Chemical Downwind Message for KEDW

This product is derived from 29 OCT 2025 06Z NAM model data.

DD/HH  DDD FFF A TT H W C
29/06  176 005 7 16 3 - 0
29/08  203 007 7 12 4 - 0
29/10  214 007 7 10 4 - 0
29/12  214 007 7 08 4 - 0
29/14  216 007 7 07 4 - 0
29/16  221 007 7 12 3 - 0
29/18  226 009 7 21 1 - 0
29/20  223 012 7 26 1 - 0
29/22  220 012 7 28 1 - 0
30/00  215 009 7 27 1 - 0
30/02  202 007 7 23 1 - 0
30/04  197 007 7 18 2 - 0
30/06  198 007 6 14 2 - 0
30/08  191 007 5 12 3 - 0
30/10  202 007 5 10 3 - 0
30/12  222 003 5 09 3 - 0
30/14  230 005 5 08 4 - 0
30/16  222 003 4 13 3 - 0
30/18  197 005 5 21 1 - 0
30/20  212 007 5 26 1 - 0
30/22  203 001 5 28 1 - 0
31/00  063 003 6 27 1 - 0
31/02  066 009 6 23 1 - 0
31/04  067 007 7 18 2 - 0
31/06  055 007 7 14 3 - 0
31/08  062 005 7 12 5 - 0
31/10  055 003 7 10 5 - 0
31/12  045 003 7 10 5 - 0
31/14  079 001 7 09 5 - 0
31/16  212 005 7 12 4 - 0
31/18  205 005 7 20 3 - 0
31/20  184 005 7 25 1 - 0
31/22  168 005 7 27 1 - 0
01/00  131 003 7 26 1 - 0
01/02  075 005 7 23 2 - 0
01/04  062 007 7 19 2 - 0
01/06  084 003 6 16 3 - 0
01/08  172 001 6 14 4 - 0
01/10  215 003 6 12 5 - 0
01/12  219 005 6 10 6 - 0
01/14  222 005 6 09 6 - 0
01/16  225 003 6 13 4 - 0
01/18  198 003 6 21 2 - 0

Legend:

DD/HH  DDD FFF A TT H W C

DD   Valid Time Forecast Day (UTC)
HH   Valid Time Forecast Hour (UTC)
DDD  Surface Wind Direction (to a point, not from; e.g. 090 means towards the east
FFF  Wind Speed (km/hr)
A    Air Stability Code (from Lifted Index)
      LI   <= -1.5       A = 1
     -1.5  <  LI <  1.5  A = 2
      1.5  <= LI <  4.5  A = 3
      4.5  <= LI <  7.5  A = 4
      7.5  <= LI < 10.5  A = 5
     10.5  <= LI < 13.5  A = 6
     13.5  <= LI         A = 7
TT   Air Temperature Code (deg C) (temperatures greater than 50 are encoded as 50,
     temperatures less than -49 are encoded as 99, temperatures less than 0 are
     encoded by adding 50 to the absolute value of the temperature.
H    Relative Humidity Code (encoded with the 10s digit of the value where 100% = 9
     for example, 19% is 1, 56% is 5, 6% is 0
W    Significant Weather Code (Fog or BR is 4, Rain and Freezing Rain is 6,
     Mixed/Ice and Snow is 7, TRW or Svr TRW is 9, no precip is '-'.
     ***Note*** Code 9 is not evaluated in this output.
C    Total Cloud Cover is evaluated on a column directly above the model grid point
     and does not account for a horizon to horizon view.  If any of low, mid or hi cloud
     cover is evaluated as greater than 50%, cloud cover is encoded 2, otherwise
     it is encoded as 0.