background image - - 28. Key to Aerodrome Forecast (TAF) and Aviation Routine Weather Report (METAR) FIG 7 - - Key to Aerodrome Forecast (TAF) and Aviation Routine Weather Report (METAR) (Front) Key to Aerodrome Forecast (TAF) and Aviation Routine Weather Report (METAR) (Front) TAF KPIT 091730Z 0918/1024 15005KT 5SM HZ FEW020 WS010/31022KT FM091930 30015G25KT 3SM SHRA OVC015 TEMPO 0920/0922 1/2SM +TSRA OVC008CB FM100100 27008KT 5SM SHRA BKN020 OVC040 PROB30 1004/1007 1SM -RA BR FM101015 18005KT 6SM -SHRA OVC020 BECMG 1013/1015 P6SM NSW SKC NOTE : Users are cautioned to confirm and TIME of the TAF. For example FM 0000 is 0000Z on the 10th . Do not confuse with 1000Z! METAR KPIT 091955Z COR 22015G25KT 3/4SM R28L/2600FT TSRA OVC010CB 18/16 A2992 RMK SLP045 T01820159 Forecast Explanation Report TAF Message type: TAF-routine or TAF AMD-amended forecast, METAR- hourly, SPECI-special or TESTM-non-commissioned ASOS report METAR KPIT ICAO location indicator KPIT 091730Z Issuance time: ALL times in UTC "Z", 2-digit date, 4-digit time 091955Z 0918/1024 Valid period, either 24 hours or 30 hours. The first two digits of EACH four digit number indicate the date of the valid period, the final two di gits indicate the time (valid from 18Z on the 9 to 24Z on the 10 ). In U.S. METAR: CORrected ob; or AUTOmated ob for automated re port with no human intervention; omitted when observer logs on. COR 15005KT Wind: 3 digit true-north direction, nearest 10 degrees (or VaRiaBle); next 2-3 digits for speed and unit, KT (KMH or MPS); as needed, Gust and maximum speed; 00000KT for calm; for METAR, if direction varies 60 degrees or more, Variability appended, e.g., 180V260 22015G25KT 5SM Prevailing visibility; in U.S., Statute Miles & fractions; above 6 miles in TAF Plus6SM. (Or, 4-digit minimum visibility in meters and as re quired, lowest value with direction) SM Runway Visual Range: R; 2-digit runway designator Left, Center, or Right as needed; "/", Minus or Plus in U.S., 4-digit value, FeeT in U.S., (usually meters elsewhere); 4-digit value Variability 4-digit value (and tendency Down, Up or No change) R28L/2600FT HZ Significant present, forecast and recent weather: see table (on back) TSRA FEW020 Cloud amount, height and type: Sky Clear 0/8, FEW >0/8-2/8, ScaTtered 3/8-4/8, BroKeN 5/8-7/8, OverCast 8/8; 3-digit height in hundreds of ft; Towering Cumulus or CumulonimBus in METAR ; in TAF , only CB. Vertical Visibility for obscured sky and height "VV004". More than 1 layer may be reported or forecast. In automated METAR reports only, CleaR for "clear below 12,000 feet" OVC 010CB Temperature: degrees Celsius; first 2 digits, temperature "/" last 2 digits, dew-point temperature; Minus for below zero, e.g., M06 18/16 Altimeter setting: indicator and 4 digits; in U.S., A-inches and hun dredths; (Q-hectoPascals, e.g., Q1013) A2992 WS010/31022KT In U.S. TAF , non-convective low-level (<=2,000 ft) Wind Shear; 3-digit height (hundreds of ft); "/"; 3-digit wind direction and 2-3 digit wind speed above the indicated height, and unit, KT Meteorology - -