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B-2
Rev 2 Apr/2004
KMD 250 Pilot's Guide
Appendix B
Wx Abbreviations
Common Weather Abbreviations
ANS Answer
AO1 Automated
Reporting Station
AO2 Automated
Reporting Station
AOA At or above
AOB At or below
AP Anomalous
Propagation
APCH Approach
APCHG Approaching
APCHS Approaches
APLCN Appalachian
APLCNS Appalachians
APPR Appear
APPRG Appearing
APPRS Appears
APRNT Apparent
APRNTLY Apparently
APRX Approximate
APRXLY Approximately
AR Arkansas
ARL Air Resources Lab
ARND Around
ARPT Airport
ASAP As soon as possible
ASL Above Sea Level
ASMD As Amended
ASOS Automated Surface
Observing System
ASSOCD Associated
ASSOCN Association
ATCT Air Traffic Control
Tower
ATLC Atlantic
ATTM At this time
ATTN Attention
AUTO Automated report
AVBL Available
AVG Average
AVN Aviation model
AWC Aviation Weather
Center
AWIPS Advanced Interactive
Weather Processing
System
AWOS Automated Weather
Observing system
AWT Awaiting
AWW Alert Weather Watch
AZ Arizona
AZM Azimuth
B Began
BACLIN Baroclinic
BAJA Baja, California
BATROP Barotropic
BC British Columbia or
patches (descriptor
used with FG)
BCFG Patchy fog
BCH Beach
BCKG Backing
BCM Become
BCMG Becoming
BCMS Becomes
BD Blowing dust
BDA Bermuda
BDRY Boundary
BECMG Becoming
BFDK Before dark
BFR Before
BGN Begin
BGNG Beginning
BGNS Begins
BHND Behind
BINOVC Breaks in overcast
BKN Broken
BL Blowing
BLD Build
BLDG Building
BLDS Builds
BLDUP Buildup
BLKHLS Black Hills
BLKT Blanket
BLKTG Blanketing
Appendix B 8/13/07 10:02 AM Page B-2