Joslin Fld/Magic Valley Regional to Fresno Yosemite International TWF → FAT
419 nautical miles (482 statute miles) southwest on a straight line, true course 217°, about 204° magnetic at the departure end (variation 13E). At 120 knots that is 3 h 30 min at the quickest height in today's winds (4,500 ft, no wind along the track), arriving about 7:10 am PDT (14:10 UTC). Right now TWF is VFR, wind from the south-southwest (200°) at 9 knots; FAT is VFR, wind from the east-southeast (120°) at 13 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 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 4E: 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 ZULU 2C: moderate icing up to 23,000 ft. Over the first 230 nm of the route.
- AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the first 180 nm of the route.
- AIRMET TANGO 1W: moderate turbulence above 18,000 ft from 18,000 ft to 39,000 ft. Over the last 130 nm of the route.
- AIRMET SIERRA 2E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the last 50 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 TWF.
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 4 forecast points nearest it (BOI, BAM, BIH, FAT). 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 2 kt | 0 | 1 °C | 120 kt | 3 h 30 min | 7:10 am PDT (14:10 UTC) |
| 6,500 ft | 310° at 2 kt | 0 | 1 °C | 120 kt | 3 h 30 min | 7:10 am PDT (14:10 UTC) |
| 8,500 ft | 300° at 5 kt | +1 kt | -2 °C | 119 kt | 3 h 31 min | 7:11 am PDT (14:11 UTC) |
| 10,500 ft | 260° at 6 kt | +5 kt | -5 °C | 115 kt | 3 h 39 min | 7:19 am PDT (14:19 UTC) |
| 12,500 ft | 230° at 12 kt | +12 kt | -9 °C | 108 kt | 3 h 53 min | 7:33 am PDT (14:33 UTC) |
| 14,500 ft | 210° at 22 kt | +21 kt | -12 °C | 99 kt | 4 h 14 min | 7:54 am PDT (14:54 UTC) |
| 16,500 ft | 200° at 32 kt | +31 kt | -15 °C | 89 kt | 4 h 42 min | 8:22 am PDT (15:22 UTC) |
| 18,000 ft FL180 | 200° at 41 kt | +39 kt | -18 °C | 81 kt | 5 h 10 min | 8:50 am PDT (15:50 UTC) |
| 24,000 ft FL240 | 210° at 42 kt | +41 kt | -28 °C | 79 kt | 5 h 18 min | 8:58 am PDT (15:58 UTC) |
| 30,000 ft FL300 | 210° at 48 kt | +48 kt | -30 °C | 72 kt | 5 h 49 min | 9:29 am PDT (16:29 UTC) |
| 34,000 ft FL340 | 220° at 52 kt | +51 kt | -35 °C | 69 kt | 6 h 04 min | 9:44 am PDT (16:44 UTC) |
| 39,000 ft FL390 | 220° at 45 kt | +44 kt | -42 °C | 76 kt | 5 h 31 min | 9:11 am PDT (16:11 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| BOI | used from 0 nm out; 105 nm from the line | 320/11 1° | 280/8 -5° | 220/14 -11° | 200/60 -19° | 190/66 -31° | 210/46 -32° | 220/50 -33° | 220/43 -39° | |
| BAM | used from 50 nm out; 82 nm from the line | 280/9 -2° | 260/18 -8° | 190/47 -19° | 200/50 -29° | 210/56 -29° | 220/54 -34° | 220/45 -42° | ||
| BIH | used from 249 nm out; 86 nm from the line | L/V | 020/6 0° | 140/7 -7° | 210/31 -16° | 230/34 -26° | 220/43 -30° | 220/52 -36° | 220/46 -43° | |
| FAT | used from 399 nm out; 10 nm from the line | 140/11 | 180/15 3° | 150/14 -3° | 200/14 -6° | 240/17 -16° | 320/25 -23° | 270/22 -31° | 240/29 -37° | 230/36 -44° |
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 |
|---|---|---|---|---|---|---|---|
| TWF Twin Falls, ID | departure | VFR Sky: a few clouds at 3,100 feet, overcast at 4,000 feet Weather: light rain | from the south-southwest (200°) at 9 knots | 10+ mi | 4,000 ft | 4,153 ft | 3:53 am MDT (09:53 UTC) |
| EKO Elko, NV | 110 nm out, 13 nm southeast of the line | VFR Sky: a few clouds at 3,500 feet, overcast at 4,600 feet Weather: light rain | from the east-northeast (070°) at 5 knots | 10+ mi | 4,600 ft | 5,139 ft | 09:56 UTC |
| BAM Battle Mountain, NV | 150 nm out, 21 nm west of the line | VFR Sky: scattered clouds at 8,500 feet, overcast at 10,000 feet | from the north-northwest (340°) at 8 knots | 10+ mi | 10,000 ft | 4,536 ft | 10:35 UTC |
| TMT Austin, NV | 220 nm out, 7 nm southeast of the line | VFR Sky: overcast at 8,500 feet | from the north-northwest (330°) at 5 knots | 10+ mi | 8,500 ft | 5,735 ft | 10:15 UTC |
| GAB Gabbs, NV | 269 nm out, 5 nm north of the line | no report just now | 4,699 ft | ||||
| HTH Hawthorne, NV | 299 nm out, 17 nm northwest of the line | VFR Sky: scattered clouds at 6,500 feet, a broken layer at 7,500 feet, overcast at 9,000 feet | from the north-northwest (330°) at 9 knots | 10+ mi | 7,500 ft | 4,230 ft | 10:35 UTC |
| MMH Mammoth Lakes, CA | 349 nm out, 8 nm southeast of the line | VFR Sky: a few clouds at 4,700 feet, a broken layer at 6,500 feet, overcast at 7,500 feet | from the west (280°) at 4 knots | 10+ mi | 6,500 ft | 7,134 ft | 10:35 UTC |
| FAT Fresno, CA | destination | VFR Sky: a broken layer at 6,000 feet | from the east-southeast (120°) at 13 knots | 10+ mi | 6,000 ft | 335 ft | 2:53 am PDT (09:53 UTC) |
The highest airport on this list sits at 7,134 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At FAT when you get there the forecast at the estimated arrival, 7:10 am PDT (14:10 UTC)
Wind light and variable, visibility more than 6 miles, scattered clouds at 25,000 feet VFR
The whole forecast for FAT
- From Sun 11:00 pm PDT (06:00 UTC): wind from the southeast at 10 knots, visibility more than 6 miles, a few clouds at 3,000 feet, scattered clouds at 20,000 feet
- From Mon 2:00 am PDT (09:00 UTC): wind light and variable, visibility more than 6 miles, scattered clouds at 25,000 feet
The forecast for TWF, the departure
- 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
Temporary flight restrictions on the line or within 25 nm of it
- 6/7094 45NM NE MERCED, CA, Sunday, October 4, 2026 through Tuesday, October 20, 2026 UTC 14 nm from the route, 379 nm along the route · a hazard on the ground (fire-fighting, a chemical spill, rescue work) · until 20 October · ZOA
Daylight
Sunset at TWF 6:59 pm MDT (00:59 UTC), at FAT 6:25 pm PDT (01:25 UTC) (civil twilight ends 6:51 pm PDT (01:51 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: Joslin Fld/Magic Valley Regional, Fresno Yosemite International.