Tropical Depression 04R

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              
     20201220 124243    N/A      N/A   N/A     N/A     N/A  20.0 SSMI16 -12.6  -65.5  -12.6  -65.5  -13.8  -65.4 Analysis Plot     
     20201220 125738    N/A      N/A   N/A     N/A     N/A  20.0 SSMI18 -12.6  -65.5  -12.6  -65.5  -13.8  -65.3 Analysis Plot     
     20201220 204853    N/A      N/A   N/A     N/A     N/A  20.0  AMSR2 -12.9  -65.4  -12.9  -65.4  -12.5  -65.0 Analysis Plot     
     20201221 123255   -1.6      N/A   6.8% 199.98    1.62  25.0 SSMI16 -13.7  -63.9  -13.7  -63.9  -13.8  -63.7 Analysis Plot     
     20201221 213212    N/A      N/A   N/A     N/A     N/A  25.0  AMSR2 -13.8  -62.6  -13.8  -62.6  -14.6  -62.3 Analysis Plot     
     20201223 011758 -930.0      N/A   N/A     N/A    0.00  25.0 SSMI15 -13.9  -61.2  -13.9  -61.2  -15.1  -60.9 Analysis Plot     
     20201221 213212    N/A      N/A   N/A     N/A     N/A  25.0  AMSR2 -13.8  -62.6  -13.8  -62.6  -14.6  -62.3 Analysis Plot     
     20201223 143228 -930.0      N/A   N/A     N/A    0.00  30.0 SSMI15 -14.9  -60.4  -14.9  -60.4  -15.9  -60.5 Analysis Plot     
     20201223 211956   -5.4      N/A   5.5% 133.32    5.45  30.0  AMSR2 -14.6  -59.8  -14.6  -59.8  -14.6  -59.8 Analysis Plot     
     20201224 004933   -7.5      N/A   N/A  222.20    7.48  30.0 SSMI15 -14.6  -59.6  -14.6  -59.6  -14.5  -59.7 Analysis Plot     
     20201224 011333   -3.2      N/A   N/A  155.54    3.17  30.0 SSMI16 -14.5  -59.8  -14.5  -59.8  -14.7  -60.0 Analysis Plot     
     20201224 013250 -930.0      N/A   N/A     N/A    0.00  30.0 SSMI18 -14.5  -59.7  -14.5  -59.7  -15.5  -59.9 Analysis Plot     
     20201224 093343   -5.6      N/A  16.4% 166.65    5.55  40.0  AMSR2 -14.9  -58.9  -14.9  -58.9  -15.4  -58.4 Analysis Plot     
     20201224 134501    N/A      N/A   N/A     N/A     N/A  40.0 SSMI15 -14.9  -58.6  -14.9  -58.6  -14.8  -58.7 Analysis Plot     
     20201225 012015   -0.4      N/A  49.3%  22.22     .40  40.0 SSMI18 -15.7  -56.4  -15.7  -56.4  -16.5  -57.0 Analysis Plot     
     20201225 101625    N/A      N/A   N/A     N/A     N/A  40.0  AMSR2 -16.1  -55.0  -16.1  -55.0  -17.2  -55.5 Analysis Plot     
     20201225 131546    N/A      N/A   N/A     N/A     N/A  35.0 SSMI18 -16.2  -54.9  -16.2  -54.9  -17.4  -54.7 Analysis Plot     
     20201225 132622    N/A      N/A   N/A     N/A     N/A  35.0 SSMI16 -16.2  -54.9  -16.2  -54.9  -17.3  -54.7 Analysis Plot     
     20201226 130905 -930.0      N/A   N/A     N/A    0.00  30.0 SSMI16 -16.3  -51.7  -16.3  -51.7  -16.8  -51.1 Analysis Plot     
     20201226 171016 -930.0      N/A   N/A     N/A    0.00  30.0    GMI -16.9  -51.0  -17.4  -49.8  -17.4  -49.8 Analysis Plot     
     20201226 215203  -11.5      N/A  47.9% 155.54   11.45  30.0  AMSR2 -17.9  -48.9  -17.8  -49.2  -17.8  -49.2 Analysis Plot     
     20201227 023717   -1.6      N/A  13.2% 177.76    1.61  30.0 SSMI18 -17.8  -49.0  -17.8  -49.0  -18.5  -48.2 Analysis Plot     
     20201227 100452 -930.0      N/A   N/A     N/A    0.00  30.0  AMSR2 -18.1  -47.5  -18.1  -47.5  -18.1  -47.2 Analysis Plot     
     20201228 143142    N/A      N/A   N/A     N/A     N/A  30.0 SSMI18 -20.4  -42.5  -20.4  -42.5  -20.2  -43.0 Analysis Plot     
     20201229 014754  -12.9      N/A  80.8%  55.55   12.94  40.0 SSMI16 -19.7  -40.9  -19.8  -41.1  -19.8  -41.1 Analysis Plot     
     20201229 020000   -8.4      N/A  56.2%  33.33    8.36  40.0 SSMI18 -19.7  -40.9  -19.8  -41.0  -19.8  -41.0 Analysis Plot     
     20201229 042405   -2.5      N/A  38.4%  44.44    2.46  40.0    GMI -19.8  -40.4  -19.7  -39.9  -19.7  -39.9 Analysis Plot     
     20201229 112942  -39.4      N/A 100.0%  22.22   24.40  50.0  AMSR2 -19.7  -38.5  -19.5  -38.5  -19.5  -38.5 Analysis Plot     
     20201229 141618   -2.7      N/A  57.5%  33.33    2.66  50.0 SSMI16 -19.6  -38.0  -19.4  -38.2  -19.4  -38.2 Analysis Plot     
     20201229 174224 -930.0      N/A   N/A     N/A    0.00  50.0    GMI -19.6  -37.0  -19.6  -37.0  -18.8  -37.2 Analysis Plot     
     20201230 152933    N/A      N/A   N/A     N/A     N/A  55.0 SSMI18 -19.8  -32.3  -19.8  -32.3  -19.8  -32.3 Analysis Plot     
     20201231 031333    N/A      N/A   N/A     N/A     N/A  55.0 SSMI18 -20.4  -29.3  -20.4  -29.3  -20.0  -28.0 Analysis Plot     
     20201231 033342    N/A      N/A   N/A     N/A     N/A  55.0 SSMI16 -20.4  -29.3  -20.4  -29.3  -20.1  -28.0 Analysis Plot     
     20201231 041355    N/A      N/A   N/A     N/A     N/A  55.0    GMI -20.5  -28.8  -20.5  -28.8  -20.0  -27.6 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.