Aviation Weather Services, Advisory Circular 00-45G, Change 1 (July 2010) Contraction or Acronym Subject Defined U Upward (tendency in RVR during previous 10 minutes) UA Pilot weather report (U.S.)
UDDF Up- and downdrafts UFN Until further notice UNA Unable UNAVBL Unavailable UNEC Unnecessary UNKN Unknown UNL Unlimited UNREL Unreliable UNRSTD Unrestricted UNSATFY Unsatisfactory UNSBL Unseasonable UNSTBL Unstable UNSTDY Unsteady UNSTL Unsettle UNSTLD Unsettled UNUSBL Unusable UPDFTS Updrafts UPR Upper UPSLP Upslope UPSTRM Upstream URG Urgent USBL Usable UT Utah UTC Coordinated Universal Time UVV Upward vertical velocity UWNDS Upper winds V VA Virginia or volcanic ash VAAC Volcanic Ash Advisory Center VAAS Volcanic Ash Advisory Statement VAL In valleys VARN Variation VC Vicinity of the aerodrome (followed by FG = fog, FC = funnel cloud, SH = showers, PO = dust/sand whirls, BLDU = blowing dust, BLSA = blowing sand or BLSN = blowing snow,
e.g. VC FG = vicinity fog) VCOT VFR conditions on top VCTR Vector Appendix B: Contractions and Acronyms Page 11-33
Aviation Weather Services, Advisory Circular 00-45G, Change 1 (July 2010) Contraction or Acronym Subject Defined VCY Vicinity VER Vertical VFR Visual flight rules VFY Verify VFYD Verified VFYG Verifying VFYS Verifies VIS Visibility VLCTY Velocity VLCTYS Velocities VLNT Violent VLNTLY Violently VLY Valley VMC Visual meteorological conditions VOL Volume VOLMT Meteorological information for aircraft in flight VORT Vorticity VR Veer VRB Variable VRG Veering VRISL Vancouver Island, BC VRS Veers VRT Vertical motion VRY Very VT Vermont VV Vertical velocity W W West or western longitude WA Washington WAA Warm air advection WAFC World area forecast centre WAFS Word area forecast system WB Westbound WDI Wind direction indicator WDLY Widely WDSPR Widespread WED Wednesday WEF With effect from or effective from WFO Weather Forecast Office WFP Warm front passage Appendix B: Contractions and Acronyms Page 11-34
Aviation Weather Services, Advisory Circular 00-45G, Change 1 (July 2010) Contraction or Acronym Subject Defined WI Wisconsin or within WIBIS Will be issued WID Width WIE With immediate effect or effective immediately WINT Winter WINTEM Forecast upper wind and temperature for aviation WK Weak WKDAY Weekday WKEND Weekend WKN Weaken or weakening WL Will WLY Westerly WND Wind WNDS Winds WNW West-northwest WNWLY West-northwesterly WNWRN West-northwestern WNWWD West-northwestward WO Without WPLTO Western Plateau WRM Warm WRMG Warming WRN Western WRMR Warmer WRMST Warmest WRMFNT Warm front WRMFNTL Warm frontal WRNG Warning WRS Worse WS Wind shear WSPD Wind speed WSHFT Wind shift WSTCH Wasatch Range WSW West-southwest WSWLY West-southwesterly WSWRN West-southwestern WSWWD West-southwestward WTR Water WTSPT Waterspout WUD Would Appendix B: Contractions and Acronyms Page 11-35
Aviation Weather Services, Advisory Circular 00-45G, Change 1 (July 2010) Contraction or Acronym Subject Defined WV West Virginia WVS Waves WW Watch notification message WWD Westward WWW World wide web WX Weather WY Wyoming X X Cross XCP Except XNG Crossing XPC Expect XPCD Expected XPCG Expecting XPCS Expects XPLOS Explosive XS Atmospherics XTND Extend XTNDD Extended XTNDG Extending XTRM Extreme XTRMLY Extremely Y YDA Yesterday YKN Yukon YLSTN Yellowstone Z Z Coordinated Universal Time (in meteorological messages) ZN Zone ZNS Zones
Appendix B: Contractions and Acronyms Page 11-36
Aviation Weather Services, Advisory Circular 00-45G, Change 1 (July 2010) APPENDIX C: STANDARD CONVERSION CHART Speed - Distance Temperature Pressure - Altitude Altimeter Setting М/Н KTS КМ/Н OF °C INS. MBS./PAs.
1007 120 50 INS. MBS./hPas. 100'S FT* 28.5 965 110 -180 12 400 230 970 -170 • 110 220 90 40 13 210 100 160 100 14 - 200 190 980 80 150 90 15 500 180 29.0 90 30 170 -140 80 16 T 160 990 80 70 -130 17 - 150
•120 70 20 18 600 - 140 130 29.5 - 1000 60 70 -110 19 120 -100 50 10 20 110 • 1010 60 700 - 100 50 90 40 21 90 30.0 22 50 80 30 80 - 1020 40 23 70 70 20 800 40 GO - 10 24 60 - 1030 30 10 25 50 30.5 30 50 26 40
- 1040
• 20 40 -20 27 900 30 20 -10
•30 28 - 20 -20 31.0 - 1050 10 20 -30 29 10 10 1000 10 -30 30
- 10Б0
• -40 -40 31 - 1050 --10 M/Н KTS KM/H ° C INS. MBS./hPas. 100°S 31.5 - 1065 * Standard Atmosphere FT* INS. MBS./hPas.
Figure C-1. Standard Conversion Chart Appendix C: Standard Conversion Chart Page 12-2
Aviation Weather Services, Advisory Circular 00-45G, Change 1 (July 2010) PPENDIX D: DENSITY ALTITUDE CALCULATION To determine density altitude:
1. Set the aircraft's altimeter to 29.92 inches of Mercury. The altimeter will indicate pressure altitude.
2. Read the outside air temperature.
3. Mark the intersection of pressure altitude (horizontal) and temperature (vertical) lines on the chart.
4. Read the density altitude from the diagonal lines.
20,000 - + + +
STANDARD ATMOSPHERE + + + + + + + + 15,000 - DENSITY ALTITUDE + 15,000 10,000 + 10,000 5,000 5,000 + + + + + + - 5,000 + → ZERO + + + -5,000 -50 -40 -30 -20 -10 Temperature °C 0°C 10 20 30 40 50 50 -40 -20 20 40 60 80 100 120 Temperature °F Figure D-1. Density Altitude Computation Chart Appendix D: Density Altitude Calculation Page 13-1
Aviation Weather Services, Advisory Circular 00-45G, Change 1 (July 2010) APPENDIX E: INTERNET LINKS
Table E-1. Selected National Weather Service (NWS) Links NWS Web Site Links National Weather Service (NWS)) Aviation Digital Data Service (ADDS) Aviation Weather Center (AWC) Hydrometeorological Prediction Center (HPC) Storm Prediction Center (SPC) Tropical Prediction Center (TPC) Alaska Aviation Weather Unit (AAWU) Center Weather Service Units (CWSU) Weather Forecast Offices (WFO) Weather Forecast Office (WFO) Honolulu, HI – Aviation Products Telecommunication Operations Center - NWS Fax Charts NWS Office at the FAA Academy Table E-2. Selected Federal Aviation Administration (FAA) Links FAA Web Site Links Federal Aviation Administration (FAA) Air Traffic Control System Command Center (ATCSCC) Automated Flight Service Station (AFSS)
Appendix E: Internet Links Page 14-1
Aviation Weather Services, Advisory Circular 00-45G, Change 1 (July 2010) Table E-3. Selected Links to Aviation Weather Products Aviation Weather Products Web Site Links Average Surface to 500 MB Relative Humidity Chart Collaborative Convective Weather Forecast (CFP) Constant Pressure Charts Convective Outlooks Current Icing Product (CIP) Center Weather Advisory (CWA) Area Forecast (FA) Significant Meteorological Advisory (SIGMET) – US (CONUS) Significant Meteorological Advisory (SIGMET) – International Airmen’s Meteorological Advisory (AIRMET) Forecast Icing Potential (FIP) Freezing Level Graphics High Level SIGWX Charts Lifted Index (LI) Analysis Chart Low Level SIGWX Charts Mid Level SIGWX Chart Meteorological Impact Statement (MIS) National Convective Weather Forecast (NCWF)1, 2 Pilot Weather Report Radar Summary Chart Aviation Routine Weather Report (METAR) / Aviation Selected Special Weather Report (SPECI) Surface Analysis Charts, 1, 2, 3, 4, 5 Short Range Surface Prog Charts Strike Probabilities of Tropical Cyclone Conditions (SPF) Terminal Aerodrome Forecast (TAF) Aviation Tropical Cyclone Advisory (TCA) Tropical Cyclone Public Advisory (TCP) Volcanic Ash Advisory Statement (VAAS) Volcanic Ash Forecast Transport and Dispersion (VAFTAD) Chart Watch Notification Messages Weather Depiction Chart Appendix E: Internet Links Page 14-2
Aviation Weather Services, Advisory Circular 00-45G, Change 1 (July 2010) Aviation Weather Products Web Site Links Wind and Temperature Aloft Forecast Graphics Wind and Temperature Aloft Forecasts (FB) Text
Appendix E: Internet Links Page 14-3
Aviation Weather Services, Advisory Circular 00-45G, Change 1 (July 2010) APPENDIX F: AWC ADVISORY PLOTTING CHART * HUH • YDC
• YQL • YXH • YYN
• EPH. GEG MLD°FCA
• HVR /ONP • GTF • GGW • ISN • MOT EUG. DSD • HLN •LWT
• MLS • DIK •BIS
• BIL OED *SHR- • DPR
• TWF • PIH •JAC BOY •CZI • RAP
• RBL • BPI *PYE. SAC • *FMG *SNS . CZQ • ENI FOAK • MOD • OAL • BAM • BCE *HVE • DTA • MTU /• JNC DBL •DEN AKO •MCK • OcS • CHE •LARCYS SNY •LBF • BFF • GLD. HLC
• EHF • BTY • DVC • HBU "PUB .LAA .GCK • BWG. • GSORDU
• LAS •PGS • TBC •RSK • ALS • CIM • TBE ARG • DYR
•DRK • INW
• ABQ • TCC •AMA SUN • VUZ
• PHX • TXO
• TCS • CME • LBB
•TUS .SSO .DMN CELP *INK• MAF NORA Figure F-1. AWC Advisory Plotting Chart Appendix F: AWC Advisory Plotting Chart Page 15-1
Aviation Weather Services, Advisory Circular 00-45G, Change 1 (July 2010) Table F-1. AWC Advisory Plotting Chart Reference Points STATION ID NAME STATE COUNTRY LATITUDE (degrees) LONGITUDE (degrees) ABI ABILENE TX US 32.48 -99.86 ABQ ALBUQUERQUE NM US 35.04 -10.682 ABR ABERDEEN SD US 45.42 -98.37 ACK NANTUCKET MA US 41.28 -70.03 ACT WACO TX US 31.66 -97.27 ADM ARDMORE OK US 34.21 -97.17 AEX ALEXANDRIA LA US 31.26 -92.50 AIR BELLAIRE OH US 40.02 -80.82 AKO AKRON CO US 40.16 -103.18 ALB ALBANY NY US 42.75 -73.80 ALS ALAMOSA CO US 37.35 -105.82 AMA AMARILLO TX US 35.29 -101.64 AMG ALMA GA US 31.54 -82.51 ANW AINSWORTH NE US 42.57 -99.99 APE APPLETON OH US 40.15 -82.59 ARG WALNUT RIDGE AR US 36.11 -90.95 ASP OSCODA MI US 44.45 -83.39 ATL ATLANTA GA US 33.63 -84.44 BAE MILWAUKEE WI US 43.12 -88.28 BAM BATTLE MNTN NV US 40.57 -116.92 BCE BRYCE_CANYON UT US 37.69 -112.30 BDF BRADFORD IL US 41.16 -89.59 BDL WINSOR LOCKS CT US 41.94 -72.69 BFF SCOTTSBLUFF NE US 41.89 -103.48 BGR BANGOR ME US 44.84 -68.87 BIL BILLINGS MT US 45.81 -108.63 BIS BISMARK ND US 46.77 -100.67 BJI BEMIDJI MN US 47.58 -95.02 BKE BAKER OR US 44.84 -117.81 BKW BECKLEY WV US 37.78 -81.12 BNA NASHVILLE TN US 36.14 -86.68 BOI BOISE ID US 43.55 -116.19 BOS BOSTON MA US 42.36 -70.99 BOY BOYSEN RESV. WY US 43.46 -108.30 BPI BIG PINEY WY US 42.58 -110.11 BRD BRAINERD MN US 46.35 -94.03 BRO BROWNSVILLE TX US 25.92 -97.38 BTR BATON ROUGE LA US 30.48 -91.30 BTY BEATTY NV US 36.80 -116.75 BUF BUFFALO NY US 42.93 -78.65 BUM BUTLER MO US 38.27 -94.49 BVL BONNEVILLE UT US 40.73 -113.76 BVT LAFAYETTE IN US 40.56 -87.07 BWG BOWLING GREEN KY US 36.93 -86.44 BZA YUMA AZ US 32.77 -114.60 CAE COLUMBIA SC US 33.86 -81.05 CDS CHILDRESS TX US 34.37 -100.28 CEW CRESTVIEW FL US 30.83 -86.68 Appendix F: AWC Advisory Plotting Chart Page 15-2
Aviation Weather Services, Advisory Circular 00-45G, Change 1 (July 2010) STATION ID NAME STATE COUNTRY LATITUDE (degrees) LONGITUDE (degrees) CHE HAYDEN CO US 40.52 -107.31 CHS CHARLESTON SC US 32.89 -80.04 CIM CIMARRON NM US 36.49 -104.87 CLE CLEVELAND OH US 41.42 -81.85 CLT CHARLOTTE NC US 35.22 -80.93 CME CHISUM NM US 33.34 -104.62 CON CONCORD NH US 43.22 -71.58 COU COLUMBIA MO US 38.82 -92.22 CRG JACKSONVILLE FL US 30.34 -81.51 CRP CORPUS CHRISTI TX US 27.90 -97.45 CSN CASSANOVA VA US 38.64 -77.87 CTY CROSS_CITY FL US 29.60 -83.05 CVG COVINGTON KY US 39.02 -84.70 CWK CENTEX TX US 30.38 -97.53 CYN COYLE NJ US 39.82 -74.43 CYS CHEYENNE WY US 41.21 -104.77 CZI CRAZY WOMAN WY US 44.00 -106.44 CZQ FRESNO CA US 36.88 -119.82 DBL EAGLE CO US 39.44 -106.90 DBQ DUBUQUE IA US 42.40 -90.71 DBS DUBOIS ID US 44.09 -112.21 DCA WASHINGTON DC US 38.86 -77.04 DDY CASPER WY US 43.09 -106.28 DEC DECATUR IL US 39.74 -88.86 DEN DENVER CO US 39.81 -104.66 DIK DICKINSIN ND US 46.86 -102.77 DLF LAUGHLIN AFB TX US 29.36 -100.77 DLH DULUTH MN US 46.80 -92.20 DLL DELLS WI US 43.55 -89.76 DLN DILLON MT US 45.25 -112.55 DMN DEMING NM US 32.28 -107.60 DNJ MC CALL ID US 44.77 -116.21 DPR DUPREE SD US 45.08 -101.72 DRK PRESCOTT AZ US 34.70 -112.48 DSD REDMOND OR US 44.25 -121.30 DSM DES MOINES IA US 41.44 -93.65 DTA DELTA UT US 39.30 -112.51 DVC DOVE CREEK CO US 37.81 -108.93 DXO DETROIT MI US 42.21 -83.37 DYR DYERSBURG TN US 36.02 -89.32 EAU EAU CLAIRE WI US 44.90 -91.48 ECG ELIZABETH CITY NC US 36.25 -76.18 ECK PECK MI US 43.26 -82.72 EED NEEDLES CA US 34.77 -114.47 EHF BAKERSFIELD CA US 35.48 -119.10 EIC SHREVEPORT LA US 32.77 -93.81 EKN ELKINS WV US 38.92 -80.10 ELD EL DORADO AR US 33.26 -92.74 ELP EL PASO TX US 31.82 -106.28 ELY ELY NV US 39.30 -114.85 Appendix F: AWC Advisory Plotting Chart Page 15-3