Chemical Downwind Message for KEDW

This product is derived from 20 MAY 2026 00Z NAMNEST model data.

DD/HH  DDD FFF A TT H W C
20/00  231 005 5 28 0 - 0
20/02  291 005 5 25 1 - 0
20/04  304 001 5 22 1 - 0
20/06  053 007 5 15 1 - 0
20/08  071 007 6 10 5 - 0
20/10  072 001 6 10 4 - 0
20/12  068 003 7 08 4 - 0
20/14  148 003 7 10 3 - 0
20/16  219 001 7 20 1 - 0
20/18  250 003 7 27 0 - 0
20/20  246 003 7 30 0 - 0
20/22  180 000 7 31 0 - 0
21/00  045 007 7 31 0 - 0
21/02  059 025 7 26 1 - 0
21/04  045 016 7 19 2 - 0
21/06  035 012 7 15 2 - 0
21/08  035 011 6 12 3 - 0
21/10  026 011 5 12 3 - 0
21/12  018 007 5 09 5 - 0
21/14  022 003 4 13 4 - 0
21/16  061 003 4 23 2 - 0
21/18  061 011 4 30 1 - 0
21/20  051 011 4 32 0 - 0
21/22  054 031 4 33 1 - 0
22/00  055 038 4 30 1 - 0
22/02  058 031 3 26 2 - 0
22/04  050 018 4 20 3 - 0
22/06  046 016 5 16 4 - 0
22/08  039 014 5 14 4 - 0
22/10  035 012 6 12 5 - 0
22/12  034 011 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.