Tropical Depression 04W

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              
     20150327 071700   -3.0      N/A  43.8% 177.76    3.01  30.0 SSMI17   7.0 -157.3    7.0 -157.3    7.3 -157.2 Analysis Plot     
     20150327 084100   -6.4      N/A  37.0% 211.09    6.41  30.0 SSMI18   7.1 -157.1    7.1 -157.1    7.2 -157.6 Analysis Plot     
     20150327 175700   -0.0      N/A   N/A     N/A    0.00  35.0 SSMI16   7.5 -155.9    7.5 -155.9    8.2 -155.6 Analysis Plot     
     20150327 195700   -0.0      N/A   N/A     N/A    0.00  35.0 SSMI17   7.6 -155.5    7.6 -155.5    7.8 -155.5 Analysis Plot     
     20150327 212100  -23.1      N/A  89.0%  33.33    8.06  35.0 SSMI18   7.6 -155.3    7.6 -155.3    7.9 -155.1 Analysis Plot     
     20150328 194300   47.7  >65 kts 100.0%  44.44   32.65  65.0 SSMI17   7.4 -152.5    7.4 -152.7    7.4 -152.7 Analysis Plot     
     20150328 211000   58.2  >65 kts 100.0%  44.44   43.17  65.0 SSMI18   7.4 -152.2    7.4 -152.6    7.4 -152.6 Analysis Plot     
     20150329 063200   52.9  >65 kts 100.0%  44.44   37.93  70.0 SSMI16   7.5 -150.6    7.7 -150.8    7.7 -150.8 Analysis Plot     
     20150329 095900 -930.0      N/A   N/A   55.55  1272.4  75.0 SSMI18   7.8 -149.9    7.9 -150.1    7.9 -150.1 Analysis Plot     
     20150329 191300 -930.0      N/A   N/A   88.88  1254.1  85.0 SSMI16   8.1 -147.9    8.3 -147.0    8.3 -147.0 Analysis Plot     
     20150330 081900   66.5  >85 kts 100.0%  55.55   51.51  90.0 SSMI17   8.8 -145.5    8.7 -145.5    8.7 -145.5 Analysis Plot     
     20150330 094600   56.3  >65 kts 100.0%  44.44   41.29  90.0 SSMI18   9.0 -144.7    8.8 -145.2    8.8 -145.2 Analysis Plot     
     20150330 173632   58.4  >65 kts 100.0%  44.44   43.41  95.0 SSMI15   9.2 -143.5    9.3 -143.8    9.3 -143.8 Analysis Plot     
     20150330 185900   73.6  >85 kts 100.0%  55.55   58.64 125.0 SSMI16   9.4 -143.5    9.4 -143.5    9.4 -143.5 Analysis Plot     
     20150330 222500   83.1  >85 kts 100.0%  44.44   68.06 125.0 SSMI18   9.6 -142.8    9.6 -142.8    9.6 -142.8 Analysis Plot     
     20150331 093500   85.6  >85 kts 100.0%  44.44   70.58 140.0 SSMI18  10.2 -140.7   10.1 -140.5   10.1 -140.5 Analysis Plot     
     20150331 204500   -0.0      N/A   N/A     N/A    0.00 140.0 SSMI17  10.5 -138.1   10.5 -138.1   10.5 -138.1 Analysis Plot     
     20150331 221300   79.0  >85 kts 100.0%  44.44   64.00 140.0 SSMI18  10.6 -137.8   10.6 -138.1   10.6 -138.1 Analysis Plot     
     20150401 073600   64.0  >85 kts 100.0%  44.44   49.01 130.0 SSMI16  11.4 -136.0   11.1 -136.3   11.1 -136.3 Analysis Plot     
     20150402 072300   63.3  >85 kts  94.5%  55.55   48.26 115.0 SSMI16  12.9 -133.2   12.9 -133.2   12.9 -133.2 Analysis Plot     
     20150402 105200   70.3  >85 kts 100.0%  77.77   55.29 115.0 SSMI18  13.2 -132.5   13.2 -132.8   13.2 -132.8 Analysis Plot     
     20150402 195900   10.0      N/A  19.2%  44.44   10.01 100.0 SSMI16  13.8 -131.6   14.0 -131.7   14.0 -131.7 Analysis Plot     
     20150402 215900    5.4      N/A  13.7%  55.55    5.42 100.0 SSMI17  14.0 -131.2   14.0 -131.2   14.0 -131.2 Analysis Plot     
     20150403 071100   -0.0      N/A   N/A     N/A    0.00  85.0 SSMI16  14.1 -129.9   14.0 -129.9   14.0 -129.9 Analysis Plot     
     20150403 104000    5.9      N/A  21.9%  77.77    5.95  85.0 SSMI18  14.3 -129.3   14.0 -129.0   14.0 -129.0 Analysis Plot     
     20150403 184144 -930.0      N/A   N/A  155.54  1265.4  85.0 SSMI15  14.6 -127.9   14.6 -127.9   13.5 -128.7 Analysis Plot     
     20150403 194700    5.8      N/A  83.6%  33.33    5.82  80.0 SSMI16  14.5 -127.4   14.5 -127.4   14.6 -127.5 Analysis Plot     
     20150403 214500   29.7  >65 kts  91.8%  33.33   14.66  80.0 SSMI17  14.7 -127.0   14.7 -127.0   14.6 -126.9 Analysis Plot     
     20150403 231600   10.2      N/A  83.6%  33.33   10.24  80.0 SSMI18  14.8 -126.7   14.8 -126.7   14.6 -126.6 Analysis Plot     
     20150404 230400 -930.0      N/A   N/A  233.31  1283.7  55.0 SSMI18  16.3 -122.4   16.3 -122.4   16.1 -121.8 Analysis Plot     
     20150405 102700 -930.0      N/A   N/A  333.30  1283.5  35.0 SSMI17  17.4 -120.9   17.4 -120.9   16.9 -121.3 Analysis Plot     
     20150405 230000   -1.1      N/A   N/A   44.44    1.09  25.0 SSMI17  18.8 -118.6   18.8 -118.6   19.2 -117.7 Analysis Plot     
     20150406 114600 -930.0      N/A   N/A  288.86  1275.5  25.0 SSMI18  19.9 -117.2   19.9 -117.2   19.8 -117.7 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.