Plan a flight · Sun 7:54 pm MDT (01:54 UTC)

Montrose Regional to Seattle-Tacoma International MTJ → SEA

828 nautical miles (953 statute miles) northwest on a straight line, true course 315°, about 303° magnetic at the departure end (variation 12E). At 120 knots that is 6 h 25 min at the quickest height in today's winds (18,000 ft, a 9-knot tailwind), arriving about 1:19 am PDT (08:19 UTC), after sunset at the destination. Right now MTJ is VFR, wind from the southwest (220°) at 5 knots; SEA is VFR, wind from the north (350°) at 11 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 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 1W: thunderstorms (a convective SIGMET) up to 34,000 ft, moving from the southwest at 40 knots, until 8:55 pm MDT (02:55 UTC). Over the first 90 nm of the route.

as issued

WSUS33 KKCI 120055
MKCW WST 120055
CONVECTIVE SIGMET 1W
VALID UNTIL 0255Z
CO NM WY AZ UT
FROM 40NNW CHE-40WNW TBE-60WNW CME-40N SJN-40ESE MTU-40NNW CHE
AREA SEV TS MOV FROM 23040KT. TOPS TO FL340.
WIND GUSTS TO 60KT POSS.

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 first 150 nm of the route.
AIRMET TANGO 4W: moderate turbulence above 18,000 ft from 18,000 ft to 36,000 ft. Over the first 509 nm of the route.
AIRMET TANGO 4W: moderate turbulence below 18,000 ft up to 18,000 ft. Over the first 259 nm of the route.
AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Near the route, at the departure end.
AIRMET ZULU 3C: moderate icing up to 22,000 ft. Over the route from 60 to 499 nm out.
AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 70 to 658 nm out.
AIRMET TANGO 5W: strong surface winds (30 knots or more) (due to sustained surface winds greater than 30 knots). Over the route from 110 to 120 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 160 to 209 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). Near the route, 339 nm along the route.
AIRMET ZULU 2C: moderate icing up to 16,000 ft. Over the route from 578 to 718 nm out.
AIRMET TANGO 1W: moderate turbulence above 18,000 ft from 18,000 ft to 39,000 ft. Over the last 150 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 MTJ.

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

urgent BCS3 at 5,400 ft, 49 nm southwest, 5:35 pm MDT (23:35 UTC): remarks: wind shear 10 knots gain 1000 above ground on final. 199 nm along the route, 49 nm southwest of the line.
as filed, and in English
```
PVU UUA /OV PVU310001/TM 2335/FL054/TP BCS3/RM WIND SHEAR 10 KT GAIN 1000 AGL ON FINAL
```
Report
an urgent report filed through PVU
Where
1 nm northwest (310°) of PVU
Time
23:35 UTC
Height
at 5,400 ft
Aircraft
BCS3
Remarks
wind shear 10 knots gain 1000 above ground on final
E170 at 10,000 ft, 3 nm east, 5:41 pm MDT (23:41 UTC): moderate turbulence up to 10,000 ft, remarks: during the climb. 40 nm along the route, 3 nm east 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
S22T at 14,000 ft, 33 nm southwest, 7:23 pm MDT (01:23 UTC): moderate rime icing, -16 °C. 150 nm along the route, 33 nm southwest of the line.
as filed, and in English
```
PUC UA /OV PUC360015/TM 0123/FL140/TP S22T/TA M16/IC MOD RIME /ZLC
```
Report
a routine report filed through PUC
Where
15 nm north (360°) of PUC
Time
01:23 UTC
Height
at 14,000 ft
Aircraft
S22T
Temperature
−16 °C
Icing
moderate rime zlc
E75L at 22,000 ft, 39 nm southwest, 7:04 pm MDT (01:04 UTC): moderate turbulence. 160 nm along the route, 39 nm southwest of the line.
as filed, and in English
```
PUC UA /OV PUC320020/TM 0104/FL220/TP E75L/TB MOD /ZLC
```
Report
a routine report filed through PUC
Where
20 nm northwest (320°) of PUC
Time
01:04 UTC
Height
at 22,000 ft
Aircraft
E75L
Turbulence
moderate zlc
PA44 at 6,000 ft, 49 nm southwest, 5:25 pm MDT (23:25 UTC): moderate turbulence, remarks: runway in sight at at 6,400 ft. 199 nm along the route, 49 nm southwest of the line.
as filed, and in English
```
PVU UA /OV PVU310002/TM 2325/FL060/TP PA44/TB MOD /RM RWY IN SIGHT AT 064
```
Report
a routine report filed through PVU
Where
2 nm northwest (310°) of PVU
Time
23:25 UTC
Height
at 6,000 ft
Aircraft
PA44
Turbulence
moderate
Remarks
runway in sight at at 6,400 ft
A339 at 16,000 ft, 7 nm south, 5:35 pm MDT (23:35 UTC): moderate chop turbulence up to 16,000 ft, remarks: during the climb zlc. 249 nm along the route, 7 nm south 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, 12 nm southwest, 5:05 pm MDT (23:05 UTC): moderate turbulence up to 15,800 ft, heavy rain, remarks: during the climb zlc. 249 nm along the route, 12 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
SW4 at 20,000 ft, 45 nm east, 7:00 pm MDT (01:00 UTC): light rime icing, 0 °C, remarks: ZDVWC-12. At the departure end, 45 nm east of the line.
as filed, and in English
```
GUC UA /OV GUC/TM 0100/FL200/TP SW4/TA 00/IC LGT RIME/RM ZDVWC-12
```
Report
a routine report filed through GUC
Where
over GUC
Time
01:00 UTC
Height
at 20,000 ft
Aircraft
SW4
Temperature
0 °C
Icing
light rime
Remarks
ZDVWC-12
LJ60 at 15,000 ft, 30 nm northeast, 6:28 pm MDT (00:28 UTC): light to moderate icing from 16,500 ft to 19,000 ft, -13 °C, remarks: during the descent zdvwc. At the departure end, 30 nm northeast of the line.
as filed, and in English
```
MTJ UA /OV MTJ030030/TM 0028/FL150/TP LJ60/TA M13/IC LGT-MOD 190-165/RM DURD ZDVWC
```
Report
a routine report filed through MTJ
Where
30 nm northeast (030°) of MTJ
Time
00:28 UTC
Height
at 15,000 ft
Aircraft
LJ60
Temperature
−13 °C
Icing
light to moderate from 19,000 ft to 16,500 ft
Remarks
during the descent zdvwc
A321 at 10,000 ft, 44 nm southwest, 6:00 pm MDT (00:00 UTC): light chop turbulence, no icing, remarks: during the descent. 219 nm along the route, 44 nm southwest of the line.
as filed, and in English
```
SLC UA /OV TCH165020/TM 0000/FL100/TP A321/TB LGT CHOP/IC NEG/RM DURD
```
Report
a routine report filed through SLC
Where
20 nm south (165°) of TCH
Time
00:00 UTC
Height
at 10,000 ft
Aircraft
A321
Turbulence
light chop
Icing
none
Remarks
during the descent
B737 at 16,000 ft, 47 nm southwest, 6:45 pm MDT (00:45 UTC): no turbulence, light rime icing from 13,000 ft to 17,000 ft, 8 °C, remarks: during the climb. 239 nm along the route, 47 nm southwest of the line.
as filed, and in English
```
SLC UA /OV TCH230020/TM 0045/FL160/TP B737/TA 8/TB NEG/IC LT RIME 130-170/RM DURC
```
Report
a routine report filed through SLC
Where
20 nm southwest (230°) of TCH
Time
00:45 UTC
Height
at 16,000 ft
Aircraft
B737
Temperature
8 °C
Turbulence
none
Icing
lt rime from 13,000 ft to 17,000 ft
Remarks
during the climb
B38M at 16,000 ft, 43 nm southwest, 6:06 pm MDT (00:06 UTC): no turbulence, no icing, 13 °C, remarks: during the climb. 239 nm along the route, 43 nm southwest of the line.
as filed, and in English
```
SLC UA /OV TCH230015/TM 0006/FL160/TP B38M/TA 13/TB NEG/IC NEG/RM DURC
```
Report
a routine report filed through SLC
Where
15 nm southwest (230°) of TCH
Time
00:06 UTC
Height
at 16,000 ft
Aircraft
B38M
Temperature
13 °C
Turbulence
none
Icing
none
Remarks
during the climb
BCS1 at 12,500 ft, 17 nm southwest, 5:09 pm MDT (23:09 UTC): light to moderate turbulence, remarks: during the climb from 8,000 ft to 12,500 ft. 239 nm along the route, 17 nm southwest of the line.
as filed, and in English
```
SLC UA /OV TCH350015/TM 2309/FL125/TP BCS1/TB LGT TO MOD TURB/RM DURC 080-125
```
Report
a routine report filed through SLC
Where
15 nm north (350°) of TCH
Time
23:09 UTC
Height
at 12,500 ft
Aircraft
BCS1
Turbulence
light to moderate turbulence
Remarks
during the climb from 8,000 ft to 12,500 ft
PC12 at 6,000 ft, 22 nm northeast, 7:09 pm MDT (01:09 UTC): scattered clouds up to 6,000 ft, remarks: multiple scattered layers during the descent RY31. 419 nm along the route, 22 nm northeast of the line.
as filed, and in English
```
SUN UA /OV KSUN/TM 0109/FL060/TP PC12/SK SCT-TOP060/WX FV05SM/RM MULTIPLE SCT LAYERS DURD RY31
```
Report
a routine report filed through SUN
Where
over KSUN
Time
01:09 UTC
Height
at 6,000 ft
Aircraft
PC12
Sky
scattered clouds, tops 6,000 ft
Weather
flight visibility 5 miles
Remarks
multiple scattered layers during the descent RY31

7 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 westbound cruising heights for this course (VFR: even thousands plus 500 ft; above 18,000 ft the forecast levels), with the wind averaged along the line from the 7 forecast points nearest it (GJT, SLC, PIH, BOI, LWS, YKM, SEA). A plus sign is a headwind, a minus sign a tailwind.

Height	Average wind	Head- or tailwind	Temperature	Ground speed	Time en route	Arrival
4,500 ft	340° at 8 kt	+7 kt	4 °C	113 kt	7 h 20 min	2:14 am PDT (09:14 UTC)
6,500 ft	340° at 7 kt	+6 kt	0 °C	114 kt	7 h 16 min	2:10 am PDT (09:10 UTC)
8,500 ft	230° at 8 kt	0	0 °C	120 kt	6 h 54 min	1:48 am PDT (08:48 UTC)
10,500 ft	210° at 14 kt	−3 kt	-2 °C	123 kt	6 h 44 min	1:38 am PDT (08:38 UTC)
12,500 ft	210° at 20 kt	−5 kt	-6 °C	125 kt	6 h 37 min	1:31 am PDT (08:31 UTC)
14,500 ft	210° at 22 kt	−7 kt	-10 °C	127 kt	6 h 31 min	1:25 am PDT (08:25 UTC)
16,500 ft	210° at 25 kt	−8 kt	-13 °C	128 kt	6 h 28 min	1:22 am PDT (08:22 UTC)
18,000 ft FL180	210° at 27 kt	−9 kt	-16 °C	129 kt	6 h 25 min	1:19 am PDT (08:19 UTC)
24,000 ft FL240	210° at 30 kt	−8 kt	-25 °C	128 kt	6 h 28 min	1:22 am PDT (08:22 UTC)
30,000 ft FL300	220° at 35 kt	−4 kt	-33 °C	124 kt	6 h 41 min	1:35 am PDT (08:35 UTC)
34,000 ft FL340	230° at 45 kt	+3 kt	-37 °C	117 kt	7 h 05 min	1:59 am PDT (08:59 UTC)
39,000 ft FL390	230° at 48 kt	+10 kt	-43 °C	110 kt	7 h 32 min	2:26 am PDT (09:26 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
GJT	used from 0 nm out; 23 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°
SLC	used from 150 nm out; 65 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°
PIH	used from 299 nm out; 46 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°
BOI	used from 399 nm out; 66 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°
LWS	used from 549 nm out; 90 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°
YKM	used from 648 nm out; 65 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°
SEA	used from 798 nm out; 15 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°

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
MTJ Montrose, CO	departure	VFR	from the southwest (220°) at 5 knots	10+ mi	none	5,758 ft	6:53 pm MDT (00:53 UTC)
GJT Grand Junction, CO	50 nm out, 6 nm east of the line, tower	VFR Sky: a few clouds at 12,000 feet	from the southeast (140°) at 13 knots, gusting to 23	10+ mi	none	4,861 ft	00:53 UTC
EVW Evanston, WY	219 nm out, 19 nm northeast of the line	marginal VFR Sky: a few clouds at 700 feet, overcast at 1,200 feet Weather: light rain	from the west-southwest (240°) at 15 knots	10+ mi	1,200 ft	7,142 ft	01:44 UTC
OGD Ogden, UT	249 nm out, 15 nm southwest of the line, tower	VFR Sky: overcast at 6,000 feet Weather: light rain	from the east (090°) at 8 knots	9 mi	6,000 ft	4,472 ft	00:53 UTC
BYI Burley, ID	359 nm out, 7 nm southwest of the line	VFR Sky: a few clouds at 3,000 feet, a broken layer at 6,500 feet, overcast at 8,000 feet	from the southwest (220°) at 5 knots	10+ mi	6,500 ft	4,153 ft	00:53 UTC
SUN Hailey, ID	419 nm out, 22 nm northeast of the line, tower	marginal VFR Sky: a broken layer at 1,700 feet, overcast at 2,200 feet	calm	10+ mi	1,700 ft	5,319 ft	01:50 UTC
PDT Pendleton, OR	648 nm out, 2 nm northwest of the line, tower	VFR Sky: overcast at 6,000 feet	from the north-northeast (030°) at 3 knots	10+ mi	6,000 ft	1,494 ft	00:53 UTC
YKM Yakima, WA	738 nm out, 1 nm southwest of the line, tower	VFR Sky: overcast at 9,000 feet	calm	10+ mi	9,000 ft	1,098 ft	00:53 UTC
ESW Easton, WA	788 nm out, 18 nm northeast of the line	no report just now				2,226 ft
SEA Seattle, WA	destination	VFR Sky: a few clouds at 5,000 feet	from the north (350°) at 11 knots	10+ mi	none	432 ft	5:53 pm PDT (00:53 UTC)

The highest airport on this list sits at 7,142 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.

At SEA when you get there the forecast at the estimated arrival, 1:19 am PDT (08:19 UTC)

Wind from the northeast at 6 knots, visibility more than 6 miles, clear skies VFR

The whole forecast for SEA

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

The forecast for MTJ, the departure

From Sun 6:00 pm MDT (00:00 UTC): wind from the southwest at 20 knots, gusting to 30, visibility more than 6 miles, a few clouds at 4,000 feet, a broken layer at 11,000 feet
30% chance between Sun 6:00 pm MDT (00:00 UTC) and 8:00 pm MDT (02:00 UTC): visibility 4 miles, light rain showers, a broken layer at 7,000 feet
From Sun 8:00 pm MDT (02:00 UTC): wind from the south-southeast at 13 knots, gusting to 25, visibility more than 6 miles, showers nearby, a few clouds at 5,000 feet, scattered clouds at 12,000 feet
30% chance between Sun 8:00 pm MDT (02:00 UTC) and 10:00 pm MDT (04:00 UTC): visibility 4 miles, light rain showers, a broken layer at 7,000 feet
From Mon 2:00 am MDT (08:00 UTC): wind from the south-southeast at 9 knots, visibility more than 6 miles, scattered clouds at 6,000 feet, a broken layer at 11,000 feet
From Mon 10:00 am MDT (16:00 UTC): wind from the south at 9 knots, visibility more than 6 miles, a few clouds at 5,000 feet, a few clouds at 11,000 feet
From Mon 1:00 pm MDT (19:00 UTC): wind from the southwest at 12 knots, gusting to 21, visibility more than 6 miles, a few clouds at 7,000 feet, scattered clouds at 11,000 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 MTJ 6:38 pm MDT (00:38 UTC), at SEA 6:27 pm PDT (01:27 UTC) (civil twilight ends 6:58 pm PDT (01:58 UTC)). At 120 knots the arrival at SEA is before sunrise there (7:23 am PDT (14:23 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 southern Rockies · loop National Weather Service

Radar now, the northern Rockies · loop National Weather Service

Radar now, the Pacific Northwest · 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: Montrose Regional, Seattle-Tacoma International.