Lewiston/Nez Perce County to Salt Lake City International LWS → SLC
400 nautical miles (461 statute miles) southeast on a straight line, true course 145°, about 130° magnetic at the departure end (variation 15E). At 120 knots that is 3 h 18 min at the quickest height in today's winds (7,500 ft, a 1-knot tailwind), arriving about 12:49 am MDT (06:49 UTC), after sunset at the destination. 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: 738 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 ZULU 2C: moderate icing up to 20,000 ft. Over the first 107 nm of the route.
- AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the whole route.
- AIRMET TANGO 1W: moderate turbulence above 18,000 ft from 18,000 ft to 36,000 ft. Over the route from 29 to 195 nm out.
- AIRMET ZULU 2C: moderate icing up to 23,000 ft. Over the last 273 nm of 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). Over the route from 156 to 205 nm out.
- AIRMET TANGO 4W: moderate turbulence above 18,000 ft from 18,000 ft to 36,000 ft. Over the last 10 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 LWS.
Pilot reports along the route within 50 nm of the line, last three hours, the serious ones first
- E175 at 5,700 ft, 2 nm southeast, 7:59 pm PDT (02:59 UTC): a broken layer above 5,700 ft, remarks: during the descent runway 31. 205 nm along the route, 2 nm southeast of the line.
as filed, and in English
SUN UA /OV KSUN/TM 0259/FL057/TP E175/SK BKN057-TOPUNKN/RM DURD RY31
- Report
- a routine report filed through SUN
- Where
- over KSUN
- Time
- 02:59 UTC
- Height
- at 5,700 ft
- Aircraft
- E175
- Sky
- a broken layer from 5,700 ft, tops unknown
- Remarks
- during the descent runway 31
- PC12 at 6,000 ft, 2 nm southeast, 6:09 pm PDT (01:09 UTC): scattered clouds up to 6,000 ft, remarks: multiple scattered layers during the descent runway 31. 205 nm along the route, 2 nm southeast of the line.
as filed, and in English
SUN UA /OV KSUN/TM 0109/FL060/TP PC12/SK SCT-TOP060/WX FV05SM/RM MULTIPLE SCT LAYERS DURD RY31
- Report
- a routine report filed through SUN
- Where
- over KSUN
- Time
- 01:09 UTC
- Height
- at 6,000 ft
- Aircraft
- PC12
- Sky
- scattered clouds, tops 6,000 ft
- Weather
- flight visibility 5 miles
- Remarks
- multiple scattered layers during the descent runway 31
- B737 at 16,000 ft, 18 nm southwest, 5:45 pm PDT (00:45 UTC): no turbulence, light rime icing from 13,000 ft to 17,000 ft, 8 °C, remarks: during the climb. At the destination end, 18 nm southwest of the line.
as filed, and in English
SLC UA /OV TCH230020/TM 0045/FL160/TP B737/TA 8/TB NEG/IC LT RIME 130-170/RM DURC
- Report
- a routine report filed through SLC
- Where
- 20 nm southwest (230°) of TCH
- Time
- 00:45 UTC
- Height
- at 16,000 ft
- Aircraft
- B737
- Temperature
- 8 °C
- Turbulence
- none
- Icing
- lt rime from 13,000 ft to 17,000 ft
- Remarks
- during the climb
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 4 forecast points nearest it (LWS, BOI, PIH, SLC). A plus sign is a headwind, a minus sign a tailwind.
| Height | Average wind | Head- or tailwind | Temperature | Ground speed | Time en route | Arrival |
|---|---|---|---|---|---|---|
| 5,500 ft | 060° at 1 kt | 0 | 2 °C | 120 kt | 3 h 20 min | 12:51 am MDT (06:51 UTC) |
| 7,500 ft | 270° at 2 kt | −1 kt | -2 °C | 121 kt | 3 h 18 min | 12:49 am MDT (06:49 UTC) |
| 9,500 ft | 250° at 5 kt | −1 kt | -3 °C | 121 kt | 3 h 18 min | 12:49 am MDT (06:49 UTC) |
| 11,500 ft | 220° at 9 kt | +2 kt | -5 °C | 118 kt | 3 h 23 min | 12:54 am MDT (06:54 UTC) |
| 13,500 ft | 210° at 18 kt | +8 kt | -9 °C | 112 kt | 3 h 34 min | 1:05 am MDT (07:05 UTC) |
| 15,500 ft | 210° at 29 kt | +15 kt | -12 °C | 105 kt | 3 h 49 min | 1:20 am MDT (07:20 UTC) |
| 17,500 ft | 200° at 40 kt | +22 kt | -16 °C | 98 kt | 4 h 05 min | 1:36 am MDT (07:36 UTC) |
| 18,000 ft FL180 | 200° at 43 kt | +24 kt | -17 °C | 96 kt | 4 h 10 min | 1:41 am MDT (07:41 UTC) |
| 24,000 ft FL240 | 190° at 60 kt | +40 kt | -28 °C | 80 kt | 5 h | 2:31 am MDT (08:31 UTC) |
| 30,000 ft FL300 | 210° at 59 kt | +24 kt | -31 °C | 96 kt | 4 h 10 min | 1:41 am MDT (07:41 UTC) |
| 34,000 ft FL340 | 220° at 57 kt | +17 kt | -34 °C | 103 kt | 3 h 53 min | 1:24 am MDT (07:24 UTC) |
| 39,000 ft FL390 | 220° at 50 kt | +14 kt | -41 °C | 106 kt | 3 h 46 min | 1:17 am MDT (07:17 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| LWS | used from 0 nm out; 24 nm from the line | 070/10 | 080/12 -2° | 030/12 -6° | 080/7 -10° | 170/34 -21° | 160/46 -32° | 200/33 -35° | 220/22 -35° | 230/18 -38° |
| BOI | used from 98 nm out; 77 nm from the line | 300/7 2° | 280/5 -4° | 210/16 -9° | 210/60 -20° | 210/75 -29° | 210/63 -32° | 220/64 -32° | 220/54 -39° | |
| PIH | used from 195 nm out; 72 nm from the line | L/V | 240/13 1° | 240/15 -3° | 210/42 -15° | 200/70 -25° | 220/74 -29° | 220/71 -36° | 220/62 -43° | |
| SLC | used from 342 nm out; 34 nm from the line | 200/5 | 230/8 2° | 220/20 -2° | 210/40 -12° | 190/53 -25° | 210/62 -30° | 220/69 -34° | 220/64 -43° |
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 |
|---|---|---|---|---|---|---|---|
| LWS Lewiston, ID | departure | no report just now | 1,442 ft | ||||
| GIC Grangeville, ID | 39 nm out, 16 nm northeast of the line | no report just now | 3,313 ft | ||||
| MYL Mc Call, ID | 98 nm out, 19 nm southwest of the line | no report just now | 5,024 ft | ||||
| SUN Hailey, ID | 205 nm out, 2 nm southeast of the line, tower | no report just now | 5,319 ft | ||||
| BYI Burley, ID | 264 nm out, 13 nm southwest of the line | no report just now | 4,153 ft | ||||
| OGD Ogden, UT | 381 nm out, 12 nm northeast of the line, tower | no report just now | 4,472 ft | ||||
| SLC Salt Lake City, UT | destination | no report just now | 4,230 ft |
The highest airport on this list sits at 5,319 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At SLC when you get there the forecast at the estimated arrival, 12:49 am MDT (06:49 UTC)
SLC has no terminal forecast; use the nearest airport that does.
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 LWS 6:07 pm PDT (01:07 UTC), at SLC 6:52 pm MDT (00:52 UTC) (civil twilight ends 7:19 pm MDT (01:19 UTC)). At 120 knots the arrival at SLC is before sunrise there (7:35 am MDT (13:35 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: Lewiston/Nez Perce County, Salt Lake City International.