Typhoon 16W

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                 
     20250807 031413     AMSR2   18.7  147.7   179   14%    0.40   -0.40      N/A   25.0  18.6  147.5 Analysis Plot     
     20250807 083306  SSMISF16   18.7  147.8   N/A   N/A     N/A     N/A      N/A   30.0  18.8  147.5 Analysis Plot     
     20250807 225703       GMI   20.1  145.7    79   N/A    3.25   -3.25      N/A   35.0  19.9  145.7 Analysis Plot     
     20250808 035735     AMSR2   20.3  145.1    34    4%    0.61   -0.61      N/A   45.0  20.3  145.1 Analysis Plot     
     20250808 063220  SSMISF18   20.9  145.1   N/A   N/A     N/A     N/A      N/A   35.0  20.8  145.0 Analysis Plot     
     20250808 160736     AMSR2   20.5  143.8    12  100%   11.61  -26.61      N/A   45.0  21.2  143.3 Analysis Plot     
     20250808 190352  SSMISF18   20.2  143.4    34   68%    1.68   -1.68      N/A   45.0  21.3  143.2 Analysis Plot     
     20250809 165102     AMSR2   21.4  140.2    34   86%    9.16  -24.16      N/A   50.0  21.7  139.6 Analysis Plot     
     20250809 230637       GMI   21.0  138.8    90   81%   10.28   10.28      N/A   55.0  21.5  139.2 Analysis Plot     
     20250810 034617     AMSR2   21.4  138.3    23   25%    8.25    8.25      N/A   55.0  21.6  137.7 Analysis Plot     
     20250810 060543  SSMISF18   21.2  135.6   N/A   N/A     N/A     N/A      N/A   55.0  21.6  137.4 Analysis Plot     
     20250810 093420  SSMISF16   22.5  136.5   N/A   N/A     N/A     N/A      N/A   50.0  21.6  136.4 Analysis Plot     
     20250810 123049       GMI   21.9  135.8   N/A   N/A     N/A     N/A      N/A   50.0  21.6  136.2 Analysis Plot     
     20250810 220556  SSMISF16   21.1  132.9   157    6%    1.62   -1.62      N/A   50.0  21.3  133.4 Analysis Plot     
     20250811 042843     AMSR2   20.4  132.3   N/A   N/A     N/A     N/A      N/A   55.0  21.6  132.3 Analysis Plot     
     20250811 073228  SSMISF18   21.5  131.4   N/A   N/A     N/A     N/A      N/A   50.0  21.2  131.6 Analysis Plot     
     20250811 092101  SSMISF16   21.7  131.2   112   N/A    3.30   -3.30      N/A   50.0  21.7  131.2 Analysis Plot     
     20250812 172142     AMSR2   22.1  123.5    90   57%    7.23    7.23      N/A   80.0  22.1  123.2 Analysis Plot     
     20250812 232047  SSMISF16   21.7  123.1   N/A   N/A     N/A     N/A      N/A   75.0  22.6  121.7 Analysis Plot     
     20250813 232309       GMI   24.5  115.1    68   N/A    1.71    1.71      N/A   75.0  24.9  115.3 Analysis Plot     
     20250814 095639  SSMISF17   26.3  112.3    79   N/A    0.16    0.16      N/A   75.0  26.1  112.4 Analysis Plot     
     20250814 102317  SSMISF16   26.1  112.5   168   N/A    0.44   -0.44      N/A   25.0  26.2  112.3 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.