Tropical Storm 30Y_23

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              
     20191221 161826 -930.0      N/A   N/A     N/A    0.00  30.0  AMSR2   6.3 -140.2    6.3 -140.2    5.9 -140.1 Analysis Plot     
     20191221 185405 -930.0      N/A   N/A     N/A    0.00  30.0 SSMI15   6.3 -140.0    6.3 -140.0    6.1 -140.1 Analysis Plot     
     20191222 044503 -930.0      N/A   N/A     N/A    0.00  35.0  AMSR2   8.4 -137.5    8.4 -137.5    9.4 -137.6 Analysis Plot     
     20191222 090636   -0.7      N/A  65.8%  55.55     .71  35.0 SSMI16   8.7 -137.1    8.7 -137.1    8.7 -137.3 Analysis Plot     
     20191222 100658 -930.0      N/A   N/A     N/A    0.00  35.0 SSMI18   8.8 -136.9    8.8 -136.9    8.1 -136.1 Analysis Plot     
     20191222 203310    N/A      N/A   N/A     N/A     N/A  35.0 SSMI16   8.9 -135.1    8.9 -135.1    9.3 -134.6 Analysis Plot     
     20191223 085400  -23.2      N/A  94.5%  22.22    8.23  40.0 SSMI16  10.3 -131.4   10.3 -131.4   10.6 -131.6 Analysis Plot     
     20191223 095421 -930.0      N/A   N/A     N/A    0.00  40.0 SSMI18  10.3 -131.1   10.3 -131.1   11.8 -130.8 Analysis Plot     
     20191223 202046   14.4      N/A  75.3%  55.55   14.43  55.0 SSMI16  10.2 -128.2   10.2 -128.2   10.9 -128.6 Analysis Plot     
     20191223 213106   32.6  >65 kts  94.5%  55.55   17.61  55.0 SSMI18  10.2 -128.0   10.2 -128.0   10.8 -128.4 Analysis Plot     
     20191224 043349   34.9  >65 kts  97.3%  77.77   19.93  60.0  AMSR2  10.9 -126.6   11.0 -126.6   11.0 -126.6 Analysis Plot     
     20191225 051611   77.8  >85 kts 100.0%  44.44   62.81  80.0  AMSR2  12.0 -121.3   12.0 -121.5   12.0 -121.5 Analysis Plot     
     20191225 082753   50.7  >65 kts 100.0%  33.33   35.68  80.0 SSMI16  12.1 -121.0   12.2 -121.0   12.2 -121.0 Analysis Plot     
     20191225 092909    N/A      N/A   N/A     N/A     N/A  80.0 SSMI18  12.2 -120.8   12.4 -121.0   12.4 -121.0 Analysis Plot     
     20191225 214441   14.6      N/A  11.0%  33.33   14.64  80.0 SSMI16  12.8 -118.8   13.0 -119.0   13.0 -119.0 Analysis Plot     
     20191225 224838   18.9      N/A  50.7%  66.66   18.90  80.0 SSMI18  12.9 -118.6   13.1 -119.1   13.1 -119.1 Analysis Plot     
     20191226 080413   16.1      N/A  79.5%  22.22   16.15  70.0 SSMI16  13.2 -117.8   13.5 -118.0   13.5 -118.0 Analysis Plot     
     20191226 110723    2.5      N/A  67.1%  22.22    2.46  70.0 SSMI18  13.2 -117.4   13.2 -117.4   13.7 -118.1 Analysis Plot     
     20191226 181401   43.5  >65 kts 100.0%  44.44   28.46  70.0  AMSR2  14.3 -117.1   14.3 -117.1   14.5 -117.1 Analysis Plot     
     20191226 213131   15.0      N/A  21.9%  44.44   15.01  70.0 SSMI16  14.4 -116.8   14.4 -116.8   14.6 -117.2 Analysis Plot     
     20191226 223600   12.8      N/A   9.6%  66.66   12.75  70.0 SSMI18  14.4 -116.7   14.4 -116.7   14.7 -117.0 Analysis Plot     
     20191227 050629 -930.0      N/A   N/A     N/A    0.00  65.0  AMSR2  15.1 -116.5   15.1 -116.5   14.6 -116.9 Analysis Plot     
     20191227 104512    2.6      N/A  43.8%  55.55    2.59  55.0 SSMI18  14.5 -115.7   14.5 -115.7   15.6 -116.7 Analysis Plot     
     20191227 210945   -1.8      N/A   5.5% 255.53    1.75  40.0 SSMI16  14.3 -115.4   14.3 -115.4   14.5 -115.5 Analysis Plot     
     20191227 222309   -2.3      N/A   2.7% 266.64    2.25  40.0 SSMI18  14.3 -115.3   14.3 -115.3   14.6 -115.4 Analysis Plot     
     20191228 054739   -2.5      N/A   N/A   88.88    2.51  35.0  AMSR2  14.2 -114.4   14.2 -114.4   14.9 -114.0 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.