Abbreviations

Symbols
+	heavy
-	light
//	missing weather data
	missing visibility data
	missing cloud data

A

B
BC	patches of
BECMG	becoming
BKN	broken (5 to 7 oktas)
BL	blowing
BR	mist
BY	blowing spray

C

D
D	(after an RVR reading) RVR deteriorating
DR	drifting
DS	dust storm
DU	dust
DZ	drizzle

E

F
FC	funnel clouds
+FC	tornado / water spout
FEW	few (1 to 2 oktas)
FG	fog
FM	from
FU	smoke
FZ	freezing

G
GR	hail
GS	small hail pellets

H
HZ	haze

I
IC	ice crystals
INTER	intermittent variations of periods < 30 min in a hour

J

K

L

M
M	(after an RVR reading) value is below the minimum readable
MI	shallow

N
N	(after an RVR reading) no significant change during the period of observation
NCD	nil cloud detected
NDV	no directional variation
NSC	nil significant cloud
NSW	no significant weather

O
OVC	overcast (8 oktas)

P
P	(after an RVR reading) value is above the maximum readable
PL	ice pellets
PO	dust devils
PR	partial
PROB	probability
PY	spray

Q

R
RA	rain
RE	recent (eg. RERA = recent rain)
RFxx.x/yyy.y	rainfall: xx.x mm in last 10 minutes, yyy.y mm since 0900 local
RFxx.x/yyy.y/zzz.z	rainfall: xx.x mm in last 10 minutes, yyy.y mm in last 60 minutes, zzz.z mm since 0900 local

S
SA	sand
SCT	scattered (3 to 4 oktas)
SG	snow grains
SH	showers
SKC	sky clear
SN	snow
SQ	squalls
SS	sand storm

T
TEMPO	temporary variations of periods of 30 min to < 60 min
TS	thunderstorms

U
U	(after an RVR reading) RVR improving
UP	unknown precipitation

V
VC	in the vicinity
VA	volcanic ash

W
WS	windshear

X

Y

Z

Wikis