Ogdensburg International to Chippewa County International OGS → CIU
391 nautical miles (450 statute miles) west on a straight line, true course 287°, about 300° magnetic at the departure end (variation 13W). At 120 knots that is 3 h 43 min at the quickest height in today's winds (6,500 ft, a 15-knot headwind), arriving about 12:52 pm EDT (16:52 UTC). Right now OGS is marginal VFR, wind from the south-southwest (200°) at 4 knots; CIU is marginal VFR, wind from the east (100°) at 4 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 first 0 nm of the route.
- AIRMET TANGO 2W: 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, 361 nm along the route.
- AIRMET SIERRA 4E: low cloud or poor visibility (IFR conditions) (due to ceilings below 1,000 ft, visibility below 3 miles, precipitation, mist). 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 OGS.
Pilot reports along the route within 50 nm of the line, last three hours, the serious ones first
- B77W at 36,000 ft, 16 nm southwest, 8:18 am EDT (12:18 UTC): moderate clear-air turbulence. At the departure end, 16 nm southwest of the line.
as filed, and in English
OGS UA /OV CURDS/TM 1218/FL360/TP B77W/TB CONS MOD CAT
- Report
- a routine report filed through OGS
- Where
- curds
- Time
- 12:18 UTC
- Height
- at 36,000 ft
- Aircraft
- B77W
- Turbulence
- continuous moderate clear-air turbulence
- B77W at 36,000 ft, 20 nm south, 8:21 am EDT (12:21 UTC): moderate clear-air turbulence. At the departure end, 20 nm south of the line.
as filed, and in English
ART UA /OV ART030030/TM 1221/FL360/TP B77W/TB CONS MOD CAT
- Report
- a routine report filed through ART
- Where
- 30 nm northeast (030°) of ART
- Time
- 12:21 UTC
- Height
- at 36,000 ft
- Aircraft
- B77W
- Turbulence
- continuous moderate clear-air turbulence
- B38M at 35,000 ft, 35 nm southeast, 8:35 am EDT (12:35 UTC): light to moderate turbulence above 35,000 ft. At the departure end, 35 nm southeast of the line.
as filed, and in English
SLK UA /OV SLK270030/TM 1235/FL350/TP B38M/TB LGT-MOD 350
- Report
- a routine report filed through SLK
- Where
- 30 nm west (270°) of SLK
- Time
- 12:35 UTC
- Height
- at 35,000 ft
- Aircraft
- B38M
- Turbulence
- light to moderate at 35,000 ft
- B38M at 39,000 ft, 42 nm southeast, 7:14 am EDT (11:14 UTC): light clear-air turbulence. At the departure end, 42 nm southeast of the line.
as filed, and in English
PTD UA /OV PTD180030/TM 1114/FL390/TP B38M/TB CONS LGT CAT
- Report
- a routine report filed through PTD
- Where
- 30 nm south (180°) of PTD
- Time
- 11:14 UTC
- Height
- at 39,000 ft
- Aircraft
- B38M
- Turbulence
- continuous light clear-air turbulence
- B38M at 39,000 ft, 33 nm south, 7:13 am EDT (11:13 UTC): light chop turbulence above 39,000 ft. At the departure end, 33 nm south of the line.
as filed, and in English
ART UA /OV ART080030/TM 1113/FL390/TP B38M/TB OCNL LGT CHOP 390
- Report
- a routine report filed through ART
- Where
- 30 nm east (080°) of ART
- Time
- 11:13 UTC
- Height
- at 39,000 ft
- Aircraft
- B38M
- Turbulence
- occasional light chop at 39,000 ft
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 (SYR, BUF, TVC). 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 | 300° at 17 kt | +17 kt | 103 kt | 3 h 48 min | 12:57 pm EDT (16:57 UTC) | |
| 6,500 ft | 310° at 16 kt | +15 kt | 11 °C | 105 kt | 3 h 43 min | 12:52 pm EDT (16:52 UTC) |
| 8,500 ft | 310° at 17 kt | +15 kt | 8 °C | 105 kt | 3 h 43 min | 12:52 pm EDT (16:52 UTC) |
| 10,500 ft | 310° at 20 kt | +18 kt | 5 °C | 102 kt | 3 h 50 min | 12:59 pm EDT (16:59 UTC) |
| 12,500 ft | 310° at 22 kt | +20 kt | 2 °C | 100 kt | 3 h 55 min | 1:04 pm EDT (17:04 UTC) |
| 14,500 ft | 310° at 23 kt | +21 kt | -3 °C | 99 kt | 3 h 57 min | 1:06 pm EDT (17:06 UTC) |
| 16,500 ft | 320° at 24 kt | +21 kt | -7 °C | 99 kt | 3 h 57 min | 1:06 pm EDT (17:06 UTC) |
| 18,000 ft FL180 | 320° at 25 kt | +21 kt | -11 °C | 99 kt | 3 h 57 min | 1:06 pm EDT (17:06 UTC) |
| 24,000 ft FL240 | 320° at 30 kt | +25 kt | -21 °C | 95 kt | 4 h 07 min | 1:16 pm EDT (17:16 UTC) |
| 30,000 ft FL300 | 320° at 38 kt | +31 kt | -37 °C | 89 kt | 4 h 24 min | 1:33 pm EDT (17:33 UTC) |
| 34,000 ft FL340 | 310° at 46 kt | +42 kt | -46 °C | 78 kt | 5 h 01 min | 2:10 pm EDT (18:10 UTC) |
| 39,000 ft FL390 | 320° at 57 kt | +48 kt | -52 °C | 72 kt | 5 h 26 min | 2:35 pm EDT (18:35 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| SYR | used from 0 nm out; 101 nm from the line | 330/17 | 320/14 9° | 350/18 8° | 350/26 2° | 340/25 -11° | 360/34 -22° | 350/43 -39° | 330/50 -46° | 350/50 -54° |
| BUF | used from 98 nm out; 140 nm from the line | 300/11 | 330/15 11° | 340/26 8° | 330/28 2° | 340/31 -10° | 340/32 -21° | 340/52 -37° | 340/59 -46° | 330/66 -53° |
| TVC | used from 244 nm out; 180 nm from the line | 270/31 | 280/23 15° | 260/22 8° | 260/29 4° | 280/29 -11° | 280/42 -21° | 270/42 -36° | 270/54 -47° | 290/67 -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 |
|---|---|---|---|---|---|---|---|
| OGS Ogdensburg, NY | departure | marginal VFR Sky: a few clouds at 500 feet, overcast at 1,200 feet | from the south-southwest (200°) at 4 knots | 10+ mi | 1,200 ft | 301 ft | 8:55 am EDT (12:55 UTC) |
| CYSH Smiths Falls-Montague, | 20 nm out, 10 nm north of the line | no report just now | 416 ft | ||||
| DRM Drummond Island, MI | 361 nm out, 9 nm south of the line | VFR | calm | 10+ mi | none | 668 ft | 12:55 UTC |
| CIU Sault Ste Marie, MI | destination | marginal VFR Sky: overcast at 1,000 feet Weather: mist | from the east (100°) at 4 knots | 6 mi | 1,000 ft | 799 ft | 8:56 am EDT (12:56 UTC) |
The highest airport on this list sits at 799 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At CIU when you get there the forecast at the estimated arrival, 12:52 pm EDT (16:52 UTC)
Wind from the east at 8 knots, visibility more than 6 miles, overcast at 800 feet IFR
The whole forecast for CIU
- From Mon 8:00 am EDT (12:00 UTC): wind calm, visibility more than 6 miles, a broken layer at 20,000 feet
- At times between Mon 8:00 am EDT (12:00 UTC) and 9:00 am EDT (13:00 UTC): visibility 1 mile, mist, a broken layer at 1,500 feet
- From Mon 9:00 am EDT (13:00 UTC): wind from the east at 8 knots, visibility more than 6 miles, overcast at 800 feet
- From Mon 2:00 pm EDT (18:00 UTC): wind from the east at 8 knots, gusting to 13, visibility 6 miles, light drizzle, mist, overcast at 800 feet
- From Tue 12:00 am EDT (04:00 UTC): wind from the east at 12 knots, visibility 4 miles, rain, mist, overcast at 300 feet
Temporary flight restrictions on the line or within 25 nm of it
No temporary flight restriction on or near this route right now.
Daylight
Sunset at OGS 6:22 pm EDT (22:22 UTC), at CIU 6:57 pm EDT (22:57 UTC) (civil twilight ends 7:27 pm EDT (23:27 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: Ogdensburg International, Chippewa County International.
