Chemical Downwind Message for KEDW

This product is derived from 15 AUG 2026 18Z NAMNEST model data.

DD/HH  DDD FFF A TT H W C
15/18  338 001 3 30 2 - 0
15/20  032 007 2 34 1 - 0
15/22  062 016 3 36 1 - 0
16/00  067 029 3 34 2 - 0
16/02  066 024 2 30 2 - 0
16/04  051 012 2 20 4 - 0
16/06  036 012 2 17 6 - 0
16/08  031 011 3 15 9 - 0
16/10  023 007 4 14 7 - 0
16/12  045 003 5 14 5 - 0
16/14  104 003 5 15 5 - 0
16/16  180 000 6 24 3 - 0
16/18  180 000 6 33 1 - 0
16/20  328 003 4 37 1 - 0
16/22  030 009 5 38 1 - 0
17/00  069 029 6 36 1 - 0
17/02  066 024 7 32 1 - 0
17/04  054 014 7 24 2 - 0
17/06  035 014 7 21 3 - 0
17/08  029 011 7 18 5 - 2
17/10  027 009 7 17 4 - 0
17/12  030 007 6 17 4 - 0
17/14  040 005 5 16 3 - 0
17/16  034 003 4 28 2 - 0
17/18  056 005 4 36 1 - 0
17/20  034 005 4 39 1 - 0
17/22  054 014 3 40 1 - 2
18/00  069 031 3 36 1 - 2
18/02  065 022 3 32 2 - 0
18/04  046 012 3 24 3 - 0
18/06  030 012 3 21 3 - 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.