Chemical Downwind Message for KEDW

This product is derived from 16 AUG 2026 00Z NAM model data.

DD/HH  DDD FFF A TT H W C
16/00  068 018 2 36 1 - 0
16/02  072 024 3 30 2 - 0
16/04  062 014 3 22 5 - 0
16/06  051 011 3 17 7 - 0
16/08  041 007 4 14 9 4 0
16/10  047 005 4 14 8 4 0
16/12  090 001 4 14 9 4 0
16/14  210 003 4 14 8 4 0
16/16  180 000 5 24 4 - 0
16/18  108 001 5 33 1 - 0
16/20  051 003 5 36 1 - 0
16/22  064 012 5 38 1 - 0
17/00  065 022 5 36 1 - 0
17/02  059 024 5 31 2 - 0
17/04  051 014 5 23 4 - 0
17/06  042 011 4 19 5 - 0
17/08  038 009 3 17 6 - 0
17/10  030 009 3 16 6 - 0
17/12  035 007 4 15 6 - 0
17/14  053 003 3 16 5 - 0
17/16  037 003 3 27 3 - 2
17/18  050 009 3 34 1 - 0
17/20  046 012 3 37 1 - 0
17/22  062 020 3 38 1 - 0
18/00  065 025 4 36 1 - 0
18/02  063 022 4 32 2 - 0
18/04  055 014 4 23 4 - 0
18/06  045 011 4 19 5 - 0
18/08  040 009 5 17 6 - 0
18/10  037 009 5 16 6 - 0
18/12  034 007 6 15 6 - 0
18/14  030 005 6 16 6 - 0
18/16  021 003 6 27 3 - 0
18/18  050 005 6 35 1 - 0
18/20  058 011 6 38 1 - 0
18/22  065 016 6 40 1 - 0
19/00  068 022 6 39 1 - 0
19/02  074 020 7 34 1 - 0
19/04  071 012 6 24 3 - 0
19/06  042 011 5 19 5 - 0
19/08  036 009 4 18 6 - 0
19/10  036 007 4 17 6 - 0
19/12  035 007 4 16 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.