Tropical Depression 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                 
     20240804 142527  SSMISF17   16.3 -112.9   N/A   N/A     N/A     N/A      N/A   30.0  15.8 -112.9 Analysis Plot     
     20240804 212136     AMSR2   15.4 -113.2   135    3%    3.79   -3.79      N/A   30.0  15.4 -113.2 Analysis Plot     
     20240805 013531  SSMISF17   15.1 -113.0   N/A   N/A     N/A     N/A      N/A   35.0  15.2 -113.3 Analysis Plot     
     20240805 023050       GMI   15.0 -113.0   279   10%    2.99   -2.99      N/A   35.0  15.1 -113.3 Analysis Plot     
     20240805 093425     AMSR2   14.8 -113.6   N/A   N/A     N/A     N/A      N/A   35.0  14.6 -114.2 Analysis Plot     
     20240805 111441  SSMISF18   14.9 -113.9   268    4%    2.34   -2.34      N/A   35.0  14.6 -114.2 Analysis Plot     
     20240805 132358  SSMISF16   14.6 -113.0   N/A   N/A     N/A     N/A      N/A   40.0  14.5 -114.1 Analysis Plot     
     20240805 141103  SSMISF17   14.7 -113.2   N/A   N/A     N/A     N/A      N/A   40.0  14.5 -114.1 Analysis Plot     
     20240805 155216       GMI   14.5 -113.8   N/A   N/A     N/A     N/A      N/A   40.0  14.4 -114.1 Analysis Plot     
     20240806 012138  SSMISF17   13.4 -114.7   N/A   N/A     N/A     N/A      N/A   45.0  13.4 -114.0 Analysis Plot     
     20240806 012155  SSMISF17   13.8 -114.3   168   12%    3.80   -3.80      N/A   45.0  13.8 -114.3 Analysis Plot     
     20240806 150953       GMI   14.3 -114.9   N/A   N/A     N/A     N/A      N/A   55.0  14.0 -115.2 Analysis Plot     
     20240806 210824     AMSR2   14.6 -115.2    79   26%   11.87   11.87      N/A   55.0  14.5 -115.4 Analysis Plot     
     20240806 235305  SSMISF18   15.2 -115.5   N/A   N/A     N/A     N/A      N/A   55.0  14.8 -115.5 Analysis Plot     
     20240806 235309  SSMISF18   15.4 -115.3   N/A   N/A     N/A     N/A      N/A   55.0  15.0 -115.6 Analysis Plot     
     20240807 020236  SSMISF16   16.1 -116.1   N/A   N/A     N/A     N/A      N/A   55.0  15.0 -115.7 Analysis Plot     
     20240807 020255  SSMISF16   15.7 -115.8   146   12%    1.41    1.41      N/A   55.0  15.8 -115.6 Analysis Plot     
     20240807 092118     AMSR2   17.0 -115.1   N/A   N/A     N/A     N/A      N/A   55.0  17.6 -116.8 Analysis Plot     
     20240807 134336  SSMISF17   17.2 -116.5    34   90%   17.14   32.14  >65 kts   60.0  17.6 -117.0 Analysis Plot     
     20240807 234022  SSMISF18   21.1 -119.2   N/A   N/A     N/A     N/A      N/A   50.0  19.8 -118.8 Analysis Plot     
     20240808 015742       GMI   20.1 -119.9    23   N/A    4.93   -4.93      N/A   50.0  19.9 -118.9 Analysis Plot     
     20240808 100319     AMSR2   21.3 -122.4   N/A   N/A     N/A     N/A      N/A   35.0  21.4 -122.9 Analysis Plot     
     20240808 121244  SSMISF18   21.2 -122.6   112   14%    2.06   -2.06      N/A   35.0  21.4 -123.1 Analysis Plot     
     20240808 152129       GMI   21.4 -123.3   N/A   N/A     N/A     N/A      N/A   35.0  21.2 -123.4 Analysis Plot     
     20240808 232844  SSMISF18   21.8 -124.6   168   N/A    2.09   -2.09      N/A   30.0  21.8 -124.6 Analysis Plot     
     20240809 022320  SSMISF17   21.9 -124.8   168   N/A    1.60   -1.60      N/A   30.0  21.9 -124.8 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.