Weather

cloud at ground level with less than 1000 meters visibility (distinguished from haze by its wetness and grey colour)

fog

cloud at ground level with more than 1000 meters visibility

mist

fine dust or vapour causing an unclear, clouded atmosphere

haze

a type of cloud which is high, dense and generates storm activity

CB

wind blowing in the same direction as the direction of travel of the aircraft

tailwind

sudden rush of wind

gust

snow and rain together (precipitation)

sleet

sudden vertical descending movement of a mass of air

downdraught

bottom of cloud level

ceiling

wind blowing in a direction perpendicular to the direction of travel of the aircraft

crosswind

gradual lateral movement off course usually caused by a crosswind

drift

ice in a thin layer on the surface of the road

black ice

intermittent ice cover on the ground

ice patches

small area of still water, especially one that has been formed naturally

a pool of water

accumulation, accretion, growth

a build-up

snow that has been moved into a heap (by men)

snow bank

snow that has been blown by the wind so that it is deep

snow drift

snow that has deep grooves in it frozen hard

snow ruts

mixture of snow and liquid water on the ground

slush

a large dangerous local wind gradient and change in wind direction characterised by a sudden downward gust causing the A/C to loose airspeed and altitude

windshear

chemical or industrial gases

fumes

very localised, descending wind which hits the ground and spreads out; it causes an increase in airspeed as the A/C enters it, followed immediately by a decrease in airspeed

microburst

fumes caused by combustion

smoke

very light but constant rain

drizzle

bright reflected our refracted light

glare

a heavy, sudden fall of rain

downpour

a severe snowstorm

blizzard

large quantity of water covering area that is usually dry

flood

a very strong wind, a storm at sea

gale

to become liquid through heating

melt

hot, uncomfortable; making it difficult to breathe

stifling

temperature below zero

frost

covered with cloud, dull

overcast

with strong winds

blustery

light wind

breeze

the condition of being hot, high temperature

heat

a weather condition in which the temperature falls below freezing-point

freezing

continuous dry weather

drought

flash of light in the sky

lightning

(used about a flight) uncomfortable because of bad weather

bumpy

small drops of water that form on the ground at night

dew

the loud noise that you sometimes hear in the sky during a storm

thunder

a small ball of ice that falls as rain

hailstone

a surface that is difficult to move on because it is smooth or wet

slippery

______ winds

gusting winds

______ thunderstorms

severe thunderstorms

______ flooding

flash flooding

______ snow

drifting snow

______ showers

scattered showers