Salt Lake City International to Joslin Fld/Magic Valley Regional SLC → TWF
152 nautical miles (175 statute miles) northwest on a straight line, true course 313°, about 302° magnetic at the departure end (variation 11E). At 120 knots that is 1 h 11 min at the quickest height in today's winds (8,500 ft, a 9-knot tailwind), arriving about 5:56 am MDT (11:56 UTC), after sunset at the destination. Right now SLC is VFR, wind from the southeast (140°) at 8 knots; TWF is marginal VFR, wind from the southwest (220°) at 7 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: 1,685 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 W19W: thunderstorms (a convective SIGMET) up to 29,000 ft, moving from the southwest at 20 knots, until 5:55 am MDT (11:55 UTC). Over the route from 66 to 114 nm out.
as issued
WSUS33 KKCI 120955 MKCW WST 120955 CONVECTIVE SIGMET 19W VALID UNTIL 1155Z UT ID NV FROM 30ESE TWF-10W MLD-20E BVL-40W BVL-30ESE TWF AREA TS MOV FROM 24020KT. TOPS TO FL290.
- AIRMET ZULU 2C: moderate icing up to 23,000 ft. Over the whole route.
- AIRMET TANGO 1W: moderate turbulence below 18,000 ft (due to mountain wave) up to 12,000 ft. Over the first 0 nm of the route.
- AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the whole 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 last 28 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 SLC.
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 2 forecast points nearest it (SLC, PIH). 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 | 180° at 8 kt | −5 kt | 125 kt | 1 h 13 min | 5:58 am MDT (11:58 UTC) | |
| 6,500 ft | 190° at 10 kt | −6 kt | 126 kt | 1 h 12 min | 5:57 am MDT (11:57 UTC) | |
| 8,500 ft | 190° at 17 kt | −9 kt | 129 kt | 1 h 11 min | 5:56 am MDT (11:56 UTC) | |
| 10,500 ft | 200° at 25 kt | −9 kt | -1 °C | 129 kt | 1 h 11 min | 5:56 am MDT (11:56 UTC) |
| 12,500 ft | 210° at 32 kt | −9 kt | -4 °C | 129 kt | 1 h 11 min | 5:56 am MDT (11:56 UTC) |
| 14,500 ft | 210° at 36 kt | −9 kt | -8 °C | 129 kt | 1 h 11 min | 5:56 am MDT (11:56 UTC) |
| 16,500 ft | 210° at 39 kt | −9 kt | -13 °C | 129 kt | 1 h 11 min | 5:56 am MDT (11:56 UTC) |
| 18,000 ft FL180 | 210° at 42 kt | −9 kt | -16 °C | 129 kt | 1 h 11 min | 5:56 am MDT (11:56 UTC) |
| 24,000 ft FL240 | 220° at 55 kt | −5 kt | -25 °C | 125 kt | 1 h 13 min | 5:58 am MDT (11:58 UTC) |
| 30,000 ft FL300 | 220° at 68 kt | −8 kt | -31 °C | 128 kt | 1 h 11 min | 5:56 am MDT (11:56 UTC) |
| 34,000 ft FL340 | 220° at 61 kt | −2 kt | -36 °C | 122 kt | 1 h 15 min | 6:00 am MDT (12:00 UTC) |
| 39,000 ft FL390 | 220° at 54 kt | −2 kt | -43 °C | 122 kt | 1 h 15 min | 6:00 am MDT (12:00 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| SLC | used from 0 nm out; 24 nm from the line | 200/16 | 210/23 4° | 220/34 -3° | 210/40 -16° | 220/66 -23° | 220/64 -31° | 220/57 -36° | 220/50 -43° | |
| PIH | used from 95 nm out; 76 nm from the line | 070/8 | 150/19 1° | 180/32 -4° | 210/44 -17° | 210/37 -28° | 210/74 -31° | 220/68 -35° | 220/60 -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 |
|---|---|---|---|---|---|---|---|
| SLC Salt Lake City, UT | departure | VFR Sky: a few clouds at 5,000 feet, scattered clouds at 8,000 feet, overcast at 10,000 feet | from the southeast (140°) at 8 knots | 10+ mi | 10,000 ft | 4,230 ft | 3:54 am MDT (09:54 UTC) |
| OGD Ogden, UT | 19 nm out, 17 nm northeast of the line, tower | VFR Sky: a few clouds at 5,000 feet, a broken layer at 7,000 feet, overcast at 8,500 feet | from the southeast (140°) at 6 knots | 10+ mi | 7,000 ft | 4,472 ft | 09:53 UTC |
| BYI Burley, ID | 133 nm out, 24 nm northeast of the line | marginal VFR Sky: overcast at 2,900 feet Weather: rain, mist | from the south (170°) at 6 knots | 6 mi | 2,900 ft | 4,153 ft | 10:04 UTC |
| TWF Twin Falls, ID | destination | marginal VFR Sky: a broken layer at 2,900 feet, a broken layer at 4,100 feet, overcast at 9,000 feet Weather: light rain | from the southwest (220°) at 7 knots | 10+ mi | 2,900 ft | 4,153 ft | 4:37 am MDT (10:37 UTC) |
The highest airport on this list sits at 4,472 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At TWF when you get there the forecast at the estimated arrival, 5:56 am MDT (11:56 UTC)
Wind from the southwest at 7 knots, visibility 5 miles, light rain, mist, scattered clouds at 1,500 feet, overcast at 2,500 feet marginal VFR
The whole forecast for TWF
- From Mon 12:00 am MDT (06:00 UTC): wind from the southwest at 8 knots, visibility more than 6 miles, light rain, a broken layer at 4,000 feet
- From Mon 1:00 am MDT (07:00 UTC): wind from the southwest at 7 knots, visibility 5 miles, light rain, mist, scattered clouds at 1,500 feet, overcast at 2,500 feet
- From Mon 10:00 am MDT (16:00 UTC): wind from the west at 7 knots, visibility 6 miles, light rain showers, mist, scattered clouds at 1,500 feet, a broken layer at 3,500 feet
- From Mon 12:00 pm MDT (18:00 UTC): wind from the west-northwest at 6 knots, visibility more than 6 miles, showers nearby, scattered clouds at 4,000 feet, overcast at 8,000 feet
- From Mon 8:00 pm MDT (02:00 UTC): wind from the west-southwest at 8 knots, visibility more than 6 miles, showers nearby, overcast at 4,000 feet
The forecast for SLC, the departure
- From Mon 3:00 am MDT (09:00 UTC): wind from the south at 9 knots, visibility more than 6 miles, scattered clouds at 6,000 feet, a broken layer at 8,000 feet
- 30% chance between Mon 3:00 am MDT (09:00 UTC) and 6:00 am MDT (12:00 UTC): wind variable at 10 knots, gusting to 25, light rain showers, a broken layer at 5,000 feet
- From Mon 6:00 am MDT (12:00 UTC): wind from the south at 11 knots, visibility more than 6 miles, light rain showers, a few clouds at 2,000 feet, a broken layer at 5,000 feet
- From Mon 3:00 pm MDT (21:00 UTC): wind from the northwest at 11 knots, visibility more than 6 miles, light rain showers, scattered clouds at 2,000 feet, a broken layer at 5,000 feet
- From Mon 11:00 pm MDT (05:00 UTC): wind from the south-southeast at 9 knots, visibility more than 6 miles, light rain showers, scattered clouds at 2,000 feet, a broken layer at 3,500 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 SLC 6:50 pm MDT (00:50 UTC), at TWF 6:59 pm MDT (00:59 UTC) (civil twilight ends 7:27 pm MDT (01:27 UTC)). At 120 knots the arrival at TWF is before sunrise there (7:47 am MDT (13:47 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: Salt Lake City International, Joslin Fld/Magic Valley Regional.