Appendix B: Common Weather Constractions -Cont.

AVIATION WEATHER

APPENDIX B

WIND DIRECTIONS (8 POINTS)

UP ................................ unknown precipitation

UPR......................................................... upper

N.................................NORTH000 or 360

UTC.....................Coordinated Universal Time

NE .................................NORTHEAST045

UDDF.........................updrafts and downdrafts

E ................................................. EAST090

UNK/UNKN ......................................unknown

SE .................................. SOUTHEAST135

UNSTBL ............................................. unstable

S .............................................. SOUTH180

UP ................................ unknown precipitation

SW................................ SOUTHWEST225

W ................................................WEST270

NW ............................... NORTHWEST315

V...........................................................variable

For additional contractions, acronyms, and

VA.................................................volcanic ash

locations not found in this Appendix, consult

VC/VCNTY ......................................... vicinity

Section 14 of the AC 00-45E, Aviation

VFR................................... Visual Flight Rules

Weather Services, available at the following

VIS ..................................................... visibility

location: http://www.faa.gov/avr/afs/afs400

VLYS .................................................... valleys

VOR ............................... Very high frequency/

Omni-directional Range

VR ................................................. visual range

VRB/VRBL..........................................variable

VRY .......................................................... very

VSBYDR ............. visibility decreasing rapidly

VV......................................... vertical visibility

W.............................................................. West

WA................................................ Washington

WBND ............................................ westbound

WDLY....................................................widely

WS...................................................wind shear

WSCONDS ................... wind shear conditions

WSHFT ............................................. wind shif

WTRS .................................................... waters

WX.......................................................weather

XCP/XCPT ............................................ except

XTNDG............................................ extending

Z ...........................................Zulu Time (UTC)

Common Weather Contractions B-5