Chemical Downwind Message for KEDW

This product is derived from 29 OCT 2025 00Z NAM model data.

DD/HH  DDD FFF A TT H W C
29/00  241 018 5 28 1 - 0
29/02  222 011 6 21 1 - 0
29/04  217 009 6 16 2 - 0
29/06  213 007 7 13 3 - 0
29/08  218 005 7 11 4 - 0
29/10  216 005 7 10 4 - 0
29/12  216 005 7 08 4 - 0
29/14  212 007 7 07 4 - 0
29/16  215 007 7 12 3 - 0
29/18  224 011 7 21 1 - 0
29/20  222 012 7 26 1 - 0
29/22  228 011 7 28 1 - 0
30/00  225 009 7 27 1 - 0
30/02  205 007 7 22 1 - 0
30/04  198 007 7 18 2 - 0
30/06  191 007 7 14 2 - 0
30/08  189 007 7 12 3 - 0
30/10  204 007 7 10 3 - 0
30/12  219 005 6 09 4 - 0
30/14  234 005 5 08 4 - 0
30/16  221 003 5 12 3 - 0
30/18  195 005 5 21 1 - 0
30/20  213 005 5 26 1 - 0
30/22  187 003 5 28 1 - 0
31/00  066 003 5 27 1 - 0
31/02  061 009 5 23 1 - 0
31/04  063 007 5 18 2 - 0
31/06  055 007 6 14 4 - 0
31/08  062 005 6 12 5 - 0
31/10  051 003 7 10 6 - 0
31/12  045 003 7 09 6 - 0
31/14  162 001 7 09 6 - 0
31/16  216 005 7 12 5 - 0
31/18  202 003 7 20 3 - 0
31/20  164 001 7 25 2 - 0
31/22  099 005 7 28 1 - 0
01/00  058 007 7 27 1 - 0
01/02  051 009 7 22 2 - 0
01/04  056 007 7 16 3 - 0
01/06  063 005 7 14 4 - 0
01/08  097 003 7 12 5 - 0
01/10  180 003 7 11 5 - 0
01/12  210 003 6 10 6 - 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.