Plan a flight · Sun 9:35 pm CDT (02:35 UTC)

Robert Gray Army Airfield to Denver International GRK → DEN

625 nautical miles (719 statute miles) northwest on a straight line, true course 330°, about 326° magnetic at the departure end (variation 4E). At 120 knots that is 4 h 32 min at the quickest height in today's winds (4,500 ft, a 18-knot tailwind), arriving about 1:07 am MDT (07:07 UTC), after sunset at the destination. Right now GRK is VFR, wind from the southeast (140°) at 6 knots; DEN is VFR, wind from the south-southwest (200°) 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: 11 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 6W: thunderstorms (a convective SIGMET) up to 34,000 ft, moving from the southwest at 40 knots, until 10:55 pm CDT (03:55 UTC). Near the route, 486 nm along the route.

as issued

WSUS33 KKCI 120155
MKCW WST 120155
CONVECTIVE SIGMET 6W
VALID UNTIL 0355Z
CO NM
FROM 50SSW DEN-30NNE TBE-50SSW CME-50E SJN-20NE DVC-50SSW DEN
AREA TS MOV FROM 23040KT. TOPS TO FL340.

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 397 to 486 nm out.
AIRMET TANGO 4W: moderate turbulence below 18,000 ft up to 18,000 ft. Over the last 119 nm of the route.
AIRMET TANGO 4W: moderate turbulence above 18,000 ft from 18,000 ft to 36,000 ft. Over the last 79 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

urgent B407 at 10,000 ft, 45 nm southwest, 9:13 pm CDT (02:13 UTC): moderate to severe turbulence. 575 nm along the route, 45 nm southwest of the line.
as filed, and in English
```
COS UUA /OV 10 W COS/TM 0213/FL100/TP B407/TB MDT-SEV
```
Report
an urgent report filed through COS
Where
10 west cos
Time
02:13 UTC
Height
at 10,000 ft
Aircraft
B407
Turbulence
mdt-sev
GLF4 at 25,000 ft, 41 nm southwest, 9:05 pm CDT (02:05 UTC): moderate turbulence, remarks: during the climb ZDVWC-05. At the destination end, 41 nm southwest of the line.
as filed, and in English
```
DEN UA /OV FQF250040/TM 0205/FL250/TP GLF4/TB MOD /RM DURC ZDVWC-05
```
Report
a routine report filed through DEN
Where
40 nm west (250°) of FQF
Time
02:05 UTC
Height
at 25,000 ft
Aircraft
GLF4
Turbulence
moderate
Remarks
during the climb ZDVWC-05
BCS1 at 24,000 ft, 28 nm west, 8:30 pm CDT (01:30 UTC): moderate turbulence from 22,000 ft to 24,000 ft, remarks: during the climb ZDVWC-05. At the destination end, 28 nm west of the line.
as filed, and in English
```
DEN UA /OV DVV270030/TM 0130/FL240/TP BCS1/TB MOD 220-240/RM DURC ZDVWC-05
```
Report
a routine report filed through DEN
Where
30 nm west (270°) of DVV
Time
01:30 UTC
Height
at 24,000 ft
Aircraft
BCS1
Turbulence
moderate from 22,000 ft to 24,000 ft
Remarks
during the climb ZDVWC-05
A21N at 32,000 ft, 46 nm northeast, 6:42 pm CDT (23:42 UTC): moderate chop turbulence, remarks: ZDVWC-61. At the destination end, 46 nm northeast of the line.
as filed, and in English
```
AKO UA /OV AKO270030/TM 2342/FL320/TP A21N/TB INTMT MOD CHOP/RM ZDVWC-61
```
Report
a routine report filed through AKO
Where
30 nm west (270°) of AKO
Time
23:42 UTC
Height
at 32,000 ft
Aircraft
A21N
Turbulence
intermittent moderate chop
Remarks
ZDVWC-61
A320 at 35,000 ft, 27 nm southwest, 7:43 pm CDT (00:43 UTC): light chop turbulence, remarks: ZFW47. 258 nm along the route, 27 nm southwest of the line.
as filed, and in English
```
CDS UA /OV CDS270030/TM 0043/FL350/TP A320/TB LGT CHOP/RM ZFW47
```
Report
a routine report filed through CDS
Where
30 nm west (270°) of CDS
Time
00:43 UTC
Height
at 35,000 ft
Aircraft
A320
Turbulence
light chop
Remarks
ZFW47
A21N at 31,000 ft, 44 nm southwest, 7:24 pm CDT (00:24 UTC): remarks: mountain wave +/-10-20KT ZDVWC-29. 545 nm along the route, 44 nm southwest of the line.
as filed, and in English
```
PUB UA /OV PUB/TM 0024/FL310/TP A21N/RM MTN WAVE +/-10-20KT ZDVWC-29
```
Report
a routine report filed through PUB
Where
over PUB
Time
00:24 UTC
Height
at 31,000 ft
Aircraft
A21N
Remarks
mountain wave +/-10-20KT ZDVWC-29
B737 at 25,000 ft, 44 nm southwest, 7:29 pm CDT (00:29 UTC): light rime icing, 0 °C, remarks: during the climb ZDVWC-29. 585 nm along the route, 44 nm southwest of the line.
as filed, and in English
```
COS UA /OV BRK242015/TM 0029/FL250/TP B737/SK TOP280/TA 00/IC LGT RIME/RM DURC ZDVWC-29
```
Report
a routine report filed through COS
Where
15 nm southwest (242°) of BRK
Time
00:29 UTC
Height
at 25,000 ft
Aircraft
B737
Sky
TOP280
Temperature
0 °C
Icing
light rime
Remarks
during the climb ZDVWC-29
E55P at 38,000 ft, 40 nm southwest, 8:23 pm CDT (01:23 UTC): light chop turbulence, remarks: ZDVWC-05. 595 nm along the route, 40 nm southwest of the line.
as filed, and in English
```
DEN UA /OV FQF200040/TM 0123/FL380/TP E55P/TB LGT CHOP/RM ZDVWC-05
```
Report
a routine report filed through DEN
Where
40 nm south (200°) of FQF
Time
01:23 UTC
Height
at 38,000 ft
Aircraft
E55P
Turbulence
light chop
Remarks
ZDVWC-05
GLF6 at 40,000 ft, 29 nm southwest, 7:48 pm CDT (00:48 UTC): light to moderate chop turbulence, remarks: ZDVWC-46. 595 nm along the route, 29 nm southwest of the line.
as filed, and in English
```
COS UA /OV COS340020/TM 0048/FL400/TP GLF6/TB LGT-MOD CHOP/RM ZDVWC-46
```
Report
a routine report filed through COS
Where
20 nm north (340°) of COS
Time
00:48 UTC
Height
at 40,000 ft
Aircraft
GLF6
Turbulence
light to moderate chop
Remarks
ZDVWC-46
B737 at 14,000 ft, 15 nm southwest, 7:20 pm CDT (00:20 UTC): light to moderate turbulence, remarks: light to moderate from 14,000 ft to 16,000 ft occn light above 16,000 ft. At the destination end, 15 nm southwest of the line.
as filed, and in English
```
DEN UA /OV DEN170025/TM 0020/FL140/TP B737/TB LGT-MOD/RM LGT-MOD 140-160 OCCN LGT ABOVE 160
```
Report
a routine report filed through DEN
Where
25 nm south (170°) of DEN
Time
00:20 UTC
Height
at 14,000 ft
Aircraft
B737
Turbulence
light to moderate
Remarks
light to moderate from 14,000 ft to 16,000 ft occn light above 16,000 ft
A320 at 8,000 ft, 24 nm northeast, 6:42 pm CDT (23:42 UTC): light chop turbulence from 8,000 ft to 16,000 ft, remarks: during the climb. At the destination end, 24 nm northeast of the line.
as filed, and in English
```
DEN UA /OV DEN080030/TM 2342/FL080/TP A320/TB LGT CHOP 080-160/RM DURC
```
Report
a routine report filed through DEN
Where
30 nm east (080°) of DEN
Time
23:42 UTC
Height
at 8,000 ft
Aircraft
A320
Turbulence
light chop from 8,000 ft to 16,000 ft
Remarks
during the climb
B737 descending, 3 nm south, 9:29 pm CDT (02:29 UTC): no turbulence up to 10,000 ft. At the destination end, 3 nm south of the line.
as filed, and in English
```
DEN UA /OV DEN/TM 0229/FLDURD/TP B737/TB NEG BLO 100
```
Report
a routine report filed through DEN
Where
over DEN
Time
02:29 UTC
Height
during the descent
Aircraft
B737
Turbulence
no below 10,000 ft
B737 descending, 3 nm south, 8:23 pm CDT (01:23 UTC): no turbulence up to 10,000 ft. At the destination end, 3 nm south of the line.
as filed, and in English
```
DEN UA /OV DEN/TM 0123/FLDURD/TP B737/TB NEG BLO 100
```
Report
a routine report filed through DEN
Where
over DEN
Time
01:23 UTC
Height
during the descent
Aircraft
B737
Turbulence
no below 10,000 ft
A321 descending, 3 nm south, 7:26 pm CDT (00:26 UTC): no turbulence up to 10,000 ft. At the destination end, 3 nm south of the line.
as filed, and in English
```
DEN UA /OV DEN/TM 0026/FLDURD/TP A321/TB NEG BLO 100
```
Report
a routine report filed through DEN
Where
over DEN
Time
00:26 UTC
Height
during the descent
Aircraft
A321
Turbulence
no below 10,000 ft

1 more routine reports are on the map.

Winds aloft along the route, and the time en route the forecast for use 02:00–09:00 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 6 forecast points nearest it (ABI, SPS, AMA, GCK, PUB, DEN). 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	210° at 35 kt	−18 kt	18 °C	138 kt	4 h 32 min	1:07 am MDT (07:07 UTC)
6,500 ft	210° at 33 kt	−14 kt	17 °C	134 kt	4 h 40 min	1:15 am MDT (07:15 UTC)
8,500 ft	220° at 27 kt	−6 kt	14 °C	126 kt	4 h 58 min	1:33 am MDT (07:33 UTC)
10,500 ft	230° at 25 kt	−2 kt	11 °C	122 kt	5 h 07 min	1:42 am MDT (07:42 UTC)
12,500 ft	240° at 25 kt	0	7 °C	120 kt	5 h 12 min	1:47 am MDT (07:47 UTC)
14,500 ft	230° at 26 kt	−2 kt	2 °C	122 kt	5 h 07 min	1:42 am MDT (07:42 UTC)
16,500 ft	230° at 27 kt	−4 kt	-2 °C	124 kt	5 h 02 min	1:37 am MDT (07:37 UTC)
18,000 ft FL180	230° at 27 kt	−5 kt	-6 °C	125 kt	5 h	1:35 am MDT (07:35 UTC)
24,000 ft FL240	240° at 35 kt	0	-18 °C	120 kt	5 h 12 min	1:47 am MDT (07:47 UTC)
30,000 ft FL300	240° at 56 kt	+6 kt	-28 °C	114 kt	5 h 29 min	2:04 am MDT (08:04 UTC)
34,000 ft FL340	250° at 52 kt	+13 kt	-37 °C	107 kt	5 h 50 min	2:25 am MDT (08:25 UTC)
39,000 ft FL390	260° at 46 kt	+19 kt	-49 °C	101 kt	6 h 11 min	2:46 am MDT (08:46 UTC)

Based on data from the 12th at 00:00 UTC; valid on the 12th at 06:00 UTC for use 02:00 to 09:00 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; 101 nm from the line		200/31 17°	210/21 15°	240/15 9°	250/14 -4°	250/24 -14°	250/36 -28°	270/35 -38°	290/41 -50°
SPS	used from 149 nm out; 61 nm from the line	200/39	220/28 17°	230/27 12°	240/15 9°	250/15 -4°	250/24 -15°	260/45 -28°	270/43 -39°	280/45 -51°
AMA	used from 248 nm out; 55 nm from the line		210/38	230/29 14°	240/29 7°	220/27 -5°	240/37 -18°	240/66 -28°	250/59 -37°	260/47 -49°
GCK	used from 397 nm out; 91 nm from the line		220/48 21°	230/37 14°	250/30 8°	230/37 -6°	240/37 -20°	240/69 -28°	250/67 -37°	260/58 -48°
PUB	used from 446 nm out; 85 nm from the line			230/25 13°	230/32 6°	220/44 -8°	230/49 -21°	240/70 -28°	240/67 -34°	240/58 -46°
DEN	used from 595 nm out; 15 nm from the line			240/21 14°	250/44 6°	220/49 -8°	220/49 -21°	230/54 -30°	240/57 -35°	240/49 -45°

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	VFR	from the southeast (140°) at 6 knots	10+ mi	none	1,015 ft	8:55 pm CDT (01:55 UTC)
MNZ Hamilton, TX	40 nm out, 4 nm northeast of the line	VFR	from the south-southeast (160°) at 8 knots	10+ mi	none	1,304 ft	02:15 UTC
ETN Eastland, TX	99 nm out, 4 nm south of the line	VFR	from the south-southeast (160°) at 6 knots	10+ mi	none	1,467 ft	02:10 UTC
CDS Childress, TX	238 nm out, 2 nm southwest of the line	VFR	from the south-southeast (150°) at 7 knots	10+ mi	none	1,953 ft	01:53 UTC
PPA Pampa, TX	317 nm out, 6 nm east of the line	VFR	from the south (180°) at 14 knots, gusting to 18	10+ mi	none	3,245 ft	02:10 UTC
EHA Elkhart, KS	407 nm out, 15 nm northeast of the line	VFR	from the south (180°) at 13 knots	10+ mi	none	3,621 ft	02:15 UTC
LAA Lamar, CO	486 nm out, 17 nm northeast of the line	VFR	from the south (190°) at 17 knots, gusting to 25	10+ mi	none	3,705 ft	01:53 UTC
LHX La Junta, CO	506 nm out, 16 nm southwest of the line	VFR	from the southwest (230°) at 6 knots	10+ mi	none	4,228 ft	15:53 UTC
LIC Limon, CO	565 nm out, 19 nm northeast of the line	VFR	from the south-southwest (200°) at 10 knots	10+ mi	none	5,374 ft	01:55 UTC
DEN Denver, CO	destination	VFR Sky: a few clouds at 14,000 feet, a broken layer at 22,000 feet	from the south-southwest (200°) at 14 knots	10+ mi	22,000 ft	5,433 ft	7:53 pm MDT (01:53 UTC)

The highest airport on this list sits at 5,433 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.

At DEN when you get there the forecast at the estimated arrival, 1:07 am MDT (07:07 UTC)

Wind from the south at 11 knots, visibility more than 6 miles, a few clouds at 22,000 feet VFR

The whole forecast for DEN

From Sun 7:00 pm MDT (01:00 UTC): wind from the south at 14 knots, gusting to 21, visibility more than 6 miles, a few clouds at 10,000 feet, a few clouds at 14,000 feet and more above
From Sun 7:00 pm MDT (01:00 UTC): wind from the southwest at 14 knots, gusting to 23, visibility more than 6 miles, a few clouds at 14,000 feet, scattered clouds at 22,000 feet
From Mon 1:00 am MDT (07:00 UTC): wind from the south at 11 knots, visibility more than 6 miles, a few clouds at 22,000 feet
From Mon 9:00 am MDT (15:00 UTC): wind from the southwest at 14 knots, gusting to 21, visibility more than 6 miles, clear skies
From Mon 4:00 pm MDT (22:00 UTC): wind from the south at 9 knots, visibility more than 6 miles, clear skies
From Mon 7:00 pm MDT (01:00 UTC): wind from the northeast at 8 knots, visibility more than 6 miles, clear skies

The forecast for GRK, the departure

From Sun 7:00 pm CDT (00:00 UTC): wind from the south-southeast at 9 knots, scattered clouds at 6,000 feet
Changing between Mon 3:00 am CDT (08:00 UTC) and 4:00 am CDT (09:00 UTC) to: wind from the southeast at 6 knots, a broken layer at 1,500 feet
Changing between Mon 4:00 pm CDT (21:00 UTC) and 5:00 pm CDT (22:00 UTC) to: wind from the south-southeast at 12 knots, a broken layer at 5,000 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 1,500 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 7:03 pm CDT (00:03 UTC), at DEN 6:24 pm MDT (00:24 UTC) (civil twilight ends 6:51 pm MDT (00:51 UTC)). At 120 knots the arrival at DEN is before sunrise there (7:05 am MDT (13:05 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, 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, Denver International.