Plan a flight · Mon 6:25 am CDT (11:25 UTC)

Robert Gray Army Airfield to Raleigh-Durham International GRK → RDU

995 nautical miles (1,144 statute miles) east on a straight line, true course 068°, about 064° magnetic at the departure end (variation 4E). At 120 knots that is 7 h 19 min at the quickest height in today's winds (30,000 ft, a 16-knot tailwind), arriving about 2:44 pm EDT (18:44 UTC). Right now GRK is marginal VFR, wind from the southeast (140°) at 7 knots; RDU is VFR, wind from the west-southwest (250°) at 5 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

AIRMET SIERRA 3E: low cloud or poor visibility (IFR conditions) (due to ceilings below 1,000 ft, visibility below 3 miles, precipitation, mist). Over the route from 696 to 756 nm out.
AIRMET TANGO 5W: moderate turbulence above 18,000 ft (due to mountain wave) from 29,000 ft to 40,000 ft. Over the route from 706 to 865 nm out.
AIRMET TANGO 3W: moderate turbulence below 18,000 ft (due to mountain wave) up to 6,000 ft. Over the route from 706 to 865 nm out.
AIRMET SIERRA 4E: mountains obscured by cloud (due to mountains obscured by clouds, mist). Over the route from 716 to 796 nm out.
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 825 to 975 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 GRK.

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

E75L at 30,000 ft, 20 nm north, 5:51 am CDT (10:51 UTC): moderate turbulence above 30,000 ft. At the destination end, 20 nm north of the line.
as filed, and in English
```
RDU UA /OV RDU360020/TM 1051/FLF300/TP E75L/TB MOD 300
```
Report
a routine report filed through RDU
Where
20 nm north (360°) of RDU
Time
10:51 UTC
Height
at F300
Aircraft
E75L
Turbulence
moderate at 30,000 ft
C56X at 1,000 ft, 23 nm north, 6:04 am CDT (11:04 UTC): remarks: during the climb runway 20 departure. 676 nm along the route, 23 nm north of the line.
as filed, and in English
```
CHA UA /OV CHA/TM 1104/FL010/TP C56X/SK TOP010/RM DURC. RY 20 DEPARTURE
```
Report
a routine report filed through CHA
Where
over CHA
Time
11:04 UTC
Height
at 1,000 ft
Aircraft
C56X
Sky
TOP010
Remarks
during the climb runway 20 departure
CRJ9 at 1,000 ft, 23 nm north, 5:15 am CDT (10:15 UTC): remarks: during the climb runway 20 departure. 676 nm along the route, 23 nm north of the line.
as filed, and in English
```
CHA UA /OV CHA/TM 1015/FL010/TP CRJ9/SK TOP010/RM DURC. RY 20 DEPARTURE
```
Report
a routine report filed through CHA
Where
over CHA
Time
10:15 UTC
Height
at 1,000 ft
Aircraft
CRJ9
Sky
TOP010
Remarks
during the climb runway 20 departure
B38M at 35,000 ft, 4 nm northeast, 5:04 am CDT (10:04 UTC): light turbulence, remarks: ztlfd 39. 696 nm along the route, 4 nm northeast of the line.
as filed, and in English
```
ATL UA /OV GQO110025/TM 1004/FL350/TP B38M/TB LGT/RM ZTLFD 39
```
Report
a routine report filed through ATL
Where
25 nm east (110°) of GQO
Time
10:04 UTC
Height
at 35,000 ft
Aircraft
B38M
Turbulence
light
Remarks
ztlfd 39
A319 at 19,000 ft, 21 nm south, 5:42 am CDT (10:42 UTC): no turbulence, remarks: ztlfd 49. 766 nm along the route, 21 nm south of the line.
as filed, and in English
```
ATL UA /OV ODF/TM 1042/FL190/TP A319/TB NEG/RM ZTLFD 49
```
Report
a routine report filed through ATL
Where
over ODF
Time
10:42 UTC
Height
at 19,000 ft
Aircraft
A319
Turbulence
none
Remarks
ztlfd 49
BCS3 at 35,000 ft, 17 nm north, 5:57 am CDT (10:57 UTC): remarks: mountain wave + 10 knots ztlfd 28. 905 nm along the route, 17 nm north of the line.
as filed, and in English
```
ATL UA /OV BZM100026/TM 1057/FL350/TP BCS3/RM MOUNTAIN WAVE +/- 10KTS ZTLFD 28
```
Report
a routine report filed through ATL
Where
26 nm east (100°) of BZM
Time
10:57 UTC
Height
at 35,000 ft
Aircraft
BCS3
Remarks
mountain wave + 10 knots ztlfd 28

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 10 forecast points nearest it (CLL, SHV, JAN, MEM, BHM, HSV, ATL, TYS, GSP, RDU). A plus sign is a headwind, a minus sign a tailwind.

Height	Average wind	Head- or tailwind	Temperature	Ground speed	Time en route	Arrival
3,500 ft	290° at 10 kt	−9 kt		129 kt	7 h 43 min	3:08 pm EDT (19:08 UTC)
5,500 ft	300° at 9 kt	−7 kt		127 kt	7 h 50 min	3:15 pm EDT (19:15 UTC)
7,500 ft	310° at 11 kt	−7 kt	13 °C	127 kt	7 h 50 min	3:15 pm EDT (19:15 UTC)
9,500 ft	310° at 13 kt	−7 kt	10 °C	127 kt	7 h 50 min	3:15 pm EDT (19:15 UTC)
11,500 ft	310° at 14 kt	−8 kt	7 °C	128 kt	7 h 46 min	3:11 pm EDT (19:11 UTC)
13,500 ft	310° at 16 kt	−9 kt	3 °C	129 kt	7 h 43 min	3:08 pm EDT (19:08 UTC)
15,500 ft	310° at 17 kt	−10 kt	-1 °C	130 kt	7 h 39 min	3:04 pm EDT (19:04 UTC)
17,500 ft	310° at 19 kt	−11 kt	-5 °C	131 kt	7 h 36 min	3:01 pm EDT (19:01 UTC)
18,000 ft FL180	310° at 20 kt	−11 kt	-6 °C	131 kt	7 h 36 min	3:01 pm EDT (19:01 UTC)
24,000 ft FL240	310° at 19 kt	−10 kt	-17 °C	130 kt	7 h 39 min	3:04 pm EDT (19:04 UTC)
30,000 ft FL300	320° at 36 kt	−16 kt	-31 °C	136 kt	7 h 19 min	2:44 pm EDT (18:44 UTC)
34,000 ft FL340	330° at 38 kt	−11 kt	-40 °C	131 kt	7 h 36 min	3:01 pm EDT (19:01 UTC)
39,000 ft FL390	320° at 35 kt	−11 kt	-50 °C	131 kt	7 h 36 min	3:01 pm EDT (19:01 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
CLL	used from 0 nm out; 65 nm from the line	180/24	170/21 19°	180/10 14°	230/7 8°	230/16 -6°	260/20 -13°	290/23 -29°	320/21 -39°	340/35 -51°
SHV	used from 149 nm out; 47 nm from the line	210/20	210/20 18°	230/20 11°	240/16 7°	270/17 -7°	250/11 -15°	300/34 -30°	310/34 -40°	320/36 -51°
JAN	used from 298 nm out; 99 nm from the line	240/10	260/15 18°	280/10 11°	290/6 6°	290/15 -5°	300/15 -17°	320/35 -30°	330/38 -40°	330/39 -51°
MEM	used from 448 nm out; 92 nm from the line	250/19	260/19 17°	270/20 12°	270/16 6°	270/21 -6°	290/27 -17°	300/37 -30°	300/49 -40°	310/40 -51°
BHM	used from 497 nm out; 71 nm from the line	310/19	310/15 16°	320/19 11°	330/15 5°	330/23 -5°	320/14 -18°	320/36 -32°	330/44 -40°	340/36 -51°
HSV	used from 547 nm out; 32 nm from the line	300/20	310/14 16°	310/18 10°	310/15 4°	320/19 -5°	290/16 -18°	320/36 -32°	320/47 -41°	330/42 -50°
ATL	used from 646 nm out; 72 nm from the line	330/32	340/36 17°	350/34 10°	340/25 6°	330/27 -6°	350/35 -18°	330/49 -32°	340/47 -41°	340/27 -51°
TYS	used from 696 nm out; 59 nm from the line	330/16	350/32 14°	350/37 9°	340/30 5°	330/28 -6°	340/36 -19°	330/40 -33°	330/51 -41°	330/36 -51°
GSP	used from 746 nm out; 52 nm from the line	340/30	360/24 13°	350/29 10°	340/33 6°	340/40 -7°	350/44 -19°	340/59 -31°	350/55 -41°	300/29 -50°
RDU	used from 895 nm out; 75 nm from the line	330/30	340/24 12°	330/26 7°	320/30 3°	330/39 -8°	310/30 -20°	300/33 -33°	310/34 -39°	310/41 -47°

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: scattered clouds at 2,400 feet, a broken layer at 3,000 feet	from the southeast (140°) at 7 knots	9 mi	3,000 ft	1,015 ft	6:15 am CDT (11:15 UTC)
CNW Waco, TX	50 nm out, 17 nm northwest of the line, tower	VFR	from the southeast (130°) at 3 knots	10+ mi	none	470 ft	11:15 UTC
GGG Longview, TX	179 nm out, 16 nm northwest of the line, tower	VFR	from the south (180°) at 5 knots	10+ mi	none	365 ft	10:53 UTC
SHV Shreveport, LA	219 nm out, 5 nm north of the line, tower	VFR	from the south-southeast (160°) at 5 knots	10+ mi	none	257 ft	10:56 UTC
GLH Greenville, MS	378 nm out, 16 nm northwest of the line, tower	VFR	from the southwest (230°) at 5 knots	10+ mi	none	130 ft	10:53 UTC
GWO Greenwood, MS	418 nm out, 3 nm north of the line, tower	VFR	from the south (190°) at 3 knots	10+ mi	none	162 ft	10:53 UTC
CMD Cullman, AL	587 nm out, 1 nm northwest of the line	VFR	from the northeast (040°) at 3 knots	10+ mi	none	969 ft	11:15 UTC
HSV Huntsville, AL	597 nm out, 21 nm north of the line, tower	VFR Sky: a few clouds at 15,000 feet	calm	10+ mi	none	628 ft	10:53 UTC
DZJ Blairsville, GA	736 nm out, 5 nm southwest of the line	VFR Sky: a broken layer at 3,500 feet	from the west-northwest (290°) at 3 knots	10+ mi	3,500 ft	1,906 ft	11:15 UTC
JQF Concord, NC	895 nm out, 9 nm south of the line, tower	VFR	calm	10+ mi	none	704 ft	10:50 UTC
VUJ Albemarle, NC	925 nm out, 14 nm south of the line, tower	VFR	from the west (260°) at 4 knots	10+ mi	none	609 ft	11:15 UTC
RDU Raleigh/Durham, NC	destination	VFR Sky: a few clouds at 7,000 feet	from the west-southwest (250°) at 5 knots	10+ mi	none	435 ft	6:51 am EDT (10:51 UTC)

The highest airport on this list sits at 1,906 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.

At RDU when you get there the forecast at the estimated arrival, 2:44 pm EDT (18:44 UTC)

Wind from the northwest at 11 knots, gusting to 19, visibility more than 6 miles, scattered clouds at 3,000 feet, a broken layer at 4,500 feet VFR

The whole forecast for RDU

From Mon 2:00 am EDT (06:00 UTC): wind from the west-southwest at 10 knots, visibility more than 6 miles, a few clouds at 2,500 feet, a broken layer at 4,000 feet and more above
From Mon 10:00 am EDT (14:00 UTC): wind from the northwest at 11 knots, gusting to 19, visibility more than 6 miles, scattered clouds at 3,000 feet, a broken layer at 4,500 feet
At times between Mon 10:00 am EDT (14:00 UTC) and 1:00 pm EDT (17:00 UTC): wind from the northwest at 12 knots, gusting to 22, a broken layer at 3,000 feet
From Mon 5:30 pm EDT (21:30 UTC): wind from the northwest at 3 knots, visibility more than 6 miles, scattered clouds at 25,000 feet

The forecast for GRK, the departure

From Mon 3:00 am CDT (08:00 UTC): wind from the south-southeast at 9 knots, 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

6/0543 MCGREGOR, TX 11 nm from the route, at the departure end · security · ZFW
6/8926 Tyler, TX, Tuesday, October 13, 2026 Local 22 nm from the route, 139 nm along the route · a VIP movement · starts tomorrow · ZFW

Daylight

Sunset at GRK 7:02 pm CDT (00:02 UTC), at RDU 6:43 pm EDT (22:43 UTC) (civil twilight ends 7:09 pm EDT (23:09 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 lower Mississippi valley · loop National Weather Service

Radar now, the Southeast · 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, Raleigh-Durham International.