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              
     20220131 210245    N/A      N/A   N/A     N/A     N/A  35.0 SSMI17 -15.0 -152.8  -15.0 -152.8  -14.8 -152.1 Analysis Plot     
     20220201 063956    N/A      N/A   N/A     N/A     N/A  35.0 SSMI18 -14.9 -153.1  -14.9 -153.1  -14.4 -152.6 Analysis Plot     
     20220201 084716   -0.1      N/A  43.8% 111.10     .08  35.0 SSMI18 -15.2 -153.4  -15.2 -153.4  -14.4 -152.6 Analysis Plot     
     20220201 105038    N/A      N/A   N/A     N/A     N/A  35.0 SSMI17 -15.2 -153.6  -15.2 -153.6  -14.9 -152.7 Analysis Plot     
     20220201 150417    N/A      N/A   N/A     N/A     N/A  35.0  AMSR2 -15.4 -154.2  -15.4 -154.2  -14.8 -153.5 Analysis Plot     
     20220201 182343    N/A      N/A   N/A     N/A     N/A  35.0 SSMI18 -15.4 -154.5  -15.4 -154.5  -14.8 -153.7 Analysis Plot     
     20220201 205015    N/A      N/A   N/A     N/A     N/A  35.0 SSMI17 -15.3 -154.0  -15.3 -154.0  -14.6 -153.0 Analysis Plot     
     20220202 031741   -5.3      N/A   1.4% 211.09    5.28  30.0  AMSR2 -15.0 -154.4  -15.0 -154.4  -14.9 -154.3 Analysis Plot     
     20220202 060949 -930.0      N/A   N/A     N/A    0.00  30.0 SSMI16 -15.0 -154.6  -15.0 -154.6  -15.3 -154.6 Analysis Plot     
     20220202 062715   -0.9      N/A  31.5%  11.11     .94  30.0 SSMI18 -15.0 -154.6  -15.0 -154.6  -14.6 -153.6 Analysis Plot     
     20220202 082945 -930.0      N/A   N/A     N/A    0.00  30.0 SSMI17 -15.2 -155.1  -15.2 -155.1  -14.1 -154.7 Analysis Plot     
     20220202 083423   -2.8      N/A   N/A  155.54    2.80  30.0 SSMI18 -15.1 -155.1  -15.1 -155.1  -15.4 -154.7 Analysis Plot     
     20220202 101342 -930.0      N/A   N/A     N/A    0.00  30.0 SSMI17 -15.2 -155.4  -15.2 -155.4  -14.6 -155.0 Analysis Plot     
     20220202 183337   -2.6      N/A   N/A  144.43    2.55  25.0 SSMI18 -15.9 -156.6  -15.9 -156.6  -16.2 -156.9 Analysis Plot     
     20220202 203756   -2.4      N/A   N/A  122.21    2.42  20.0 SSMI17 -16.2 -157.5  -16.2 -157.5  -16.4 -157.7 Analysis Plot     
     20220203 061401   -0.8      N/A   N/A  155.54     .77  15.0 SSMI18 -17.0 -159.4  -17.0 -159.4  -16.9 -158.8 Analysis Plot     
     20220203 075823    N/A      N/A   N/A     N/A     N/A  15.0 SSMI18 -17.1 -159.7  -17.1 -159.7  -17.1 -160.6 Analysis Plot     
     20220203 081803    N/A      N/A   N/A     N/A     N/A  20.0 SSMI17 -17.1 -159.3  -17.1 -159.3  -17.0 -159.1 Analysis Plot     
     20220203 145240    N/A      N/A   N/A     N/A     N/A  20.0  AMSR2 -17.9 -160.6  -17.9 -160.6  -18.2 -160.5 Analysis Plot     
     20220203 202824   -0.8      N/A   N/A  133.32     .80  20.0 SSMI17 -18.4 -161.8  -18.4 -161.8  -18.8 -161.1 Analysis Plot     
     20220204 030411    N/A      N/A   N/A     N/A     N/A  20.0  AMSR2 -19.0 -163.7  -19.0 -163.7  -19.0 -163.7 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.