Tropical Storm 23W

Passive Microwave (PMW) Intensity Information
Advanced Dvorak Technique (ADT)
Version 8.2.1


         Overpass     Inten           Ring    Ring          Wind           Forecast        Final        Target  
       Date    Time   Score  Meaning   Pct    Diam  BTdiff   Est   Sat    Lat    Lon    Lat    Lon    Lat    Lon              
     20151002 141713   -1.7      N/A   8.2%  77.77    1.73  30.0  AMSR2  19.2 -166.4   19.2 -166.4   18.8 -166.6 Analysis Plot     
     20151003 073700   -5.3      N/A  20.5% 288.86    5.31  40.0 SSMI19  19.2 -164.5   19.2 -164.5   19.2 -164.1 Analysis Plot     
     20151003 081800   -4.4      N/A  26.6% 333.30    4.35  40.0 SSMI18  19.2 -164.3   19.2 -164.3   19.1 -164.0 Analysis Plot     
     20151003 145944   -4.4      N/A   N/A     N/A    0.00  40.0  AMSR2  19.3 -162.4   19.3 -162.4   19.3 -161.9 Analysis Plot     
     20151003 165340   -4.7      N/A  23.3% 166.65    4.71  40.0 SSMI15  19.4 -162.1   19.4 -162.1   18.9 -161.8 Analysis Plot     
     20151003 201000   -3.3      N/A   5.9% 277.75    3.31  40.0 SSMI19  19.6 -161.8   19.6 -161.8   20.1 -161.8 Analysis Plot     
     20151003 205200   -4.1      N/A   N/A  211.09    4.07  40.0 SSMI18  19.6 -161.7   19.6 -161.7   20.0 -161.6 Analysis Plot     
     20151004 072300   -4.1      N/A   N/A     N/A    0.00  50.0 SSMI17  20.4 -158.9   20.4 -158.9   20.4 -158.0 Analysis Plot     
     20151004 072400   -4.1      N/A   N/A     N/A    0.00  50.0 SSMI19  21.0 -158.3   21.0 -158.3   21.3 -157.6 Analysis Plot     
     20151004 080700   -4.1      N/A   N/A     N/A    0.00  50.0 SSMI18  21.0 -158.1   21.0 -158.1   20.9 -157.7 Analysis Plot     
     20151004 163806   -4.1      N/A   N/A     N/A    0.00  50.0 SSMI15  21.5 -156.3   21.5 -156.3   21.4 -156.2 Analysis Plot     
     20151004 195700   -4.1      N/A   N/A     N/A    0.00  55.0 SSMI19  22.0 -155.4   22.0 -155.4   22.0 -155.0 Analysis Plot     
     20151004 204000   -4.1      N/A   N/A     N/A    0.00  55.0 SSMI18  22.0 -155.3   22.0 -155.3   22.0 -155.1 Analysis Plot     
     20151005 023801    5.6      N/A  13.7% 266.64    5.64  55.0  AMSR2  21.8 -154.1   21.8 -154.3   21.8 -154.3 Analysis Plot     
     20151005 071200    5.6      N/A   N/A     N/A    0.00  60.0 SSMI17  22.0 -153.6   22.0 -153.6   22.3 -153.6 Analysis Plot     
     20151005 152841    1.5      N/A  16.4% 199.98    1.52  60.0    GMI  22.7 -152.1   22.7 -152.2   22.7 -152.2 Analysis Plot     
     20151006 032058    2.2      N/A  37.0% 211.09    2.25  65.0  AMSR2  24.1 -151.0   23.9 -150.9   23.9 -150.9 Analysis Plot     
     20151006 084000    2.2      N/A   N/A     N/A    0.00  65.0 SSMI19  25.0 -150.6   25.0 -150.6   25.0 -151.0 Analysis Plot     
     20151006 092400    6.2      N/A  39.7% 233.31    6.25  65.0 SSMI18  25.1 -150.6   24.5 -150.8   24.5 -150.8 Analysis Plot     
     20151006 152901    8.1      N/A  26.0% 188.87    8.13  70.0  AMSR2  26.1 -150.7   26.0 -150.5   26.0 -150.5 Analysis Plot     
     20151006 215400    4.5      N/A  38.4% 222.20    4.53  70.0 SSMI18  28.0 -150.7   27.8 -150.9   27.8 -150.9 Analysis Plot     
     20151007 061028    3.6      N/A   N/A  233.31    3.58  65.0 SSMI15  30.0 -150.8   30.0 -150.8   30.4 -151.0 Analysis Plot     
     20151007 082900    3.6      N/A   N/A     N/A    0.00  65.0 SSMI19  32.9 -150.9   32.9 -150.9   32.2 -151.2 Analysis Plot     
     20151007 091400    3.6      N/A   N/A     N/A    0.00  65.0 SSMI18  33.2 -150.8   33.2 -150.8   32.5 -150.9 Analysis Plot     
     20151007 171301    3.6      N/A   N/A     N/A    0.00  60.0 SSMI15  36.1 -150.4   36.1 -150.4   37.4 -150.9 Analysis Plot     
     20151007 205200    2.0      N/A   N/A   66.66    1.95  60.0 SSMI17  38.3 -150.2   38.3 -150.2   39.7 -149.4 Analysis Plot     
     20151007 205200    2.0      N/A   N/A     N/A    0.00  60.0 SSMI19  38.8 -150.0   38.8 -150.0   39.8 -149.5 Analysis Plot     
     20151007 213800    2.0      N/A   N/A     N/A    0.00  60.0 SSMI18  39.1 -149.9   39.1 -149.9   40.0 -149.0 Analysis Plot     
     20151008 031305    2.0      N/A   N/A     N/A    0.00  60.0  AMSR2  40.7 -149.2   40.7 -149.2   39.3 -148.9 Analysis Plot     
     20151008 081800    2.0      N/A   N/A     N/A    0.00  60.0 SSMI17  42.3 -148.6   42.3 -148.6   41.2 -148.2 Analysis Plot     
     20151008 081800    2.0      N/A   N/A     N/A    0.00  60.0 SSMI19  42.7 -148.5   42.7 -148.5   41.2 -148.4 Analysis Plot     
     20151008 090400    2.0      N/A   N/A     N/A    0.00  60.0 SSMI18  43.0 -148.4   43.0 -148.4   41.4 -148.4 Analysis Plot

Legend:

  - Date/Time are determined from PMW imagery at Forecast (initial guess) Lat/Lon position.

  - Positive/Negative Latitude = North/South Hemisphere; Longitude = Western/Eastern Hemisphere.

  - "Ring Diam" value indicates the estimated surface eyewall diameter in km (the MI eyewall edge diameter minus 10 km).

  - "Ring Pct" is the percentage of the "ring" (eyewall inner boundary) that is 1) colder than the "hot spot" (warmest eye pixel) in the eye by 20K, or 2) the percentage that is a) colder than 232K and b) colder than the "hot spot" by 10K, whichever is greater.
  - Values are red if Ring % <= 65, yellow/brown if Ring % <= 85 and green if Ring % > 85.

  - "Tb diff" is the difference between the "hot spot" (warmest eye pixel) and the warmest pixel on the eyewall.

  - Intensity score are listed as negative, and not used, when the JTWC or NHC estimated Vmax is <55 kts in order to rule out weak but highly symmetric TCs.

  - Error messages in intensity scores: -920 is used when the hottest pixel in the eye is <200K, to prevent false positives; -930 means <85% of eyewall has observations/data.