Answers to the most common questions about the weather: clouds, thunderstorms, tornadoes, hail, hurricanes, global warming, fronts, air pressure, and much more.

A service of WeatherStreet.com
--- A ---
AEROSOLS
    What are aerosols?
AIR
    What is air made of?
    How much does air weigh?
AIR MASS
    What is an air mass?
    What is an unstable air mass?
AIR PRESSURE (see PRESSURE)
ANTARCTICA
    What kind of weather does Antarctica have?
ANTICYCLONE
    What is an anticyclone?
ANVIL CLOUD
    What is an anvil cloud?
--- B ---
BLIZZARD
    What is a blizzard?
BLUE SKY
    Why is the sky blue?
--- C ---
CARBON DIOXIDE
    What is carbon dioxide?
CLIMATE
    What is climate?
CLOUDS
    How do clouds form?
    What types of clouds are there?
CLOUD SEEDING
    What is cloud seeding?
COLD FRONTS (see fronts)
CONDENSATION
    What is condensation?
CONDENSATION NUCLEI
    What are condensation nuclei?
CONTRAILS
    What are jet contrails made of?
CONVECTION
    What is convection?
CYCLONE
    What is a cyclone?
--- D ---
DEGREE-DAYS
    What are degree-days?
DERECHO
    What is a derecho?
DESERTS
    Why are deserts so hot?
DEW
    How does dew form?
DEWPOINT
    What is dewpoint temperature?
DOWNBURST
    What is a downburst?
DRIZZLE
    What is drizzle?
DUST DEVILS
    What causes dustdevils?
--- E ---
EARTH-IMPACTING ASTEROIDS
    "Aussie Bloke" and his end-of-world theory
EVAPORATION
    What is evaporation?
--- F ---
FORECASTING
    How are weather forecasts made?
FOG
    What causes fog?
FREEZING RAIN
    What causes freezing rain?
FRONTS
    What is a "cold front"? A "warm front"?
FROST
    What causes frost?
FUNNEL CLOUD
    What is a funnel cloud?
--- G ---
GLACIERS
    What causes glaciers?
GLOBAL WARMING
    What is global warming?
    What causes global warming?
GREENHOUSE EFFECT
    What is the greenhouse effect? What are greenhouse gases?
    Everyday examples of the greenhouse effect
    A backyard greenhouse effect experiment
    Why the greenhouse effect in a jar experiment does not work
GUST FRONT
    What is a gust front?
--- H ---
HAIL
    What causes hail?
HALOS
    What causes halos?
HEAT LIGHTNING
    What is heat lightning?
HIGH PRESSURE (see PRESSURE)
HUMIDITY
    What is humidity?
HURRICANES
    What causes hurricanes? What is the hurricane "eye"?
    Are hurricanes getting worse?
--- I ---
ICE PELLETS (SLEET)
    What causes ice pellets (sleet)?
INFRARED RADIATION
    What is infrared radiation?
--- J ---
JET STREAM
    What causes the jet stream?
--- L ---
LAKE-EFFECT SNOW
    What causes lake effect snow?
LIGHTNING
    What causes lightning?
LOW PRESSURE (see PRESSURE)
--- M ---
MEGACRYOMETEORS
    What causes megacryometeors? (Falls of large ice masses)
MONSOON
    What is a monsoon?
--- N ---
NOR'EASTER
    What is a nor'easter?
--- O ---
OZONE HOLE
    What is the ozone hole?
OZONE LAYER
    What is the ozone layer?
--- P ---
PRECIPITATION
    What causes precipitation?
PRESSURE
    What causes high pressure?
    What causes low pressure?
--- R ---
RADAR
    How does weather radar work?
RAIN (see PRECIPITATION)
RAINBOWS
    What causes rainbows?
--- S ---
SANDSTORM
    What causes sandstorms?
SEASONS
    What causes the seasons?
SEVERE THUNDERSTORMS (see HAIL or TORNADEOS or DOWNBURST)
SNOW
    What causes snow?
    What causes snow storms?
SNOW ROLLERS
    What are snow rollers?
SNOWFALL RECORDS
    What are the record 24 hour snowfalls by state?
SQUALL LINE
    What is a squall line?
STRATOSPHERE
    What is the stratosphere?
SUNSETS
    Why are sunsets red?
--- T ---
TEMPERATURE
    What is temperature?
    How do you convert between Celsius and Fahrenheit temperature?
    What are the lowest temperatures recorded in the U.S.?
    What are the highest temperatures recorded in the U.S.?
TEMPERATURE INVERSION
    What is a temperature inversion?
THUNDERSTORMS
    What causes thunderstorms?
    What causes thunder?
TORNADOES
    What causes tornadoes?
    Are tornadoes getting worse?
TRADE WINDS
    What causes the trade winds?
TROPICAL STORM
    What is a tropical storm? a tropical depression?
TROPOSPHERE
    What is the troposphere?
TURBULENCE
    What causes turbulence?
TYPHOONS (see HURRICANES)
--- U ---
URBAN HEAT ISLAND
    What is the urban heat island?
--- W ---
WATER VAPOR
    What is water vapor?
WAVE CLOUDS
    What causes wave clouds?
WEATHER
    Definition of Weather: What is weather?
WEATHER SATELLITES
    How do weather satellites work?
WIND
    What causes wind?
WIND SHEAR
    What is wind shear?

(page last updated 12/14/2019)

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