Hurricane 05E

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                 
     20250616 235554  SSMISF17   10.0  -92.0   N/A   N/A     N/A     N/A      N/A   30.0  10.4  -91.5 Analysis Plot     
     20250617 082145     AMSR2   12.1  -93.6    57   45%   13.00  -13.00      N/A   35.0  12.1  -93.9 Analysis Plot     
     20250617 123250  SSMISF17   12.2  -93.8   157   32%    2.46   -2.46      N/A   40.0  12.2  -94.1 Analysis Plot     
     20250617 185141       GMI   12.6  -94.5    23   39%    6.55   -6.55      N/A   45.0  12.6  -94.4 Analysis Plot     
     20250617 220734  SSMISF18   13.1  -94.4    34   N/A    4.45   -4.45      N/A   45.0  13.0  -94.6 Analysis Plot     
     20250618 121846  SSMISF17   13.6  -95.8    23   46%    2.94    2.94      N/A   70.0  13.6  -95.8 Analysis Plot     
     20250618 215430  SSMISF18   14.6  -96.7    90  100%   42.99   57.99  >65 kts   90.0  14.6  -96.6 Analysis Plot     
     20250619 010900  SSMISF16   15.0  -96.9    90  100%   39.74   54.74  >65 kts  105.0  15.0  -96.9 Analysis Plot     
     20250619 054016       GMI   15.4  -97.5    34  100%   50.37   65.37  >85 kts  105.0  15.5  -97.5 Analysis Plot     
     20250619 080743     AMSR2   15.7  -97.9    79   97%   18.20   33.20  >65 kts  125.0  16.0  -98.0 Analysis Plot     
     20250619 134418  SSMISF16   16.5  -98.3   N/A   N/A     N/A     N/A      N/A   95.0  16.7  -98.8 Analysis Plot     
     20250619 190257       GMI   18.3 -100.7   N/A   N/A     N/A     N/A      N/A   65.0  17.1  -99.3 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.