Plan a flight · Sun 4:48 pm PDT (23:48 UTC)

Seattle-Tacoma International to Austin-Bergstrom International SEA → AUS

1,538 nautical miles (1,769 statute miles) southeast on a straight line, true course 124°, about 108° magnetic at the departure end (variation 16E). At 120 knots that is 11 h 14 min at the quickest height in today's winds (39,000 ft, a 17-knot tailwind), arriving about 6:02 am CDT (11:02 UTC), after sunset at the destination. Right now SEA is VFR, wind from the north-northeast (020°) at 9 knots; AUS is VFR, wind from the south (170°) at 12 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: 4,109 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 W67W: thunderstorms (a convective SIGMET) up to 28,000 ft, moving from the south at 40 knots, until 5:55 pm PDT (00:55 UTC). Over the route from 489 to 619 nm out.

as issued

WSUS33 KKCI 112255
MKCW WST 112255
CONVECTIVE SIGMET 67W
VALID UNTIL 0055Z
WY UT ID NV
FROM 40S DBS-40WNW BPI-50N HVE-50W DTA-50SSE TWF-40S DBS
AREA EMBD TS MOV FROM 20040KT. TOPS TO FL280.

SIGMET W66W: thunderstorms (a convective SIGMET) up to 38,000 ft, moving from the southwest at 40 knots, until 5:55 pm PDT (00:55 UTC). Over the route from 719 to 729 nm out.
as issued
```
WSUS33 KKCI 112255
MKCW WST 112255
CONVECTIVE SIGMET 66W
VALID UNTIL 0055Z
CO WY UT
FROM 10NW OCS-60W CHE-50ESE MTU-50N MTU-10NW OCS
AREA TS MOV FROM 21040KT. TOPS TO FL380.
```

SIGMET W63W: thunderstorms (a convective SIGMET) up to 37,000 ft, moving from the southwest at 40 knots, until 5:55 pm PDT (00:55 UTC). Over the route from 789 to 1058 nm out.

as issued

WSUS33 KKCI 112255
MKCW WST 112255
CONVECTIVE SIGMET 63W
VALID UNTIL 0055Z
CO NM AZ UT
FROM 30SSW MTU-30NW PUB-20NW TCC-60SE ABQ-40N SJN-30SSW MTU
AREA SEV TS MOV FROM 23040KT. TOPS TO FL370.
WIND GUSTS TO 50KT POSS.

AIRMET ZULU 2C: moderate icing up to 14,000 ft. Over the route from 110 to 290 nm out.
AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 170 to 899 nm out.
AIRMET TANGO 4W: moderate turbulence above 18,000 ft from 18,000 ft to 36,000 ft. Over the route from 280 to 939 nm out.
AIRMET SIERRA 4E: low cloud or poor visibility (IFR conditions) (due to ceilings below 1,000 ft, visibility below 3 miles, precipitation, mist). Over the route from 329 to 559 nm out.
AIRMET ZULU 3C: moderate icing up to 22,000 ft. Over the route from 359 to 709 nm out.
AIRMET TANGO 4W: moderate turbulence below 18,000 ft up to 18,000 ft. Over the route from 529 to 1058 nm out.
AIRMET TANGO 1W: low-level wind shear (due to air speed loss or gain of 20 knots or more below 2,000 ft above the ground). Over the route from 549 to 869 nm out.
AIRMET SIERRA 2E: low cloud or poor visibility (IFR conditions) (due to ceilings below 1,000 ft, visibility below 3 miles, precipitation, mist). Over the route from 649 to 679 nm out.
AIRMET TANGO 5W: strong surface winds (30 knots or more) (due to sustained surface winds greater than 30 knots). Near the route, 749 nm along 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 SEA.

Pilot reports along the route within 50 nm of the line, last three hours, the serious ones first

urgent PC12 at 13,000 ft, 36 nm southwest, 2:48 pm PDT (21:48 UTC): severe turbulence from 13,000 ft to 14,000 ft, remarks: lots of moderate, moments of severe. 569 nm along the route, 36 nm southwest of the line.
as filed, and in English
```
SLC UUA /OV OGD280010/TM 2148/FL130/TP PC12/TB SEV 140-130/RM LOTS OF MODERATE, MOMENTS OF SEV
```
Report
an urgent report filed through SLC
Where
10 nm west (280°) of OGD
Time
21:48 UTC
Height
at 13,000 ft
Aircraft
PC12
Turbulence
severe from 14,000 ft to 13,000 ft
Remarks
lots of moderate, moments of severe
PC12 at 16,000 ft, 32 nm southwest, 2:01 pm PDT (21:01 UTC): moderate turbulence, light rime icing from 16,000 ft to 23,000 ft, -8 °C, remarks: during the descent. 559 nm along the route, 32 nm southwest of the line.
as filed, and in English
```
SLC UA /OV OGD300020/TM 2101/FL160/TP PC12/TA M08/TB MOD TURB/IC LT RIME 230-160/RM DURD
```
Report
a routine report filed through SLC
Where
20 nm northwest (300°) of OGD
Time
21:01 UTC
Height
at 16,000 ft
Aircraft
PC12
Temperature
−8 °C
Turbulence
moderate turbulence
Icing
lt rime from 23,000 ft to 16,000 ft
Remarks
during the descent
A339 at 16,000 ft, 23 nm southwest, 4:35 pm PDT (23:35 UTC): moderate chop turbulence up to 16,000 ft, remarks: during the climb zlc. 579 nm along the route, 23 nm southwest of the line.
as filed, and in English
```
OGD UA /OV OGD063012/TM 2335/FL160/TP A339/TB MOD CHOP 160 BLO/RM DURC /ZLC
```
Report
a routine report filed through OGD
Where
12 nm northeast (063°) of OGD
Time
23:35 UTC
Height
at 16,000 ft
Aircraft
A339
Turbulence
moderate chop at 16,000 ft below
Remarks
during the climb zlc
E75L at 14,500 ft, 29 nm southwest, 4:05 pm PDT (23:05 UTC): moderate turbulence up to 15,800 ft, heavy rain, remarks: during the climb zlc. 579 nm along the route, 29 nm southwest of the line.
as filed, and in English
```
OGD UA /OV OGD086008/TM 2305/FL145/TP E75L/WX +RA/TB MOD 158 BLO/RM DURC /ZLC
```
Report
a routine report filed through OGD
Where
8 nm east (086°) of OGD
Time
23:05 UTC
Height
at 14,500 ft
Aircraft
E75L
Weather
heavy rain
Turbulence
moderate at 15,800 ft below
Remarks
during the climb zlc
E75L at 12,500 ft, 32 nm southwest, 3:25 pm PDT (22:25 UTC): moderate turbulence. 589 nm along the route, 32 nm southwest of the line.
as filed, and in English
```
HIF UA /OV HIF103005/TM 2225/FL125/TP E75L/TB MOD /ZLC
```
Report
a routine report filed through HIF
Where
5 nm east (103°) of HIF
Time
22:25 UTC
Height
at 12,500 ft
Aircraft
E75L
Turbulence
moderate zlc
A321 at 31,000 ft, 26 nm northeast, 1:57 pm PDT (20:57 UTC): moderate chop turbulence, remarks: during the climb FL300-320 zlc. 689 nm along the route, 26 nm northeast of the line.
as filed, and in English
```
VEL UA /OV VEL354021/TM 2057/FL310/TP A321/TB CONS MOD CHOP /RM DURC FL300-320 /ZLC
```
Report
a routine report filed through VEL
Where
21 nm north (354°) of VEL
Time
20:57 UTC
Height
at 31,000 ft
Aircraft
A321
Turbulence
continuous moderate chop
Remarks
during the climb FL300-320 zlc
E170 at 10,000 ft, 20 nm southwest, 4:41 pm PDT (23:41 UTC): moderate turbulence up to 10,000 ft, remarks: during the climb. 789 nm along the route, 20 nm southwest of the line.
as filed, and in English
```
GJT UA /OV GJT144009/TM 2341/FL100/TP E170/TB MOD SFC-100/RM DURC
```
Report
a routine report filed through GJT
Where
9 nm southeast (144°) of GJT
Time
23:41 UTC
Height
at 10,000 ft
Aircraft
E170
Turbulence
moderate from the surface to 10,000 ft
Remarks
during the climb
B737 at 36,000 ft, 49 nm northeast, 2:28 pm PDT (21:28 UTC): moderate turbulence, remarks: zdvwc. 819 nm along the route, 49 nm northeast of the line.
as filed, and in English
```
ASE UA /OV DBL/TM 2128/FL360/TP B737/TB MOD/RM ZDVWC
```
Report
a routine report filed through ASE
Where
over DBL
Time
21:28 UTC
Height
at 36,000 ft
Aircraft
B737
Turbulence
moderate
Remarks
zdvwc
C680A at 16,000 ft, 41 nm northeast, 3:59 pm PDT (22:59 UTC): moderate turbulence, scattered clouds above 16,000 ft, remarks: during the descent. 829 nm along the route, 41 nm northeast of the line.
as filed, and in English
```
ASE UA /OV HAERI/TM 2259/FL160/TP C680A/SK SCT160/TB CONS MOD/RM DURD
```
Report
a routine report filed through ASE
Where
haeri
Time
22:59 UTC
Height
at 16,000 ft
Aircraft
C680A
Sky
scattered clouds from 16,000 ft
Turbulence
continuous moderate
Remarks
during the descent
C680 at 18,000 ft, 21 nm northeast, 3:35 pm PDT (22:35 UTC): moderate turbulence, remarks: from 18,000 ft to 10,000 ft. 829 nm along the route, 21 nm northeast of the line.
as filed, and in English
```
ASE UA /OV ASE230020/TM 2235/FL180/TP C680/TB MOD/RM 180-100
```
Report
a routine report filed through ASE
Where
20 nm southwest (230°) of ASE
Time
22:35 UTC
Height
at 18,000 ft
Aircraft
C680
Turbulence
moderate
Remarks
from 18,000 ft to 10,000 ft
LJ40 at 19,000 ft, 31 nm northeast, 2:32 pm PDT (21:32 UTC): moderate turbulence. 829 nm along the route, 31 nm northeast of the line.
as filed, and in English
```
ASE UA /OV ASE240010/TM 2132/FL190/TP LJ40/TB MOD
```
Report
a routine report filed through ASE
Where
10 nm southwest (240°) of ASE
Time
21:32 UTC
Height
at 19,000 ft
Aircraft
LJ40
Turbulence
moderate
GLF5 at 10,000 ft, 20 nm southwest, 3:06 pm PDT (22:06 UTC): moderate turbulence. 1428 nm along the route, 20 nm southwest of the line.
as filed, and in English
```
TEB UA /OV MUGSY/TM 2206/FL100/TP GLF5/TB MODERATE FROM 100 TO 50
```
Report
a routine report filed through TEB
Where
mugsy
Time
22:06 UTC
Height
at 10,000 ft
Aircraft
GLF5
Turbulence
moderate from 10,000 ft to 50
C210 at 9,000 ft, 43 nm southwest, 3:51 pm PDT (22:51 UTC): light rime icing, -13 °C, remarks: base 080-ZSE. 160 nm along the route, 43 nm southwest of the line.
as filed, and in English
```
PDT UA /OV PDT230040/TM 2251/FL090/TP C210/TA M13/IC LGT RIME/RM BASE 080-ZSE
```
Report
a routine report filed through PDT
Where
40 nm southwest (230°) of PDT
Time
22:51 UTC
Height
at 9,000 ft
Aircraft
C210
Temperature
−13 °C
Icing
light rime
Remarks
base 080-ZSE
GL7T at 40,000 ft, 4 nm southeast, 2:35 pm PDT (21:35 UTC): light to moderate turbulence from 37,500 ft to 40,000 ft, remarks: durd-zse. 200 nm along the route, 4 nm southeast of the line.
as filed, and in English
```
PDT UA /OV PDT100030/TM 2135/FL400/TP GL7T/TB OCNL LGT-MOD 400-375/RM DURD-ZSE
```
Report
a routine report filed through PDT
Where
30 nm east (100°) of PDT
Time
21:35 UTC
Height
at 40,000 ft
Aircraft
GL7T
Turbulence
occasional light to moderate from 40,000 ft to 37,500 ft
Remarks
durd-zse

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 14 forecast points nearest it (SEA, YKM, LWS, BOI, PIH, SLC, RKS, GJT, ALS, TCC, AMA, LBB, ABI, SAT). A plus sign is a headwind, a minus sign a tailwind.

Height	Average wind	Head- or tailwind	Temperature	Ground speed	Time en route	Arrival
5,500 ft	190° at 6 kt	+4 kt	13 °C	116 kt	13 h 16 min	8:04 am CDT (13:04 UTC)
7,500 ft	210° at 13 kt	+5 kt	7 °C	115 kt	13 h 22 min	8:10 am CDT (13:10 UTC)
9,500 ft	210° at 15 kt	+4 kt	4 °C	116 kt	13 h 16 min	8:04 am CDT (13:04 UTC)
11,500 ft	210° at 22 kt	+4 kt	1 °C	116 kt	13 h 16 min	8:04 am CDT (13:04 UTC)
13,500 ft	220° at 24 kt	+4 kt	-2 °C	116 kt	13 h 16 min	8:04 am CDT (13:04 UTC)
15,500 ft	220° at 27 kt	+3 kt	-6 °C	117 kt	13 h 09 min	7:57 am CDT (12:57 UTC)
17,500 ft	220° at 30 kt	+3 kt	-10 °C	117 kt	13 h 09 min	7:57 am CDT (12:57 UTC)
18,000 ft FL180	220° at 30 kt	+3 kt	-11 °C	117 kt	13 h 09 min	7:57 am CDT (12:57 UTC)
24,000 ft FL240	220° at 34 kt	+1 kt	-21 °C	119 kt	12 h 55 min	7:43 am CDT (12:43 UTC)
30,000 ft FL300	230° at 43 kt	−3 kt	-31 °C	123 kt	12 h 30 min	7:18 am CDT (12:18 UTC)
34,000 ft FL340	240° at 47 kt	−12 kt	-37 °C	132 kt	11 h 39 min	6:27 am CDT (11:27 UTC)
39,000 ft FL390	240° at 47 kt	−17 kt	-46 °C	137 kt	11 h 14 min	6:02 am CDT (11:02 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
SEA	used from 0 nm out; 25 nm from the line	360/9	350/10 1°	010/10 -5°	030/20 -11°	020/60 -17°	010/86 -26°	360/90 -40°	010/68 -42°	360/31 -43°
YKM	used from 50 nm out; 15 nm from the line	030/16	020/18 0°	030/30 -8°	030/23 -13°	020/40 -23°	010/73 -29°	010/54 -36°	360/29 -37°	330/16 -40°
LWS	used from 150 nm out; 83 nm from the line	010/5	050/14 -2°	040/12 -6°	160/7 -10°	190/30 -22°	200/54 -27°	200/48 -35°	210/40 -37°	230/32 -41°
BOI	used from 250 nm out; 80 nm from the line		330/14 4°	230/5 -2°	220/20 -7°	210/37 -20°	200/59 -26°	200/67 -34°	210/73 -35°	220/62 -41°
PIH	used from 399 nm out; 74 nm from the line		270/10	270/13 1°	210/16 -2°	200/56 -11°	200/51 -23°	200/68 -33°	220/77 -37°	230/73 -44°
SLC	used from 549 nm out; 53 nm from the line		280/8	210/39 5°	210/52 -1°	200/50 -11°	200/56 -23°	220/61 -28°	230/73 -37°	230/73 -45°
RKS	used from 649 nm out; 76 nm from the line			190/43	210/65 3°	210/57 -9°	210/56 -21°	210/47 -33°	230/63 -37°	240/77 -46°
GJT	used from 699 nm out; 59 nm from the line			210/40 11°	210/46 3°	210/61 -10°	210/68 -22°	220/57 -29°	230/59 -36°	240/66 -46°
ALS	used from 849 nm out; 68 nm from the line				210/32 5°	230/48 -8°	230/49 -20°	230/78 -30°	240/74 -36°	240/61 -47°
TCC	used from 1048 nm out; 46 nm from the line		200/26	200/28 14°	220/25 7°	230/28 -7°	240/41 -19°	240/62 -28°	250/61 -37°	250/49 -49°
AMA	used from 1148 nm out; 49 nm from the line		190/28	220/26 14°	230/27 7°	250/24 -6°	250/32 -16°	240/51 -28°	250/52 -38°	250/51 -50°
LBB	used from 1198 nm out; 26 nm from the line		180/26 20°	210/21 13°	230/21 7°	250/25 -5°	250/34 -16°	250/52 -28°	260/47 -38°	260/49 -50°
ABI	used from 1298 nm out; 48 nm from the line		180/26 17°	220/18 12°	230/25 8°	230/28 -5°	240/29 -14°	250/35 -28°	270/37 -39°	280/37 -51°
SAT	used from 1448 nm out; 89 nm from the line	130/22	140/24 18°	170/19 13°	190/13 7°	240/15 -4°	220/14 -13°	270/11 -28°	280/10 -40°	310/18 -51°

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
SEA Seattle, WA	departure	VFR Sky: a few clouds at 2,000 feet, a few clouds at 5,000 feet	from the north-northeast (020°) at 9 knots	10+ mi	none	432 ft	3:53 pm PDT (22:53 UTC)
YKM Yakima, WA	90 nm out, 3 nm southwest of the line, tower	VFR Sky: overcast at 8,000 feet	from the northeast (040°) at 9 knots	10+ mi	8,000 ft	1,098 ft	22:53 UTC
PDT Pendleton, OR	180 nm out, 5 nm southwest of the line, tower	VFR Sky: overcast at 6,000 feet	from the north-northeast (020°) at 8 knots	10+ mi	6,000 ft	1,494 ft	22:53 UTC
SUN Hailey, ID	409 nm out, 10 nm northeast of the line, tower	marginal VFR Sky: overcast at 1,300 feet Weather: light rain	from the southeast (140°) at 4 knots	10+ mi	1,300 ft	5,319 ft	22:55 UTC
EVW Evanston, WY	609 nm out, 1 nm northeast of the line	VFR Sky: a broken layer at 4,500 feet, overcast at 6,000 feet Weather: light rain	from the southwest (220°) at 20 knots, gusting to 34	9 mi	4,500 ft	7,142 ft	23:44 UTC
VEL Vernal, UT	689 nm out, 11 nm east of the line	VFR Sky: a broken layer at 5,500 feet, a broken layer at 7,000 feet, a broken layer at 8,500 feet	from the south-southwest (200°) at 6 knots	10+ mi	5,500 ft	5,274 ft	22:53 UTC
GJT Grand Junction, CO	779 nm out, 17 nm southwest of the line, tower	VFR Sky: a few clouds at 7,000 feet	from the south-southeast (160°) at 14 knots, gusting to 20	10+ mi	none	4,861 ft	22:53 UTC
ALS Alamosa, CO	939 nm out, 4 nm south of the line	VFR Sky: a few clouds at 7,000 feet, scattered clouds at 9,500 feet	from the southwest (230°) at 9 knots	10+ mi	none	7,539 ft	22:52 UTC
PVW Plainview, TX	1218 nm out, 7 nm east of the line	VFR	from the south (180°) at 14 knots	10+ mi	none	3,374 ft	23:35 UTC
ABI Abilene, TX	1368 nm out, 10 nm northeast of the line, tower	VFR	from the south (170°) at 17 knots, gusting to 27	10+ mi	none	1,790 ft	22:52 UTC
GTU Georgetown, TX	1518 nm out, 19 nm northeast of the line, tower	VFR	from the south (170°) at 11 knots, gusting to 20	10+ mi	none	789 ft	22:55 UTC
AUS Austin, TX	destination	VFR Sky: a few clouds at 7,500 feet, a few clouds at 12,000 feet, scattered clouds at 25,000 feet	from the south (170°) at 12 knots	10+ mi	none	541 ft	5:53 pm CDT (22:53 UTC)

The highest airport on this list sits at 7,539 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.

At AUS when you get there the forecast at the estimated arrival, 6:02 am CDT (11:02 UTC)

Wind from the south-southeast at 6 knots, visibility more than 6 miles, scattered clouds at 1,500 feet VFR

The whole forecast for AUS

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

The forecast for SEA, the departure

From Sun 5:00 pm PDT (00:00 UTC): wind from the north at 12 knots, gusting to 20, visibility more than 6 miles, a few clouds at 2,000 feet, a few clouds at 5,000 feet
From Sun 8:00 pm PDT (03:00 UTC): wind from the northeast at 6 knots, visibility more than 6 miles, clear skies
From Mon 3:00 am PDT (10:00 UTC): wind from the southeast at 4 knots, visibility more than 6 miles, patches of fog, clear skies
From Mon 9:00 am PDT (16:00 UTC): wind from the south-southeast at 4 knots, visibility more than 6 miles, clear skies
From Mon 11:00 am PDT (18:00 UTC): wind from the west at 6 knots, visibility more than 6 miles, clear skies
From Mon 8:00 pm PDT (03:00 UTC): wind from the northwest at 5 knots, visibility more than 6 miles, scattered clouds at 25,000 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 2 nm from the route, at the destination end · drones kept away from a public gathering · until 12 October · ZHU

Daylight

Sunset at SEA 6:27 pm PDT (01:27 UTC), at AUS 7:03 pm CDT (00:03 UTC) (civil twilight ends 7:27 pm CDT (00:27 UTC)). At 120 knots the arrival at AUS is before sunrise there (7:30 am CDT (12:30 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

Radar now, the Pacific Northwest · loop National Weather Service

Radar now, the northern Rockies · loop National Weather Service

Radar now, the southern Rockies · loop National Weather Service

Radar, the whole country · loop National Weather Service

Surface analysis now Weather Prediction Center

Forecast chart, 12 hours ahead Weather Prediction Center

Forecast chart, 24 hours ahead Weather Prediction Center

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: Seattle-Tacoma International, Austin-Bergstrom International.