Plan a flight · Sun 7:10 pm PDT (02:10 UTC)

Seattle-Tacoma International to Lovell Field SEA → CHA

1,812 nautical miles (2,085 statute miles) east on a straight line, true course 101°, about 085° magnetic at the departure end (variation 16E). At 120 knots that is 11 h 24 min at the quickest height in today's winds (39,000 ft, a 39-knot tailwind), arriving about 9:34 am EDT (13:34 UTC). Right now SEA is VFR, wind from the north (360°) at 7 knots; CHA is VFR, wind from the west-southwest (240°) at 4 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: 1 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 637 to 786 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 199 to 677 nm out.
AIRMET TANGO 4W: moderate turbulence above 18,000 ft from 18,000 ft to 36,000 ft. Over the route from 269 to 876 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 757 nm out.
AIRMET ZULU 3C: moderate icing up to 22,000 ft. Over the route from 508 to 657 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 677 to 707 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 1105 to 1304 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). Near the route, at the destination end.
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

E75L at 14,000 ft, 26 nm northeast, 4:22 pm PDT (23:22 UTC): moderate turbulence from 14,000 ft to 21,000 ft, remarks: during the climb zlc. 338 nm along the route, 26 nm northeast of the line.
as filed, and in English
```
MSO UA /OV 32S/TM 2322/FL140/TP E75L/TB MOD 140-210/RM DURC /ZLC
```
Report
a routine report filed through MSO
Where
over 32S
Time
23:22 UTC
Height
at 14,000 ft
Aircraft
E75L
Turbulence
moderate from 14,000 ft to 21,000 ft
Remarks
during the climb zlc
A321 at 13,500 ft, 29 nm south, 6:54 pm PDT (01:54 UTC): remarks: zse. At the departure end, 29 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, 32 nm north, 6:52 pm PDT (01:52 UTC): remarks: zse. At the departure end, 32 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, 29 nm south, 5:42 pm PDT (00:42 UTC): remarks: zse. At the departure end, 29 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, 29 nm south, 5:42 pm PDT (00:42 UTC): remarks: zse. At the departure end, 29 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, 18 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, 18 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
BCS1 at 3,700 ft, 48 nm north, 6:47 pm PDT (01:47 UTC): snow, rain, remarks: during the descent ils runway 12. 338 nm along the route, 48 nm north of the line.
as filed, and in English
```
MSO UA /OV MSO/TM 0147/FL037/TP BCS1/SK 037/WX SN RA/RM DURD ILS RY 12
```
Report
a routine report filed through MSO
Where
over MSO
Time
01:47 UTC
Height
at 3,700 ft
Aircraft
BCS1
Sky
at 3,700 ft
Weather
snow, rain
Remarks
during the descent ils runway 12
C25B at 4,100 ft, 48 nm north, 5:36 pm PDT (00:36 UTC): no icing, overcast above 4,100 ft, remarks: during the descent ils runway 12. 338 nm along the route, 48 nm north of the line.
as filed, and in English
```
MSO UA /OV MSO/TM 0036/FL041/TP C25B/SK OVC041/IC NEG/RM DURD ILS RY 12
```
Report
a routine report filed through MSO
Where
over MSO
Time
00:36 UTC
Height
at 4,100 ft
Aircraft
C25B
Sky
overcast from 4,100 ft
Icing
none
Remarks
during the descent ils runway 12
B738 at 24,000 ft, 20 nm northeast, 4:13 pm PDT (23:13 UTC): remarks: snow top flight level at 24,000 ft zlc. 438 nm along the route, 20 nm northeast of the line.
as filed, and in English
```
BZN UA /OV BZN270030/TM 2313/FL240/TP B738/RM SN TOP FL 240 /ZLC
```
Report
a routine report filed through BZN
Where
30 nm west (270°) of BZN
Time
23:13 UTC
Height
at 24,000 ft
Aircraft
B738
Remarks
snow top flight level at 24,000 ft zlc
E75L descending, 20 nm northeast, 6:04 pm PDT (01:04 UTC): remarks: had the airport in sight at 400-500FT above ground. 468 nm along the route, 20 nm northeast 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, 20 nm northeast, 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, 20 nm northeast 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, 10 nm northeast, 5:13 pm PDT (00:13 UTC): light chop turbulence, remarks: ZME25. 1593 nm along the route, 10 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
B38M at 25,000 ft, 41 nm southwest, 5:12 pm PDT (00:12 UTC): light chop turbulence, remarks: ZME26. 1652 nm along the route, 41 nm southwest 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
B738 at 34,000 ft, 16 nm north, 4:41 pm PDT (23:41 UTC): light to moderate chop turbulence, remarks: zme. 1672 nm along the route, 16 nm north of the line.
as filed, and in English
```
CKV UA /OV CKV/TM 2341/FL340/TP B738/TB CONS LGT OCNL MOD CHOP/RM ZME
```
Report
a routine report filed through CKV
Where
over CKV
Time
23:41 UTC
Height
at 34,000 ft
Aircraft
B738
Turbulence
continuous light occasional moderate chop
Remarks
zme

2 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 17 forecast points nearest it (SEA, YKM, GEG, LWS, DLN, BIL, RAP, BFF, ONL, GRI, OMA, MKC, COU, STL, CGI, BNA, HSV). 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 7 kt	−2 kt		122 kt	14 h 51 min	1:01 pm EDT (17:01 UTC)
5,500 ft	200° at 2 kt	+1 kt	13 °C	119 kt	15 h 14 min	1:24 pm EDT (17:24 UTC)
7,500 ft	260° at 3 kt	−1 kt	8 °C	121 kt	14 h 59 min	1:09 pm EDT (17:09 UTC)
9,500 ft	260° at 7 kt	−5 kt	5 °C	125 kt	14 h 30 min	12:40 pm EDT (16:40 UTC)
11,500 ft	250° at 10 kt	−8 kt	2 °C	128 kt	14 h 09 min	12:19 pm EDT (16:19 UTC)
13,500 ft	250° at 12 kt	−10 kt	-2 °C	130 kt	13 h 56 min	12:06 pm EDT (16:06 UTC)
15,500 ft	250° at 14 kt	−11 kt	-6 °C	131 kt	13 h 50 min	12:00 pm EDT (16:00 UTC)
17,500 ft	250° at 15 kt	−12 kt	-10 °C	132 kt	13 h 44 min	11:54 am EDT (15:54 UTC)
18,000 ft FL180	250° at 16 kt	−12 kt	-11 °C	132 kt	13 h 44 min	11:54 am EDT (15:54 UTC)
24,000 ft FL240	250° at 23 kt	−18 kt	-21 °C	138 kt	13 h 08 min	11:18 am EDT (15:18 UTC)
30,000 ft FL300	250° at 29 kt	−23 kt	-35 °C	143 kt	12 h 40 min	10:50 am EDT (14:50 UTC)
34,000 ft FL340	260° at 37 kt	−32 kt	-41 °C	152 kt	11 h 55 min	10:05 am EDT (14:05 UTC)
39,000 ft FL390	270° at 43 kt	−39 kt	-47 °C	159 kt	11 h 24 min	9:34 am EDT (13:34 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; 38 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°
GEG	used from 149 nm out; 53 nm from the line		050/18 -2°	060/19 -8°	L/V -11°	160/11 -24°	190/17 -31°	200/19 -35°	220/14 -37°	250/11 -41°
LWS	used from 199 nm out; 16 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°
DLN	used from 348 nm out; 58 nm from the line			080/10 -3°	180/8 -3°	180/23 -14°	200/58 -22°	200/80 -36°	220/85 -41°	230/81 -45°
BIL	used from 498 nm out; 77 nm from the line		080/24	130/14 -1°	180/33 0°	210/43 -10°	220/58 -21°	200/55 -36°	220/75 -44°	240/83 -48°
RAP	used from 697 nm out; 118 nm from the line		120/15 12°	180/22 11°	220/26 5°	230/35 -9°	240/40 -22°	240/50 -37°	240/51 -41°	240/47 -47°
BFF	used from 896 nm out; 99 nm from the line		120/24	180/31 13°	210/26 7°	230/25 -7°	240/41 -20°	230/52 -36°	250/56 -41°	260/57 -45°
ONL	used from 946 nm out; 86 nm from the line		200/20 17°	230/26 14°	240/21 7°	250/27 -9°	260/32 -19°	240/44 -34°	240/56 -41°	250/62 -51°
GRI	used from 1045 nm out; 37 nm from the line		210/31 19°	240/21 14°	240/17 6°	260/27 -7°	260/34 -18°	240/45 -32°	250/56 -40°	260/62 -51°
OMA	used from 1145 nm out; 48 nm from the line	190/34	230/34 19°	250/25 12°	250/18 6°	250/22 -7°	250/28 -19°	260/34 -32°	260/39 -41°	280/56 -51°
MKC	used from 1244 nm out; 50 nm from the line	200/28	220/30 16°	270/20 11°	280/22 7°	260/27 -6°	270/27 -18°	280/38 -32°	270/38 -40°	280/50 -52°
COU	used from 1344 nm out; 37 nm from the line	210/16	220/19 15°	240/33 10°	250/29 7°	280/21 -6°	280/19 -18°	300/34 -31°	300/40 -42°	300/60 -52°
STL	used from 1443 nm out; 47 nm from the line	210/13	260/16 17°	270/21 10°	280/24 5°	310/20 -7°	320/22 -18°	320/44 -33°	320/59 -43°	310/69 -51°
CGI	used from 1493 nm out; 46 nm from the line	250/10	290/12 17°	290/18 11°	300/22 5°	320/25 -8°	330/30 -18°	320/53 -33°	320/66 -42°	320/56 -50°
BNA	used from 1643 nm out; 49 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°
HSV	used from 1792 nm out; 75 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°

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	119 nm out, 11 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, 16 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
BZN Bozeman, MT	468 nm out, 20 nm northeast of the line, tower	IFR Sky: a few clouds at 600 feet, overcast at 1,500 feet Weather: light snow, mist	calm	1.25 mi	1,500 ft	4,473 ft	02:03 UTC
POY Powell, WY	577 nm out, 5 nm east of the line	low IFR Sky: overcast at 300 feet Weather: unknown precipitation	from the northwest (310°) at 19 knots	2.5 mi	300 ft	5,096 ft	01:50 UTC
GRN Gordon, NE	896 nm out, 2 nm west of the line	VFR	from the east-northeast (060°) at 11 knots	10+ mi	none	3,562 ft	01:55 UTC
ODX Ord, NE	1055 nm out, 2 nm southwest of the line	VFR	from the north-northeast (030°) at 6 knots	10+ mi	none	2,070 ft	01:53 UTC
LNK Lincoln, NE	1165 nm out, 3 nm north of the line, tower	VFR	from the south (170°) at 9 knots	10+ mi	none	1,218 ft	01:54 UTC
COU Columbia, MO	1404 nm out, 3 nm east of the line, tower	VFR	from the south (190°) at 5 knots	10+ mi	none	889 ft	01:54 UTC
PAH Paducah, KY	1603 nm out, 3 nm northwest of the line, tower	VFR	calm	10+ mi	none	410 ft	00:00 UTC
JWN Nashville, TN	1702 nm out, 9 nm northeast of the line, tower	VFR	calm	8 mi	none	501 ft	01:55 UTC
CHA Chattanooga, TN	destination	VFR Sky: scattered clouds at 2,300 feet, scattered clouds at 2,900 feet	from the west-southwest (240°) at 4 knots	10+ mi	none	682 ft	9:53 pm EDT (01:53 UTC)

The highest airport on this list sits at 5,096 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.

At CHA when you get there the forecast at the estimated arrival, 9:34 am EDT (13:34 UTC)

Wind light and variable, visibility more than 6 miles, a few clouds at 25,000 feet VFR

The whole forecast for CHA

From Sun 8:00 pm EDT (00:00 UTC): wind light and variable, visibility more than 6 miles, a few clouds at 7,000 feet
From Sun 11:00 pm EDT (03:00 UTC): wind light and variable, visibility more than 6 miles, a few clouds at 25,000 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

6/7634 CENTRALIA, MO, Monday, October 12, 2026 UTC 20 nm from the route, 1404 nm along the route · a hazard on the ground (fire-fighting, a chemical spill, rescue work) · today · ZKC
6/0708 Goodlettsville, TN, Saturday, August 1, 2026 through Sunday, August 1, 2027 UTC 22 nm from the route, 1702 nm along the route · security · until 1 August · ZME

Daylight

Sunset at SEA 6:27 pm PDT (01:27 UTC), at CHA 7:10 pm EDT (23:10 UTC) (civil twilight ends 7:35 pm EDT (23:35 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, Lovell Field.