Tropical Storm 10L

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                 
     20251008 071933       GMI   13.3  -49.8   157    1%    1.67   -1.67      N/A   45.0  13.2  -50.2 Analysis Plot     
     20251008 163640     AMSR2   14.7  -53.3   N/A   N/A     N/A     N/A      N/A   50.0  14.3  -53.5 Analysis Plot     
     20251008 185116       GMI   14.5  -54.1   235    7%    0.45   -0.45      N/A   50.0  14.5  -54.0 Analysis Plot     
     20251009 171938     AMSR2   16.3  -59.8   N/A   N/A     N/A     N/A      N/A   55.0  16.2  -59.7 Analysis Plot     
     20251009 215855  SSMISF17   17.8  -61.5   N/A   N/A     N/A     N/A      N/A   55.0  17.5  -60.8 Analysis Plot     
     20251009 225230  SSMISF16   18.2  -61.5   N/A   N/A     N/A     N/A      N/A   55.0  17.6  -60.9 Analysis Plot     
     20251010 073055       GMI   19.2  -62.2   N/A   N/A     N/A     N/A      N/A   45.0  19.0  -62.2 Analysis Plot     
     20251010 103148  SSMISF17   19.7  -62.9   N/A   N/A     N/A     N/A      N/A   45.0  19.8  -62.8 Analysis Plot     
     20251010 112541  SSMISF16   19.9  -62.9   N/A   N/A     N/A     N/A      N/A   45.0  20.0  -62.9 Analysis Plot     
     20251010 203208  SSMISF18   21.5  -64.5   N/A   N/A     N/A     N/A      N/A   45.0  21.5  -63.6 Analysis Plot     
     20251010 214617  SSMISF17   21.0  -64.7   N/A   N/A     N/A     N/A      N/A   45.0  21.7  -63.6 Analysis Plot     
     20251010 223951  SSMISF16   23.0  -63.3   N/A   N/A     N/A     N/A      N/A   45.0  21.9  -63.7 Analysis Plot     
     20251011 061322     AMSR2   24.3  -63.3    46   75%    5.67   -5.67      N/A   50.0  23.7  -63.9 Analysis Plot     
     20251011 090240  SSMISF18   25.4  -65.0   N/A   N/A     N/A     N/A      N/A   50.0  25.0  -63.3 Analysis Plot     
     20251011 101622  SSMISF17   24.9  -64.9   N/A   N/A     N/A     N/A      N/A   50.0  25.4  -63.2 Analysis Plot     
     20251011 111015  SSMISF16   25.5  -64.7   N/A   N/A     N/A     N/A      N/A   50.0  25.5  -63.2 Analysis Plot     
     20251011 171033     AMSR2   26.2  -64.9   N/A   N/A     N/A     N/A      N/A   45.0  26.5  -63.1 Analysis Plot     
     20251011 181650       GMI   25.6  -61.9   N/A   N/A     N/A     N/A      N/A   45.0  26.6  -63.1 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.