Tropical Depression 09P

Passive Microwave (PMW) Intensity Information
Hurricane Intensity Estimation (HIE) Algorithm
Version 9.0
 

         Overpass     Inten           Ring    Ring          Wind           Forecast        Final        Target  
       Date    Time   Score  Meaning   Pct    Diam  BTdiff   Est   Sat    Lat    Lon    Lat    Lon    Lat    Lon              
     20190102 191536    N/A      N/A   N/A     N/A     N/A  35.0 SSMI17 -11.1 -177.3  -11.1 -177.3  -11.8 -177.1 Analysis Plot     
     20190103 042257    N/A      N/A   N/A     N/A     N/A  35.0    GMI -11.7 -178.1  -11.7 -178.1  -12.5 -178.3 Analysis Plot     
     20190103 071449 -930.0      N/A   N/A     N/A    0.00  35.0 SSMI17 -11.8 -178.1  -11.8 -178.1  -13.1 -178.0 Analysis Plot     
     20190103 130619    N/A      N/A   N/A     N/A     N/A  40.0  AMSR2 -13.6 -177.9  -14.0 -177.8  -14.0 -177.8 Analysis Plot     
     20190104 012043 -930.0      N/A   N/A     N/A    0.00  50.0  AMSR2 -14.9 -177.2  -14.9 -177.2  -14.4 -178.4 Analysis Plot     
     20190104 065352   -1.6      N/A   5.5% 133.32    1.65  50.0 SSMI17 -15.0 -177.3  -15.0 -177.3  -14.8 -178.3 Analysis Plot     
     20190104 074942    N/A      N/A   N/A     N/A     N/A  50.0 SSMI18 -15.0 -177.3  -15.0 -177.3  -14.8 -177.9 Analysis Plot     
     20190104 145734    N/A      N/A   N/A     N/A     N/A  40.0    GMI -13.9 -176.0  -13.9 -176.0  -13.8 -175.5 Analysis Plot     
     20190104 160808   -8.8      N/A  16.4%  22.22    8.79  40.0 SSMI15 -13.9 -176.0  -13.9 -176.0  -13.7 -175.7 Analysis Plot     
     20190105 020233   -3.8      N/A  50.7%  22.22    3.82  30.0  AMSR2 -13.6 -176.4  -13.6 -176.4  -13.6 -177.4 Analysis Plot     
     20190105 041856    N/A      N/A   N/A     N/A     N/A  30.0 SSMI16 -13.6 -176.5  -13.6 -176.5  -12.9 -176.5 Analysis Plot     
     20190105 051231   -4.1      N/A  26.0%  88.88    4.08  30.0 SSMI15 -13.6 -176.5  -13.6 -176.5  -13.7 -177.0 Analysis Plot     
     20190105 055043    N/A      N/A   N/A     N/A     N/A  30.0 SSMI18 -13.6 -176.6  -13.7 -177.0  -13.7 -177.0 Analysis Plot     
     20190106 032106    N/A      N/A   N/A     N/A     N/A  35.0    GMI -14.9 -179.2  -14.9 -179.2  -15.2 -180.1 Analysis Plot     
     20190106 041357    N/A      N/A   N/A     N/A     N/A  35.0 SSMI16 -14.9 -179.2  -14.9 -179.2  -15.4 -180.2 Analysis Plot     
     20190106 044236    N/A      N/A   N/A     N/A     N/A  35.0 SSMI15 -14.9 -179.2  -14.9 -179.2  -15.2 -180.3 Analysis Plot     
     20190106 052307    N/A      N/A   N/A     N/A     N/A  35.0 SSMI18 -15.1 -179.4  -15.1 -179.4  -15.8 -180.7 Analysis Plot     
     20190106 150554  -24.9      N/A  86.3%  44.44    9.95  45.0 SSMI15 -16.9  177.4  -16.9  177.4  -17.5  177.3 Analysis Plot     
     20190107 034306    N/A      N/A   N/A     N/A     N/A  45.0 SSMI16 -19.6  176.7  -19.6  176.7  -20.2  176.9 Analysis Plot     
     20190107 135339   -5.6      N/A   N/A  177.76    5.57  40.0    GMI -20.2  177.9  -20.2  177.9  -20.0  178.3 Analysis Plot     
     20190107 150311   -1.3      N/A   N/A  188.87    1.26  40.0 SSMI15 -20.3  178.0  -20.3  178.0  -20.0  178.3 Analysis Plot     
     20190107 194946 -930.0      N/A   N/A     N/A    0.00  30.0 SSMI17 -20.7  178.6  -20.7  178.6  -21.0  178.3 Analysis Plot     
     20190108 031208    N/A      N/A   N/A     N/A     N/A  30.0    GMI -21.2  179.7  -21.2  179.7  -21.1  178.9 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.