Tropical Depression 03E

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              
     20210612 214953   -4.4      N/A  37.0%  55.55    4.35  30.0  AMSR2  11.8  123.6   11.8  123.6   12.0  124.2 Analysis Plot     
     20210613 003736   -9.2      N/A  37.0%  77.77    9.15  30.0 SSMI18  11.8  123.9   11.8  123.9   11.8  124.7 Analysis Plot     
     20210613 021552   -8.8      N/A  37.0%  77.77    8.83  30.0 SSMI18  11.9  124.1   11.9  124.1   11.9  124.7 Analysis Plot     
     20210613 100455   -5.4      N/A  31.5% 133.32    5.44  40.0  AMSR2  11.9  125.4   11.9  125.4   11.9  125.6 Analysis Plot     
     20210613 141952   -3.8      N/A  28.8% 188.87    3.77  40.0 SSMI18  11.8  125.7   11.8  125.7   11.8  126.0 Analysis Plot     
     20210614 002510   -2.3      N/A   1.4%  99.99    2.27  45.0 SSMI18  11.6  126.8   11.6  126.8   11.5  126.8 Analysis Plot     
     20210614 010750   -2.3      N/A   N/A  111.10    2.31  45.0 SSMI16  11.6  126.9   11.6  126.9   11.3  126.8 Analysis Plot     
     20210614 020343   -2.4      N/A   1.4%  99.99    2.39  45.0 SSMI18  11.6  127.0   11.6  127.0   11.5  126.7 Analysis Plot     
     20210614 032033   -2.7      N/A   N/A  133.32    2.74  40.0 SSMI17  11.6  127.1   11.6  127.1   11.5  127.4 Analysis Plot     
     20210614 045634   -2.7      N/A   N/A  122.21    2.75  40.0 SSMI17  11.6  127.2   11.6  127.2   11.5  127.4 Analysis Plot     
     20210614 140733   -5.7      N/A  17.8% 111.10    5.66  35.0 SSMI18  11.3  128.1   11.3  128.1   11.4  129.0 Analysis Plot     
     20210614 145953   -4.0      N/A   N/A  111.10    3.98  35.0 SSMI16  11.3  128.2   11.3  128.2   11.2  129.0 Analysis Plot     
     20210614 153443   -6.0      N/A  34.2%  77.77    5.96  35.0    GMI  11.3  128.7   11.3  128.7   10.9  129.1 Analysis Plot     
     20210614 213849 -930.0      N/A   N/A     N/A    0.00  30.0  AMSR2  10.9  130.0   10.9  130.0   10.6  129.9 Analysis Plot     
     20210615 004804   -3.2      N/A   6.8%  22.22    3.25  30.0 SSMI16  10.8  130.4   10.8  130.4   10.4  130.6 Analysis Plot     
     20210615 022806   -3.0      N/A  15.1%  44.44    3.01  30.0 SSMI16  10.7  130.6   10.7  130.6   10.5  130.5 Analysis Plot     
     20210615 030638    N/A      N/A   N/A     N/A     N/A  30.0 SSMI17  10.5  130.7   10.5  130.7   10.3  131.0 Analysis Plot     
     20210615 044309    N/A      N/A   N/A     N/A     N/A  30.0 SSMI17  10.5  130.9   10.5  130.9   10.3  131.0 Analysis Plot     
     20210615 135508 -930.0      N/A   N/A     N/A    0.00  30.0 SSMI18  10.1  132.3   10.1  132.3    9.3  132.4 Analysis Plot     
     20210615 144655   -2.6      N/A   N/A   33.33    2.61  30.0 SSMI16   9.8  132.5    9.8  132.5   10.0  132.5 Analysis Plot     
     20210615 164654   -2.8      N/A   N/A  222.20    2.82  30.0 SSMI17  10.0  132.7   10.0  132.7   10.1  133.1 Analysis Plot     
     20210616 013936   -3.4      N/A   N/A   33.33    3.41  30.0 SSMI18   9.7  134.0    9.7  134.0    9.7  134.4 Analysis Plot     
     20210616 031758   -3.7      N/A   N/A   44.44    3.73  30.0 SSMI18   9.6  134.1    9.6  134.1    9.7  134.4 Analysis Plot     
     20210616 103639   -1.3      N/A   N/A   55.55    1.29  30.0  AMSR2   9.2  135.2    9.2  135.2    9.5  135.2 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.