Tropical Storm 30Y_08

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              
     20211129 204220   -7.2      N/A  49.3% 177.76    7.22  30.0 SSMI18  11.8 -139.9   11.8 -139.9   12.1 -139.9 Analysis Plot     
     20211130 084307 -930.0      N/A   N/A     N/A    0.00  35.0 SSMI18  13.4 -139.2   12.5 -138.4   12.5 -138.4 Analysis Plot     
     20211130 112718 -930.0      N/A   N/A     N/A    0.00  35.0 SSMI17  13.5 -139.3   13.5 -139.3   13.6 -140.3 Analysis Plot     
     20211130 202021   -1.3      N/A  17.8% 122.21    1.33  40.0 SSMI18  13.1 -136.1   13.1 -136.1   13.9 -136.9 Analysis Plot     
     20211130 230400 -930.0      N/A   N/A     N/A    0.00  40.0 SSMI17  13.1 -136.0   13.1 -136.0   13.9 -136.8 Analysis Plot     
     20211201 040901    N/A      N/A   N/A     N/A     N/A  45.0  AMSR2  13.7 -135.8   14.1 -135.7   14.1 -135.7 Analysis Plot     
     20211201 110950  -15.1      N/A  31.5%  44.44   15.14  50.0 SSMI17  14.7 -135.4   14.7 -136.0   14.7 -136.0 Analysis Plot     
     20211201 201637   44.6  >65 kts 100.0% 133.32   29.62  55.0 SSMI18  15.3 -135.0   15.8 -135.6   15.8 -135.6 Analysis Plot     
     20211201 225959   14.9      N/A  39.7%  99.99   14.90  55.0 SSMI17  15.5 -134.9   15.5 -134.9   16.4 -135.6 Analysis Plot     
     20211202 081001   16.1      N/A  60.3%  66.66   16.09  70.0 SSMI16  17.2 -135.4   17.4 -135.9   17.4 -135.9 Analysis Plot     
     20211202 110032   68.8  >85 kts 100.0%  77.77   53.77  70.0 SSMI17  17.3 -135.4   17.7 -136.2   17.7 -136.2 Analysis Plot     
     20211202 195529   67.9  >85 kts 100.0%  66.66   52.89  80.0 SSMI18  19.3 -137.3   19.8 -137.7   19.8 -137.7 Analysis Plot     
     20211202 223717   75.1  >85 kts 100.0%  66.66   60.07  80.0 SSMI17  19.4 -137.3   20.4 -138.3   20.4 -138.3 Analysis Plot     
     20211203 035827   73.6  >85 kts 100.0%  66.66   58.63  85.0  AMSR2  20.9 -138.7   22.0 -140.0   22.0 -140.0 Analysis Plot     
     20211203 104659   15.1      N/A  58.9%  66.66   15.10 100.0 SSMI17  22.3 -140.2   22.3 -140.2   23.3 -141.5 Analysis Plot     
     20211203 195057    2.7      N/A   N/A   33.33    2.68  85.0 SSMI18  25.3 -143.9   25.3 -143.9   25.4 -143.7 Analysis Plot     
     20211203 223301    0.3      N/A   N/A   33.33     .30  85.0 SSMI17  25.6 -143.9   25.6 -143.9   25.9 -143.9 Analysis Plot     
     20211204 030540    5.0      N/A   N/A   11.11    5.02  75.0  AMSR2  27.4 -145.8   27.4 -145.8   27.6 -145.6 Analysis Plot     
     20211204 080308   -2.0      N/A   N/A   66.66    1.96  45.0 SSMI18  28.6 -147.6   28.6 -147.6   28.0 -147.1 Analysis Plot     
     20211204 100933 -930.0      N/A   N/A     N/A    0.00  45.0 SSMI17  28.7 -147.8   28.7 -147.8   28.3 -148.4 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.