Appendix - WEATHER CODES

Question 1

Minus (-)

Answer 1

(Qualifier)(Intensity)

Light

Question 2

No Qualifier

Answer 2

(Qualifier)(Intensity)

Moderate

Question 3

Plus (+)

Answer 3

(Qualifier)(Intensity)

Heavy

Question 4

VC

Answer 4

(Qualifier)(Proximity)

In the Vicinity

Question 5

MI

Answer 5

(Qualifier)(Descriptor)

Shallow

Question 6

BC

Answer 6

(Qualifier)(Descriptor)

Patches

Question 7

PR

Answer 7

(Qualifier)(Descriptor)

Partial

Question 8

DR

Answer 8

(Qualifier)(Descriptor)

Drifting

Question 9

BL

Answer 9

(Qualifier)(Descriptor)

Blowing

Question 10

SH

Answer 10

(Qualifier)(Descriptor)

Showers

Question 11

TS

Answer 11

(Qualifier)(Descriptor)

Thunderstorm

Question 12

FZ

Answer 12

(Qualifier)(Descriptor)

Freezing

Question 13

DZ

Answer 13

(Precipitation)

Drizzle

Question 14

RA

Answer 14

(Precipitation)

Rain

Question 15

SN

Answer 15

(Precipitation)

Snow

Question 16

SG

Answer 16

(Precipitation)

Snow Grains

Question 17

IC

Answer 17

(Precipitation)

Ice Crystals

Question 18

PL

Answer 18

(Precipitation)

Ice pellets

Question 19

GR

Answer 19

(Precipitation)

Hail

Question 20

GS

Answer 20

(Precipitation)

Snow Pellets

Question 21

UP

Answer 21

(Precipitation)

Unknown precipitation
(AWOS only)

Question 22

BR

Answer 22

(Obscuration)

Mist

Question 23

FG

Answer 23

(Obscuration)

Fog

Question 24

FU

Answer 24

(Obscuration)

Smoke

Question 25

DU

Answer 25

(Obscuration)

Dust

Question 26

SA

Answer 26

(Obscuration)

Sand

Question 27

HZ

Answer 27

(Obscuration)

Haze

Question 28

VA

Answer 28

(Obscuration)

Volcanic Ash

Question 29

PO

Answer 29

(Other)

Dust/sand whirls (dust devils)

Question 30

SQ

Answer 30

(Other)

Squalls

Question 31

+FC

Answer 31

(Other)

Tornado or waterspout

Question 32

FC

Answer 32

(Other)

Funnel Cloud

Question 33

SS

Answer 33

(Other)

Sand Storm

Question 34

DS

Answer 34

(Other)

Dust storm

Question 35

WS

Answer 35

Wind shear

Question 36

FM

Answer 36

(TAF Change group)

FROM

There will be a rapid change in weather from a certain time onwards

Question 37

TEMPO

Answer 37

(TAF Change group)

TEMPORARY

There will be a temporary fluctuation during the specified period

Question 38

PROB

Answer 38

(TAF Change group)

PROBABILITY

(PROB30 or PROB40): There is a 30 or 40 percent chance of an event during the specified period

Question 39

BECMG

Answer 39

(TAF Change group)

BECOMING

The weather will gradually change to a new condition

Question 40

P

Answer 40

More than

used when describing visibility and altitude