Robert Gray Army Airfield to Baltimore/Washington International Thurgood Marshall GRK → BWI
1,144 nautical miles (1,316 statute miles) northeast on a straight line, true course 059°, about 055° magnetic at the departure end (variation 4E). At 120 knots that is 8 h 36 min at the quickest height in today's winds (34,000 ft, a 13-knot tailwind), arriving about 4:55 pm EDT (20:55 UTC). 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: 4 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 last 527 nm of the route.
- AIRMET SIERRA 4E: mountains obscured by cloud (due to mountains obscured by clouds, mist). Over the route from 726 to 1044 nm out.
- AIRMET TANGO 3W: moderate turbulence below 18,000 ft (due to mountain wave) up to 6,000 ft. Over the route from 925 to 1104 nm out.
- AIRMET TANGO 3W: moderate turbulence above 18,000 ft from 24,000 ft to 33,000 ft. Over the last 189 nm of the route.
- 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). Near the route, at the destination end.
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
Not fetched just now.
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 11 forecast points nearest it (CLL, DAL, SHV, LIT, MEM, BNA, TYS, TRI, CRW, EKN, RIC). 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 | 260° at 12 kt | −12 kt | 132 kt | 8 h 40 min | 4:59 pm EDT (20:59 UTC) | |
| 5,500 ft | 290° at 11 kt | −9 kt | 10 °C | 129 kt | 8 h 52 min | 5:11 pm EDT (21:11 UTC) |
| 7,500 ft | 300° at 13 kt | −8 kt | 12 °C | 128 kt | 8 h 56 min | 5:15 pm EDT (21:15 UTC) |
| 9,500 ft | 310° at 15 kt | −7 kt | 9 °C | 127 kt | 9 h | 5:19 pm EDT (21:19 UTC) |
| 11,500 ft | 310° at 16 kt | −7 kt | 6 °C | 127 kt | 9 h | 5:19 pm EDT (21:19 UTC) |
| 13,500 ft | 310° at 17 kt | −8 kt | 2 °C | 128 kt | 8 h 56 min | 5:15 pm EDT (21:15 UTC) |
| 15,500 ft | 310° at 19 kt | −9 kt | -2 °C | 129 kt | 8 h 52 min | 5:11 pm EDT (21:11 UTC) |
| 17,500 ft | 310° at 21 kt | −10 kt | -6 °C | 130 kt | 8 h 48 min | 5:07 pm EDT (21:07 UTC) |
| 18,000 ft FL180 | 310° at 21 kt | −11 kt | -7 °C | 131 kt | 8 h 44 min | 5:03 pm EDT (21:03 UTC) |
| 24,000 ft FL240 | 310° at 24 kt | −10 kt | -18 °C | 130 kt | 8 h 48 min | 5:07 pm EDT (21:07 UTC) |
| 30,000 ft FL300 | 320° at 39 kt | −11 kt | -32 °C | 131 kt | 8 h 44 min | 5:03 pm EDT (21:03 UTC) |
| 34,000 ft FL340 | 320° at 46 kt | −13 kt | -40 °C | 133 kt | 8 h 36 min | 4:55 pm EDT (20:55 UTC) |
| 39,000 ft FL390 | 320° at 39 kt | −10 kt | -51 °C | 130 kt | 8 h 48 min | 5:07 pm EDT (21:07 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; 68 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° |
| DAL | used from 99 nm out; 72 nm from the line | 190/30 | 200/28 18° | 220/18 13° | 250/13 8° | 240/24 -6° | 270/20 -14° | 270/35 -29° | 290/34 -39° | 310/41 -51° |
| SHV | used from 149 nm out; 54 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° |
| LIT | used from 298 nm out; 61 nm from the line | 250/22 | 250/25 18° | 240/23 12° | 240/20 7° | 250/17 -6° | 260/25 -17° | 300/45 -29° | 300/49 -40° | 310/43 -51° |
| MEM | used from 398 nm out; 42 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° |
| BNA | used from 547 nm out; 63 nm from the line | 300/20 | 300/14 15° | 300/14 10° | 300/13 4° | 310/22 -5° | 280/24 -18° | 310/37 -33° | 310/50 -41° | 320/49 -51° |
| TYS | used from 696 nm out; 68 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° |
| TRI | used from 796 nm out; 58 nm from the line | 340/25 11° | 350/37 9° | 350/34 6° | 340/39 -7° | 340/43 -19° | 340/55 -32° | 330/58 -42° | 320/37 -50° | |
| CRW | used from 845 nm out; 53 nm from the line | 320/17 | 340/23 12° | 340/32 8° | 340/35 4° | 330/40 -7° | 340/45 -20° | 340/57 -34° | 340/64 -42° | 320/38 -50° |
| EKN | used from 945 nm out; 44 nm from the line | 330/20 10° | 350/29 7° | 340/32 2° | 340/44 -8° | 350/50 -21° | 350/63 -35° | 340/69 -40° | 330/42 -50° | |
| RIC | used from 1094 nm out; 92 nm from the line | 350/34 | 340/27 12° | 340/36 8° | 330/31 3° | 310/32 -9° | 320/34 -21° | 300/37 -34° | 290/37 -39° | 290/42 -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 | no report just now | 1,015 ft | ||||
| CNW Waco, TX | 50 nm out, 10 nm northwest of the line, tower | no report just now | 470 ft | ||||
| TYR Tyler, TX | 149 nm out, 5 nm west of the line, tower | no report just now | 543 ft | ||||
| AGO Magnolia, AR | 269 nm out, 4 nm south of the line | no report just now | 319 ft | ||||
| UTA Tunica, MS | 438 nm out, 8 nm northwest of the line | no report just now | 194 ft | ||||
| OLV Olive Branch, MS | 467 nm out, 10 nm northwest of the line, tower | no report just now | 401 ft | ||||
| MQY Smyrna, TN | 637 nm out, 3 nm southeast of the line, tower | no report just now | 543 ft | ||||
| BYL Williamsburg, KY | 756 nm out, 7 nm southeast of the line | no report just now | 1,177 ft | ||||
| EBD Williamson, WV | 875 nm out, 6 nm northwest of the line | no report just now | 1,883 ft | ||||
| LWB Lewisburg, WV | 955 nm out, 15 nm south of the line, tower | no report just now | 2,301 ft | ||||
| IAD Washington, DC | 1104 nm out, 1 nm southeast of the line, tower | no report just now | 312 ft | ||||
| BWI Baltimore, MD | destination | no report just now | 143 ft |
The highest airport on this list sits at 2,301 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At BWI when you get there the forecast at the estimated arrival, 4:55 pm EDT (20:55 UTC)
BWI has no terminal forecast; use the nearest airport that does.
Temporary flight restrictions on the line or within 25 nm of it
- 6/0543 MCGREGOR, TX 6 nm from the route, at the departure end · security · ZFW
- 6/8926 Tyler, TX, Tuesday, October 13, 2026 Local 0 nm from the route, 149 nm along the route · a VIP movement · starts tomorrow · ZFW
- 6/0708 Goodlettsville, TN, Saturday, August 1, 2026 through Sunday, August 1, 2027 UTC 19 nm from the route, 637 nm along the route · security · until 1 August · ZME
- 4/9383 WASHINGTON, DC., USA on the route, at the destination end · security · ZDC
- 6/8600 Sterling, VA, Monday, October 12, 2026 through Monday, October 12, 2026 Local on the route, at the destination end · a VIP movement · today · ZDC
- 6/8800 Baltimore, MD, Saturday, October 17, 2026 through Sunday, October 18, 2026 UTC 6 nm from the route, at the destination end · drones kept away from a public gathering · starts Saturday 17 October · ZDC
Daylight
Sunset at GRK 7:02 pm CDT (00:02 UTC), at BWI 6:32 pm EDT (22:32 UTC) (civil twilight ends 6:59 pm EDT (22:59 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
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, Baltimore/Washington International Thurgood Marshall.