Plan a flight · Sun 7:42 pm PDT (02:42 UTC)

Seattle-Tacoma International to Hartsfield/Jackson Atlanta International SEA → ATL

1,893 nautical miles (2,178 statute miles) east on a straight line, true course 102°, about 086° magnetic at the departure end (variation 16E). At 120 knots that is 12 h 13 min at the quickest height in today's winds (39,000 ft, a 35-knot tailwind), arriving about 10:55 am EDT (14:55 UTC). Right now SEA is VFR, wind from the north (360°) at 7 knots; ATL is VFR, wind from the northwest (310°) at 9 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: 6,655 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 8W: thunderstorms (a convective SIGMET) up to 35,000 ft, moving from the southwest at 40 knots, until 8:55 pm PDT (03:55 UTC). Over the route from 638 to 797 nm out.

as issued

WSUS33 KKCI 120155
MKCW WST 120155
CONVECTIVE SIGMET 8W
VALID UNTIL 0355Z
CO MT WY
FROM 40N SHR-60WNW RAP-20ENE CYS-30SW CYS-10NW BOY-40N SHR
AREA TS MOV FROM 22040KT. TOPS TO FL350.

AIRMET TANGO 1W: moderate turbulence above 18,000 ft from 18,000 ft to 39,000 ft. Over the first 139 nm of the route.
AIRMET ZULU 2C: moderate icing up to 16,000 ft. Over the route from 100 to 428 nm out.
AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 189 to 687 nm out.
AIRMET TANGO 4W: moderate turbulence above 18,000 ft from 18,000 ft to 36,000 ft. Over the route from 279 to 887 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 309 to 697 nm out.
AIRMET TANGO 4W: moderate turbulence below 18,000 ft up to 18,000 ft. Over the route from 488 to 777 nm out.
AIRMET ZULU 3C: moderate icing up to 22,000 ft. Over the route from 498 to 667 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 638 to 717 nm out.
AIRMET TANGO 3W: 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 1096 to 1315 nm out.
AIRMET SIERRA 4E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Near the route, at the destination end.

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

B738 at 33,000 ft, 49 nm south, 4:57 pm PDT (23:57 UTC): moderate chop turbulence from 31,000 ft to 33,000 ft. 468 nm along the route, 49 nm south of the line.
as filed, and in English
```
IDA UA /OV DBS015030/TM 2357/FL330/TP B738/TB MOD CHOP 310-330 /ZLC
```
Report
a routine report filed through IDA
Where
30 nm north (015°) of DBS
Time
23:57 UTC
Height
at 33,000 ft
Aircraft
B738
Turbulence
moderate chop from 31,000 ft to 33,000 ft zlc
S22T at 15,000 ft, 46 nm southwest, 6:47 pm PDT (01:47 UTC): moderate rime icing above 15,000 ft, -5 °C. 548 nm along the route, 46 nm southwest of the line.
as filed, and in English
```
JAC UA /OV DNW010020/TM 0147/FL150/TP S22T/TA M05/IC MOD RIME 150 /ZLC
```
Report
a routine report filed through JAC
Where
20 nm north (010°) of DNW
Time
01:47 UTC
Height
at 15,000 ft
Aircraft
S22T
Temperature
−5 °C
Icing
moderate rime at 15,000 ft zlc
CRJ9 at 32,000 ft, 33 nm southwest, 7:00 pm PDT (02:00 UTC): moderate chop turbulence, remarks: ZTLFD-22. At the destination end, 33 nm southwest of the line.
as filed, and in English
```
ATL UA /OV ATL240035/TM 0200/FL320/TP CRJ9/TB OCNL MOD CHOP /RM ZTLFD-22
```
Report
a routine report filed through ATL
Where
35 nm southwest (240°) of ATL
Time
02:00 UTC
Height
at 32,000 ft
Aircraft
CRJ9
Turbulence
occasional moderate chop
Remarks
ZTLFD-22
A321 at 13,500 ft, 28 nm south, 6:54 pm PDT (01:54 UTC): remarks: zse. At the departure end, 28 nm south of the line.
as filed, and in English
```
SEA UA /OV SEA120045/TM 0154/FL135/TP A321/SK TOP130/RM ZSE
```
Report
a routine report filed through SEA
Where
45 nm southeast (120°) of SEA
Time
01:54 UTC
Height
at 13,500 ft
Aircraft
A321
Sky
TOP130
Remarks
zse
SB20 at 16,000 ft, 33 nm north, 6:52 pm PDT (01:52 UTC): remarks: zse. At the departure end, 33 nm north of the line.
as filed, and in English
```
PAE UA /OV PAE075045/TM 0152/FL160/TP SB20/SK TOP120/RM ZSE
```
Report
a routine report filed through PAE
Where
45 nm east (075°) of PAE
Time
01:52 UTC
Height
at 16,000 ft
Aircraft
SB20
Sky
TOP120
Remarks
zse
PC12 at 15,000 ft, 28 nm south, 5:42 pm PDT (00:42 UTC): remarks: zse. At the departure end, 28 nm south of the line.
as filed, and in English
```
YKM UA /OV YKM270050/TM 0042/FL150/TP PC12/SK TOP130/RM -ZSE
```
Report
a routine report filed through YKM
Where
50 nm west (270°) of YKM
Time
00:42 UTC
Height
at 15,000 ft
Aircraft
PC12
Sky
TOP130
Remarks
zse
PC12 at 13,000 ft, 28 nm south, 5:42 pm PDT (00:42 UTC): remarks: zse. At the departure end, 28 nm south of the line.
as filed, and in English
```
YKM UA /OV YKM270050/TM 0042/FL130/TP PC12/SK TOP130/RM -ZSE
```
Report
a routine report filed through YKM
Where
50 nm west (270°) of YKM
Time
00:42 UTC
Height
at 13,000 ft
Aircraft
PC12
Sky
TOP130
Remarks
zse
PC12 at 13,500 ft, 15 nm south, 6:08 pm PDT (01:08 UTC): no turbulence, a trace of icing, overcast from 9,000 ft to 13,500 ft, -10 °C. 139 nm along the route, 15 nm south of the line.
as filed, and in English
```
PSC UA /OV PSC360025/TM 0108/FL135/TP PC12/SK OVC090-TOP135/TA M10/TB NEG /IC TRACE RM 135-090
```
Report
a routine report filed through PSC
Where
25 nm north (360°) of PSC
Time
01:08 UTC
Height
at 13,500 ft
Aircraft
PC12
Sky
overcast from 9,000 ft, tops 13,500 ft
Temperature
−10 °C
Turbulence
none
Icing
trace remarks from 13,500 ft to 9,000 ft
E75L descending, 32 nm north, 6:04 pm PDT (01:04 UTC): remarks: had the airport in sight at 400-500FT above ground. 468 nm along the route, 32 nm north of the line.
as filed, and in English
```
BZN UA /OV BZN/TM 0104/FLDURD/TP E75L/RM HAD THE AIRPORT IN SIGHT AT 400-500FT AGL
```
Report
a routine report filed through BZN
Where
over BZN
Time
01:04 UTC
Height
during the descent
Aircraft
E75L
Remarks
had the airport in sight at 400-500FT above ground
B737 descending, 32 nm north, 5:28 pm PDT (00:28 UTC): scattered clouds above 8,000 ft, fog, snow, remarks: broke out about 100FT above mins. 468 nm along the route, 32 nm north of the line.
as filed, and in English
```
BZN UA /OV BZN/TM 0028/FLDURD/TP B737/SK SCT080/WX 1/2SM SN FG/RM BROKE OUT ABOUT 100FT ABOVE MINS
```
Report
a routine report filed through BZN
Where
over BZN
Time
00:28 UTC
Height
during the descent
Aircraft
B737
Sky
scattered clouds from 8,000 ft
Weather
1/2SM, snow, fog
Remarks
broke out about 100FT above mins
B737 at 31,000 ft, 49 nm northeast, 5:13 pm PDT (00:13 UTC): light chop turbulence, remarks: ZME25. 1594 nm along the route, 49 nm northeast of the line.
as filed, and in English
```
PAH UA /OV CNG360015/TM 0013/FL310/TP B737/TB OCNL LGT CHOP/RM ZME25
```
Report
a routine report filed through PAH
Where
15 nm north (360°) of CNG
Time
00:13 UTC
Height
at 31,000 ft
Aircraft
B737
Turbulence
occasional light chop
Remarks
ZME25
BCS3 at 35,000 ft, 26 nm southwest, 5:13 pm PDT (00:13 UTC): no turbulence, remarks: ZME33. 1614 nm along the route, 26 nm southwest of the line.
as filed, and in English
```
DYR UA /OV DYR/TM 0013/FL350/TP BCS3/TB NEG/RM ZME33
```
Report
a routine report filed through DYR
Where
over DYR
Time
00:13 UTC
Height
at 35,000 ft
Aircraft
BCS3
Turbulence
none
Remarks
ZME33
B38M at 25,000 ft, 4 nm northwest, 5:12 pm PDT (00:12 UTC): light chop turbulence, remarks: ZME26. 1654 nm along the route, 4 nm northwest of the line.
as filed, and in English
```
MKL UA /OV MKL045035/TM 0012/FL250/TP B38M/TB OCNL LGT CHOP/RM ZME26
```
Report
a routine report filed through MKL
Where
35 nm northeast (045°) of MKL
Time
00:12 UTC
Height
at 25,000 ft
Aircraft
B38M
Turbulence
occasional light chop
Remarks
ZME26
E170 at 33,000 ft, 24 nm southwest, 6:53 pm PDT (01:53 UTC): light chop turbulence, remarks: ZTLFD-22. At the destination end, 24 nm southwest of the line.
as filed, and in English
```
ATL UA /OV ATL280045/TM 0153/FL330/TP E170/TB CONS LGT CHOP /RM ZTLFD-22
```
Report
a routine report filed through ATL
Where
45 nm west (280°) of ATL
Time
01:53 UTC
Height
at 33,000 ft
Aircraft
E170
Turbulence
continuous light chop
Remarks
ZTLFD-22

Winds aloft along the route, and the time en route the forecast for use 02:00–09:00 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 16 forecast points nearest it (SEA, YKM, LWS, DLN, BIL, LND, RAP, BFF, ONL, GRI, MKC, COU, CGI, BNA, HSV, ATL). 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	250° at 11 kt	−6 kt		126 kt	15 h 01 min	1:43 pm EDT (17:43 UTC)
5,500 ft	230° at 10 kt	−3 kt	18 °C	123 kt	15 h 23 min	2:05 pm EDT (18:05 UTC)
7,500 ft	240° at 8 kt	−5 kt	8 °C	125 kt	15 h 09 min	1:51 pm EDT (17:51 UTC)
9,500 ft	260° at 9 kt	−7 kt	5 °C	127 kt	14 h 54 min	1:36 pm EDT (17:36 UTC)
11,500 ft	250° at 11 kt	−7 kt	3 °C	127 kt	14 h 54 min	1:36 pm EDT (17:36 UTC)
13,500 ft	240° at 12 kt	−8 kt	-1 °C	128 kt	14 h 47 min	1:29 pm EDT (17:29 UTC)
15,500 ft	240° at 14 kt	−9 kt	-5 °C	129 kt	14 h 40 min	1:22 pm EDT (17:22 UTC)
17,500 ft	250° at 17 kt	−11 kt	-10 °C	131 kt	14 h 27 min	1:09 pm EDT (17:09 UTC)
18,000 ft FL180	250° at 17 kt	−11 kt	-11 °C	131 kt	14 h 27 min	1:09 pm EDT (17:09 UTC)
24,000 ft FL240	240° at 20 kt	−12 kt	-22 °C	132 kt	14 h 20 min	1:02 pm EDT (17:02 UTC)
30,000 ft FL300	260° at 29 kt	−23 kt	-34 °C	143 kt	13 h 14 min	11:56 am EDT (15:56 UTC)
34,000 ft FL340	260° at 38 kt	−33 kt	-39 °C	153 kt	12 h 22 min	11:04 am EDT (15:04 UTC)
39,000 ft FL390	260° at 40 kt	−35 kt	-46 °C	155 kt	12 h 13 min	10:55 am EDT (14:55 UTC)

Based on data from the 12th at 00:00 UTC; valid on the 12th at 06:00 UTC for use 02:00 to 09:00 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	050/7	050/11 1°	050/12 -5°	030/31 -7°	010/61 -15°	010/69 -26°	360/73 -40°	360/62 -47°	330/21 -43°
YKM	used from 50 nm out; 36 nm from the line	070/10	040/15 -1°	020/27 -8°	030/25 -13°	020/48 -20°	010/83 -27°	010/77 -37°	010/49 -40°	350/14 -41°
LWS	used from 149 nm out; 53 nm from the line	070/10	080/12 -2°	030/12 -6°	080/7 -10°	170/34 -21°	160/46 -32°	200/33 -35°	220/22 -35°	230/18 -38°
DLN	used from 349 nm out; 54 nm from the line			090/6 -6°	240/22 -4°	210/34 -16°	210/62 -25°	210/66 -34°	210/82 -36°	220/77 -42°
BIL	used from 498 nm out; 87 nm from the line		080/13	180/9 -2°	210/38 0°	220/51 -11°	210/46 -22°	210/58 -35°	230/73 -39°	230/72 -45°
LND	used from 647 nm out; 105 nm from the line			200/23 6°	220/31 1°	220/39 -11°	230/39 -23°	220/51 -28°	220/66 -37°	230/68 -45°
RAP	used from 697 nm out; 126 nm from the line		180/23 12°	200/38 13°	210/38 6°	220/28 -10°	230/34 -21°	230/37 -36°	250/52 -38°	250/59 -46°
BFF	used from 797 nm out; 70 nm from the line		180/28	220/33 15°	210/31 7°	230/32 -9°	220/41 -21°	220/40 -33°	240/47 -36°	250/54 -46°
ONL	used from 946 nm out; 101 nm from the line		210/31 20°	230/27 13°	230/18 7°	220/19 -8°	240/26 -20°	250/44 -35°	270/52 -39°	260/57 -47°
GRI	used from 1046 nm out; 28 nm from the line		230/35 21°	230/23 13°	220/20 7°	240/25 -8°	240/37 -20°	250/49 -33°	260/57 -38°	260/58 -47°
MKC	used from 1195 nm out; 82 nm from the line	220/44	250/28 18°	250/18 13°	240/12 6°	280/24 -6°	240/34 -18°	260/47 -30°	260/51 -40°	270/58 -50°
COU	used from 1345 nm out; 51 nm from the line	230/31	230/30 15°	260/16 11°	270/14 6°	260/24 -6°	270/27 -18°	270/37 -32°	280/49 -41°	290/56 -51°
CGI	used from 1494 nm out; 51 nm from the line	240/20	270/15 15°	280/15 11°	300/13 6°	290/20 -6°	280/24 -18°	300/34 -32°	300/47 -41°	310/49 -51°
BNA	used from 1644 nm out; 70 nm from the line	310/20	340/20 17°	330/24 10°	340/22 5°	330/26 -6°	340/29 -18°	330/52 -33°	320/62 -41°	340/45 -50°
HSV	used from 1693 nm out; 50 nm from the line	310/20	330/20 16°	320/27 11°	340/23 5°	320/23 -7°	340/30 -17°	320/50 -33°	330/61 -41°	340/41 -50°
ATL	used from 1843 nm out; 25 nm from the line	320/30	330/37 16°	340/44 11°	330/35 7°	310/33 -6°	300/38 -18°	330/58 -33°	330/48 -40°	320/34 -49°

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 3,000 feet	from the north (360°) at 7 knots	10+ mi	none	432 ft	6:53 pm PDT (01:53 UTC)
MWH Moses Lake, WA	120 nm out, 14 nm northeast of the line, tower	VFR Sky: a broken layer at 9,000 feet, overcast at 11,000 feet	from the east (080°) at 4 knots	10+ mi	9,000 ft	1,188 ft	01:52 UTC
LWS Lewiston, ID	229 nm out, 10 nm southwest of the line, tower	VFR Sky: overcast at 6,000 feet	from the west-northwest (300°) at 8 knots	10+ mi	6,000 ft	1,442 ft	01:56 UTC
RVF Twin Bridges, MT	428 nm out, 2 nm northeast of the line	IFR Sky: scattered clouds at 500 feet, a broken layer at 2,300 feet, overcast at 3,300 feet Weather: mist	from the north-northeast (030°) at 23 knots	1 mi	2,300 ft	4,788 ft	02:35 UTC
COD Cody, WY	578 nm out, 7 nm south of the line	IFR Sky: overcast at 800 feet Weather: unknown precipitation	from the north (010°) at 11 knots	9 mi	800 ft	5,102 ft	01:56 UTC
CDR Chadron, NE	857 nm out, 5 nm northeast of the line	VFR	from the north-northeast (020°) at 9 knots	10+ mi	none	3,297 ft	01:53 UTC
GRI Grand Island, NE	1096 nm out, 4 nm east of the line, tower	VFR	from the south (170°) at 11 knots	10+ mi	none	1,847 ft	01:53 UTC
MCI Kansas City, MO	1295 nm out, 4 nm northwest of the line, tower	VFR	from the south (170°) at 9 knots	10+ mi	none	1,027 ft	01:53 UTC
TBN Fort Leonard Wood, MO	1444 nm out, 15 nm southwest of the line, tower	VFR	from the south (180°) at 7 knots	10+ mi	none	1,159 ft	01:55 UTC
UCY Union City, TN	1614 nm out, 1 nm east of the line	VFR	calm	10+ mi	none	345 ft	02:15 UTC
RYY Atlanta, GA	1873 nm out, 13 nm northeast of the line, tower	VFR	from the west (270°) at 5 knots	10+ mi	none	1,040 ft	01:50 UTC
ATL Atlanta, GA	destination	VFR	from the northwest (310°) at 9 knots	10+ mi	none	1,026 ft	9:52 pm EDT (01:52 UTC)

The highest airport on this list sits at 5,102 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.

At ATL when you get there the forecast at the estimated arrival, 10:55 am EDT (14:55 UTC)

Wind from the west-northwest at 6 knots, visibility more than 6 miles, a few clouds at 25,000 feet VFR

The whole forecast for ATL

From Sun 10:00 pm EDT (02:00 UTC): wind from the west-northwest at 7 knots, visibility more than 6 miles, a few clouds at 4,000 feet
From Sun 11:00 pm EDT (03:00 UTC): wind from the west-northwest at 6 knots, visibility more than 6 miles, a few clouds at 25,000 feet
From Mon 12:00 pm EDT (16:00 UTC): wind from the northwest at 10 knots, gusting to 20, visibility more than 6 miles, clear skies
From Mon 5:00 pm EDT (21:00 UTC): wind from the northwest at 7 knots, visibility more than 6 miles, clear skies

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

No temporary flight restriction on or near this route right now.

Daylight

Sunset at SEA 6:27 pm PDT (01:27 UTC), at ATL 7:07 pm EDT (23:07 UTC) (civil twilight ends 7:32 pm EDT (23:32 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 upper Mississippi valley · 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, Hartsfield/Jackson Atlanta International.