Tropical Depression 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              
     20190725 034735   -3.3      N/A  23.3%  77.77    3.27  25.0  AMSR2  26.6 -137.7   26.6 -137.7   26.6 -138.1 Analysis Plot     
     20190725 223255 -930.0      N/A   N/A     N/A    0.00  35.0 SSMI17  29.1 -136.9   29.1 -136.9   29.5 -137.6 Analysis Plot     
     20190726 091828   -2.0      N/A  12.3% 177.76    2.04  35.0 SSMI18  31.3 -136.2   31.3 -136.2   31.5 -136.1 Analysis Plot     
     20190726 163543   -1.2      N/A   N/A   55.55    1.21  35.0  AMSR2  33.0 -136.0   33.0 -136.0   33.1 -135.7 Analysis Plot     
     20190726 184838   -0.3      N/A   N/A  155.54     .31  30.0 SSMI15  33.5 -136.1   33.5 -136.1   33.6 -135.9 Analysis Plot     
     20190726 210303   -2.2      N/A   5.5% 111.10    2.22  30.0 SSMI16  33.8 -136.2   33.8 -136.2   34.0 -135.9 Analysis Plot     
     20190727 033750   -0.7      N/A   1.4%  88.88     .74  25.0  AMSR2  35.2 -137.0   35.2 -137.0   35.5 -136.6 Analysis Plot     
     20190727 071355 -930.0      N/A   N/A     N/A    0.00  25.0 SSMI15  35.5 -137.4   35.5 -137.4   35.4 -138.2 Analysis Plot     
     20190727 084056 -930.0      N/A   N/A     N/A    0.00  25.0 SSMI18  35.9 -137.8   35.9 -137.8   35.6 -138.6 Analysis Plot     
     20190727 100517 -930.0      N/A   N/A     N/A    0.00  25.0 SSMI17  36.1 -138.1   36.1 -138.1   35.7 -138.9 Analysis Plot     
     20190727 164234   -2.5      N/A  12.3%  33.33    2.49  25.0    GMI  37.1 -139.6   37.1 -139.6   37.1 -139.9 Analysis Plot     
     20190727 183048   -2.3      N/A   N/A   88.88    2.29  25.0 SSMI15  37.3 -140.0   37.3 -140.0   37.8 -139.3 Analysis Plot     
     20190727 205028 -930.0      N/A   N/A     N/A    0.00  25.0 SSMI16  37.5 -140.4   37.5 -140.4   37.9 -139.2 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.