Hurricane 14L

Passive Microwave (PMW) Intensity Information
Advanced Dvorak Technique
Version 9.1


       --Overpass--              --ARCHER--   Ring  Ring            Eye              BT   -Forecast-  
       Date    Time      Sat     Lat    Lon   Diam   Pct  TbDiff   Score  Meaning   Vmax  Lat    Lon                 
     20241005 195611     AMSR2   22.3  -95.1   N/A   N/A     N/A     N/A      N/A   35.0  22.4  -94.9 Analysis Plot     
     20241005 220505  SSMISF18   23.3  -95.5   168   19%    2.25   -2.25      N/A   35.0  22.8  -95.5 Analysis Plot     
     20241006 002323  SSMISF16   23.0  -95.5    68   25%    1.06   -1.06      N/A   35.0  22.9  -95.4 Analysis Plot     
     20241006 004355  SSMISF17   23.0  -95.5    57   26%    1.47   -1.47      N/A   35.0  22.9  -95.4 Analysis Plot     
     20241006 073728       GMI   22.7  -94.9   N/A   N/A     N/A     N/A      N/A   40.0  22.9  -94.8 Analysis Plot     
     20241006 080505     AMSR2   22.5  -94.8   N/A   N/A     N/A     N/A      N/A   40.0  23.0  -94.8 Analysis Plot     
     20241006 125423  SSMISF16   22.2  -94.5    34   36%    5.17   -5.17      N/A   50.0  23.0  -94.5 Analysis Plot     
     20241006 131458  SSMISF17   22.1  -94.4    46   25%    3.63   -3.63      N/A   50.0  22.4  -94.4 Analysis Plot     
     20241006 190218     AMSR2   22.1  -94.3   N/A   N/A     N/A     N/A      N/A   70.0  22.3  -93.9 Analysis Plot     
     20241006 215119  SSMISF18   22.7  -93.8   135   61%    2.18    2.18      N/A   70.0  22.4  -93.7 Analysis Plot     
     20241007 002923  SSMISF17   22.8  -93.2    23   94%   18.85   33.85  >65 kts   75.0  22.3  -93.4 Analysis Plot     
     20241007 065501       GMI   22.1  -92.9    12  100%   20.85   35.85  >65 kts   80.0  22.3  -92.6 Analysis Plot     
     20241007 102241  SSMISF18   21.6  -92.5    12  100%   24.90   39.90  >65 kts   90.0  21.8  -92.2 Analysis Plot     
     20241007 124107  SSMISF16   21.5  -92.0     5  100%   28.64   43.64  >65 kts  120.0  21.7  -92.0 Analysis Plot     
     20241007 130057  SSMISF17   21.5  -91.9     5  100%   26.50   41.50  >65 kts  120.0  21.7  -91.9 Analysis Plot     
     20241007 202114       GMI   21.8  -90.9     5  100%   20.38   35.38  >65 kts  150.0  21.5  -90.8 Analysis Plot     
     20241007 213725  SSMISF18   22.1  -91.1   101   57%    2.88    2.88      N/A  150.0  21.8  -90.6 Analysis Plot     
     20241007 235555  SSMISF16   22.1  -90.3   N/A   N/A     N/A     N/A      N/A  150.0  21.9  -90.3 Analysis Plot     
     20241008 001506  SSMISF17   22.0  -90.3    68   90%    7.43   22.43  >65 kts  150.0  21.9  -90.2 Analysis Plot     
     20241008 061329       GMI   22.1  -89.4    23  100%   69.75   84.75  >85 kts  150.0  21.9  -89.4 Analysis Plot     
     20241008 075256     AMSR2   22.2  -89.1    23  100%   63.54   78.54  >85 kts  135.0  22.4  -88.7 Analysis Plot     
     20241008 100844  SSMISF18   22.2  -89.0    12  100%   60.02   75.02  >85 kts  135.0  22.5  -88.6 Analysis Plot     
     20241008 124635  SSMISF17   22.3  -88.6    12  100%   43.20   58.20  >65 kts  130.0  22.6  -88.2 Analysis Plot     
     20241008 193908       GMI   22.6  -87.7    12  100%   68.40   83.40  >85 kts  140.0  23.1  -87.7 Analysis Plot     
     20241008 212356  SSMISF18   22.9  -87.6    12  100%   31.61   46.61  >65 kts  140.0  22.8  -87.3 Analysis Plot     
     20241008 234236  SSMISF16   23.1  -86.9    12   92%    6.15   21.15  >65 kts  140.0  23.0  -87.0 Analysis Plot     
     20241009 000124  SSMISF17   23.2  -86.7    12  100%   23.01   38.01  >65 kts  145.0  23.0  -86.9 Analysis Plot     
     20241009 053130       GMI   23.7  -85.9     5  100%   50.37   65.37  >85 kts  140.0  23.7  -86.2 Analysis Plot     
     20241009 065818     AMSR2   23.9  -85.6   N/A   N/A     N/A     N/A      N/A  140.0  24.6  -85.3 Analysis Plot     
     20241009 095232  SSMISF18   24.5  -85.1   N/A   N/A     N/A     N/A      N/A  140.0  25.0  -85.0 Analysis Plot     
     20241009 121250  SSMISF16   25.0  -84.3   N/A   N/A     N/A     N/A      N/A  135.0  25.4  -84.8 Analysis Plot     
     20241009 123133  SSMISF17   25.3  -84.5     5   86%    3.24   18.24      N/A  135.0  25.5  -84.7 Analysis Plot     
     20241009 185819       GMI   26.6  -83.6    12   89%   18.27   33.27  >65 kts  135.0  26.6  -83.7 Analysis Plot     
     20241009 211058  SSMISF18   26.9  -83.4    90   28%    7.33    7.33      N/A  115.0  27.0  -83.3 Analysis Plot     
     20241009 211121  SSMISF18   26.5  -81.6   N/A   N/A     N/A     N/A      N/A  115.0  27.3  -83.1 Analysis Plot     
     20241009 233008  SSMISF16   27.2  -82.9   101   10%    9.07    9.07      N/A  115.0  27.3  -83.0 Analysis Plot     
     20241009 234856  SSMISF17   27.3  -82.7   101   32%   15.25   15.25      N/A  105.0  27.6  -82.6 Analysis Plot     
     20241010 044839       GMI   27.8  -81.7   N/A   N/A     N/A     N/A      N/A  105.0  27.9  -81.5 Analysis Plot     
     20241010 073920     AMSR2   28.3  -80.5   N/A   N/A     N/A     N/A      N/A   80.0  28.6  -80.2 Analysis Plot     
     20241010 093924  SSMISF18   28.1  -80.2   N/A   N/A     N/A     N/A      N/A   80.0  28.7  -80.0 Analysis Plot     
     20241010 121634  SSMISF17   28.6  -78.8   N/A   N/A     N/A     N/A      N/A   70.0  28.9  -79.3 Analysis Plot     
     20241010 181733       GMI   29.2  -77.3   N/A   N/A     N/A     N/A      N/A   70.0  29.3  -77.3 Analysis Plot

Legend

  - Overpass Date/Time are determined from satellite overpass of targeted TC (position determined from Best Track Lat/Lon position). Date is YYYYMMDD and time in HHMMSS (UTC).

  - Forecast (Best Track) and ARCHER positions (deg) of the TC center at overpass day/time. Positive/Negative: Latitude = North/South Hemisphere; Longitude = Eastern/Western Hemisphere.

  - BT Vmax is the concurrent ATCF Best Track (BT) wind speed intensity estimate (Vmax) value from either NOAA/National Hurricane Center (NHC) (North Atlantic and Northeast Pacific), NOAA/Central Pacific Hurricane Center (CPHC) (North-central Pacific) or Joint Typhoon Warning Center (JTWC) (Northwest Pacific, Indian Ocean, or Southwest Pacific).

  - Sat is the satellite descriptor providing the overpass. Currently the satellites used are the DMSP/SSMIS-16/17/18, GPM/GMI, and GCOM/AMSR2.

  - Ring Diam (km) indicates the estimated surface eyewall diameter if one is analyzed in the PMW imagery. The value listed is the average PMW-estimated inner eyewall edge diameter minus 10 km for eyewall slope. N/A indicates no appreciable eyewall is analyzed.

  - Ring Pct is the percentage of the analyzed "ring" (eyewall inner boundary) that is 1) colder than the eye Tb (the "hot spot" -- warmest eye pixel) by at least 20K, or 2) that is colder than 232K and colder than the eye Tb by 10K, whichever is greater. Values are red if Ring % ≤65,yellow/brown if Ring % ≤85 and green if Ring % >85. N/A indicates no appreciable eyewall is analyzed. A value over 85% is used in the intensity score by adding 15 points to it.

  - TbDiff is the difference between the warmest eye pixel and the warmest pixel on the eyewall. This value is used in the Intensity Score. N/A indicates no appreciable eyewall is analyzed.

  - Eye Score values are based on the strength and organization of the convective/eyewall signatures in the PMW imagery, and based on the ARCHER center location. They normally range from 0 to 100 with empirically-determined thresholds related to intensity (Vmax) in the "Meaning" column (≥20 suggests ≥65kts; ≥60 suggests ≥85kts). Scores are listed as negative, and not used by the ADT, when the NHC, CPHC, or JTWC Best Track Vmax is <55 kts in order to filter out occasional "false eye" cases. A value of -920 is used when the warmest eye pixel is <200K to prevent false positives; -930 means edge of overpass and <85% of eyewall is captured and therefore can't fully be analyzed.