Tropical Storm 15S

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              
     20170406 090200   -0.0      N/A   N/A     N/A    0.00  35.0 SSMI16 -13.4 -110.8  -13.4 -110.8  -14.2 -110.4 Analysis Plot     
     20170406 231400  -58.7      N/A 100.0%  33.33   43.74  40.0 SSMI18 -14.9 -110.5  -14.7 -110.5  -14.7 -110.5 Analysis Plot     
     20170407 025256  -81.0      N/A 100.0%  33.33   66.02  40.0    GMI -15.1 -110.4  -15.0 -110.4  -15.0 -110.4 Analysis Plot     
     20170407 113900   50.8  >65 kts 100.0%  22.22   35.84  95.0 SSMI17 -15.6 -110.2  -15.7 -110.5  -15.7 -110.5 Analysis Plot     
     20170407 115100   45.7  >65 kts 100.0%  22.22   30.72  95.0 SSMI18 -15.6 -110.1  -15.8 -110.4  -15.8 -110.4 Analysis Plot     
     20170407 200334   39.1  >65 kts 100.0%  22.22   24.10 130.0 SSMI15 -16.1 -110.3  -15.9 -110.5  -15.9 -110.5 Analysis Plot     
     20170407 230200   19.7      N/A  98.6%  55.55    4.66 130.0 SSMI18 -16.3 -110.1  -16.3 -110.5  -16.3 -110.5 Analysis Plot     
     20170408 091638 -930.0      N/A   N/A     N/A    0.00  95.0 SSMI15 -16.7 -109.8  -16.7 -109.8  -17.1 -109.3 Analysis Plot     
     20170408 112500   43.5  >65 kts 100.0%  11.11   28.51  95.0 SSMI17 -16.8 -109.5  -16.8 -109.6  -16.8 -109.6 Analysis Plot     
     20170408 113800   35.4  >65 kts 100.0%  11.11   20.38  95.0 SSMI18 -16.8 -109.5  -16.8 -109.5  -16.8 -109.5 Analysis Plot     
     20170408 132642   54.3  >65 kts 100.0%  22.22   39.32  95.0    GMI -16.8 -109.3  -16.7 -109.3  -16.7 -109.3 Analysis Plot     
     20170408 201736   26.1  >65 kts  95.9%  33.33   11.09  90.0 SSMI15 -16.9 -108.5  -16.7 -108.8  -16.7 -108.8 Analysis Plot     
     20170408 223700   35.5  >65 kts 100.0%  22.22   20.47  90.0 SSMI17 -17.1 -108.1  -16.9 -108.6  -16.9 -108.6 Analysis Plot     
     20170408 225100   30.6  >65 kts 100.0%  22.22   15.55  90.0 SSMI18 -17.1 -108.1  -16.8 -108.6  -16.8 -108.6 Analysis Plot     
     20170409 024349   39.8  >65 kts 100.0%  22.22   24.79  90.0    GMI -17.2 -107.5  -17.2 -108.1  -17.2 -108.1 Analysis Plot     
     20170409 085845   -0.0      N/A   N/A     N/A    0.00  85.0 SSMI15 -17.5 -107.3  -17.5 -107.6  -17.5 -107.6 Analysis Plot     
     20170409 095500 -930.0      N/A   N/A     N/A    0.00  85.0 SSMI16 -17.5 -107.2  -17.5 -107.2  -17.8 -107.7 Analysis Plot     
     20170409 111100    7.6      N/A  17.8% 211.09    7.59  85.0 SSMI17 -17.7 -106.8  -17.7 -106.8  -17.8 -106.8 Analysis Plot     
     20170409 112600    8.2      N/A  15.1% 222.20    8.19  85.0 SSMI18 -17.7 -106.8  -17.7 -106.8  -17.9 -106.7 Analysis Plot     
     20170409 200455 -930.0      N/A   N/A     N/A    0.00  85.0 SSMI15 -18.1 -105.6  -17.8 -106.7  -17.8 -106.7 Analysis Plot     
     20170410 094200   -0.0      N/A   N/A     N/A    0.00  40.0 SSMI16 -18.8 -102.7  -18.8 -102.7  -18.9 -103.3 Analysis Plot     
     20170410 131543   -6.8      N/A   N/A  122.21    6.85  40.0    GMI -19.2 -101.8  -19.2 -101.8  -19.0 -101.7 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.