Plan a flight · Mon 5:07 am PDT (12:07 UTC)

Seattle-Tacoma International to Gerald R Ford International SEA → GRR

1,566 nautical miles (1,802 statute miles) east on a straight line, true course 086°, about 070° magnetic at the departure end (variation 16E). At 120 knots that is 9 h 36 min at the quickest height in today's winds (39,000 ft, a 43-knot tailwind), arriving about 5:43 pm EDT (21:43 UTC). Right now SEA is VFR, wind calm; GRR is VFR, wind from the south (180°) 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: 3 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 C18C: thunderstorms (a convective SIGMET) up to 36,000 ft, moving from the southwest at 40 knots, until 6:55 am PDT (13:55 UTC). Over the route from 878 to 948 nm out.
as issued
```
WSUS32 KKCI 121155
MKCC WST 121155
CONVECTIVE SIGMET 18C
VALID UNTIL 1355Z
SD ND
FROM 50NE BIS-70W FAR-40N PIR-40N DPR-50NE BIS
AREA TS MOV FROM 22040KT. TOPS TO FL360.
```
AIRMET TANGO 1W: moderate turbulence above 18,000 ft from 18,000 ft to 39,000 ft. Over the route from 30 to 379 nm out.
AIRMET ZULU 2C: moderate icing up to 18,000 ft. Over the route from 190 to 648 nm out.
AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 229 to 539 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 369 to 1127 nm out.
AIRMET ZULU 2C: moderate icing up to 23,000 ft. Over the route from 658 to 748 nm out.

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

E170 at 15,000 ft, 19 nm north, 4:56 am PDT (11:56 UTC): moderate chop turbulence. 1367 nm along the route, 19 nm north of the line.
as filed, and in English
```
Y50 UA /OV Y50330025/TM 1156/FL150/TP E170/TB MOD CHOP
```
Report
a routine report filed through Y50
Where
25 nm northwest (330°) of Y50
Time
11:56 UTC
Height
at 15,000 ft
Aircraft
E170
Turbulence
moderate chop
C340 at 24,000 ft, 10 nm south, 3:59 am PDT (10:59 UTC): light to moderate icing, -22 °C. 748 nm along the route, 10 nm south of the line.
as filed, and in English
```
DIK UA /OV DIK240054/TM 1059/FL240/TP C340/TA M22/IC LGT-MOD CLR /ZLC
```
Report
a routine report filed through DIK
Where
54 nm southwest (240°) of DIK
Time
10:59 UTC
Height
at 24,000 ft
Aircraft
C340
Temperature
−22 °C
Icing
light to moderate clear zlc
C441 at 5,000 ft, 31 nm south, 4:52 am PDT (11:52 UTC): no turbulence, no icing, remarks: during the climb. 998 nm along the route, 31 nm south of the line.
as filed, and in English
```
ABR UA /OV ABR/TM 1152/FL050/TP C441/SK BASEUNKN-TOP032/TB NEG/IC NEG/RM DURC
```
Report
a routine report filed through ABR
Where
over ABR
Time
11:52 UTC
Height
at 5,000 ft
Aircraft
C441
Sky
BASEUNKN-TOP032
Turbulence
none
Icing
none
Remarks
during the climb
B739 at 34,000 ft, 32 nm south, 3:58 am PDT (10:58 UTC): no turbulence. 1446 nm along the route, 32 nm south of the line.
as filed, and in English
```
UES UA /OV BAE/TM 1058/FL340/TP B739/TB NEG
```
Report
a routine report filed through UES
Where
over BAE
Time
10:58 UTC
Height
at 34,000 ft
Aircraft
B739
Turbulence
none

Winds aloft along the route, and the time en route the forecast for use 08:00–15:00 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, GEG, GPI, GTF, BIL, MLS, DIK, ABR, AXN, MSP, LSE, GRB, MKG). 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	250° at 7 kt	−5 kt	-1 °C	125 kt	12 h 32 min	8:39 pm EDT (00:39 UTC)
7,500 ft	240° at 10 kt	−7 kt	6 °C	127 kt	12 h 20 min	8:27 pm EDT (00:27 UTC)
9,500 ft	240° at 12 kt	−8 kt	2 °C	128 kt	12 h 14 min	8:21 pm EDT (00:21 UTC)
11,500 ft	240° at 14 kt	−10 kt	0 °C	130 kt	12 h 03 min	8:10 pm EDT (00:10 UTC)
13,500 ft	240° at 15 kt	−11 kt	-4 °C	131 kt	11 h 57 min	8:04 pm EDT (00:04 UTC)
15,500 ft	250° at 16 kt	−12 kt	-8 °C	132 kt	11 h 52 min	7:59 pm EDT (23:59 UTC)
17,500 ft	250° at 17 kt	−13 kt	-12 °C	133 kt	11 h 46 min	7:53 pm EDT (23:53 UTC)
18,000 ft FL180	250° at 17 kt	−14 kt	-13 °C	134 kt	11 h 41 min	7:48 pm EDT (23:48 UTC)
24,000 ft FL240	250° at 23 kt	−19 kt	-25 °C	139 kt	11 h 16 min	7:23 pm EDT (23:23 UTC)
30,000 ft FL300	250° at 27 kt	−21 kt	-36 °C	141 kt	11 h 06 min	7:13 pm EDT (23:13 UTC)
34,000 ft FL340	250° at 37 kt	−31 kt	-40 °C	151 kt	10 h 22 min	6:29 pm EDT (22:29 UTC)
39,000 ft FL390	250° at 47 kt	−43 kt	-46 °C	163 kt	9 h 36 min	5:43 pm EDT (21:43 UTC)

Based on data from the 12th at 06:00 UTC; valid on the 12th at 12:00 UTC for use 08:00 to 15:00 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	350/5	010/6 0°	010/9 -4°	010/27 -6°	010/51 -15°	360/58 -26°	360/60 -41°	350/55 -48°	340/30 -45°
YKM	used from 50 nm out; 57 nm from the line	360/6	360/11 -1°	030/20 -7°	040/21 -11°	020/55 -18°	010/84 -26°	010/79 -40°	010/45 -42°	350/23 -42°
GEG	used from 100 nm out; 69 nm from the line		060/7 -2°	070/12 -6°	050/8 -8°	120/11 -21°	110/18 -33°	030/22 -37°	040/6 -38°	240/7 -41°
GPI	used from 249 nm out; 70 nm from the line		090/8 -4°	140/7 -7°	090/10 -8°	110/10 -19°	210/25 -30°	200/24 -40°	210/31 -39°	210/35 -42°
GTF	used from 399 nm out; 20 nm from the line		L/V	L/V -7°	240/8 -8°	240/30 -14°	240/40 -28°	210/52 -38°	210/76 -38°	220/72 -43°
BIL	used from 549 nm out; 84 nm from the line		300/14	270/19 -2°	260/26 -2°	220/28 -13°	210/51 -25°	220/56 -33°	220/61 -39°	220/72 -45°
MLS	used from 599 nm out; 60 nm from the line		290/17 -1°	250/18 0°	230/25 0°	220/31 -11°	220/32 -24°	220/50 -32°	220/60 -38°	230/71 -46°
DIK	used from 748 nm out; 25 nm from the line		190/12 5°	230/29 7°	220/33 1°	220/43 -11°	210/47 -23°	220/53 -33°	240/56 -40°	250/72 -47°
ABR	used from 898 nm out; 75 nm from the line	080/12	210/12 17°	220/22 12°	230/26 5°	220/28 -10°	230/41 -21°	250/36 -36°	260/47 -39°	260/63 -47°
AXN	used from 1047 nm out; 44 nm from the line	110/6	260/10 16°	240/17 12°	250/20 5°	260/29 -10°	260/35 -22°	260/29 -38°	270/48 -41°	270/61 -48°
MSP	used from 1147 nm out; 40 nm from the line	250/12	250/17 17°	240/26 12°	250/26 5°	280/26 -9°	280/32 -22°	270/37 -38°	280/47 -41°	280/55 -48°
LSE	used from 1247 nm out; 52 nm from the line	250/25	240/21 17°	240/28 11°	250/28 5°	280/24 -10°	280/31 -21°	260/35 -37°	270/45 -43°	280/59 -47°
GRB	used from 1397 nm out; 47 nm from the line	250/32	250/22 17°	240/18 8°	280/21 6°	280/34 -11°	280/35 -21°	280/39 -37°	270/52 -45°	290/60 -49°
MKG	used from 1446 nm out; 59 nm from the line	260/28	260/18 15°	250/16 9°	260/22 4°	280/31 -9°	270/35 -21°	270/44 -35°	270/42 -45°	290/61 -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	calm	10+ mi	none	432 ft	4:53 am PDT (11:53 UTC)
MWH Moses Lake, WA	120 nm out, 20 nm south of the line, tower	VFR	from the north-northwest (330°) at 5 knots	10+ mi	none	1,188 ft	11:52 UTC
GEG Spokane, WA	190 nm out, 6 nm northeast of the line, tower	VFR Sky: scattered clouds at 4,800 feet, a broken layer at 7,000 feet, overcast at 10,000 feet	from the northeast (050°) at 5 knots	10+ mi	7,000 ft	2,385 ft	11:53 UTC
GTF Great Falls, MT	439 nm out, 7 nm northeast of the line, tower	low IFR Sky: overcast at 400 feet Weather: mist	from the north-northwest (330°) at 6 knots	0.5 mi	400 ft	3,680 ft	11:53 UTC
LWT Lewistown, MT	519 nm out, 15 nm south of the line	no report just now				4,170 ft
GDV Glendive, MT	708 nm out, 17 nm north of the line	low IFR Sky: overcast at 400 feet Weather: light rain, mist	from the north-northeast (030°) at 9 knots	4 mi	400 ft	2,458 ft	11:56 UTC
DIK Dickinson, ND	798 nm out, 11 nm north of the line	IFR Sky: overcast at 500 feet Weather: mist	from the northeast (050°) at 8 knots	1.75 mi	500 ft	2,592 ft	11:56 UTC
MOX Morris, MN	1087 nm out, 4 nm northeast of the line	IFR Sky: overcast at 900 feet	from the northeast (040°) at 7 knots	10+ mi	900 ft	1,135 ft	11:50 UTC
STP St Paul, MN	1217 nm out, 2 nm northeast of the line, tower	VFR	from the south (170°) at 4 knots	10+ mi	none	705 ft	11:53 UTC
EAU Eau Claire, WI	1287 nm out, 20 nm north of the line, tower	VFR	from the south (180°) at 4 knots	10+ mi	none	913 ft	11:56 UTC
MKG Muskegon, MI	1526 nm out, 6 nm east of the line, tower	VFR Sky: a broken layer at 25,000 feet	from the south (190°) at 10 knots	10+ mi	25,000 ft	628 ft	11:55 UTC
GRR Grand Rapids, MI	destination	VFR Sky: a broken layer at 23,000 feet	from the south (180°) at 4 knots	10+ mi	23,000 ft	793 ft	7:53 am EDT (11:53 UTC)

The highest airport on this list sits at 4,170 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.

At GRR when you get there the forecast at the estimated arrival, 5:43 pm EDT (21:43 UTC)

Wind from the southwest at 12 knots, gusting to 20, visibility more than 6 miles, a broken layer at 20,000 feet VFR

The whole forecast for GRR

From Mon 8:00 am EDT (12:00 UTC): wind from the south at 4 knots, visibility more than 6 miles, scattered clouds at 25,000 feet
From Mon 1:00 pm EDT (17:00 UTC): wind from the southwest at 12 knots, gusting to 20, visibility more than 6 miles, a broken layer at 20,000 feet
From Mon 6:00 pm EDT (22:00 UTC): wind from the south-southwest at 10 knots, visibility more than 6 miles, scattered clouds at 8,000 feet
From Mon 11:00 pm EDT (03:00 UTC): wind from the south at 8 knots, visibility 4 miles, light rain showers, mist, scattered clouds at 5,000 feet, overcast at 8,000 feet
30% chance between Mon 11:00 pm EDT (03:00 UTC) and 3:00 am EDT (07:00 UTC): visibility 2 miles, light thunderstorms with rain, mist, overcast at 3,500 feet (thunderheads)
From Tue 3:00 am EDT (07:00 UTC): wind from the south-southwest at 8 knots, visibility more than 6 miles, scattered clouds at 8,000 feet

The forecast for SEA, the departure

From Mon 5:00 am PDT (12:00 UTC): wind from the southeast at 5 knots, visibility more than 6 miles, clear skies
From Mon 9:00 am PDT (16:00 UTC): wind light and variable, 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 south at 4 knots, visibility more than 6 miles, scattered clouds at 25,000 feet
From Tue 4:00 am PDT (11:00 UTC): wind from the south at 5 knots, visibility more than 6 miles, overcast at 10,000 feet

Temporary flight restrictions on the line or within 25 nm of it

6/8923 Kalispell, MT, Wednesday, October 14, 2026 through Wednesday, October 14, 2026 Local 15 nm from the route, 319 nm along the route · a VIP movement · starts Wednesday 14 October · ZLC
6/8927 Kalispell, MT, Wednesday, October 14, 2026 through Wednesday, October 14, 2026 Local 6 nm from the route, 339 nm along the route · a VIP movement · starts Wednesday 14 October · ZSE
6/6656 ANOKA, MN, Monday, October 5, 2026 through Monday, October 19, 2026 Local 13 nm from the route, 1197 nm along the route · security · until 19 October · ZMP

Daylight

Sunset at SEA 6:25 pm PDT (01:25 UTC), at GRR 7:04 pm EDT (23:04 UTC) (civil twilight ends 7:33 pm EDT (23:33 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, Gerald R Ford International.