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              
     20190315 075146 -930.0      N/A   N/A     N/A    0.00  25.0 SSMI16   8.0 -142.8    8.0 -142.8    7.2 -143.2 Analysis Plot     
     20190315 100815   -0.2      N/A  23.3%  66.66     .18  25.0 SSMI18   8.2 -142.2    8.2 -142.2    8.2 -142.9 Analysis Plot     
     20190315 193050   -2.2      N/A  47.9%  55.55    2.18  25.0 SSMI17   7.9 -140.8    7.9 -140.8    7.9 -141.1 Analysis Plot     
     20190315 212531 -930.0      N/A   N/A     N/A    0.00  25.0    GMI   7.8 -140.2    7.8 -140.2    7.8 -139.9 Analysis Plot     
     20190315 214508 -930.0      N/A   N/A     N/A    0.00  25.0 SSMI18   7.8 -140.3    7.8 -140.3    8.3 -140.3 Analysis Plot     
     20190316 085531 -930.0      N/A   N/A     N/A    0.00  25.0    GMI   7.6 -138.2    7.6 -138.2    7.6 -137.8 Analysis Plot     
     20190316 095545   -3.0      N/A   2.7%  66.66    2.97  25.0 SSMI18   7.6 -138.2    7.6 -138.2    7.8 -137.9 Analysis Plot     
     20190316 113709   -0.8      N/A   9.6%  77.77     .84  25.0 SSMI17   7.6 -137.9    7.6 -137.9    7.3 -137.9 Analysis Plot     
     20190316 184231   -1.9      N/A  26.0% 111.10    1.90  25.0 SSMI15   7.2 -136.3    7.2 -136.3    7.9 -136.0 Analysis Plot     
     20190316 213255   -0.2      N/A  27.4% 133.32     .17  25.0 SSMI18   7.4 -135.8    7.4 -135.8    7.2 -135.7 Analysis Plot     
     20190316 230354 -930.0      N/A   N/A     N/A    0.00  25.0 SSMI17   7.4 -135.5    7.4 -135.5    6.5 -134.7 Analysis Plot     
     20190317 112353    N/A      N/A   N/A     N/A     N/A  25.0 SSMI17   7.3 -133.1    7.3 -133.1    7.6 -133.1 Analysis Plot     
     20190317 181907 -930.0      N/A   N/A     N/A    0.00  25.0 SSMI15   7.2 -131.6    7.2 -131.6    5.5 -132.4 Analysis Plot     
     20190317 212947 -930.0      N/A   N/A     N/A    0.00  25.0 SSMI18   7.3 -131.3    7.3 -131.3    6.8 -130.7 Analysis Plot     
     20190317 225107   -1.4      N/A   4.1%  99.99    1.45  25.0 SSMI17   7.3 -131.0    7.3 -131.0    6.3 -131.6 Analysis Plot     
     20190318 081438   -0.1      N/A   N/A   33.33     .07  20.0 SSMI15   6.6 -128.5    6.6 -128.5    7.0 -128.6 Analysis Plot     
     20190318 111158   -0.6      N/A   N/A   33.33     .58  20.0 SSMI18   6.6 -127.7    6.6 -127.7    6.9 -127.7 Analysis Plot     
     20190318 165502    N/A      N/A   N/A     N/A     N/A  20.0  AMSR2   6.5 -126.3    6.5 -126.3    6.6 -126.8 Analysis Plot     
     20190318 203057 -930.0      N/A   N/A     N/A    0.00  20.0 SSMI16   6.5 -125.9    6.5 -125.9    5.9 -126.5 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.