Greenbrier Valley Airport to Morristown Municipal LWB → MMU
329 nautical miles (379 statute miles) northeast on a straight line, true course 056°, about 064° magnetic at the departure end (variation 8W). At 120 knots that is 1 h 57 min at the quickest height in today's winds (34,000 ft, a 49-knot tailwind), arriving about 5:40 am EDT (09:40 UTC), after sunset at the destination. Right now LWB is marginal VFR, wind from the west (280°) at 6 knots; MMU 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: 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
- SIGMET E25E: thunderstorms (a convective SIGMET) up to 35,000 ft, moving from the southwest at 20 knots, until 4:55 am EDT (08:55 UTC). Over the route from 249 to 249 nm out.
as issued
WSUS31 KKCI 120655 MKCE WST 120655 CONVECTIVE SIGMET 25E VALID UNTIL 0855Z RI NY NJ PA DE MD AND MA RI NJ NY CT CSTL WTRS FROM 30SSE PVD-60SSE ACK-110SSE HTO-40N SBY-30SSW ETX-30SSE PVD AREA EMBD TS MOV FROM 24020KT. TOPS TO FL350.
- AIRMET SIERRA 3E: low cloud or poor visibility (IFR conditions) (due to ceilings below 1,000 ft, visibility below 3 miles, precipitation, mist), from 2:00 am EDT (06:00 UTC). Over the whole route.
- AIRMET TANGO 5W: moderate turbulence below 18,000 ft (due to mountain wave) up to 10,000 ft, from 2:00 am EDT (06:00 UTC). Over the first 60 nm of the route.
- AIRMET SIERRA 4E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist), from 2:00 am EDT (06:00 UTC). Over the first 130 nm of the route.
- AIRMET TANGO 3W: moderate turbulence above 18,000 ft from 21,000 ft to 33,000 ft, from 2:00 am EDT (06:00 UTC). Over the last 249 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 LWB.
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 02:00–09:00 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 6 forecast points nearest it (ROA, EKN, PSB, ACY, AVP, JFK). 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 | 270° at 12 kt | −10 kt | 130 kt | 2 h 32 min | 6:15 am EDT (10:15 UTC) | |
| 5,500 ft | 320° at 14 kt | −2 kt | 12 °C | 122 kt | 2 h 42 min | 6:25 am EDT (10:25 UTC) |
| 7,500 ft | 300° at 15 kt | −5 kt | 10 °C | 125 kt | 2 h 38 min | 6:21 am EDT (10:21 UTC) |
| 9,500 ft | 290° at 15 kt | −9 kt | 7 °C | 129 kt | 2 h 33 min | 6:16 am EDT (10:16 UTC) |
| 11,500 ft | 290° at 13 kt | −8 kt | 4 °C | 128 kt | 2 h 34 min | 6:17 am EDT (10:17 UTC) |
| 13,500 ft | 290° at 15 kt | −9 kt | 0 °C | 129 kt | 2 h 33 min | 6:16 am EDT (10:16 UTC) |
| 15,500 ft | 280° at 17 kt | −12 kt | -4 °C | 132 kt | 2 h 30 min | 6:13 am EDT (10:13 UTC) |
| 17,500 ft | 280° at 19 kt | −14 kt | -9 °C | 134 kt | 2 h 27 min | 6:10 am EDT (10:10 UTC) |
| 18,000 ft FL180 | 280° at 20 kt | −14 kt | -10 °C | 134 kt | 2 h 27 min | 6:10 am EDT (10:10 UTC) |
| 24,000 ft FL240 | 270° at 28 kt | −24 kt | -22 °C | 144 kt | 2 h 17 min | 6:00 am EDT (10:00 UTC) |
| 30,000 ft FL300 | 250° at 38 kt | −36 kt | -34 °C | 156 kt | 2 h 07 min | 5:50 am EDT (09:50 UTC) |
| 34,000 ft FL340 | 250° at 50 kt | −49 kt | -40 °C | 169 kt | 1 h 57 min | 5:40 am EDT (09:40 UTC) |
| 39,000 ft FL390 | 250° at 46 kt | −45 kt | -48 °C | 165 kt | 2 h | 5:43 am EDT (09:43 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| ROA | used from 0 nm out; 46 nm from the line | 310/29 | 330/31 13° | 340/28 7° | 330/25 3° | 310/32 -8° | 300/32 -22° | 290/32 -31° | 270/35 -38° | 270/32 -47° |
| EKN | used from 50 nm out; 42 nm from the line | 330/21 12° | 330/25 7° | 350/22 2° | 330/24 -10° | 310/27 -21° | 320/33 -35° | 290/31 -39° | 290/34 -47° | |
| PSB | used from 150 nm out; 93 nm from the line | 360/13 13° | 330/14 7° | 300/11 3° | 290/12 -11° | 240/23 -23° | 270/25 -36° | 250/34 -40° | 250/45 -48° | |
| ACY | used from 199 nm out; 87 nm from the line | 220/19 | 220/18 14° | 210/36 9° | 210/35 5° | 220/36 -8° | 240/49 -21° | 220/90 -31° | 230/103 -40° | 230/81 -50° |
| AVP | used from 249 nm out; 62 nm from the line | 150/5 | 350/13 12° | 270/20 8° | 260/17 4° | 260/25 -11° | 240/31 -22° | 240/54 -35° | 230/61 -41° | 240/55 -49° |
| JFK | used from 299 nm out; 42 nm from the line | 250/18 | 250/23 14° | 240/33 9° | 240/33 4° | 240/38 -10° | 240/45 -21° | 230/86 -32° | 230/102 -40° | 230/84 -51° |
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 |
|---|---|---|---|---|---|---|---|
| LWB Lewisburg, WV | departure | marginal VFR Sky: overcast at 1,900 feet | from the west (280°) at 6 knots | 10+ mi | 1,900 ft | 2,301 ft | 1:55 am EDT (05:55 UTC) |
| HSP Hot Springs, VA | 30 nm out, 11 nm south of the line | reported, no category | from the west (280°) at 18 knots, gusting to 22 | 0.25 mi | none | 3,792 ft | 06:15 UTC |
| VBW Bridgewater, VA | 70 nm out, 13 nm southeast of the line | VFR Sky: a broken layer at 6,000 feet | calm | 7 mi | 6,000 ft | 1,165 ft | 07:35 UTC |
| FRR Front Royal, VA | 120 nm out, 3 nm southeast of the line | marginal VFR Sky: overcast at 1,400 feet | calm | 10+ mi | 1,400 ft | 703 ft | 07:35 UTC |
| JYO Leesburg, VA | 150 nm out, 13 nm southeast of the line, tower | IFR Sky: overcast at 600 feet Weather: light rain | from the north-northwest (340°) at 14 knots | 10+ mi | 600 ft | 389 ft | 07:35 UTC |
| FDK Frederick, MD | 170 nm out, 0 nm northeast of the line, tower | marginal VFR Sky: overcast at 1,300 feet | from the north (010°) at 8 knots | 10+ mi | 1,300 ft | 308 ft | 07:35 UTC |
| LNS Lancaster, PA | 239 nm out, 11 nm northwest of the line, tower | marginal VFR Sky: overcast at 1,000 feet | from the north-northeast (020°) at 7 knots | 10+ mi | 1,000 ft | 402 ft | 07:11 UTC |
| RDG Reading, PA | 259 nm out, 15 nm northwest of the line, tower | IFR Sky: overcast at 700 feet Weather: mist | from the north-northeast (020°) at 5 knots | 4 mi | 700 ft | 343 ft | 07:34 UTC |
| ABE Allentown, PA | 289 nm out, 17 nm northwest of the line, tower | marginal VFR Sky: overcast at 1,300 feet | from the northeast (050°) at 8 knots | 10+ mi | 1,300 ft | 393 ft | 06:51 UTC |
| MMU Morristown, NJ | destination | IFR Sky: overcast at 900 feet | calm | 10+ mi | 900 ft | 186 ft | 3:35 am EDT (07:35 UTC) |
The highest airport on this list sits at 3,792 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At MMU when you get there the forecast at the estimated arrival, 5:40 am EDT (09:40 UTC)
MMU has no terminal forecast; use the nearest airport that does.
The forecast for LWB, the departure
- From Mon 2:00 am EDT (06:00 UTC): wind from the west at 9 knots, gusting to 19, visibility 5 miles, mist, a broken layer at 800 feet
- At times between Mon 2:00 am EDT (06:00 UTC) and 6:00 am EDT (10:00 UTC): visibility 2 miles, light rain showers, mist, overcast at 200 feet
- From Mon 6:00 am EDT (10:00 UTC): wind from the west-northwest at 11 knots, gusting to 23, visibility 3 miles, mist, scattered clouds at 400 feet
- At times between Mon 6:00 am EDT (10:00 UTC) and 8:00 am EDT (12:00 UTC): visibility 2 miles, light rain showers, mist, overcast at 400 feet
- From Mon 8:00 am EDT (12:00 UTC): wind from the west-northwest at 11 knots, gusting to 26, visibility 3 miles, mist, a broken layer at 500 feet
- From Mon 11:00 am EDT (15:00 UTC): wind from the northwest at 11 knots, gusting to 22, visibility more than 6 miles, a broken layer at 600 feet
- From Mon 1:00 pm EDT (17:00 UTC): wind from the west-northwest at 10 knots, gusting to 20, visibility more than 6 miles, scattered clouds at 1,200 feet
- From Mon 5:00 pm EDT (21:00 UTC): wind from the west at 6 knots, visibility more than 6 miles, scattered clouds at 15,000 feet
Temporary flight restrictions on the line or within 25 nm of it
- 6/8600 Sterling, VA, Monday, October 12, 2026 through Monday, October 12, 2026 Local 14 nm from the route, 160 nm along the route · a VIP movement · today · ZDC
- 4/9383 WASHINGTON, DC., USA 22 nm from the route, 170 nm along the route · security · ZDC
- 6/8800 Baltimore, MD, Saturday, October 17, 2026 through Sunday, October 18, 2026 UTC 25 nm from the route, 199 nm along the route · drones kept away from a public gathering · starts Saturday 17 October · ZDC
- 5/2811 NEW YORK, NY, Monday, October 20, 2025 through Tuesday, October 20, 2026 Local 19 nm from the route, at the destination end · security · until 20 October · ZNY
Daylight
Sunset at LWB 6:48 pm EDT (22:48 UTC), at MMU 6:22 pm EDT (22:22 UTC) (civil twilight ends 6:49 pm EDT (22:49 UTC)). At 120 knots the arrival at MMU is before sunrise there (7:05 am EDT (11:05 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
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: Greenbrier Valley Airport, Morristown Municipal.