Tropical Depression 02W

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                 
     20250622 181421  SSMISF18   23.7  145.1    90   N/A    2.66   -2.66      N/A   30.0  24.0  145.1 Analysis Plot     
     20250622 212938  SSMISF16   24.2  145.3    79   N/A    1.53   -1.53      N/A   30.0  24.5  144.7 Analysis Plot     
     20250623 034709     AMSR2   25.3  144.0   123    6%    2.27   -2.27      N/A   35.0  25.6  143.9 Analysis Plot     
     20250623 084620  SSMISF16   26.3  143.4   246   11%    4.72   -4.72      N/A   35.0  26.5  143.5 Analysis Plot     
     20250623 121357       GMI   27.1  143.2    90   26%    1.78   -1.78      N/A   35.0  27.2  143.0 Analysis Plot     
     20250623 155458     AMSR2   28.0  142.3   N/A   N/A     N/A     N/A      N/A   40.0  28.1  142.1 Analysis Plot     
     20250623 211445  SSMISF16   29.1  141.6    57   14%    0.52   -0.52      N/A   35.0  29.1  141.4 Analysis Plot     
     20250624 014204       GMI   29.4  140.8    46   N/A    1.96   -1.96      N/A   35.0  29.6  141.1 Analysis Plot     
     20250624 083404  SSMISF16   30.3  140.2    23   N/A    2.26   -2.26      N/A   35.0  30.3  140.2 Analysis Plot     
     20250624 113033       GMI   30.6  140.2   201    4%    1.56   -1.56      N/A   35.0  30.6  140.0 Analysis Plot     
     20250624 163615     AMSR2   31.3  139.8   N/A   N/A     N/A     N/A      N/A   35.0  31.3  139.9 Analysis Plot     
     20250624 205813  SSMISF17   31.7  139.5   135   N/A    1.94   -1.94      N/A   30.0  31.8  139.8 Analysis Plot     
     20250625 064559  SSMISF18   33.1  139.6   146   N/A    3.87   -3.87      N/A   30.0  32.9  139.5 Analysis Plot     
     20250625 190958  SSMISF18   35.1  140.1   157    4%    0.59   -0.59      N/A   25.0  35.1  140.8 Analysis Plot     
     20250625 204326  SSMISF17   35.7  140.1   N/A   N/A     N/A     N/A      N/A   25.0  35.4  141.1 Analysis Plot     
     20250626 015544       GMI   36.2  142.1   N/A   N/A     N/A     N/A      N/A   25.0  36.3  141.9 Analysis Plot     
     20250626 063345  SSMISF18   37.1  143.7   135    4%    2.62   -2.62      N/A   25.0  37.8  143.8 Analysis Plot     
     20250626 080848  SSMISF16   37.7  144.1   190    6%    3.54   -3.54      N/A   25.0  38.2  144.3 Analysis Plot     
     20250626 100453       GMI   39.3  146.6   N/A   N/A     N/A     N/A      N/A   25.0  38.3  144.5 Analysis Plot     
     20250626 162111     AMSR2   41.2  150.1   N/A   N/A     N/A     N/A      N/A   30.0  40.9  148.0 Analysis Plot     
     20250626 185409  SSMISF18   41.2  148.4   201   10%    2.25   -2.25      N/A   30.0  41.2  148.4 Analysis Plot     
     20250626 202657  SSMISF17   41.6  149.5   223   N/A    3.08   -3.08      N/A   30.0  41.6  149.0 Analysis Plot     
     20250626 203053  SSMISF16   41.4  149.7   N/A   N/A     N/A     N/A      N/A   30.0  41.8  149.2 Analysis Plot     
     20250627 011628       GMI   42.8  151.1     5   N/A    0.98   -0.98      N/A   30.0  43.0  150.7 Analysis Plot     
     20250627 032807     AMSR2   43.5  151.8   N/A   N/A     N/A     N/A      N/A   30.0  43.9  151.9 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.