Dull question I'm afraid and apologies if in the wrong forum but I reckoned you North American types would be most likely to know the answer to this......
What does the "957" in the RMK section of this METAR refer to? I thought I knew all the weird RMK codes but this one has me stumped....
METAR MMMX 141143Z 07007KT 8SM FEW080 16/09 A3030 NOSIG RMK
SLP080 52006 957 8/030 HZY=
Thanks
