Plan a flight · Mon 10:50 am CDT (15:50 UTC)

Robert Gray Army Airfield to Portland International GRK → PDX

1,446 nautical miles (1,664 statute miles) northwest on a straight line, true course 314°, about 310° magnetic at the departure end (variation 4E). At 120 knots that is 11 h 51 min at the quickest height in today's winds (8,500 ft, a 2-knot tailwind), arriving about 8:41 pm PDT (03:41 UTC), after sunset at the destination. Right now GRK is marginal VFR, wind from the south-southeast (150°) at 14 knots, gusting to 18; PDX is IFR, wind calm. 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 W29W: thunderstorms (a convective SIGMET) up to 28,000 ft, moving from the west at 45 knots, until 11:55 am CDT (16:55 UTC). Over the route from 858 to 928 nm out.

as issued

WSUS33 KKCI 121455
MKCW WST 121455
CONVECTIVE SIGMET 29W
VALID UNTIL 1655Z
WY UT
FROM 20SE MLD-50WSW OCS-10SSE MTU-40E BVL-20SE MLD
DMSHG AREA TS MOV FROM 26045KT. TOPS TO FL280.

AIRMET TANGO 4W: moderate turbulence above 18,000 ft (due to mountain wave) from 34,000 ft to 43,000 ft. Over the route from 419 to 818 nm out.
AIRMET TANGO 2W: moderate turbulence below 18,000 ft (due to mountain wave) up to 22,000 ft. Over the route from 459 to 698 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 549 to 648 nm out.
AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 588 to 1107 nm out.
AIRMET ZULU 2C: moderate icing up to 23,000 ft. Over the route from 698 to 1087 nm out.
AIRMET TANGO 4W: moderate turbulence below 18,000 ft (due to mountain wave) up to 12,000 ft. Over the route from 708 to 898 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, 1007 nm along the route.
AIRMET ZULU 2C: moderate icing up to 18,000 ft. Near the route, 1087 nm along the route.
AIRMET TANGO 1W: moderate turbulence above 18,000 ft from 18,000 ft to 39,000 ft. Over the last 289 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 GRK.

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

CRJ7 at 16,000 ft, 42 nm southwest, 8:13 am CDT (13:13 UTC): moderate rime icing from 15,000 ft to 19,000 ft, -13 °C. 868 nm along the route, 42 nm southwest of the line.
as filed, and in English
```
PVU UA /OV FFU165026/TM 1313/FL160/TP CRJ7/SK TOPS 196/TA M13/IC MOD RIME 150-190/ZLC
```
Report
a routine report filed through PVU
Where
26 nm south (165°) of FFU
Time
13:13 UTC
Height
at 16,000 ft
Aircraft
CRJ7
Sky
tops 19,600 ft
Temperature
−13 °C
Icing
moderate rime 150-190/ZLC
A319 at 19,000 ft, 21 nm southwest, 8:53 am CDT (13:53 UTC): moderate turbulence, moderate rime icing, -12 °C, wind 234° at 38 knots, remarks: during the descent. 878 nm along the route, 21 nm southwest of the line.
as filed, and in English
```
SLC UA /OV FFU/TM 1353/FL190/TP A319/TA M12/WV 234038/TB MOD TURB/IC MOD RIME/RM DURD
```
Report
a routine report filed through SLC
Where
over FFU
Time
13:53 UTC
Height
at 19,000 ft
Aircraft
A319
Temperature
−12 °C
Wind
from 234° at 38 knots
Turbulence
moderate turbulence
Icing
moderate rime
Remarks
during the descent
C56X at 20,000 ft, 49 nm southwest, 9:25 am CDT (14:25 UTC): moderate turbulence above 20,000 ft. 888 nm along the route, 49 nm southwest of the line.
as filed, and in English
```
PVU UA /OV FFU205028/TM 1425/FL200/TP C56X/TB MOD 200 /ZLC
```
Report
a routine report filed through PVU
Where
28 nm southwest (205°) of FFU
Time
14:25 UTC
Height
at 20,000 ft
Aircraft
C56X
Turbulence
moderate at 20,000 ft zlc
B739 at 27,000 ft, 6 nm south, 7:56 am CDT (12:56 UTC): moderate chop turbulence. 1087 nm along the route, 6 nm south of the line.
as filed, and in English
```
TWF UA /OV TWF247042/TM 1256/FL270/TP B739/TB MOD CHOP/ZLC
```
Report
a routine report filed through TWF
Where
42 nm southwest (247°) of TWF
Time
12:56 UTC
Height
at 27,000 ft
Aircraft
B739
Turbulence
moderate chop/zlc
E170 at 12,000 ft, 32 nm southwest, 7:52 am CDT (12:52 UTC): moderate turbulence from 12,000 ft to 15,000 ft, remarks: during the climb sbound zse. 1347 nm along the route, 32 nm southwest of the line.
as filed, and in English
```
RDM UA /OV DSD060018/TM 1252/FL120/TP E170/TB MOD 120-150/RM DURC SBOUND ZSE
```
Report
a routine report filed through RDM
Where
18 nm northeast (060°) of DSD
Time
12:52 UTC
Height
at 12,000 ft
Aircraft
E170
Turbulence
moderate from 12,000 ft to 15,000 ft
Remarks
during the climb sbound zse
P28A descending, 25 nm south, 10:43 am CDT (15:43 UTC): a broken layer above 2,400 ft. At the departure end, 25 nm south of the line.
as filed, and in English
```
GTU UA /OV 4NM N/TM 1543/FLDURD/TP P28A/SK BKN024 - TOPUNK
```
Report
a routine report filed through GTU
Where
4NM north
Time
15:43 UTC
Height
during the descent
Aircraft
P28A
Sky
BKN024 topunk
P28A descending, 25 nm south, 9:58 am CDT (14:58 UTC): overcast from 1,800 ft to 2,300 ft. At the departure end, 25 nm south of the line.
as filed, and in English
```
GTU UA /OV 4NM N/TM 1458/FLDURD/TP P28A/SK OVC018 - TOP023
```
Report
a routine report filed through GTU
Where
4NM north
Time
14:58 UTC
Height
during the descent
Aircraft
P28A
Sky
overcast from 1,800 ft, tops 2,300 ft
A321 at 4,500 ft, 43 nm south, 8:15 am CDT (13:15 UTC): remarks: on final during the descent. At the departure end, 43 nm south of the line.
as filed, and in English
```
AUS UA /OV 10N KAUS/TM 1315/FL045/TP A321/SK T045/RM ON FINAL DURD
```
Report
a routine report filed through AUS
Where
10N KAUS
Time
13:15 UTC
Height
at 4,500 ft
Aircraft
A321
Sky
T045
Remarks
on final during the descent
PC12 descending, 25 nm south, 8:02 am CDT (13:02 UTC): a broken layer above 2,200 ft. At the departure end, 25 nm south of the line.
as filed, and in English
```
GTU UA /OV 5NM N/TM 1302/FLDURD/TP PC12/SK BKN022 - TOPUNK
```
Report
a routine report filed through GTU
Where
5NM north
Time
13:02 UTC
Height
during the descent
Aircraft
PC12
Sky
BKN022 topunk
E145 at 40,000 ft, 13 nm northeast, 8:38 am CDT (13:38 UTC): no turbulence, remarks: ZFW55. 229 nm along the route, 13 nm northeast of the line.
as filed, and in English
```
LBB UA /OV LBB070050/TM 1338/FL400/TP E145/TB NEG/RM ZFW55
```
Report
a routine report filed through LBB
Where
50 nm east (070°) of LBB
Time
13:38 UTC
Height
at 40,000 ft
Aircraft
E145
Turbulence
none
Remarks
ZFW55
B738 at 32,000 ft, 25 nm southwest, 9:56 am CDT (14:56 UTC): light chop turbulence, remarks: ZFW93. 259 nm along the route, 25 nm southwest of the line.
as filed, and in English
```
LBB UA /OV LBB/TM 1456/FL320/TP B738/TB LGT CHOP/RM ZFW93
```
Report
a routine report filed through LBB
Where
over LBB
Time
14:56 UTC
Height
at 32,000 ft
Aircraft
B738
Turbulence
light chop
Remarks
ZFW93
B738 at 37,000 ft, 24 nm northeast, 9:57 am CDT (14:57 UTC): no turbulence, remarks: ZFW55. 299 nm along the route, 24 nm northeast of the line.
as filed, and in English
```
AMA UA /OV AMA180030/TM 1457/FL370/TP B738/TB NEG/RM ZFW55
```
Report
a routine report filed through AMA
Where
30 nm south (180°) of AMA
Time
14:57 UTC
Height
at 37,000 ft
Aircraft
B738
Turbulence
none
Remarks
ZFW55
A21N at 34,000 ft, 41 nm northeast, 9:45 am CDT (14:45 UTC): light chop turbulence, no icing, remarks: ZDVWC-04. 688 nm along the route, 41 nm northeast of the line.
as filed, and in English
```
MTJ UA /OV MTJ354039/TM 1445/FL340/TP A21N/TB CONS LGT CHOP/IC NEG/RM -ZDVWC-04
```
Report
a routine report filed through MTJ
Where
39 nm north (354°) of MTJ
Time
14:45 UTC
Height
at 34,000 ft
Aircraft
A21N
Turbulence
continuous light chop
Icing
none
Remarks
ZDVWC-04
A21N at 18,000 ft, 15 nm northeast, 9:36 am CDT (14:36 UTC): light rime icing from 18,000 ft to 19,500 ft, -17 °C. 888 nm along the route, 15 nm northeast of the line.
as filed, and in English
```
SLC UA /OV TCH075015/TM 1436/FL180/TP A21N/TA M17/IC LGT RIME 180-195 /ZLC
```
Report
a routine report filed through SLC
Where
15 nm east (075°) of TCH
Time
14:36 UTC
Height
at 18,000 ft
Aircraft
A21N
Temperature
−17 °C
Icing
light rime from 18,000 ft to 19,500 ft zlc

12 more routine reports are on the map.

Winds aloft along the route, and the time en route the forecast for use 14:00–21:00 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 11 forecast points nearest it (ABI, LBB, AMA, TCC, ALS, GJT, SLC, PIH, BOI, RDM, PDX). 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	230° at 6 kt	+1 kt	9 °C	119 kt	12 h 09 min	8:59 pm PDT (03:59 UTC)
6,500 ft	230° at 6 kt	0	7 °C	120 kt	12 h 03 min	8:53 pm PDT (03:53 UTC)
8,500 ft	210° at 10 kt	−2 kt	4 °C	122 kt	11 h 51 min	8:41 pm PDT (03:41 UTC)
10,500 ft	210° at 16 kt	−2 kt	2 °C	122 kt	11 h 51 min	8:41 pm PDT (03:41 UTC)
12,500 ft	210° at 18 kt	−2 kt	-2 °C	122 kt	11 h 51 min	8:41 pm PDT (03:41 UTC)
14,500 ft	220° at 23 kt	0	-6 °C	120 kt	12 h 03 min	8:53 pm PDT (03:53 UTC)
16,500 ft	220° at 28 kt	+2 kt	-9 °C	118 kt	12 h 15 min	9:05 pm PDT (04:05 UTC)
18,000 ft FL180	230° at 31 kt	+4 kt	-12 °C	116 kt	12 h 28 min	9:18 pm PDT (04:18 UTC)
24,000 ft FL240	220° at 39 kt	+2 kt	-23 °C	118 kt	12 h 15 min	9:05 pm PDT (04:05 UTC)
30,000 ft FL300	230° at 46 kt	+8 kt	-30 °C	112 kt	12 h 55 min	9:45 pm PDT (04:45 UTC)
34,000 ft FL340	240° at 46 kt	+14 kt	-37 °C	106 kt	13 h 38 min	10:28 pm PDT (05:28 UTC)
39,000 ft FL390	230° at 45 kt	+12 kt	-46 °C	108 kt	13 h 23 min	10:13 pm PDT (05:13 UTC)

Based on data from the 12th at 12:00 UTC; valid on the 12th at 18:00 UTC for use 14:00 to 21:00 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
ABI	used from 0 nm out; 99 nm from the line		210/22 19°	210/14 15°	210/19 8°	240/17 -4°	240/31 -15°	240/35 -27°	260/30 -37°	260/18 -51°
LBB	used from 199 nm out; 38 nm from the line		240/21 20°	230/20 15°	210/19 8°	230/39 -6°	230/48 -16°	240/57 -27°	250/51 -37°	240/45 -50°
AMA	used from 299 nm out; 51 nm from the line		240/20	230/25 14°	230/31 8°	230/42 -7°	240/50 -18°	240/69 -27°	250/68 -37°	250/58 -49°
TCC	used from 349 nm out; 16 nm from the line		230/14	240/29 12°	220/39 6°	230/48 -6°	230/52 -19°	230/77 -27°	240/77 -37°	250/71 -49°
ALS	used from 449 nm out; 80 nm from the line				230/34 2°	230/57 -9°	230/72 -19°	230/82 -27°	230/91 -36°	240/89 -48°
GJT	used from 648 nm out; 44 nm from the line			190/30 6°	200/35 0°	220/50 -13°	220/69 -22°	220/81 -30°	230/84 -39°	230/88 -47°
SLC	used from 798 nm out; 77 nm from the line		180/7	200/22 2°	200/30 -4°	210/47 -16°	200/73 -27°	210/81 -32°	210/71 -37°	210/55 -43°
PIH	used from 997 nm out; 95 nm from the line		L/V	180/8 -1°	190/21 -6°	210/56 -18°	190/64 -28°	210/68 -31°	210/60 -36°	210/54 -42°
BOI	used from 1047 nm out; 85 nm from the line		360/9 1°	L/V -5°	180/10 -12°	200/58 -21°	180/62 -31°	200/41 -31°	210/34 -32°	200/29 -41°
RDM	used from 1247 nm out; 91 nm from the line		020/13 -1°	020/22 -8°	030/30 -11°	010/62 -17°	360/87 -26°	010/79 -39°	360/55 -43°	300/10 -43°
PDX	used from 1396 nm out; 25 nm from the line	L/V	L/V 1°	030/14 -4°	020/32 -5°	010/54 -14°	360/65 -26°	360/71 -41°	360/65 -47°	350/39 -46°

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
GRK Fort Hood (Killeen), TX	departure	marginal VFR Sky: a broken layer at 1,500 feet, overcast at 2,200 feet	from the south-southeast (150°) at 14 knots, gusting to 18	10+ mi	1,500 ft	1,015 ft	10:30 am CDT (15:30 UTC)
ABI Abilene, TX	120 nm out, 8 nm west of the line, tower	marginal VFR Sky: a broken layer at 2,200 feet, overcast at 2,700 feet	from the south (190°) at 14 knots, gusting to 27	10+ mi	2,200 ft	1,790 ft	14:52 UTC
LBB Lubbock, TX	249 nm out, 25 nm southwest of the line, tower	VFR Sky: a few clouds at 12,000 feet	from the south-southwest (200°) at 11 knots	10+ mi	none	3,282 ft	14:53 UTC
HRX Hereford, TX	319 nm out, 13 nm northeast of the line	reported, no category	from the southwest (230°) at 12 knots	10+ mi	none	3,787 ft	15:30 UTC
AXX Angel Fire, NM	489 nm out, 11 nm southwest of the line	VFR Sky: a broken layer at 3,900 feet	from the west-southwest (240°) at 12 knots, gusting to 23	10+ mi	3,900 ft	8,379 ft	15:35 UTC
GJT Grand Junction, CO	708 nm out, 19 nm northeast of the line, tower	VFR Sky: overcast at 8,500 feet Weather: light rain	from the east-southeast (110°) at 12 knots	10+ mi	8,500 ft	4,861 ft	14:53 UTC
PUC Price, UT	818 nm out, 21 nm southwest of the line	VFR	from the east (090°) at 7 knots	10+ mi	none	5,957 ft	14:53 UTC
SLC Salt Lake City, UT	898 nm out, 4 nm north of the line, tower	VFR Sky: a few clouds at 4,000 feet, scattered clouds at 6,000 feet, a broken layer at 8,000 feet, overcast at 14,000 feet Weather: light rain	from the south (190°) at 14 knots, gusting to 23	10+ mi	8,000 ft	4,230 ft	14:54 UTC
TWF Twin Falls, ID	1047 nm out, 23 nm northeast of the line, tower	VFR Sky: scattered clouds at 8,000 feet, overcast at 10,000 feet	from the west-southwest (250°) at 8 knots	10+ mi	10,000 ft	4,153 ft	14:53 UTC
GCD John Day, OR	1277 nm out, 15 nm northeast of the line	VFR Sky: scattered clouds at 3,100 feet, scattered clouds at 3,700 feet, overcast at 4,800 feet	from the west (260°) at 5 knots	10+ mi	4,800 ft	3,702 ft	15:35 UTC
CZK Cascade Locks, OR	1426 nm out, 20 nm northeast of the line	no report just now				151 ft
PDX Portland, OR	destination	IFR Sky: a broken layer at 600 feet	calm	7 mi	600 ft	30 ft	8:22 am PDT (15:22 UTC)

The highest airport on this list sits at 8,379 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.

At PDX when you get there the forecast at the estimated arrival, 8:41 pm PDT (03:41 UTC)

Wind light and variable, visibility more than 6 miles, clear skies VFR

The whole forecast for PDX

From Mon 7:00 am PDT (14:00 UTC): wind light and variable, visibility more than 6 miles, clear skies
At times between Mon 7:00 am PDT (14:00 UTC) and 10:00 am PDT (17:00 UTC): a broken layer at 800 feet

The forecast for GRK, the departure

From Mon 7:00 am CDT (12:00 UTC): wind from the south-southeast at 9 knots, scattered clouds at 1,500 feet, a broken layer at 15,000 feet
At times between Mon 7:00 am CDT (12:00 UTC) and 11:00 am CDT (16:00 UTC): a broken layer at 1,500 feet
Changing between Mon 11:00 am CDT (16:00 UTC) and 12:00 pm CDT (17:00 UTC) to: wind from the south-southeast at 9 knots, a broken layer at 5,000 feet
Changing between Mon 5:00 pm CDT (22:00 UTC) and 6:00 pm CDT (23:00 UTC) to: wind from the south-southeast at 9 knots, a broken layer at 10,000 feet
Changing between Mon 10:00 pm CDT (03:00 UTC) and 11:00 pm CDT (04:00 UTC) to: wind from the south-southeast at 9 knots, a broken layer at 1,000 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 GRK 7:02 pm CDT (00:02 UTC), at PDX 6:28 pm PDT (01:28 UTC) (civil twilight ends 6:58 pm PDT (01:58 UTC)). At 120 knots the arrival at PDX is after sunset there (6:30 pm PDT (01:30 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 Plains · loop National Weather Service

Radar now, the southern 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: Robert Gray Army Airfield, Portland International.