Hurricane 07E

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                 
     20260724 203621     AMSR2    9.2 -101.8   190   32%    1.55   -1.55      N/A   35.0   9.3 -102.1 Analysis Plot     
     20260724 224816       GMI    9.2 -102.0   135   12%    1.86   -1.86      N/A   35.0   9.3 -102.2 Analysis Plot     
     20260724 232309  SSMISF18    9.5 -102.3   123    4%    2.90   -2.90      N/A   35.0   9.4 -102.3 Analysis Plot     
     20260725 102145       GMI   10.1 -103.7   112   44%    2.37   -2.37      N/A   45.0  10.1 -103.9 Analysis Plot     
     20260725 123919  SSMISF17   11.0 -104.6   N/A   N/A     N/A     N/A      N/A   50.0  10.5 -104.6 Analysis Plot     
     20260725 141522  SSMISF16   10.9 -104.3   168   35%    3.97   -3.97      N/A   50.0  10.9 -104.4 Analysis Plot     
     20260725 230908  SSMISF18   12.2 -106.9   123   21%    2.78    2.78      N/A   65.0  11.9 -106.5 Analysis Plot     
     20260726 114529  SSMISF18   12.9 -108.9    46  100%   63.28   78.28  >85 kts   90.0  13.4 -109.2 Analysis Plot     
     20260726 202543     AMSR2   13.9 -110.2    34  100%   51.28   66.28  >85 kts  115.0  14.0 -110.4 Analysis Plot     
     20260726 225849       GMI   14.3 -110.7    23  100%   56.02   71.02  >85 kts  115.0  14.1 -110.6 Analysis Plot     
     20260727 011453  SSMISF17   14.7 -111.0    23  100%   57.02   72.02  >85 kts  130.0  14.4 -111.0 Analysis Plot     
     20260727 025337  SSMISF16   14.8 -111.2    23  100%   57.31   72.31  >85 kts  130.0  14.7 -111.2 Analysis Plot     
     20260727 103032       GMI   15.7 -112.5    23  100%   54.07   69.07  >85 kts  140.0  15.7 -112.4 Analysis Plot     
     20260727 134952  SSMISF17   15.7 -112.9    23  100%   57.16   72.16  >85 kts  135.0  16.0 -113.2 Analysis Plot     
     20260727 210900     AMSR2   16.7 -113.8    23  100%   46.18   61.18  >85 kts  130.0  16.7 -114.1 Analysis Plot     
     20260728 094655       GMI   17.6 -115.4    34   44%   16.28   16.28      N/A  120.0  17.6 -115.5 Analysis Plot     
     20260728 133520  SSMISF17   17.6 -116.1    23   54%   22.33   22.33  >65 kts  110.0  17.9 -116.1 Analysis Plot     
     20260728 230917       GMI   18.1 -117.1    23   60%   16.66   16.66      N/A  105.0  18.1 -117.2 Analysis Plot     
     20260729 000937  SSMISF18   18.3 -117.3    23   50%   14.24   14.24      N/A  115.0  18.2 -117.3 Analysis Plot     
     20260729 100440     AMSR2   18.5 -118.7   N/A   N/A     N/A     N/A      N/A  110.0  18.5 -118.8 Analysis Plot     
     20260729 124246  SSMISF18   18.4 -118.9   146   14%    3.03    3.03      N/A  100.0  18.6 -119.1 Analysis Plot     
     20260729 145946  SSMISF16   18.7 -119.3    90   12%   11.15   11.15      N/A  100.0  18.9 -119.4 Analysis Plot     
     20260729 205823     AMSR2   19.1 -120.0   N/A   N/A     N/A     N/A      N/A   85.0  19.3 -120.4 Analysis Plot     
     20260730 021521  SSMISF17   19.5 -121.1   112    7%    1.77    1.77      N/A   85.0  19.5 -121.1 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.