Tropical Storm 18P

Passive Microwave (PMW) Intensity Information
Advanced Dvorak Technique (ADT)
Version 8.1.5


         Overpass     Inten           Ring    Ring          Wind           Forecast        Final        Target  
       Date    Time   Score  Meaning   Pct    Diam  BTdiff   Est   Sat    Lat    Lon    Lat    Lon    Lat    Lon              
     20140309 194233 -930.0      N/A   N/A  111.10  1269.1  35.0   TRMM -14.1 -167.3  -14.1 -167.3  -13.1 -167.1 Analysis Plot     
     20140309 204700   -0.0      N/A   N/A     N/A    0.00  35.0 SSMI18 -14.2 -167.4  -14.2 -167.4  -13.8 -166.1 Analysis Plot     
     20140310 052600   -0.0      N/A   N/A     N/A    0.00  35.0 SSMI16 -14.7 -167.7  -14.7 -167.7  -14.4 -166.5 Analysis Plot     
     20140310 062300 -930.0      N/A   N/A  199.98  1278.4  35.0 SSMI17 -14.8 -167.8  -14.8 -167.8  -15.2 -167.8 Analysis Plot     
     20140310 092400   -0.0      N/A   N/A     N/A    0.00  45.0 SSMI18 -15.0 -166.7  -15.0 -166.7  -15.1 -166.2 Analysis Plot     
     20140310 191500 -930.0      N/A   N/A  199.98  1253.5  45.0 SSMI17 -15.3 -166.4  -15.3 -166.4  -15.7 -166.2 Analysis Plot     
     20140310 203500   -0.0      N/A   N/A     N/A    0.00  45.0 SSMI18 -15.3 -166.4  -15.3 -166.4  -15.7 -167.2 Analysis Plot     
     20140311 043613   -5.3      N/A  42.5%  33.33    5.31  45.0   TRMM -15.4 -166.9  -16.2 -167.3  -16.2 -167.3 Analysis Plot     
     20140311 091100   -0.6      N/A  41.1%  99.99     .56  50.0 SSMI18 -16.6 -168.5  -16.6 -168.5  -16.7 -168.8 Analysis Plot     
     20140311 192913    0.5      N/A  17.8%  99.99     .47  55.0   TRMM -17.1 -170.0  -17.1 -170.0  -17.4 -170.2 Analysis Plot     
     20140311 202300    4.0      N/A  31.5%  88.88    4.00  55.0 SSMI18 -17.3 -170.2  -17.3 -170.2  -17.3 -170.3 Analysis Plot     
     20140312 034120   10.1      N/A  47.9% 122.21   10.15  55.0   TRMM -17.9 -171.3  -18.2 -171.1  -18.2 -171.1 Analysis Plot     
     20140312 085800   54.7  >65 kts 100.0% 111.10   39.66  65.0 SSMI18 -19.2 -171.7  -19.3 -171.9  -19.3 -171.9 Analysis Plot     
     20140312 183542 -930.0      N/A   N/A  144.43  1284.4  70.0   TRMM -20.6 -173.4  -20.6 -173.4  -20.7 -173.1 Analysis Plot     
     20140312 201200   52.1  >65 kts 100.0% 111.10   37.09  70.0 SSMI18 -21.1 -173.6  -21.0 -173.4  -21.0 -173.4 Analysis Plot     
     20140313 024618 -930.0      N/A   N/A   55.55  1271.3  70.0   TRMM -22.7 -173.9  -23.3 -173.9  -23.3 -173.9 Analysis Plot     
     20140313 084400   -0.0      N/A   N/A     N/A    0.00  65.0 SSMI18 -24.0 -173.9  -24.0 -173.9  -25.4 -173.7 Analysis Plot     
     20140313 183900 -930.0      N/A   N/A  222.20  1276.8  50.0 SSMI17 -26.9 -173.1  -26.9 -173.1  -26.3 -173.3 Analysis Plot     
     20140313 191810   -0.8      N/A   N/A   11.11     .80  50.0   TRMM -26.9 -173.1  -26.9 -173.1  -26.5 -173.5 Analysis Plot     
     20140313 200100   -1.5      N/A   N/A   33.33    1.52  50.0 SSMI18 -27.2 -173.1  -27.2 -173.1  -26.9 -173.6 Analysis Plot     
     20140314 001228 -930.0      N/A   N/A  222.20  1283.3  50.0   TRMM -28.3 -172.7  -28.3 -172.7  -27.7 -173.1 Analysis Plot     
     20140314 040415   -1.9      N/A   N/A  222.20    1.94  50.0 SSMI15 -28.9 -172.6  -28.9 -172.6  -28.8 -173.3 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.