Tropical Storm 15P

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              
     20200209 061112    N/A      N/A   N/A     N/A     N/A  35.0 SSMI18 -15.3 -163.6  -15.3 -163.6  -15.5 -164.2 Analysis Plot     
     20200209 143329 -930.0      N/A   N/A     N/A    0.00  40.0  AMSR2 -15.9 -163.7  -15.9 -163.7  -16.4 -164.0 Analysis Plot     
     20200209 183443    N/A      N/A   N/A     N/A     N/A  40.0 SSMI16 -16.0 -163.7  -16.0 -163.7  -16.5 -163.3 Analysis Plot     
     20200210 024610   27.3  >65 kts  98.6%  33.33   12.34  55.0  AMSR2 -17.2 -163.0  -17.1 -162.6  -17.1 -162.6 Analysis Plot     
     20200210 061859    N/A      N/A   N/A     N/A     N/A  55.0 SSMI15 -17.3 -163.0  -17.3 -163.0  -17.6 -163.6 Analysis Plot     
     20200210 073505   13.4      N/A  17.8% 122.21   13.45  55.0    GMI -17.5 -163.0  -17.4 -162.9  -17.4 -162.9 Analysis Plot     
     20200210 170436    5.9      N/A  64.4%  33.33    5.89  65.0 SSMI15 -17.9 -162.5  -18.1 -162.7  -18.1 -162.7 Analysis Plot     
     20200210 182139   11.2      N/A  46.6%  55.55   11.16  65.0 SSMI16 -18.0 -162.5  -18.2 -162.8  -18.2 -162.8 Analysis Plot     
     20200211 060024   16.0      N/A  13.7%  55.55   15.98  75.0 SSMI15 -19.2 -162.6  -19.6 -162.8  -19.6 -162.8 Analysis Plot     
     20200211 061745   14.4      N/A   N/A   55.55   14.37  75.0 SSMI16 -19.3 -162.6  -19.7 -162.7  -19.7 -162.7 Analysis Plot     
     20200211 142233   35.3  >65 kts 100.0%  44.44   20.25  75.0  AMSR2 -20.5 -162.6  -21.2 -162.9  -21.2 -162.9 Analysis Plot     
     20200211 165054   43.1  >65 kts 100.0%  66.66   28.10  75.0 SSMI15 -20.7 -162.5  -21.6 -162.7  -21.6 -162.7 Analysis Plot     
     20200211 180836   53.8  >65 kts 100.0%  88.88   38.78  75.0 SSMI18 -20.8 -162.5  -21.8 -162.9  -21.8 -162.9 Analysis Plot     
     20200212 023304    N/A      N/A   N/A     N/A     N/A  75.0  AMSR2 -22.7 -162.4  -22.7 -162.4  -22.7 -163.6 Analysis Plot     
     20200212 054238    2.1      N/A   9.6% 211.09    2.05  75.0 SSMI16 -23.1 -162.3  -23.1 -162.3  -23.3 -162.4 Analysis Plot     
     20200212 060712    1.9      N/A  15.1% 222.20    1.88  75.0 SSMI15 -22.9 -162.4  -22.9 -162.4  -23.1 -162.4 Analysis Plot     
     20200212 171356 -930.0      N/A   N/A     N/A    0.00  60.0    GMI -25.5 -161.4  -25.5 -161.4  -25.6 -161.8 Analysis Plot     
     20200212 174949    1.7      N/A   1.4% 222.20    1.71  60.0 SSMI16 -25.4 -161.4  -25.4 -161.4  -25.6 -161.8 Analysis Plot     
     20200212 191913    2.0      N/A   6.8% 222.20    2.02  60.0 SSMI18 -25.7 -161.3  -25.7 -161.3  -26.0 -161.7 Analysis Plot     
     20200213 055130    2.3      N/A   N/A  199.98    2.29  55.0 SSMI16 -28.8 -160.6  -28.8 -160.6  -28.6 -160.8 Analysis Plot     
     20200213 072448    2.5      N/A   N/A  199.98    2.51  55.0 SSMI18 -29.2 -160.4  -29.2 -160.4  -29.2 -160.8 Analysis Plot     
     20200213 173639    3.1      N/A   N/A  133.32    3.12  55.0 SSMI16 -31.6 -159.4  -31.6 -159.4  -31.6 -160.3 Analysis Plot     
     20200214 065803 -930.0      N/A   N/A     N/A    0.00  55.0 SSMI15 -34.2 -158.5  -34.2 -158.5  -34.1 -158.6 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.