Layer coverage, 1-25
Layer height, METAR, 1-27
Lead, 1-51
Lenticular, 1-24
Lightning, 1-35
ball, 1-36
cloud to air, 1-36
cloud to cloud, 1-36
cloud to ground, 1-36
in cloud, 1-36
lace, 1-36
Liquid precipitation, 1-33
Lithometeor, 1-30
Local,
Area Weather Chart, 4-17, 4-22
Mean Time (LMT), 1-2
Standard Time (LST), 1-2
Longitude, meridians, 4-1
Low-level wind shear (LLWS), 1-14
M
Mackerel sky, see cirrocumulus
Magnetic wind direction, 1-44
Maintenance programs, 2-39
3-M Program, 2-39
METEM, 2-39
Making course, 4-37
Mamma, 1-14
Mandatory levels, PILOT code, 4-29 to 4-32
Mandatory levels, TEMP code, 4-29 to 4-32
Mare’s tails, see cirrus uncinus
Marine barograph, 2-15
accuracy checks and adjustments, 2-17
operation, 2-15
Maximum temperature, SYNOP code, 3-14
Maximum wind,
PILOT code, 4-34
TEMP code, 4-34
Mean wind speed, 1-44
Measurement systems, 1-1
Mechanical lift, 1-4
Mercator projections, 4-8
Mercator track, 4-9
Meridians of longitude, 4-1
METAR code,
air temperature, 3-9
altimeter setting, 3-9
CAVOK statement, 3-9
cloud coverage, 3-8
cloud height, 3-8
format, 3-6
identification data, 3-6
observation time, 3-6
plotting model, 4-22
present weather, 3-7 to 3-8
regional differences, 3-11
runway visual range, 3-7
sky coverage, 3-8
station identifier, 3-6
supplemental data, 3-9
surface visibility, 3-7
synoptic weather, 3-9 to 3-10
variable wind direction, 3-7
visibility, 3-7
visibility increments, 1-28, 3-7
wind direction, 3-7
wind character, 3-7
wind speed, 3-7
Meteorological buoys, 2-4
Microburst, 1-14
INDEX-7
