Tropical Storm 07W

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              
     20200809 210000   -0.7      N/A  20.8%  99.99     .74  30.0 SSMI16  18.8 -118.5   18.8 -118.5   18.7 -118.8 Analysis Plot     
     20200809 220441   -6.8      N/A   N/A   33.33    6.78  30.0 SSMI18  19.0 -118.5   19.0 -118.5   18.9 -118.1 Analysis Plot     
     20200810 084354   -4.0      N/A  42.5%  33.33    3.98  35.0 SSMI18  20.5 -118.7   20.5 -118.7   20.9 -118.7 Analysis Plot     
     20200810 100045   -5.3      N/A  30.1%  99.99    5.29  35.0 SSMI15  20.5 -118.7   20.5 -118.7   20.9 -118.4 Analysis Plot     
     20200810 173405   -0.3      N/A  38.4% 144.43     .29  45.0    GMI  22.7 -118.7   22.7 -118.7   22.7 -118.2 Analysis Plot     
     20200810 212255   10.5      N/A  32.9% 122.21   10.52  55.0 SSMI15  23.4 -118.1   23.4 -118.1   23.5 -117.7 Analysis Plot     
     20200810 215211   11.6      N/A  32.9% 111.10   11.60  55.0 SSMI18  23.5 -118.1   23.5 -118.1   23.6 -117.7 Analysis Plot     
     20200811 083208 -930.0      N/A   N/A     N/A    0.00  55.0 SSMI18  25.8 -117.8   25.8 -117.8   26.6 -117.6 Analysis Plot     
     20200811 094749 -930.0      N/A   N/A     N/A    0.00  70.0 SSMI15  25.7 -117.4   25.7 -117.4   26.2 -117.4 Analysis Plot     
     20200811 205506    0.1      N/A   N/A   33.33     .07  70.0 SSMI15  28.5 -117.3   28.5 -117.3   27.5 -117.9 Analysis Plot     
     20200811 222450 -930.0      N/A   N/A     N/A    0.00  70.0 SSMI16  28.8 -117.4   28.8 -117.4   27.8 -118.5 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.