Plan a flight · Tue 4:37 am EDT (08:37 UTC)

Morristown Municipal to Washington Dulles International MMU → IAD

179 nautical miles (206 statute miles) southwest on a straight line, true course 233°, about 246° magnetic at the departure end (variation 13W). At 120 knots that is 1 h 31 min at the quickest height in today's winds (30,000 ft, a 2-knot headwind), arriving about 6:08 am EDT (10:08 UTC), after sunset at the destination. Right now MMU is low IFR, wind calm; IAD is VFR, 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: 10 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 6E: low cloud or poor visibility (IFR conditions) (due to ceilings below 1,000 ft, visibility below 3 miles, mist, fog). Over the first 129 nm of the route.

Turbulence No turbulence warning in force along the route. No pilot has reported turbulence near the line in the last three hours. The government's turbulence forecast map ↗

Icing No icing warning in force along the route. No pilot has reported icing near the line in the last three hours. The freezing level is about 13,500 ft (from the winds-aloft temperatures), so icing is possible in cloud above that. The government's icing forecast map ↗

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

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 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 3 forecast points nearest it (JFK, ACY, 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
4,500 ft	270° at 7 kt	+5 kt		115 kt	1 h 33 min	6:10 am EDT (10:10 UTC)
6,500 ft	280° at 14 kt	+9 kt	12 °C	111 kt	1 h 37 min	6:14 am EDT (10:14 UTC)
8,500 ft	280° at 19 kt	+12 kt	8 °C	108 kt	1 h 39 min	6:16 am EDT (10:16 UTC)
10,500 ft	290° at 20 kt	+9 kt	4 °C	111 kt	1 h 37 min	6:14 am EDT (10:14 UTC)
12,500 ft	310° at 21 kt	+6 kt	2 °C	114 kt	1 h 34 min	6:11 am EDT (10:11 UTC)
14,500 ft	310° at 20 kt	+5 kt	-2 °C	115 kt	1 h 33 min	6:10 am EDT (10:10 UTC)
16,500 ft	310° at 20 kt	+5 kt	-7 °C	115 kt	1 h 33 min	6:10 am EDT (10:10 UTC)
18,000 ft FL180	310° at 19 kt	+5 kt	-10 °C	115 kt	1 h 33 min	6:10 am EDT (10:10 UTC)
24,000 ft FL240	310° at 26 kt	+4 kt	-21 °C	116 kt	1 h 33 min	6:10 am EDT (10:10 UTC)
30,000 ft FL300	320° at 30 kt	+2 kt	-36 °C	118 kt	1 h 31 min	6:08 am EDT (10:08 UTC)
34,000 ft FL340	290° at 33 kt	+15 kt	-39 °C	105 kt	1 h 42 min	6:19 am EDT (10:19 UTC)
39,000 ft FL390	300° at 41 kt	+14 kt	-48 °C	106 kt	1 h 41 min	6:18 am EDT (10:18 UTC)

Based on data from the 13th at 06:00 UTC; valid on the 13th 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
JFK	used from 0 nm out; 49 nm from the line	210/6	280/17 13°	280/25 6°	300/27 3°	300/21 -10°	320/22 -22°	340/31 -37°	290/34 -41°	290/43 -49°
ACY	used from 50 nm out; 62 nm from the line	L/V	280/15 13°	280/20 6°	310/19 3°	310/19 -10°	310/27 -21°	310/30 -37°	290/31 -39°	300/38 -48°
RIC	used from 149 nm out; 96 nm from the line	L/V	L/V 13°	290/12 9°	310/17 4°	310/19 -9°	310/28 -21°	310/35 -34°	310/38 -38°	320/51 -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
MMU Morristown, NJ	departure	low IFR Sky: a broken layer at 200 feet Weather: mist	calm	1 mi	200 ft	186 ft	4:15 am EDT (08:15 UTC)
TTN Trenton, NJ	30 nm out, 14 nm southeast of the line, tower	VFR	calm	10+ mi	none	212 ft	07:53 UTC
PNE Philadelphia, PA	50 nm out, 18 nm southeast of the line, tower	VFR	from the west (260°) at 4 knots	10+ mi	none	119 ft	07:54 UTC
MTN Baltimore, MD	129 nm out, 13 nm southeast of the line, tower	IFR Sky: sky obscured at 700 feet Weather: mist	calm	1.25 mi	700 ft	22 ft	08:15 UTC
BWI Baltimore, MD	139 nm out, 13 nm southeast of the line, tower	VFR	from the west-southwest (240°) at 4 knots	10+ mi	none	143 ft	07:54 UTC
IAD Washington, DC	destination	VFR	calm	7 mi	none	312 ft	3:52 am EDT (07:52 UTC)

The highest airport on this list sits at 312 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.

The codes as issued, and in English, for every airport in the table

MMU Morristown, NJ

the observation as issued, and in English

METAR KMMU 130815Z AUTO 00000KT 1SM BR BKN002 10/10 A2995 RMK AO2 VIS 1/2V5

METAR: a routine hourly observation
KMMU: the station, KMMU
130815Z: observed 4:15 am EDT (08:15 UTC)
AUTO: fully automated report, nobody checked it
00000KT: wind calm
1SM: visibility 1 mile
BR: mist
BKN002: a broken layer at 200 feet
10/10: temperature 10 °C (50 °F), dew point 10 °C (50 °F)
A2995: altimeter setting 29.95 inches of mercury
RMK: remarks follow
AO2: automated station with a precipitation sensor
VIS 1/2V5: visibility varying between ½ mile and 5 miles

TTN Trenton, NJ