Appendix
Acronyms: A's
AAA | (or AAB, AAC, AAD... etc., in sequence) Amended meteorological message (a message type designator) |
---|---|
AAL | Above aerodrome level |
ABNDT | Abundant |
ABNML | Abnormal |
ABT | About |
ABV | Above |
Ac or AC | Altocumulus |
AC | Anticipated Convection Outlook |
ACC | Area Control Center or area control |
ACCAS | Altocumulus Castellanus |
ACCID | Notification of an aircraft accident |
ACCUM | Accumulate |
ACFT | Aircraft |
ACK | Acknowledge |
ACLT | Accelerate |
ACLTD | Accelerated |
ACLTG | Accelerating |
ACLTS | Accelerates |
ACPT | Accept or accepted |
ACPY | Accompany |
ACRS | Across |
ACSL | Altocumulus Standing Lenticular |
ACT | Active or activated or activity |
ACTV | Active |
ACTVTY | Activity |
ACYC | Anticyclone |
AD | Aerodrome |
ADA | Advisory area |
ADDN | Addition or additional |
ADJ | Adjacent |
ADL | Additional |
ADM | Administrative Messages |
ADQT | Adequate |
ADQTLY | Adequately |
ADR | Advisory route |
ADRNDCK | Adirondack |
ADVCT | Advect |
ADVCTD | Advected |
ADVCTG | Advecting |
ADVCTN | Advection |
ADVCTS | Advects |
ADVIS | Headwater Advisory Program |
ADVN | Advance |
ADVNG | Advancing |
ADVS | Advisory service |
ADVY | Advisory |
ADVYS | Advisories |
ADZ | Advise |
AFCT | Affect |
AFCTD | Affected |
AFCTG | Affecting |
AFD | Area Forecast Discussion |
AFDK | After dark |
AFOS | Automation of Field Operations and Services |
AFT | After (time or place) |
AFTN | Afternoon |
AGC | Automatic Gain Control |
AGL | Above ground level |
AGN | Again |
AGRD | Agreed |
AGRMT | Agreement |
AGRS | Agrees |
AHD | Ahead |
AHOS-S | Automatic Hydrologic Observing System - Satellite |
AHOS | Automatic Hydrologic Observing System |
AHOS-T | Automatic Hydrologic Observing System - Telephone |
AIRMET | AIRman's METeorological Information |
AK | Alaska |
AL | Alabama |
ALERT | Automated Local Evaluation in Real Time |
ALF | Aloft |
ALG | Along |
ALGHNY | Allegheny |
ALQDS | All quadrants |
ALSTG | Altimeter setting |
ALT | Altitude |
ALTA | Alberta |
ALTHO | Although |
ALTM | Altimeter |
ALUTN | Aleutian |
AMD | Amend or amended (used to indicate amended meteorological message; message type designator) |
AMDD | Amended |
AMDG | Amending |
AMDT | Amendment |
AMP | Amplify |
AMPG | Amplifying |
AMPLTD | Amplitude |
AMS | Air mass |
AMSL | Above mean sea level |
AMT | Amount |
ANLYS | Analysis |
ANS | Answer |
AOA | At or above |
AOB | At or Below |
AP | Anomalous Propagation or Airport |
APCH | Approach |
APCHG | Approaching |
APCHS | Approaches |
API | Antecedent Precipitation Index |
APLCN | Appalachian |
APLCNS | Appalachians |
APPR | Appear |
APPRG | Appearing |
APPRS | Appears |
APR | April |
APRNT | Apparent |
APRNTLY | Apparently |
APRX | Approximate or approximately |
APRXLY | Approximately |
APSG | After passing |
AQI | Air Quality Statement |
AR | Arkansas |
Arcus | Arc Cloud |
ARFOR | Area forecast (in aeronautical meteorological code) |
ARND | Around |
ARPT | Airport |
ARR | Arrive or arrival |
ART | Automatic Radio Theodolite Master Control Unit As or AS - Altostratus |
ASAP | AHOS SHEF Automatic Processing System or as soon as possible |
ASAPTRAN | The software component of ASA |
ASC | Ascent to or ascending to |
ASH | Assistant Service Hydrologist |
ASL | Above Sea Level |
ASMD | As amended |
ASOS | Automated Surface Observing System |
ASSOCD | Associated |
ASSOCN | Association |
AT... | At (followed by time at which weather change is forecast to occur) |
ATAD | Automated Telephone Answering Device |
ATDTDCS | Automated Tone Dial Telephone Data Collection System |
ATLC | Atlantic |
ATMU | Air Transportable Mobile Unit |
ATP... | At... (time or place) |
ATTM | At this time |
ATTN | Attention |
AUG | August |
AVBL | Available or availability |
AVG | Average |
AVN | Aviation model |
AWC | Aviation Weather Center |
AWHPS | Area Wide Hydrologic Prediction System |
AWIPS | Advanced Weather Interactive Processing System |
AWOS | Automated Weather Observation System |
AWT | Awaiting |
AZ | Arizona |
AZM | Azimuth |