Tropical Storm 12P

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              
     20180306 134908  -19.4      N/A  67.1%  55.55   19.44  35.0  AMSR2 -16.0 -168.7  -16.0 -168.9  -16.0 -168.9 Analysis Plot     
     20180306 214014   -6.3      N/A  57.5%  11.11    6.28  45.0    GMI -16.2 -168.0  -15.8 -167.7  -15.8 -167.7 Analysis Plot     
     20180307 020254 -930.0      N/A   N/A     N/A    0.00  50.0  AMSR2 -16.1 -167.4  -15.9 -167.4  -15.9 -167.4 Analysis Plot     
     20180307 143211   48.3  >65 kts 100.0%  22.22   33.27  65.0  AMSR2 -16.8 -166.4  -16.6 -166.4  -16.6 -166.4 Analysis Plot     
     20180307 192500   22.1  >65 kts 100.0%  11.11    7.11  90.0 SSMI17 -17.0 -166.1  -17.0 -165.9  -17.0 -165.9 Analysis Plot     
     20180308 024419   29.3  >65 kts  98.6%  11.11   14.28  90.0  AMSR2 -17.4 -165.5  -17.3 -165.5  -17.3 -165.5 Analysis Plot     
     20180308 081301    7.2      N/A  11.0% 111.10    7.25  95.0    GMI -17.8 -165.5  -17.5 -165.4  -17.5 -165.4 Analysis Plot     
     20180308 180400    3.5      N/A  20.5% 122.21    3.54  95.0 SSMI16 -18.0 -165.5  -17.6 -165.3  -17.6 -165.3 Analysis Plot     
     20180309 074500    9.6      N/A  80.8%  44.44    9.64  80.0 SSMI17 -18.5 -165.6  -18.9 -166.5  -18.9 -166.5 Analysis Plot     
     20180309 142032   44.8  >65 kts 100.0%  66.66   29.84  75.0  AMSR2 -19.5 -167.3  -19.9 -167.6  -19.9 -167.6 Analysis Plot     
     20180309 173900   63.8  >85 kts 100.0%  44.44   48.80  75.0 SSMI16 -19.8 -167.6  -20.1 -167.8  -20.1 -167.8 Analysis Plot     
     20180309 203931    7.5      N/A  35.6% 133.32    7.45  80.0    GMI -20.8 -168.5  -20.7 -168.8  -20.7 -168.8 Analysis Plot     
     20180310 023046   14.0      N/A  46.6%  44.44   13.96  80.0  AMSR2 -21.9 -169.9  -22.1 -169.8  -22.1 -169.8 Analysis Plot     
     20180310 073000 -930.0      N/A   N/A     N/A    0.00  70.0 SSMI18 -23.4 -171.0  -24.1 -171.4  -24.1 -171.4 Analysis Plot     
     20180310 184700 -930.0      N/A   N/A     N/A    0.00  55.0 SSMI18 -27.6 -173.5  -27.6 -173.5  -28.2 -173.4 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.