Morristown Municipal to Patrick Leahy Burlington International MMU → BTV
227 nautical miles (262 statute miles) north on a straight line, true course 014°, about 027° magnetic at the departure end (variation 13W). At 120 knots that is 1 h 17 min at the quickest height in today's winds (34,000 ft, a 57-knot tailwind), arriving about 4:14 am EDT (08:14 UTC), after sunset at the destination. Right now MMU is marginal VFR, wind from the north (010°) at 6 knots; BTV is low 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
- 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 whole route.
- AIRMET TANGO 3W: moderate turbulence above 18,000 ft from 21,000 ft to 33,000 ft. Over the whole route.
- AIRMET SIERRA 4E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the last 158 nm of the route.
- AIRMET ZULU 1C: moderate icing up to 22,000 ft. Over the last 119 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 MMU.
Pilot reports along the route within 50 nm of the line, last three hours, the serious ones first
- B763 at 800 ft, 31 nm east, 1:51 am EDT (05:51 UTC): a broken layer, remarks: bases at at 80,000 ft and tops 1500. At the departure end, 31 nm east of the line.
as filed, and in English
JFK UA /OV JFK 2 MILES SOUTHEAST/TM 0551/FL008/TP B763/SK BKN/RM BASES AT 800 AND TOPS 1500
- Report
- a routine report filed through JFK
- Where
- jfk 2 miles southeast
- Time
- 05:51 UTC
- Height
- at 800 ft
- Aircraft
- B763
- Sky
- a broken layer
- Remarks
- bases at at 80,000 ft and tops 1500
- GA6C descending, 3 nm north, 12:32 am EDT (04:32 UTC): overcast above 1,000 ft, remarks: bases OVC010. 40 nm along the route, 3 nm north of the line.
as filed, and in English
SWF UA /OV SWF 270005/TM 0432/FLDURD/TP GA6C/SK OVC010/RM BASES OVC010
- Report
- a routine report filed through SWF
- Where
- 5 nm west (270°) of SWF
- Time
- 04:32 UTC
- Height
- during the descent
- Aircraft
- GA6C
- Sky
- overcast from 1,000 ft
- Remarks
- bases OVC010
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 3 forecast points nearest it (JFK, ALB, BML). 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 | 220° at 5 kt | −5 kt | 125 kt | 1 h 49 min | 4:46 am EDT (08:46 UTC) | |
| 5,500 ft | 260° at 10 kt | −4 kt | 124 kt | 1 h 50 min | 4:47 am EDT (08:47 UTC) | |
| 7,500 ft | 260° at 10 kt | −4 kt | 9 °C | 124 kt | 1 h 50 min | 4:47 am EDT (08:47 UTC) |
| 9,500 ft | 250° at 10 kt | −6 kt | 5 °C | 126 kt | 1 h 48 min | 4:45 am EDT (08:45 UTC) |
| 11,500 ft | 250° at 14 kt | −8 kt | 3 °C | 128 kt | 1 h 46 min | 4:43 am EDT (08:43 UTC) |
| 13,500 ft | 250° at 19 kt | −10 kt | -2 °C | 130 kt | 1 h 45 min | 4:42 am EDT (08:42 UTC) |
| 15,500 ft | 250° at 25 kt | −12 kt | -5 °C | 132 kt | 1 h 43 min | 4:40 am EDT (08:40 UTC) |
| 17,500 ft | 250° at 31 kt | −15 kt | -9 °C | 135 kt | 1 h 41 min | 4:38 am EDT (08:38 UTC) |
| 18,000 ft FL180 | 250° at 32 kt | −16 kt | -10 °C | 136 kt | 1 h 40 min | 4:37 am EDT (08:37 UTC) |
| 24,000 ft FL240 | 250° at 43 kt | −26 kt | -22 °C | 146 kt | 1 h 33 min | 4:30 am EDT (08:30 UTC) |
| 30,000 ft FL300 | 240° at 63 kt | −46 kt | -34 °C | 166 kt | 1 h 22 min | 4:19 am EDT (08:19 UTC) |
| 34,000 ft FL340 | 240° at 78 kt | −57 kt | -42 °C | 177 kt | 1 h 17 min | 4:14 am EDT (08:14 UTC) |
| 39,000 ft FL390 | 240° at 71 kt | −52 kt | -51 °C | 172 kt | 1 h 19 min | 4:16 am EDT (08:16 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| JFK | used from 0 nm out; 41 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° |
| ALB | used from 49 nm out; 46 nm from the line | 120/9 | 270/8 10° | L/V 5° | 260/9 1° | 260/34 -10° | 250/42 -22° | 240/57 -35° | 240/70 -42° | 240/65 -50° |
| BML | used from 198 nm out; 91 nm from the line | 260/22 | 300/13 8° | 280/13 4° | 260/13 0° | 260/16 -11° | 240/45 -21° | 240/59 -36° | 240/77 -44° | 240/83 -53° |
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 |
|---|---|---|---|---|---|---|---|
| MMU Morristown, NJ | departure | marginal VFR Sky: overcast at 1,100 feet | from the north (010°) at 6 knots | 10+ mi | 1,100 ft | 186 ft | 2:35 am EDT (06:35 UTC) |
| SWF New York, NY | 40 nm out, 6 nm northeast of the line, tower | marginal VFR Sky: scattered clouds at 700 feet, a broken layer at 1,200 feet | from the east (090°) at 6 knots | 7 mi | 1,200 ft | 490 ft | 06:45 UTC |
| POU Poughkeepsie, NY | 49 nm out, 12 nm east of the line, tower | IFR Sky: overcast at 600 feet | from the north (360°) at 4 knots | 10+ mi | 600 ft | 163 ft | 06:53 UTC |
| ALB Albany, NY | 119 nm out, 2 nm northwest of the line, tower | IFR Sky: overcast at 600 feet Weather: light drizzle, mist | from the north (350°) at 5 knots | 3 mi | 600 ft | 284 ft | 06:51 UTC |
| GFL Glens Falls, NY | 158 nm out, 3 nm west of the line | low IFR Sky: a broken layer at 400 feet, overcast at 4,800 feet | calm | 10+ mi | 400 ft | 328 ft | 06:53 UTC |
| BTV Burlington, VT | destination | low IFR Sky: a broken layer at 300 feet, overcast at 2,900 feet Weather: light rain | calm | 10+ mi | 300 ft | 334 ft | 2:54 am EDT (06:54 UTC) |
The highest airport on this list sits at 490 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At BTV when you get there the forecast at the estimated arrival, 4:14 am EDT (08:14 UTC)
Wind from the south at 5 knots, visibility 6 miles, light rain, mist, overcast at 3,500 feet VFR
The whole forecast for BTV
- From Mon 2:00 am EDT (06:00 UTC): wind from the south at 5 knots, visibility 6 miles, light rain, mist, overcast at 3,500 feet
- From Mon 5:00 am EDT (09:00 UTC): wind calm, visibility 6 miles, mist, overcast at 1,400 feet
- From Mon 9:00 am EDT (13:00 UTC): wind calm, visibility more than 6 miles, a broken layer at 2,100 feet
- From Mon 1:00 pm EDT (17:00 UTC): wind light and variable, visibility more than 6 miles, a broken layer at 5,000 feet
- From Mon 5:00 pm EDT (21:00 UTC): wind from the north at 6 knots, visibility 6 miles, mist, overcast at 1,900 feet
Temporary flight restrictions on the line or within 25 nm of it
- 5/2811 NEW YORK, NY, Monday, October 20, 2025 through Tuesday, October 20, 2026 Local 19 nm from the route, at the departure end · security · until 20 October · ZNY
Daylight
Sunset at MMU 6:22 pm EDT (22:22 UTC), at BTV 6:13 pm EDT (22:13 UTC) (civil twilight ends 6:43 pm EDT (22:43 UTC)). At 120 knots the arrival at BTV is before sunrise there (7:03 am EDT (11:03 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: Morristown Municipal, Patrick Leahy Burlington International.