Plan a flight · Sun 7:35 pm CDT (00:35 UTC)

Frederick W Smith Intl/Memphis Airport to Spokane International MEM → GEG

1,442 nautical miles (1,660 statute miles) northwest on a straight line, true course 310°, about 311° magnetic at the departure end (variation 1W). At 120 knots that is 11 h 11 min at the quickest height in today's winds (4,500 ft, a 9-knot tailwind), arriving about 4:46 am PDT (11:46 UTC), after sunset at the destination. Right now MEM is VFR, wind from the south-southwest (210°) at 4 knots; GEG is VFR, wind from the northeast (050°) at 14 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: 662 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 W70W: thunderstorms (a convective SIGMET) up to 32,000 ft, moving from the southwest at 40 knots, until 8:55 pm CDT (01:55 UTC). Over the route from 875 to 1044 nm out.

as issued

WSUS33 KKCI 112355
MKCW WST 112355
CONVECTIVE SIGMET 70W
VALID UNTIL 0155Z
MT WY
FROM 30SSW MLS-60WNW BFF-40SSE OCS-10S BPI-10S BIL-30SSW MLS
AREA TS MOV FROM 22040KT. TOPS TO FL320.

AIRMET TANGO 4W: moderate turbulence above 18,000 ft from 18,000 ft to 36,000 ft. Over the route from 696 to 1373 nm out.
AIRMET TANGO 4W: moderate turbulence below 18,000 ft up to 18,000 ft. Over the route from 895 to 1134 nm out.
AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 935 to 1432 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 945 to 1373 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 945 to 1094 nm out.
AIRMET ZULU 2C: moderate icing up to 14,000 ft. Over the last 149 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 MEM.

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

UAL1340 at 40,000 ft, 32 nm southwest, 7:18 pm CDT (00:18 UTC): moderate chop turbulence, wind 244° at 70 knots. 617 nm along the route, 32 nm southwest of the line.
as filed, and in English
```
ARP UAL1340 4046N 10049W 0018 F400 244/070KT TB OCNL MOD CHOP IC
```
Report
a routine report filed through ARP
E75L at 14,000 ft, 6 nm southwest, 6:22 pm CDT (23:22 UTC): moderate turbulence from 14,000 ft to 21,000 ft, remarks: during the climb zlc. 1283 nm along the route, 6 nm southwest 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
A319 at 39,000 ft, 2 nm south, 6:11 pm CDT (23:11 UTC): no chop turbulence, remarks: smooth. At the departure end, 2 nm south of the line.
as filed, and in English
```
MEM UA /OV MEM/TM 2311/FL390/TP A319/TB NEG CHOP/RM SMOOTH
```
Report
a routine report filed through MEM
Where
over MEM
Time
23:11 UTC
Height
at 39,000 ft
Aircraft
A319
Turbulence
no chop
Remarks
smooth
A321 at 32,000 ft, 16 nm south, 4:58 pm CDT (21:58 UTC): light chop turbulence, remarks: zdvwc. 627 nm along the route, 16 nm south of the line.
as filed, and in English
```
LBF UA /OV LBF/TM 2158/FL320/TP A321/TB OCNL LGT CHOP/RM ZDVWC
```
Report
a routine report filed through LBF
Where
over LBF
Time
21:58 UTC
Height
at 32,000 ft
Aircraft
A321
Turbulence
occasional light chop
Remarks
zdvwc
B789 at 40,000 ft, 39 nm southwest, 7:22 pm CDT (00:22 UTC): light to moderate clear-air turbulence, remarks: zdvwc. 637 nm along the route, 39 nm southwest of the line.
as filed, and in English
```
SNY UA /OV SNY088081/TM 0022/FL400/TP B789/TB OCNL LGT-MOD CAT/RM ZDVWC-
```
Report
a routine report filed through SNY
Where
81 nm east (088°) of SNY
Time
00:22 UTC
Height
at 40,000 ft
Aircraft
B789
Turbulence
occasional light to moderate clear-air turbulence
Remarks
zdvwc
B789 at 40,000 ft, 42 nm southwest, 7:22 pm CDT (00:22 UTC): light to moderate clear-air turbulence, remarks: zdvwc. 647 nm along the route, 42 nm southwest of the line.
as filed, and in English
```
SNY UA /OV SNY088072/TM 0022/FL400/TP B789/TB OCNL LGT-MOD CAT /RM ZDVWC
```
Report
a routine report filed through SNY
Where
72 nm east (088°) of SNY
Time
00:22 UTC
Height
at 40,000 ft
Aircraft
B789
Turbulence
occasional light to moderate clear-air turbulence
Remarks
zdvwc
A21N at 35,000 ft, 42 nm northeast, 5:47 pm CDT (22:47 UTC): no turbulence, remarks: ZDVWC-32. 905 nm along the route, 42 nm northeast of the line.
as filed, and in English
```
GCC UA /OV GCC/TM 2247/FL350/TP A21N/TB NEG /RM ZDVWC-32
```
Report
a routine report filed through GCC
Where
over GCC
Time
22:47 UTC
Height
at 35,000 ft
Aircraft
A21N
Turbulence
none
Remarks
ZDVWC-32
BE9T at 17,500 ft, 17 nm north, 5:40 pm CDT (22:40 UTC): no turbulence, light icing, -6 °C, remarks: ZDVWC-22. 925 nm along the route, 17 nm north of the line.
as filed, and in English
```
GCC UA /OV CZI020012/TM 2240/FL175/TP BE9T/TA M06/TB NEG/IC LGT MIX /RM ZDVWC-22
```
Report
a routine report filed through GCC
Where
12 nm north (020°) of CZI
Time
22:40 UTC
Height
at 17,500 ft
Aircraft
BE9T
Temperature
−6 °C
Turbulence
none
Icing
light mix
Remarks
ZDVWC-22
B737 descending, 7 nm north, 7:28 pm CDT (00:28 UTC): scattered clouds above 8,000 ft, fog, snow, remarks: broke out about 100FT above mins. 1154 nm along the route, 7 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
B738 at 24,000 ft, 4 nm northwest, 6:13 pm CDT (23:13 UTC): remarks: snow top flight level at 24,000 ft zlc. 1184 nm along the route, 4 nm northwest 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
B739 at 3,700 ft, 15 nm north, 4:58 pm CDT (21:58 UTC): overcast above 3,700 ft, remarks: during the descent ils runway 12. 1293 nm along the route, 15 nm north of the line.
as filed, and in English
```
MSO UA /OV MSO/TM 2158/FL037/TP B739/SK OVC037/RM DURD ILS RY 12
```
Report
a routine report filed through MSO
Where
over MSO
Time
21:58 UTC
Height
at 3,700 ft
Aircraft
B739
Sky
overcast from 3,700 ft
Remarks
during the descent ils runway 12

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 13 forecast points nearest it (MEM, SGF, MKC, SLN, GRI, BFF, RAP, LND, BIL, DLN, GPI, LWS, GEG). 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	170° at 12 kt	−9 kt	11 °C	129 kt	11 h 11 min	4:46 am PDT (11:46 UTC)
6,500 ft	190° at 11 kt	−6 kt	13 °C	126 kt	11 h 27 min	5:02 am PDT (12:02 UTC)
8,500 ft	200° at 13 kt	−3 kt	8 °C	123 kt	11 h 43 min	5:18 am PDT (12:18 UTC)
10,500 ft	220° at 15 kt	+1 kt	5 °C	119 kt	12 h 07 min	5:42 am PDT (12:42 UTC)
12,500 ft	220° at 18 kt	+4 kt	2 °C	116 kt	12 h 26 min	6:01 am PDT (13:01 UTC)
14,500 ft	230° at 20 kt	+6 kt	-2 °C	114 kt	12 h 39 min	6:14 am PDT (13:14 UTC)
16,500 ft	230° at 22 kt	+7 kt	-7 °C	113 kt	12 h 46 min	6:21 am PDT (13:21 UTC)
18,000 ft FL180	230° at 24 kt	+9 kt	-9 °C	111 kt	12 h 59 min	6:34 am PDT (13:34 UTC)
24,000 ft FL240	230° at 33 kt	+13 kt	-20 °C	107 kt	13 h 29 min	7:04 am PDT (14:04 UTC)
30,000 ft FL300	230° at 40 kt	+15 kt	-34 °C	105 kt	13 h 44 min	7:19 am PDT (14:19 UTC)
34,000 ft FL340	250° at 47 kt	+28 kt	-41 °C	92 kt	15 h 40 min	9:15 am PDT (16:15 UTC)
39,000 ft FL390	260° at 51 kt	+38 kt	-48 °C	82 kt	17 h 35 min	11:10 am PDT (18:10 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
MEM	used from 0 nm out; 25 nm from the line	240/9	280/14 17°	280/20 12°	290/25 5°	320/25 -6°	330/31 -18°	320/52 -32°	330/58 -41°	320/42 -50°
SGF	used from 99 nm out; 87 nm from the line	210/21	210/21 16°	240/28 12°	260/24 7°	280/21 -6°	280/26 -18°	290/38 -31°	290/37 -41°	300/49 -52°
MKC	used from 298 nm out; 53 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°
SLN	used from 398 nm out; 48 nm from the line	190/37	220/39 20°	240/31 14°	250/24 7°	260/25 -7°	250/26 -17°	250/44 -31°	260/47 -40°	260/47 -50°
GRI	used from 497 nm out; 43 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°
BFF	used from 647 nm out; 96 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°
RAP	used from 845 nm out; 103 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°
LND	used from 895 nm out; 124 nm from the line			180/33 10°	190/50 3°	210/59 -9°	200/50 -21°	190/41 -34°	230/55 -39°	240/65 -47°
BIL	used from 995 nm out; 70 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°
DLN	used from 1144 nm out; 56 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°
GPI	used from 1293 nm out; 91 nm from the line		060/19 -3°	110/11 -8°	130/6 -8°	200/40 -19°	190/58 -28°	200/101 -39°	220/73 -43°	230/41 -43°
LWS	used from 1343 nm out; 67 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°
GEG	used from 1393 nm out; 25 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°

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
MEM Memphis, TN	departure	VFR Sky: a few clouds at 22,000 feet	from the south-southwest (210°) at 4 knots	10+ mi	none	340 ft	6:54 pm CDT (23:54 UTC)
CVK Ash Flat, AR	109 nm out, 8 nm northeast of the line	no report just now				717 ft
SGF Springfield, MO	209 nm out, 3 nm west of the line, tower	VFR	from the south (190°) at 6 knots	10+ mi	none	1,268 ft	23:52 UTC
MHK Manhattan, KS	408 nm out, 5 nm south of the line, tower	VFR	from the south (190°) at 9 knots	10+ mi	none	1,066 ft	23:52 UTC
RPB Belleville, KS	467 nm out, 4 nm east of the line	no report just now				1,538 ft
LXN Lexington, NE	577 nm out, 4 nm southwest of the line	VFR	from the southeast (130°) at 4 knots	10+ mi	none	2,412 ft	00:15 UTC
AIA Alliance, NE	736 nm out, 15 nm south of the line	VFR	from the east (100°) at 12 knots	10+ mi	none	3,930 ft	23:53 UTC
GEY Greybull, WY	1005 nm out, 4 nm west of the line	marginal VFR Sky: a broken layer at 1,100 feet, a broken layer at 2,600 feet, overcast at 6,500 feet	from the west-northwest (290°) at 12 knots	10+ mi	1,100 ft	3,941 ft	00:10 UTC
POY Powell, WY	1044 nm out, 2 nm northeast of the line	low IFR Sky: overcast at 300 feet Weather: mist	from the northwest (310°) at 17 knots, gusting to 24	1.5 mi	300 ft	5,096 ft	00:10 UTC
BZN Bozeman, MT	1154 nm out, 6 nm north of the line, tower	low IFR Sky: scattered clouds at 200 feet, scattered clouds at 700 feet, overcast at 1,100 feet Weather: snow, fog	calm	0.5 mi	1,100 ft	4,473 ft	23:56 UTC
COE Coeur D'Alene, ID	1422 nm out, 20 nm northeast of the line	VFR Sky: a few clouds at 5,000 feet, overcast at 6,500 feet	from the northeast (040°) at 13 knots	10+ mi	6,500 ft	2,320 ft	23:56 UTC
GEG Spokane, WA	destination	VFR Sky: a broken layer at 5,500 feet, a broken layer at 7,500 feet, a broken layer at 10,000 feet	from the northeast (050°) at 14 knots	10+ mi	5,500 ft	2,385 ft	4:53 pm PDT (23:53 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 GEG when you get there the forecast at the estimated arrival, 4:46 am PDT (11:46 UTC)

Wind from the northeast at 7 knots, visibility more than 6 miles, a few clouds at 7,000 feet VFR

The whole forecast for GEG

From Sun 5:00 pm PDT (00:00 UTC): wind from the northeast at 15 knots, gusting to 22, visibility more than 6 miles, a broken layer at 8,000 feet
From Sun 7:00 pm PDT (02:00 UTC): wind from the northeast at 10 knots, gusting to 20, visibility more than 6 miles, scattered clouds at 7,000 feet
From Sun 11:00 pm PDT (06:00 UTC): wind from the northeast at 7 knots, visibility more than 6 miles, a few clouds at 7,000 feet
From Mon 9:00 am PDT (16:00 UTC): wind light and variable, visibility more than 6 miles, a few clouds at 10,000 feet

The forecast for MEM, the departure

From Sun 7:00 pm CDT (00:00 UTC): wind from the south-southwest at 4 knots, visibility more than 6 miles, a few clouds at 25,000 feet
From Mon 11:00 am CDT (16:00 UTC): wind from the west-southwest at 9 knots, gusting to 17, visibility more than 6 miles, clear skies
From Mon 7:00 pm CDT (00:00 UTC): wind from the south-southwest at 6 knots, visibility more than 6 miles, a few clouds at 10,000 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 MEM 6:29 pm CDT (23:29 UTC), at GEG 6:08 pm PDT (01:08 UTC) (civil twilight ends 6:38 pm PDT (01:38 UTC)). At 120 knots the arrival at GEG is before sunrise there (7:04 am PDT (14:04 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 lower Mississippi valley · loop National Weather Service

Radar now, the upper Mississippi valley · loop National Weather Service

Radar now, the southern Plains · 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: Frederick W Smith Intl/Memphis Airport, Spokane International.