Fog

Heavy thunder

Heavy showers

Heavy snow

Wind ≥ 20kt

Symbol

☰

☈

Code

(FZ)FG

+TS

+SHRA

+SN

..KT

 

VMC

IMC

 

(Visual Meteorological Conditions)

(Instrumental Meteorological Conditions)

CLD

≥ 1500ft

< 1500ft

 

and

and/or

VIS

≥ 5km

< 5 km

 

VFR

MFR

IFR

LIFR

 

(VFR)

(Marginal VFR)

(IFR)

(Low IFR)

CLD

≥ 3000ft

1000-3000ft

500-1000ft

< 500ft

 

and

and/or

and/or

and/or

VIS

≥ 8km

5-8 km

1500m-5km

< 1500m

 

BLU

WHT

GRN

YLO

AMB

RED

CLD

≥ 2500ft

1500-2500ft

700-1500ft

300-700ft

200-300ft

< 200ft

 

and

and/or

and/or

and/or

and/or

and/or

VIS

≥ 8km

5-8km

3700-5000m

1600-3700m

800-1600m

< 800m

 

C

O

D

M

X

 

(Clear)

(Open)

(Difficult)

(Marginal)

(Closed)

CLD

≥ 5000ft

≥ 2000-5000ft

1000-2000ft

500-1000ft

< 500ft

 

and

and

and/or

and/or

and/or

VIS

≥ 10km

≥ 8km

5-8 km

1500-5000 m

< 1500m