lacunosus (la)
lag of aneroid barometer
lake
lake breeze
lake effect snowstorm
lake evaporation
laminar boundary layer
laminar flow
land breeze
landing forecast
langley
lapse rate
large halo
large-scale atmospheric processes
large-scale weather situation
laser - light amplification by stimulated emission of radiation
laser ceilometer
laser radar
latent heat
latent instability
lateral mixing
lateral refraction
leader streamer
leader stroke
leapfrog differencing
lee depression
lee trough
lee wave
leeward side
lenticularis (len)
levante
level
level of free convection - LFC
level of non-divergence
lidar - light detection and ranging
lifted index - LI
lifting condensation level - LCL
light
light air
light breeze
light exposure
light scattering diagram
light scattering table
lightning
lightning channel
lightning counter
lightning damage
lightning recorder
lightning suppression
lightship
lightship station
limited fine-mesh model
limited-area forecast model
line source
line squall
linear instability
linearity
liquid thermometer
lithometeor
little ice age
local forecast
local lightning counter
local precipitation
local wind
locust control
lofting
logarithmic velocity profile
long wave
long-range forecast
long-wave radiation
longitudinal wind
looming
looping
low
low cloud
low index
low-level cloud
low-level jet - LLJ
low-level jet stream
low-pressure area
lower circumzenithal arc
lower mirage
lumen
luminance
luminance temperature
luminous exposure
luminous flux
luminous intensity
lunar atmospheric tide
lunar halo
lunar rainbow
lustrum
lux
lysimeter