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Property of Lear Siegler. FORECASTS. Property of Lear Siegler. Terminal Aerodrome Forecast. Property of Lear Siegler. TAF. The expected meteorological conditions significant to aviation at an airport during the specified time issued by NWS.
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FORECASTS Property of Lear Siegler
Terminal Aerodrome Forecast Property of Lear Siegler
TAF • The expected meteorological conditions significant to aviation at an airport during the specified time issued by • NWS. • Airport is defined as the area within a 5nm radius of the center of the runway complex Property of Lear Siegler
TAF • Issued four times daily (every 6 hours) – 0000Z, 0600Z, 1200Z, 1800Z. • Valid for a 24 - hour period (except for • high-impact airports with 30-hr valid • times)
KATL-Hartsfield/Jackson Atlanta Intl KBDL-Bradley Intl KBOS-Gen Edward Lawrence Intl KBWI-Baltimore-Washington Intl KCLE-Cleveland/Hopkins Intl KCVG-Cincinnati-N Kentucky Intl KDEN-Denver Intl KDFW-Dallas/Ft Worth Intl KDTW-Detroit Metro Wayne Co KEWR-Newark Liberty Intl KIAD-Washington Dullus Intl KIAH-George Bush Intercontinental KIND-Indianapolis Intl KJFK-John F Kennedy Intl KLAX-Los Angeles Intl KMKE-General Mitchell Intl KMSP-Minneapolis/St Paul Intl KOAK-Metro Oakland Intl KONT-Ontario Intl KORD-Chicago O’Hare Intl KPHL-Philadelphia Intl KPIT-Pittsburgh Intl KSAN-San Diego Intl KSDF-Louisville Intl KSEA-Seattle-Tacoma Intl KSFO-San Francisco Intl KSLC-Salt Lake City Intl KSTL- Lambert-St Louis Intl KSWF-Stewart Intl PANC-Ted Stevens Anchorage Intl PHNL-Honolulu Intl PAFA-Fairbanks Intl High-Impact Cities with TAF’s for 30 hours
ORDER OF ENTRY • TYPE OF REPORT • STATION IDENTIFIER (FOUR LETTERS) • ISSUE TIME • VALID TIME • WIND • VISIBILITY • SIGNIFICANT WEATHER • SKY CONDITION • WIND SHEAR Property of Lear Siegler
KMGM 091750Z 0918/1018Z 22020KT 5SM HZFU SCT010 BKN025 FM 092030 30015G25KT 2SM BKN030 PROB40 1022/1024 30010KT 2SM SHRA OVC010 FM 100300 28010KT 2SM SHRA BKN025 FM 101200 27005KT 4SM FG OVC008 STATION IDENTIFIER Property of Lear Siegler
KMGM 091750Z 0918/1018Z 22020KT 5SM HZFU SCT010 BKN025 FM 092030 30015G25KT 2SM BKN030 PROB40 1022/1024 30010KT 2SM SHRA OVC010 FM 100300 28010KT 2SM SHRA BKN025 FM 101200 27005KT 4SM FG OVC008 • DATE TIME GROUP • TIME OF TRANSMISSION TO THE NEAREST MINUTE
KMGM 091750Z 0918/1018Z 22020KT 5SM HZFU SCT010 BKN025 FM 092030 30015G25KT 2SM BKN030 PROB40 1022/1024 30010KT 2SM SHRA OVC010 FM 100300 28010KT 2SM SHRA BKN025 FM 101200 27005KT 4SM FG OVC008 • VALID DATE /TIME • VALID 24HR FORECAST PERIOD
KMGM 091750Z 0918/1018Z 22020KT 5SM HZFU SCT010 BKN025 FM 092030 30015G25KT 2SM BKN030 PROB40 1022/1024 30010KT 2SM SHRA OVC010 FM 100300 28010KT 2SM SHRA BKN025 FM 101200 27005KT 4SM FG OVC008 • TIME DIVIDER - FROM • FROM 2030 on the 9th day, a rapid • change < 1hr
KMGM 091750Z 0918/1018Z 22020KT 5SM HZFU SCT010 BKN025 FM 092030 30015G25KT 2SM BKN030 PROB40 1022/1024 30010KT 2SM SHRA OVC010 FM 100300 28010KT 2SM SHRA BKN025 FM 101200 27005KT 4SM FG OVC008 TIME DIVIDER - FROM
KDHN 091754Z 0918/1018Z 00000KT 1/2SM FG VV003 BECMG 0920/0922 02005KT 2SM FGHZ FM100100 03010KT 3SM -SHRA SCT008 BKN020 FM101000 06015KT 4SM RA OVC020 TEMPO 1012/1014 06010KT 1SM +SHRA OVC010 FM101500 09010KT 5SM BKN010 BKN030 OVC060 • CHANGE INDICATOR - BECMG • Gradual change on the 9th day between 2000Z and 2200Z Property of Lear Siegler
KDHN 091754Z 0918/1018Z 00000KT 1/2SM FG VV003 BECMG 0920/0922 02005KT 2SM FGHZ FM100100 03010KT 3SM -SHRA SCT008 BKN020 FM101000 06015KT 4SM RA OVC020 TEMPO 1012/1014 06010KT 1SM +SHRA OVC010 FM101500 09010KT 5SM BKN010 BKN030 OVC060 • CHANGE INDICATOR TEMPO • Temporary change on the 10th day between 1200Z and1400Z. Property of Lear Siegler
KMGM 091750Z 0918/1018Z 22020KT 5SM HZFU SCT010 BKN025 FM 092030 30015G25KT 2SM BKN030 PROB40 1022/1024 30010KT 2SM SHRA OVC010 FM 100300 28010KT 2SM SHRA BKN025 FM 101200 27005KT 4SM FG OVC008 PROBABILITY 40-49% Chance between 2200 and 2400 on the 10th day of the month
TAF • P6SM • Visibility Plus 6SM • NSW • No Significant Weather • SKY CONDITIONS • CB Only cloud type in TAF • Low Level Wind Shear (non-TS shear w/in 2000 ft) • WS010/18040KT • Placed in TAF when PIREPS report airspeed change of 20 kts or more or vertical shears of 10 kts or more per 100 ft . Property of Lear Siegler
KDHN 091754Z 0918/1018Z 00000KT 1/2SM FG VV003 BECMG 0920/0922 02005KT 2SM FGHZ FM100100 03010KT 3SM -SHRA SCT008 BKN020 FM101000 06015KT 4SM RA OVC020 TEMPO 1012/1014 06010KT 1SM +SHRA OVC010 FM101500 09010KT 5SM BKN010 BKN030 OVC060 Forecast for 9th day @ 2300Z ? Property of Lear Siegler
KDHN 091754Z 0918/1018Z 00000KT 1/2SM FG VV003 BECMG 0920/0922 02005KT 2SM FGHZ FM100100 03010KT 3SM -SHRA SCT008 BKN020 FM101000 06015KT 4SM RA OVC020 TEMPO 1012/1014 06010KT 1SM +SHRA OVC010 FM101500 09010KT 5SM BKN010 BKN030 OVC060 Forecast for 9th day at 1900Z?
KDHN 091754Z 0918/1018Z 00000KT 1/2SM FG VV003 BECMG 0920/0922 02005KT 2SM FGHZ FM100100 03010KT 3SM -SHRA SCT008 BKN020 FM101000 06015KT 4SM RA OVC020 TEMPO 1012/1014 06010KT 1SM +SHRA OVC010 FM101500 09010KT 5SM BKN010 BKN030 OVC060 Forecast for 10th day at 1030Z ?
KDHN 091754Z 0918/1018Z 00000KT 1/2SM FG VV003 BECMG 0920/0922 02005KT 2SM FGHZ FM100100 03010KT 3SM -SHRA SCT008 BKN020 FM101000 06015KT 4SM RA OVC020 TEMPO 1012/1014 06010KT 1SM +SHRA OVC010 FM101500 09010KT 5SM BKN010 BKN030 OVC060 Forecast for 10th day at 1600Z ?
Military TAFs Maximum Temp oC and Forecast Time Visibility greater than 6SM Travis AFB, CA KSUU 1011/1111 24010G15KT 9999 BKN180 QNH3020INS……. …BECMG 1104/1105 20010G15KT 8000 –RA BR BKN030VOVC050 QNH3005INS T11/23Z T08/13Z 1600 meters = 1 SM 6000 meters = 4 SM 8000 meters = 5 SM 9000 meters = 6 SM 9999 meters = +6 SM 1600 meters = 1 SM 6000 meters = 4 SM 8000 meters = 5 SM 9000 meters = 6 SM 9999 meters = +6 SM Forecasted Altimeter Setting (hg) Minimum Temp oC and Forecast Time
BECMG CLR ? Property of Lear Siegler
ELO #2 ACTION: The student will interpret data contained in winds aloft forecast charts CONDITION: Given pertinent information about a winds aloft forecast STANDARD: IAW AC 00-45F
WINDS ALOFT FORECAST Data based on 010000Z Valid 010600Z FOR USE 0200-0900Z. TEMPS NEG ABV 24000 FT 3000 6000 9000 12000 18000 24000 MKC 9900 1709+06 2018+00 2130-06 2242-18 2361-30 Issue times: Winds and Temperature Aloft forecasts are issued 4 times per day and overlap each other by one hour (beginning and ending ). Each chart covers a specific area, usually several states. Property of Lear Siegler
Forecast Levels: Begin usually at 6000 feet MSL Winds will be given for 6000, 9000, 12,000, 15,000, 18,000, 24,000, 30,000, 34,000, and 39,000 foot levels
Through 15,000 feet, levels are MSL altitude, 18,000 feet and above are PA Winds are not normally given for altitudes below 1,500 feet of the surface Temps are not normally given within 2,500 feet of the surface
Wind direction Given in reference to True North to the nearest 10 degrees Shown in two digits
Wind Speeds Given in knots (2 digits) Wind Speeds of less than 5 knots are shown as 9900
2312 would be? From 230 at 12 knots 1820? From 180 at 20 knots 9900? Light and variable winds – speeds of less than 5 knots
Winds above 100 knots – Do the math! Add 50 to the direction Subtract 100 from speed
Winds from 250 degrees at 145 knots would look like? (250 direction +50 = 75, 145 knot winds - 100 = 45) 7545 Winds from 180 degrees at 180 knots would look like? 6880
Forecast winds of 200 knots or more will be shown as 199 knots Winds from 270 at 250 knots would look like? 7799
Temperatures In Celsius (two digits), + for positive and - for negative temps Temps above 24,000 feet are always assumed to be negative
Sample Winds Aloft Forecast Data based on 010000Z Valid 010600Z FOR USE 0200-0900Z. TEMPS NEG ABV 24000 FT 3000 6000 9000 12000 18000 24000 MKC 9900 1709+06 2018+00 2130-06 2242-18 2361-30
Flight Weather Briefing DD-Form 175-1
BO6 / 227 000224 20025/+14oc Property of Lear Siegler
227 000224 06/03/06 Property of Lear Siegler
BO6 / 227 000224 B06 /227 Property of Lear Siegler
BO6 / 227 000224 Property of Lear Siegler
BO6 / 227 000224 Property of Lear Siegler
BO6 / 227 000224 Property of Lear Siegler
BO6 / 227 000224 Property of Lear Siegler
BO6 / 227 000224 Property of Lear Siegler Property of Lear Siegler
BO6 / 227 000224 Property of Lear Siegler
BO6 / 227 000224 Property of Lear Siegler
BO6 / 227 000224 Property of Lear Siegler
BO6 / 227 000224 Property of Lear Siegler
BO6 / 227 000224 Property of Lear Siegler