Austin-Bergstrom International to Washington Dulles International AUS → IAD
1,125 nautical miles (1,295 statute miles) northeast on a straight line, true course 057°, about 053° magnetic at the departure end (variation 4E). At 120 knots that is 7 h 52 min at the quickest height in today's winds (30,000 ft, a 23-knot tailwind), arriving about 4:40 am EDT (08:40 UTC), after sunset at the destination. Right now AUS is VFR, wind from the south-southeast (150°) at 12 knots; IAD is IFR, wind from the north (010°) at 7 knots. For planning, not a briefing: the legal preflight briefing comes from Flight Service (1-800-WX-BRIEF) or the FAA's own tools. Airlines fly this pair: 2,247 flights in the DOT's last twelve reported months, the route's page.
The route the straight line, the warnings crossed, restrictions, pilot reports and the airports along the way · click a mark for its words
Green, blue, red and purple airport dots are the flying conditions reported there now (VFR, marginal VFR, IFR, low IFR); grey means no report. Red areas are SIGMETs, orange areas AIRMETs, hatched red areas temporary flight restrictions. Map tiles: OpenFreeMap, data © OpenStreetMap contributors.
Warnings the route crosses SIGMETs and AIRMETs whose area the line passes through or comes within 25 nm of
- SIGMET E17E: thunderstorms (a convective SIGMET) up to 31,000 ft, moving from the west at 15 knots, until 8:55 pm CDT (01:55 UTC). Over the route from 906 to 1076 nm out.
as issued
WSUS31 KKCI 112355 MKCE WST 112355 CONVECTIVE SIGMET 17E VALID UNTIL 0155Z PA MD VA NC WV OH KY FROM 30WSW EWC-20E RIC-70NNE ILM-70W BKW-10ESE APE-30WSW EWC AREA TS MOV FROM 28015KT. TOPS TO FL310.
- SIGMET E16E: thunderstorms (a convective SIGMET) up to 32,000 ft, moving from the southwest at 25 knots, until 8:55 pm CDT (01:55 UTC). Near the route, at the destination end.
as issued
WSUS31 KKCI 112355 MKCE WST 112355 CONVECTIVE SIGMET 16E VALID UNTIL 0155Z NY NJ PA DE MD VA DC WV AND NJ NY CSTL WTRS FROM SAX-30SE JFK-10N DCA-60ENE EKN-SAX AREA EMBD TS MOV FROM 22025KT. TOPS TO FL320.
- AIRMET TANGO 6W: moderate turbulence above 18,000 ft from 28,000 ft to 40,000 ft. Over the route from 578 to 687 nm out.
- AIRMET SIERRA 3E: low cloud or poor visibility (IFR conditions) (due to ceilings below 1,000 ft, visibility below 3 miles, precipitation, mist). Over the route from 697 to 986 nm out.
- AIRMET SIERRA 4E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 727 to 1086 nm out.
- AIRMET TANGO 5W: moderate turbulence below 18,000 ft (due to mountain wave) up to 7,000 ft. Near the route, 916 nm along the route.
- AIRMET TANGO 3W: moderate turbulence above 18,000 ft from 21,000 ft to 33,000 ft. Over the last 110 nm of the route.
- AIRMET SIERRA 3E: low cloud or poor visibility (IFR conditions) (due to ceilings below 1,000 ft, visibility below 3 miles, precipitation, mist). Over the last 100 nm of the route.
A SIGMET warns of weather hazardous to all aircraft; an AIRMET of weather that matters to small aircraft and to flying without instruments. "From 60 to 180 nm out" is measured along the route from AUS.
Pilot reports along the route within 50 nm of the line, last three hours, the serious ones first
- A320 at 26,500 ft, 32 nm northwest, 5:46 pm CDT (22:46 UTC): moderate clear-air turbulence, remarks: ZFW86. 199 nm along the route, 32 nm northwest of the line.
as filed, and in English
GGG UA /OV GGG/TM 2246/FL265/TP A320/TB MOD CAT/RM ZFW86
- Report
- a routine report filed through GGG
- Where
- over GGG
- Time
- 22:46 UTC
- Height
- at 26,500 ft
- Aircraft
- A320
- Turbulence
- moderate clear-air turbulence
- Remarks
- ZFW86
- BE40 at 29,000 ft, 10 nm southeast, 6:22 pm CDT (23:22 UTC): moderate chop turbulence from 26,000 ft to 29,000 ft, remarks: zme. 548 nm along the route, 10 nm southeast of the line.
as filed, and in English
TUP UA /OV TUP045041/TM 2322/FL290/TP BE40/TB OCNL MOD CHOP 290-260/RM ZME
- Report
- a routine report filed through TUP
- Where
- 41 nm northeast (045°) of TUP
- Time
- 23:22 UTC
- Height
- at 29,000 ft
- Aircraft
- BE40
- Turbulence
- occasional moderate chop from 29,000 ft to 26,000 ft
- Remarks
- zme
- B763 at 29,000 ft, 16 nm southeast, 5:15 pm CDT (22:15 UTC): moderate turbulence, remarks: ZME31. 558 nm along the route, 16 nm southeast of the line.
as filed, and in English
MSL UA /OV MSL270020/TM 2215/FL290/TP B763/TB MOD/RM ZME31
- Report
- a routine report filed through MSL
- Where
- 20 nm west (270°) of MSL
- Time
- 22:15 UTC
- Height
- at 29,000 ft
- Aircraft
- B763
- Turbulence
- moderate
- Remarks
- ZME31
- A321 at 30,000 ft, 5 nm northwest, 6:45 pm CDT (23:45 UTC): moderate turbulence. 837 nm along the route, 5 nm northwest of the line.
as filed, and in English
IND UA /OV AZQ170020/TM 2345/FL300/TP A321/TB MOD
- Report
- a routine report filed through IND
- Where
- 20 nm south (170°) of AZQ
- Time
- 23:45 UTC
- Height
- at 30,000 ft
- Aircraft
- A321
- Turbulence
- moderate
- E170 at 22,500 ft, 33 nm northwest, 6:44 pm CDT (23:44 UTC): moderate clear-air turbulence from 18,000 ft to 22,500 ft, remarks: during the descent FRDMM7 star. At the destination end, 33 nm northwest of the line.
as filed, and in English
OKV UA /OV ESL100020/TM 2344/FL225/TP E170/TB CONS MOD CAT 180-225/RM DURD FRDMM7 STAR
- Report
- a routine report filed through OKV
- Where
- 20 nm east (100°) of ESL
- Time
- 23:44 UTC
- Height
- at 22,500 ft
- Aircraft
- E170
- Turbulence
- continuous moderate clear-air turbulence from 18,000 ft to 22,500 ft
- Remarks
- during the descent FRDMM7 star
- BE35 at 4,000 ft, 10 nm south, 5:03 pm CDT (22:03 UTC): light clear-air turbulence above 4,000 ft, wind 133° at 26 knots, remarks: ZFW30. 229 nm along the route, 10 nm south of the line.
as filed, and in English
BAD UA /OV EMG210025/TM 2203/FL040/TP BE35/WV 133026 KT/TB LGT CAT 040/RM ZFW30
- Report
- a routine report filed through BAD
- Where
- 25 nm southwest (210°) of EMG
- Time
- 22:03 UTC
- Height
- at 4,000 ft
- Aircraft
- BE35
- Wind
- wind from 133° at 26 knots knots
- Turbulence
- light clear-air turbulence at 4,000 ft
- Remarks
- ZFW30
- PC12 at 24,000 ft, 4 nm southwest, 5:28 pm CDT (22:28 UTC): light chop turbulence, remarks: ZFW28. 359 nm along the route, 4 nm southwest of the line.
as filed, and in English
LLQ UA /OV 17 S MON/TM 2228/FL240/TP PC12/TB CONS LGT CHOP/RM ZFW28
- Report
- a routine report filed through LLQ
- Where
- 17 south mon
- Time
- 22:28 UTC
- Height
- at 24,000 ft
- Aircraft
- PC12
- Turbulence
- continuous light chop
- Remarks
- ZFW28
- G280 at 41,000 ft, 49 nm northwest, 5:12 pm CDT (22:12 UTC): light turbulence, remarks: ZME44. 368 nm along the route, 49 nm northwest of the line.
as filed, and in English
PBF UA /OV PBF180005/TM 2212/FL410/TP G280/TB CONS LGT/RM ZME44
- Report
- a routine report filed through PBF
- Where
- 5 nm south (180°) of PBF
- Time
- 22:12 UTC
- Height
- at 41,000 ft
- Aircraft
- G280
- Turbulence
- continuous light
- Remarks
- ZME44
- A319 at 39,000 ft, 46 nm northwest, 6:11 pm CDT (23:11 UTC): no chop turbulence, remarks: smooth. 478 nm along the route, 46 nm northwest of the line.
as filed, and in English
MEM UA /OV MEM/TM 2311/FL390/TP A319/TB NEG CHOP/RM SMOOTH
- Report
- a routine report filed through MEM
- Where
- over MEM
- Time
- 23:11 UTC
- Height
- at 39,000 ft
- Aircraft
- A319
- Turbulence
- no chop
- Remarks
- smooth
- A319 at 32,000 ft, 48 nm northwest, 5:56 pm CDT (22:56 UTC): light to moderate chop turbulence, remarks: ZME62. 647 nm along the route, 48 nm northwest of the line.
as filed, and in English
BNA UA /OV BNA315020/TM 2256/FL320/TP A319/TB CONS LGT OCNL MOD CHOP/RM ZME62
- Report
- a routine report filed through BNA
- Where
- 20 nm northwest (315°) of BNA
- Time
- 22:56 UTC
- Height
- at 32,000 ft
- Aircraft
- A319
- Turbulence
- continuous light occasional moderate chop
- Remarks
- ZME62
- T206 at 9,000 ft, 31 nm southeast, 5:47 pm CDT (22:47 UTC): remarks: ZME60. 687 nm along the route, 31 nm southeast of the line.
as filed, and in English
CHA UA /OV CHA340032/TM 2247/FL090/TP T206/SK TOP070/RM ZME60
- Report
- a routine report filed through CHA
- Where
- 32 nm north (340°) of CHA
- Time
- 22:47 UTC
- Height
- at 9,000 ft
- Aircraft
- T206
- Sky
- TOP070
- Remarks
- ZME60
- E170 at 33,000 ft, 34 nm southeast, 5:22 pm CDT (22:22 UTC): light to moderate chop turbulence above 33,000 ft, remarks: ZTLFD-03. 747 nm along the route, 34 nm southeast of the line.
as filed, and in English
TYS UA /OV VXV270025/TM 2222/FL330/TP E170/TB CONS LGT OCNL MOD CHOP 330/RM ZTLFD-03
- Report
- a routine report filed through TYS
- Where
- 25 nm west (270°) of VXV
- Time
- 22:22 UTC
- Height
- at 33,000 ft
- Aircraft
- E170
- Turbulence
- continuous light occasional moderate chop at 33,000 ft
- Remarks
- ZTLFD-03
- E75S at 29,000 ft, 44 nm southeast, 5:21 pm CDT (22:21 UTC): light to moderate turbulence, remarks: ZTLFD-39. 767 nm along the route, 44 nm southeast of the line.
as filed, and in English
TYS UA /OV VXV/TM 2221/FL290/TP E75S/TB CONS LGT OCNL MOD/RM ZTLFD-39
- Report
- a routine report filed through TYS
- Where
- over VXV
- Time
- 22:21 UTC
- Height
- at 29,000 ft
- Aircraft
- E75S
- Turbulence
- continuous light occasional moderate
- Remarks
- ZTLFD-39
- S22T descending, 43 nm south, 7:24 pm CDT (00:24 UTC): a broken layer above 2,600 ft, remarks: during the descent RY23 tri. 856 nm along the route, 43 nm south of the line.
as filed, and in English
TRI UA /OV KTRI050002/TM 0024/FLUNKN/TP S22T/SK BKN026-TOPUNKN/RM DURD RY23 TRI
- Report
- a routine report filed through TRI
- Where
- 2 nm northeast (050°) of KTRI
- Time
- 00:24 UTC
- Height
- height not given
- Aircraft
- S22T
- Sky
- a broken layer from 2,600 ft, tops unknown
- Remarks
- during the descent RY23 tri
16 more routine reports are on the map.
Winds aloft along the route, and the time en route the forecast for use 20:00–03:00 UTC · at 120 knots true airspeed
The eastbound cruising heights for this course (VFR: odd thousands plus 500 ft; above 18,000 ft the forecast levels), with the wind averaged along the line from the 12 forecast points nearest it (CLL, SHV, LIT, MEM, HSV, BNA, TYS, TRI, CRW, ROA, EKN, RIC). A plus sign is a headwind, a minus sign a tailwind.
| Height | Average wind | Head- or tailwind | Temperature | Ground speed | Time en route | Arrival |
|---|---|---|---|---|---|---|
| 3,500 ft | 240° at 8 kt | −9 kt | 129 kt | 8 h 43 min | 5:31 am EDT (09:31 UTC) | |
| 5,500 ft | 280° at 13 kt | −11 kt | 12 °C | 131 kt | 8 h 35 min | 5:23 am EDT (09:23 UTC) |
| 7,500 ft | 280° at 14 kt | −11 kt | 12 °C | 131 kt | 8 h 35 min | 5:23 am EDT (09:23 UTC) |
| 9,500 ft | 290° at 15 kt | −11 kt | 9 °C | 131 kt | 8 h 35 min | 5:23 am EDT (09:23 UTC) |
| 11,500 ft | 300° at 16 kt | −9 kt | 6 °C | 129 kt | 8 h 43 min | 5:31 am EDT (09:31 UTC) |
| 13,500 ft | 300° at 17 kt | −9 kt | 2 °C | 129 kt | 8 h 43 min | 5:31 am EDT (09:31 UTC) |
| 15,500 ft | 300° at 18 kt | −10 kt | -2 °C | 130 kt | 8 h 39 min | 5:27 am EDT (09:27 UTC) |
| 17,500 ft | 300° at 19 kt | −11 kt | -6 °C | 131 kt | 8 h 35 min | 5:23 am EDT (09:23 UTC) |
| 18,000 ft FL180 | 300° at 19 kt | −11 kt | -7 °C | 131 kt | 8 h 35 min | 5:23 am EDT (09:23 UTC) |
| 24,000 ft FL240 | 280° at 23 kt | −16 kt | -17 °C | 136 kt | 8 h 16 min | 5:04 am EDT (09:04 UTC) |
| 30,000 ft FL300 | 280° at 32 kt | −23 kt | -31 °C | 143 kt | 7 h 52 min | 4:40 am EDT (08:40 UTC) |
| 34,000 ft FL340 | 280° at 32 kt | −23 kt | -40 °C | 143 kt | 7 h 52 min | 4:40 am EDT (08:40 UTC) |
| 39,000 ft FL390 | 280° at 30 kt | −21 kt | -50 °C | 141 kt | 7 h 59 min | 4:47 am EDT (08:47 UTC) |
Based on data from the 11th at 18:00 UTC; valid on the 12th at 00:00 UTC for use 20:00 to 03:00 UTC; temperatures above 24,000 ft are below zero. Heights are above sea level; a height is left out when the forecast has no wind for it over most of the line (the ground is higher). Ground speed is the airspeed less the headwind; the time en route is for the straight line and ignores climb, descent and routing around weather.
The forecast points as issued
| Point | From | 3,000 | 6,000 | 9,000 | 12,000 | 18,000 | 24,000 | 30,000 | 34,000 | 39,000 |
|---|---|---|---|---|---|---|---|---|---|---|
| CLL | used from 0 nm out; 48 nm from the line | 160/18 | 190/18 16° | 200/19 12° | 220/14 7° | 260/18 -5° | 250/20 -13° | 290/29 -29° | 290/31 -40° | 300/22 -53° |
| SHV | used from 149 nm out; 65 nm from the line | 190/11 | 230/19 17° | 230/26 12° | 260/15 7° | 280/16 -4° | 300/17 -15° | 300/34 -30° | 300/31 -41° | 310/42 -52° |
| LIT | used from 349 nm out; 86 nm from the line | 220/12 | 250/12 17° | 250/18 12° | 260/22 6° | 310/14 -5° | 310/25 -17° | 310/40 -31° | 310/38 -41° | 310/46 -52° |
| MEM | used from 398 nm out; 76 nm from the line | 240/9 | 280/14 17° | 280/20 12° | 290/25 5° | 320/25 -6° | 330/31 -18° | 320/52 -32° | 330/58 -41° | 320/42 -50° |
| HSV | used from 548 nm out; 62 nm from the line | 290/15 | 330/34 16° | 330/38 11° | 330/40 5° | 320/36 -7° | 320/31 -18° | 320/44 -34° | 330/53 -41° | 330/34 -48° |
| BNA | used from 598 nm out; 44 nm from the line | 280/13 | 340/34 16° | 330/38 10° | 330/44 5° | 330/39 -8° | 330/38 -19° | 320/49 -34° | 330/53 -40° | 330/35 -47° |
| TYS | used from 697 nm out; 63 nm from the line | 290/19 | 310/22 11° | 330/25 7° | 330/34 3° | 320/37 -7° | 300/37 -18° | 300/37 -34° | 280/29 -39° | 270/29 -48° |
| TRI | used from 797 nm out; 53 nm from the line | 310/28 11° | 320/32 7° | 330/30 2° | 300/28 -9° | 280/34 -21° | 250/37 -31° | 240/39 -38° | 250/35 -48° | |
| CRW | used from 896 nm out; 46 nm from the line | 320/16 | 310/16 12° | 320/12 7° | 320/12 2° | 330/15 -11° | 280/11 -22° | 230/26 -30° | 240/33 -37° | 240/37 -47° |
| ROA | used from 946 nm out; 45 nm from the line | 280/9 | 290/15 12° | 290/11 8° | 210/6 3° | 210/30 -6° | 220/46 -19° | 210/74 -30° | 220/78 -39° | 220/64 -48° |
| EKN | used from 996 nm out; 40 nm from the line | 270/18 13° | 310/5 7° | 140/7 3° | 210/16 -9° | 220/41 -20° | 210/57 -32° | 220/57 -38° | 230/49 -47° | |
| RIC | used from 1095 nm out; 84 nm from the line | 190/33 | 200/29 14° | 210/31 12° | 210/38 6° | 230/42 -7° | 230/68 -16° | 220/84 -29° | 220/86 -40° | 220/81 -52° |
The weather now: both ends and the airports along the way public airports with a weather report within 25 nm of the line, one for each stretch
| Airport | Where | Conditions | Wind | Visibility | Ceiling | Elevation | Reported |
|---|---|---|---|---|---|---|---|
| AUS Austin, TX | departure | VFR Sky: a few clouds at 8,000 feet, a few clouds at 12,000 feet, a few clouds at 25,000 feet | from the south-southeast (150°) at 12 knots | 10+ mi | none | 541 ft | 6:53 pm CDT (23:53 UTC) |
| CLL College Station, TX | 70 nm out, 17 nm southeast of the line, tower | VFR | from the south-southeast (150°) at 7 knots | 10+ mi | none | 320 ft | 23:53 UTC |
| DKR Crockett, TX | 139 nm out, 9 nm south of the line | no report just now | 348 ft | ||||
| SHV Shreveport, LA | 239 nm out, 9 nm northwest of the line, tower | VFR Sky: a broken layer at 30,000 feet | from the south (170°) at 3 knots | 10+ mi | 30,000 ft | 257 ft | 23:56 UTC |
| GLH Greenville, MS | 398 nm out, 11 nm south of the line, tower | VFR | from the south (180°) at 9 knots | 10+ mi | none | 130 ft | 23:53 UTC |
| TUP Tupelo, MS | 518 nm out, 23 nm south of the line, tower | VFR | calm | 10+ mi | none | 346 ft | 23:53 UTC |
| MQY Smyrna, TN | 657 nm out, 18 nm north of the line, tower | VFR | from the southeast (140°) at 3 knots | 10+ mi | none | 543 ft | 23:56 UTC |
| SCX Oneida, TN | 757 nm out, 2 nm west of the line | low IFR Sky: overcast at 400 feet Weather: mist | from the west-northwest (290°) at 4 knots | 3 mi | 400 ft | 1,544 ft | 00:35 UTC |
| LNP Wise, VA | 856 nm out, 13 nm southeast of the line | low IFR Sky: overcast at 400 feet Weather: light rain | from the west (270°) at 6 knots | 3 mi | 400 ft | 2,684 ft | 23:35 UTC |
| LWB Lewisburg, WV | 976 nm out, 8 nm south of the line, tower | marginal VFR Sky: overcast at 1,200 feet Weather: light rain | calm | 3 mi | 1,200 ft | 2,301 ft | 22:51 UTC |
| LUA Luray, VA | 1076 nm out, 3 nm northwest of the line | low IFR Sky: a broken layer at 400 feet, a broken layer at 1,100 feet, overcast at 1,900 feet | from the north-northeast (020°) at 4 knots | 10+ mi | 400 ft | 902 ft | 23:35 UTC |
| IAD Washington, DC | destination | IFR Sky: overcast at 700 feet Weather: mist | from the north (010°) at 7 knots | 5 mi | 700 ft | 312 ft | 7:52 pm EDT (23:52 UTC) |
The highest airport on this list sits at 2,684 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At IAD when you get there the forecast at the estimated arrival, 4:40 am EDT (08:40 UTC)
Wind from the north-northwest at 10 knots, gusting to 18, visibility 4 miles, light rain showers, mist, overcast at 600 feet IFR
The whole forecast for IAD
- From Sun 8:00 pm EDT (00:00 UTC): wind from the north at 7 knots, visibility 4 miles, light rain showers, mist, overcast at 700 feet
- From Sun 10:00 pm EDT (02:00 UTC): wind from the north-northwest at 6 knots, visibility 2 miles, rain showers, mist, overcast at 400 feet
- From Mon 4:00 am EDT (08:00 UTC): wind from the north-northwest at 10 knots, gusting to 18, visibility 4 miles, light rain showers, mist, overcast at 600 feet
- From Mon 6:00 am EDT (10:00 UTC): wind from the north-northwest at 11 knots, gusting to 19, visibility more than 6 miles, overcast at 1,400 feet
- From Mon 12:00 pm EDT (16:00 UTC): wind from the north-northwest at 13 knots, gusting to 21, visibility more than 6 miles, overcast at 2,100 feet
- From Mon 2:00 pm EDT (18:00 UTC): wind from the north-northwest at 10 knots, gusting to 17, visibility more than 6 miles, a broken layer at 4,000 feet
- From Mon 7:00 pm EDT (23:00 UTC): wind from the northwest at 6 knots, visibility more than 6 miles, scattered clouds at 25,000 feet
The forecast for AUS, the departure
- From Sun 7:00 pm CDT (00:00 UTC): wind from the south at 14 knots, visibility more than 6 miles, a few clouds at 6,000 feet, scattered clouds at 25,000 feet
- From Sun 10:00 pm CDT (03:00 UTC): wind from the south-southeast at 6 knots, visibility more than 6 miles, scattered clouds at 1,500 feet
- From Mon 7:00 am CDT (12:00 UTC): wind from the south-southeast at 3 knots, visibility more than 6 miles, a broken layer at 1,500 feet
- From Mon 12:00 pm CDT (17:00 UTC): wind from the south at 11 knots, visibility more than 6 miles, a broken layer at 2,500 feet
- From Mon 2:00 pm CDT (19:00 UTC): wind from the south at 13 knots, visibility more than 6 miles, a broken layer at 4,000 feet
Temporary flight restrictions on the line or within 25 nm of it
- 6/5849 Austin, TX, Friday, October 2, 2026 through Monday, October 12, 2026 UTC 6 nm from the route, at the departure end · drones kept away from a public gathering · until 12 October · ZHU
- 4/9383 WASHINGTON, DC., USA 8 nm from the route, at the destination end · security · ZDC
- 6/8600 Sterling, VA, Monday, October 12, 2026 through Monday, October 12, 2026 Local 4 nm from the route, at the destination end · a VIP movement · today · ZDC
Daylight
Sunset at AUS 7:03 pm CDT (00:03 UTC), at IAD 6:36 pm EDT (22:36 UTC) (civil twilight ends 7:02 pm EDT (23:02 UTC)). At 120 knots the arrival at IAD is before sunrise there (7:16 am EDT (11:16 UTC)).
Each restriction opens the FAA's own page with the exact area, heights and times. Ordinary notices to air missions (closed runways, lights out) are not shown: the FAA's notice search is not open to sites like this one at this time.
Radar and forecast charts for the regions crossed government pictures, the latest each time the page loads
Sources: the Aviation Weather Center's data service (SIGMETs, AIRMETs, graphical AIRMETs, pilot reports, winds and temperatures aloft, observations and terminal forecasts), the National Weather Service radar, the Weather Prediction Center's charts, the FAA's temporary flight restriction list and shapes, and the FAA's airport file for the positions, elevations and magnetic variation. Fetched when the page is viewed and kept a few minutes. Each leg is the straight line between its two airports; airways, terrain and airspace are not considered. The airports in detail: Austin-Bergstrom International, Washington Dulles International.