Tropical Storm 06E

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                 
     20250629 084608     AMSR2   13.4  -99.8   N/A   N/A     N/A     N/A      N/A   25.0  13.1  -99.7 Analysis Plot     
     20250629 130437  SSMISF17   13.1  -99.5   123    1%    1.43   -1.43      N/A   35.0  13.2 -100.0 Analysis Plot     
     20250629 193717     AMSR2   13.5  -99.7    12   N/A    4.31   -4.31      N/A   35.0  13.8 -100.3 Analysis Plot     
     20250629 224209  SSMISF18   14.2 -100.6    68    1%    1.84   -1.84      N/A   35.0  13.7 -100.7 Analysis Plot     
     20250630 001526  SSMISF17   14.4 -100.5    90   N/A    0.71   -0.71      N/A   35.0  13.8 -100.9 Analysis Plot     
     20250630 024843       GMI   14.3 -100.8    57   11%    0.79   -0.79      N/A   35.0  14.0 -101.0 Analysis Plot     
     20250630 111752  SSMISF18   15.3 -102.2   101   11%    2.01   -2.01      N/A   40.0  15.5 -102.3 Analysis Plot     
     20250630 125004  SSMISF17   15.4 -102.5   135   44%    5.27   -5.27      N/A   45.0  15.6 -102.5 Analysis Plot     
     20250630 160937       GMI   15.9 -102.5   N/A   N/A     N/A     N/A      N/A   45.0  15.7 -102.8 Analysis Plot     
     20250630 201929     AMSR2   16.0 -103.6   168   35%    4.81    4.81      N/A   55.0  16.3 -103.7 Analysis Plot     
     20250630 222923  SSMISF18   16.1 -103.7    46  100%   22.98   37.98  >65 kts   55.0  16.5 -104.1 Analysis Plot     
     20250701 083208     AMSR2   16.9 -104.9    23    7%   10.11   10.11      N/A   70.0  17.0 -105.3 Analysis Plot     
     20250701 110321  SSMISF18   17.1 -105.5    34   44%   14.27   14.27      N/A   70.0  17.1 -105.6 Analysis Plot     
     20250701 152757       GMI   17.3 -106.0   N/A   N/A     N/A     N/A      N/A   80.0  17.5 -106.0 Analysis Plot     
     20250702 013357  SSMISF16   18.1 -107.2    23   42%   20.76   20.76  >65 kts  100.0  18.1 -107.2 Analysis Plot     
     20250702 140714  SSMISF16   19.1 -109.1    79    3%    3.64    3.64      N/A   95.0  19.0 -109.1 Analysis Plot     
     20250702 200950     AMSR2   19.4 -109.4   N/A   N/A     N/A     N/A      N/A   85.0  19.5 -109.8 Analysis Plot     
     20250703 011459  SSMISF17   19.9 -110.0    68   N/A    3.82    3.82      N/A   70.0  19.8 -110.3 Analysis Plot     
     20250703 021550       GMI   19.8 -110.1   N/A   N/A     N/A     N/A      N/A   70.0  19.9 -110.5 Analysis Plot     
     20250703 134707  SSMISF17   20.6 -111.7    57   N/A    1.53   -1.53      N/A   45.0  20.6 -111.7 Analysis Plot     
     20250703 154025       GMI   21.0 -111.9   N/A   N/A     N/A     N/A      N/A   45.0  20.6 -111.8 Analysis Plot     
     20250703 205143     AMSR2   21.5 -112.6    68    1%    0.79   -0.79      N/A   35.0  21.3 -112.5 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.