M |
Mesocyclone, Mach number (followed by figures), or Meters (preceded by figures) |
m2/s2 |
meters squared per second squared, equivalent to J/kg. See CAPE and CIN |
MA |
Massachusetts |
MAN |
Manitoba |
MAP |
Mean Areal Precipitation or Aeronautical maps and charts |
MAR |
March |
MAREP |
Marine Reporting Program |
MAX |
Maximum |
MAY |
May |
MB or mb |
Millibars. |
MCC |
Mesoscale Convective Complex |
MCD |
Mesoscale Discussion |
MCDW |
Monthly Climatic Data of the World |
McIDAS |
Man-computer Interactive Data Access System. |
MCS |
Mesoscale Convective System |
MCW |
Modulated continuous wave |
MD |
Maryland |
MDFY |
Modify |
MDFYD |
Modified |
MDFYG |
Modifying |
MDL |
Model |
MDLS |
Models |
MDS |
Minimum Discernible Signal |
MDT |
Moderate |
MDTLY |
Moderately |
ME |
Maine |
MED |
Medium |
MEGG |
Merging |
MESO |
Mesocyclone or Mesoscale |
MET |
Meteorological or meteorology |
METAR |
Aviation rountine weather report (in aeronautical meteorological code) |
METRO |
Metropolitan |
MEX |
Mexico |
MHKVLY |
Mohawk Valley |
MI |
Michigan |
MIC |
Meteorologist-In-Charge |
Micro-ART |
Microcomputer Automatic Radiotheodolite Master Control Unit |
MID |
Middle |
MIDN |
Midnight |
MIFG |
Shallow fog |
MIL |
Military |
MIN |
Minutes or Minimum |
MISG |
Missing |
MLCAPE |
Mean Layer CAPE |
MLLI |
Mean Layer Lifted Index |
MLLW |
Mean Lower Low Water |
MLOS |
Microwave Line-Of-Site |
MLTLVL |
Melting level |
MLW |
Mean Low Water |
MN |
Minnesota |
MNLND |
Mainland |
MNLY |
Mainly |
MNM |
Minimum |
MNT |
Monitor or monitoring or monitored |
MO |
Missouri |
MOD |
Meteorological Operations Division or Moderate |
MOGR |
Moderate or greater |
MON |
Above mountains or Monday |
MOS |
Model Output Statistics |
MOV |
Move or moving or movement |
MOVD |
Moved |
MOVG |
Moving |
MOVMT |
Movement |
MOVS |
Moves |
MPC |
Marine Prediction Center |
MPH |
Miles per hour |
MPL |
Max Parcel Level |
MRF |
Medium-Range Forecast model |
MRGL |
Marginal |
MRGLLY |
Marginally |
MRNG |
Morning |
MRTM |
Maritime |
MS |
Mississippi or Minus |
MSG |
Message |
MSL |
Mean Sea Level |
MST |
Most |
MSTLY |
Mostly |
MSTR |
Moisture |
MT |
Montana or Mountain |
MTN |
Mountain |
MTNS |
Mountains |
MTU |
Metric units |
MTW |
Mountain waves |
MUCAPE |
Most Unstable CAPE |
MULI |
Most Unstable Lifted Index |
MULT |
Multiple |
MULTILVL |
Multi-level |
MWO |
Meteorological watch office |
MX |
Mixed type of ice formation (white and clear) |
MXD |
Mixed |
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