Aviation Weather Services, Advisory Circular 00-45F, Change 2 (March 2009) 17 APPENDIX H: AWC Geographical Area Designator Map AVIATION AREA FORECASTS (D-20) COASTAL
LOWER ABYS WSOM Issuance 91-3 5-3-91 GEOGRAPHICAL AREA DESIGNATOR MAP (COMMON TERMS USED IN AVIATION WEATHER FORECASTS] MISSISSIPPI TALLEY MINNESOTA
NORTH DAKOTA NORTH CENTRAL
ET PEEN RESERVON MONTANA MWS - SEPTEMBER 3990
ENTRAL CALIFORNIA Figure H-1: AWC Geographical Area Designator Map AC 00-45F, CHG 2 Appendix H: AWC Geographical Area Designator Map Page 17-1
Aviation Weather Services, Advisory Circular 00-45F, Change 2 (March 2009) 18 APPENDIX I: Present Weather Symbols 2 4 5 6 7 8 9 S $ (S) Widespread dust in Duat or sand Nell developed Duatstorn or auspension in the raised by wind, at dust devil(a) sandstorm within that of the fire of con within past hour 10 HELLELON tance at For in patche during past hour Partie toe fratine of alight The st to on slight at tine of 70 80 chant coi hain shower ahomer heavy olent rai wowerCa Baoc with thund 90 at aspociated Slight or moderate Slight or noderate Heavy thunderstorm Thunderston thunderstorn with reil at time of pandatorm at time beth hel de time poith hail at tine
• at time of obs tine or oc Figure I-1. Present Weather Symbols with Text Explanation AC 00-45F, CHG 2 Appendix I: Present Weather Symbols Page 18-1
Aviation Weather Services, Advisory Circular 00-45F, Change 2 (March 2009) Matching of METAR present weather text to symbol in table below is not n ily endorsed by the National Weather Service or the World Meteorological priority for plotting in event more than one symbol is possible (symbols in gray oxes have no corresponding METAR ( present weather text). Graphical repres tation of METARs using this table found at http://adds.aviatiorweather.gov 2 4 5 6 7 8 59 00 114 S 13 $ 9 12 (5) 00 HZ DU SA BLDU PO
BLSA VCBLDU VCPO
VOBLSA BLPY 58 56 = 50 57 = 51 (0) 33 T< 10 BR MIFG VCTS VIRGA VOSH TS SQ +FC ~] = KJ 20 53 == 52 40 VCFG PRFG FG ф = • : +DZ 37 25 ...
36 31 * 70 SN +SN IC 80 45 g
- 5H5N
- SHRA +SHRA +5HSN RA +SHGS 90 15 8 6 TS 4 Ř 15 P8 SHER any TS and +GR TSPL +TSPL any SA or DU + SHGR Figure I-2. Present Weather Symbols with Corresponding METAR/SPECI Present Weather Code AC 00-45F, CHG 2 Appendix I: Present Weather Symbols Page 18-2
Aviation Weather Services, Advisory Circular 00-45F, Change 2 (March 2009) 19 APPENDIX J: Turbulence and Icing Intensity Depictions Table J-1. Turbulence Intensity Intensity Aircraft Reaction Symbol Light Loose objects in aircraft remain at rest.
Moderate Unsecured objects are dislodged. Occupants feel definite strains against seat belts and shoulder straps.
Severe Occupants thrown violently against seat belts. Momentary loss of aircraft control. Unsecured objects tossed about.
Extreme Aircraft is tossed violently about, impossible to control. May cause structural damage.
Table J-2. Icing Intensity Intensity Aircraft Reaction Symbol Trace Ice becomes perceptible. Rate of accumulation slightly greater than sublimation. Deicing/anti-icing equipment is not used unless encountered for an extended period of time (over 1 hour).
Light The rate of accumulation may create a problem if flight is prolonged in this environment (over 1 hour). Occasional use of deicing/antiicing equipment removes or prevents accumulation. It does not present a problem if this equipment is used.
Moderate The rate of accumulation is such that even short encounters become potentially hazardous, and use of deicing/anti-icing equipment or diversion is necessary.
Severe The rate of accumulation is such that deicing/anti-icing equipment fails to reduce or control the hazard. Immediate diversion is necessary.
AC 00-45F, CHG 2 Appendix J: Turbulence and Icing Depictions Page 19-1