property of lear siegler. 7 out of 10 atmosphere & airmasses, pressure & winds, stability...

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


• Valid for a 24 - hour period (except for high-impact airports with 30-hr valid times)

• Issued four times daily (every 6 hours) – 0000Z, 0600Z, 1200Z, 1800Z.

TAF

KATL-Hartsfield/Jackson Atlanta IntlKBDL-Bradley IntlKBOS-Gen Edward Lawrence IntlKBWI-Baltimore-Washington IntlKCLE-Cleveland/Hopkins IntlKCVG-Cincinnati-N Kentucky IntlKDEN-Denver IntlKDFW-Dallas/Ft Worth IntlKDTW-Detroit Metro Wayne CoKEWR-Newark Liberty IntlKIAD-Washington Dullus IntlKIAH-George Bush Intercontinental KIND-Indianapolis IntlKJFK-John F Kennedy IntlKLAX-Los Angeles IntlKMKE-General Mitchell Intl

KMSP-Minneapolis/St Paul IntlKOAK-Metro Oakland IntlKONT-Ontario IntlKORD-Chicago O’Hare IntlKPHL-Philadelphia IntlKPIT-Pittsburgh IntlKSAN-San Diego IntlKSDF-Louisville IntlKSEA-Seattle-Tacoma IntlKSFO-San Francisco IntlKSLC-Salt Lake City IntlKSTL- Lambert-St Louis IntlKSWF-Stewart IntlPANC-Ted Stevens Anchorage IntlPHNL-Honolulu IntlPAFA-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


STATION IDENTIFIER

KMGM 091750Z 0918/1018Z 22020KT 5SM HZFU SCT010 BKN025FM 092030 30015G25KT 2SM BKN030 PROB40 1022/1024 30010KT 2SM SHRA OVC010FM 100300 28010KT 2SM SHRA BKN025FM 101200 27005KT 4SM FG OVC008


DATE TIME GROUPTIME OF TRANSMISSION TO THE NEAREST MINUTE


VALID DATE /TIMEVALID 24HR FORECAST PERIOD


TIME DIVIDER - FROMFROM 2030 on the 9th day, a rapidchange < 1hr


TIME DIVIDER - FROM


CHANGE INDICATOR - BECMGGradual change on the 9th day between 2000Z and 2200Z

KDHN 091754Z 0918/1018Z 00000KT 1/2SM FG VV003

BECMG 0920/0922 02005KT 2SM FGHZFM100100 03010KT 3SM -SHRA SCT008 BKN020FM101000 06015KT 4SM RA OVC020 TEMPO 1012/1014 06010KT 1SM +SHRA

OVC010FM101500 09010KT 5SM BKN010 BKN030

OVC060


CHANGE INDICATOR TEMPOTemporary change on the 10th day between 1200Z and1400Z. Property of Lear Siegler

KDHN 091754Z 0918/1018Z 00000KT 1/2SM FG VV003

BECMG 0920/0922 02005KT 2SM FGHZFM100100 03010KT 3SM -SHRA SCT008 BKN020FM101000 06015KT 4SM RA OVC020 TEMPO 1012/1014 06010KT 1SM +SHRA


OVC060

PROBABILITY40-49% Chance between 2200 and 2400on the 10th day of the month

KMGM 091750Z 0918/1018Z 22020KT 5SM HZFU SCT010 BKN025

FM 092030 30015G25KT 2SM BKN030 PROB40 1022/1024 30010KT 2SM SHRA OVC010FM 100300 28010KT 2SM SHRA BKN025FM 101200 27005KT 4SM FG OVC008

• 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)

– WS010/18040KTPlaced in TAF when PIREPS report airspeed change of 20 kts or more or

vertical shears of 10 kts or more per 100 ft .

TAF


KDHN 091754Z 0918/1018Z 00000KT 1/2SM FG VV003

BECMG 0920/0922 02005KT 2SM FGHZFM100100 03010KT 3SM -SHRA SCT008

BKN020FM101000 06015KT 4SM RA OVC020 TEMPO 1012/1014 06010KT 1SM +SHRA


OVC060


Forecast for 9th day @ 2300Z ?

KDHN 091754Z 0918/1018Z 00000KT 1/2SM FG VV003




OVC060

Forecast for 9th day at 1900Z?

KDHN 091754Z 0918/1018Z 00000KT 1/2SM FG VV003




OVC060

Forecast for 10th day at 1030Z ?

KDHN 091754Z 0918/1018Z 00000KT 1/2SM FG VV003




OVC060

Forecast for 10th day at 1600Z ?

KSUU 1011/1111 24010G15KT 9999 BKN180 QNH3020INS…….

…BECMG 1104/1105 20010G15KT 8000 –RA BR BKN030VOVC050 QNH3005INS T11/23Z T08/13Z

Visibility greater than 6SM

Forecasted Altimeter

Setting (hg)

Travis AFB, CA

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

Minimum Temp oC and

Forecast Time

Maximum Temp oC and

Forecast Time

BECMG CLR ?


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.

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?

7545

Winds from 180 degrees at 180 knots would look like?

6880

(250 direction +50 = 75, 145 knot winds - 100 = 45)

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


000224

BO6 / 227

20025/+14oc

000224

06/03/06


227


B06 /227

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Property of Lear SieglerProperty of Lear Siegler

BO6 / 227

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BO6 / 227

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045 20025 /+14 CX X X

X

XXX

XX

XX

HEY-MXF HEY-MXF HVY NRHEY-MXF

HEY-MXF060 110 HEY-MXF

5


MXF

BKN 050

3 18020

2999

1312

1512


1200 AJL1330 Your Signature

x

Previous edition may be used

Safety First…

Use all resources of information in your flight planning.

“Someone is waiting back home.”

ELY, NV

STOPSTOP

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property of lear siegler. 7 out of 10 atmosphere & airmasses, pressure & winds, stability...

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