109.3 Analysis Plot     
     20221019 084125   -2.8      N/A   N/A  133.32    2.77  50.0 SSMI18  17.1 -110.0   17.1 -110.0   16.8 -109.8 Analysis Plot     
     20221019 105831   -5.3      N/A   N/A  177.76    5.31  50.0    GMI  17.1 -109.7   17.1 -109.7   16.9 -109.1 Analysis Plot     
     20221019 113133   -2.2      N/A   N/A  133.32    2.24  50.0 SSMI17  17.1 -109.8   17.1 -109.8   16.8 -109.7 Analysis Plot     
     20221019 215948   -1.5      N/A   N/A   44.44    1.49  40.0 SSMI18  17.5 -108.2   17.5 -108.2   17.4 -108.1 Analysis Plot     
     20221019 224338   -1.8      N/A   N/A   33.33    1.80  40.0 SSMI16  17.5 -108.1   17.5 -108.1   17.4 -108.4 Analysis Plot     
     20221020 010104   -2.3      N/A   N/A  211.09    2.25  40.0 SSMI17  17.6 -107.9   17.6 -107.9   17.6 -108.1 Analysis Plot     
     20221020 082827   -2.1      N/A   N/A   22.22    2.15  25.0 SSMI18  17.7 -108.2   17.7 -108.2   17.5 -107.9 Analysis Plot     
     20221020 112743   -1.4      N/A   N/A   22.22    1.39  25.0 SSMI17  17.7 -108.0   17.7 -108.0   17.5 -107.7 Analysis Plot     
     20221020 183037   -1.1      N/A   N/A   66.66    1.13  25.0  AMSR2  17.3 -107.7   17.3 -107.7   17.4 -107.5 Analysis Plot     
     20221020 214843   -1.0      N/A   N/A   33.33    1.04  25.0 SSMI18  17.3 -107.7   17.3 -107.7   16.7 -107.1 Analysis Plot     
     20221021 103159 -930.0      N/A   N/A     N/A    0.00  25.0 SSMI16  16.9 -107.4   16.9 -107.4   17.4 -106.7 Analysis Plot     
     20221021 110430 -930.0      N/A   N/A     N/A    0.00  25.0 SSMI17  16.9 -107.4   16.9 -107.4   15.9 -107.8 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.