Tropical Depression 03W

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              
     20210515 103621   -4.1      N/A   N/A   22.22    4.07  25.0 SSMI15   9.4 -118.4    9.4 -118.4    8.6 -118.4 Analysis Plot     
     20220409 045100   -2.6      N/A  41.1%  66.66    2.65  25.0  AMSR2  10.9 -126.8   10.9 -126.8   11.1 -126.3 Analysis Plot     
     20220409 090418 -930.0      N/A   N/A     N/A    0.00  25.0 SSMI16  10.8 -127.0   10.8 -127.0   10.7 -127.2 Analysis Plot     
     20220409 093928   -2.0      N/A  12.3% 244.42    1.96  25.0 SSMI18  10.8 -127.0   10.8 -127.0   10.8 -127.2 Analysis Plot     
     20220409 170626   -4.4      N/A  20.5% 155.54    4.42  25.0  AMSR2  11.1 -126.7   11.1 -126.7   11.1 -126.5 Analysis Plot     
     20220409 211726   -1.7      N/A  32.9% 222.20    1.68  30.0 SSMI18  11.0 -126.2   11.0 -126.2   10.6 -125.9 Analysis Plot     
     20220410 085106   -3.5      N/A   1.4% 199.98    3.46  35.0 SSMI16  10.7 -125.3   10.7 -125.3   11.5 -125.6 Analysis Plot     
     20220410 092631   -1.6      N/A   1.4% 111.10    1.57  35.0 SSMI18  10.7 -125.3   10.7 -125.3   11.3 -125.4 Analysis Plot     
     20220410 104711 -930.0      N/A   N/A     N/A    0.00  35.0 SSMI17  10.7 -125.3   10.7 -125.3   11.8 -125.0 Analysis Plot     
     20220410 175049 -930.0      N/A   N/A     N/A    0.00  35.0  AMSR2  10.8 -124.8   10.8 -124.8   11.1 -124.3 Analysis Plot     
     20220410 210420 -930.0      N/A   N/A     N/A    0.00  30.0 SSMI18  11.0 -124.6   11.0 -124.6   12.2 -124.8 Analysis Plot     
     20220411 044026 -930.0      N/A   N/A     N/A    0.00  25.0  AMSR2  11.5 -124.1   11.5 -124.1   11.9 -122.7 Analysis Plot     
     20220411 083803 -930.0      N/A   N/A     N/A    0.00  25.0 SSMI16  11.6 -124.0   11.6 -124.0   12.0 -125.0 Analysis Plot     
     20220411 104407   -3.6      N/A   N/A   99.99    3.56  25.0 SSMI17  11.3 -124.0   11.3 -124.0   12.1 -124.9 Analysis Plot     
     20220411 165523 -930.0      N/A   N/A     N/A    0.00  25.0  AMSR2  11.4 -124.1   11.4 -124.1   11.1 -123.9 Analysis Plot     
     20220411 205042   -4.0      N/A  19.1% 133.32    4.03  25.0 SSMI18  11.4 -124.2   11.4 -124.2   12.1 -124.6 Analysis Plot     
     20220411 215701   -2.2      N/A   N/A  122.21    2.20  25.0 SSMI16  11.4 -124.2   11.4 -124.2   12.0 -124.4 Analysis Plot     
     20220411 235225 -930.0      N/A   N/A     N/A    0.00  25.0 SSMI17  11.4 -124.2   11.4 -124.2   11.6 -124.6 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.