Ontario International to Joslin Fld/Magic Valley Regional ONT → TWF
527 nautical miles (606 statute miles) north on a straight line, true course 015°, about 003° magnetic at the departure end (variation 12E). At 120 knots that is 3 h 01 min at the quickest height in today's winds (30,000 ft, a 55-knot tailwind), arriving about 3:03 am MDT (09:03 UTC), after sunset at the destination. Right now ONT is marginal VFR, wind variable at 4 knots; TWF is VFR, wind from the south-southwest (210°) at 10 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 TANGO 1W: moderate turbulence below 18,000 ft (due to mountain wave) up to 15,000 ft. Over the first 179 nm of the route.
- AIRMET TANGO 3W: strong surface winds (30 knots or more) (due to sustained surface winds greater than 30 knots). Over the route from 119 to 149 nm out.
- AIRMET TANGO 4W: moderate turbulence below 18,000 ft up to 18,000 ft. Over the route from 179 to 288 nm out.
- AIRMET ZULU 2C: moderate icing up to 23,000 ft. Over the last 258 nm of the route.
- AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the last 248 nm of the route.
- AIRMET TANGO 1W: moderate turbulence above 18,000 ft from 18,000 ft to 36,000 ft. Over the last 40 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 ONT.
Pilot reports along the route within 50 nm of the line, last three hours, the serious ones first
- B737 at 13,000 ft, 45 nm southwest, 8:30 pm PDT (03:30 UTC): moderate turbulence. At the departure end, 45 nm southwest of the line.
as filed, and in English
SLI UA /OV SLI180020/TM 0330/FL130/TP B737/TB MOD
- Report
- a routine report filed through SLI
- Where
- 20 nm south (180°) of SLI
- Time
- 03:30 UTC
- Height
- at 13,000 ft
- Aircraft
- B737
- Turbulence
- moderate
- B38M at 3,000 ft, 5 nm east, 10:47 pm PDT (05:47 UTC): a broken layer from 2,900 ft to 8,000 ft, remarks: BASE030. At the departure end, 5 nm east of the line.
as filed, and in English
ONT UA /OV KONT080005/TM 0547/FL030/TP B38M/SK BKN029-TOP080/RM BASE030
- Report
- a routine report filed through ONT
- Where
- 5 nm east (080°) of KONT
- Time
- 05:47 UTC
- Height
- at 3,000 ft
- Aircraft
- B38M
- Sky
- a broken layer from 2,900 ft, tops 8,000 ft
- Remarks
- BASE030
- A321 at 3,300 ft, 8 nm east, 9:59 pm PDT (04:59 UTC): a broken layer above 3,300 ft, remarks: during the descent. At the departure end, 8 nm east of the line.
as filed, and in English
ONT UA /OV ONT078008/TM 0459/FL033/TP A321/SK BKN033-TOPUNKN/RM DURD
- Report
- a routine report filed through ONT
- Where
- 8 nm east (078°) of ONT
- Time
- 04:59 UTC
- Height
- at 3,300 ft
- Aircraft
- A321
- Sky
- a broken layer from 3,300 ft, tops unknown
- Remarks
- during the descent
- GLF5 at 3,500 ft, 45 nm west, 9:54 pm PDT (04:54 UTC): overcast above 3,600 ft. At the departure end, 45 nm west of the line.
as filed, and in English
VNY UA /OV VNY36006/TM 0454/FL035/TP GLF5/SK OVC036
- Report
- a routine report filed through VNY
- Where
- VNY36006
- Time
- 04:54 UTC
- Height
- at 3,500 ft
- Aircraft
- GLF5
- Sky
- overcast from 3,600 ft
- B38M at 4,500 ft, 12 nm east, 9:15 pm PDT (04:15 UTC): a broken layer above 4,500 ft, remarks: during the descent. At the departure end, 12 nm east of the line.
as filed, and in English
ONT UA /OV ONT078012/TM 0415/FL045/TP B38M/SK BKN045-TOPUNKN/RM DURD
- Report
- a routine report filed through ONT
- Where
- 12 nm east (078°) of ONT
- Time
- 04:15 UTC
- Height
- at 4,500 ft
- Aircraft
- B38M
- Sky
- a broken layer from 4,500 ft, tops unknown
- Remarks
- during the descent
- E75L at 3,600 ft, 33 nm west, 8:30 pm PDT (03:30 UTC): overcast above 6,600 ft, remarks: bases 3,600 ft. At the departure end, 33 nm west of the line.
as filed, and in English
KLAX UA /OV 10 E LAX/TM 0330/FL036/TP E75L/SK OVC066/RM BASES 036
- Report
- a routine report filed through KLAX
- Where
- 10 east lax
- Time
- 03:30 UTC
- Height
- at 3,600 ft
- Aircraft
- E75L
- Sky
- overcast from 6,600 ft
- Remarks
- bases 3,600 ft
- B737 at 3,500 ft, 31 nm southwest, 8:25 pm PDT (03:25 UTC): a broken layer above 3,500 ft. At the departure end, 31 nm southwest of the line.
as filed, and in English
LGB UA /OV LGB/TM 0325/FL035/TP B737/SK BKN035
- Report
- a routine report filed through LGB
- Where
- over LGB
- Time
- 03:25 UTC
- Height
- at 3,500 ft
- Aircraft
- B737
- Sky
- a broken layer from 3,500 ft
- A20N climbing, 7 nm south, 8:04 pm PDT (03:04 UTC): a routine report with nothing remarked on. At the departure end, 7 nm south of the line.
as filed, and in English
ONT UA /OV ONT153007/TM 0304/FLDURC/TP A20N/SK B-036 -T047
- Report
- a routine report filed through ONT
- Where
- 7 nm southeast (153°) of ONT
- Time
- 03:04 UTC
- Height
- during the climb
- Aircraft
- A20N
- Sky
- B-036 T047
- A20N climbing, 3 nm southwest, 8:03 pm PDT (03:03 UTC): a routine report with nothing remarked on. At the departure end, 3 nm southwest of the line.
as filed, and in English
ONT UA /OV ONT204003/TM 0303/FLDURC/TP A20N/SK B-030
- Report
- a routine report filed through ONT
- Where
- 3 nm southwest (204°) of ONT
- Time
- 03:03 UTC
- Height
- during the climb
- Aircraft
- A20N
- Sky
- B-030
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 7 forecast points nearest it (ONT, WJF, LAS, BIH, ELY, BAM, 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 |
|---|---|---|---|---|---|---|
| 5,500 ft | 200° at 15 kt | −15 kt | 9 °C | 135 kt | 3 h 54 min | 3:56 am MDT (09:56 UTC) |
| 7,500 ft | 210° at 19 kt | −19 kt | 4 °C | 139 kt | 3 h 47 min | 3:49 am MDT (09:49 UTC) |
| 9,500 ft | 210° at 20 kt | −20 kt | 2 °C | 140 kt | 3 h 46 min | 3:48 am MDT (09:48 UTC) |
| 11,500 ft | 220° at 21 kt | −20 kt | -2 °C | 140 kt | 3 h 46 min | 3:48 am MDT (09:48 UTC) |
| 13,500 ft | 210° at 26 kt | −25 kt | -6 °C | 145 kt | 3 h 38 min | 3:40 am MDT (09:40 UTC) |
| 15,500 ft | 210° at 33 kt | −32 kt | -10 °C | 152 kt | 3 h 28 min | 3:30 am MDT (09:30 UTC) |
| 17,500 ft | 210° at 39 kt | −38 kt | -14 °C | 158 kt | 3 h 20 min | 3:22 am MDT (09:22 UTC) |
| 18,000 ft FL180 | 210° at 41 kt | −40 kt | -15 °C | 160 kt | 3 h 18 min | 3:20 am MDT (09:20 UTC) |
| 24,000 ft FL240 | 210° at 53 kt | −51 kt | -24 °C | 171 kt | 3 h 05 min | 3:07 am MDT (09:07 UTC) |
| 30,000 ft FL300 | 220° at 59 kt | −55 kt | -29 °C | 175 kt | 3 h 01 min | 3:03 am MDT (09:03 UTC) |
| 34,000 ft FL340 | 220° at 59 kt | −55 kt | -35 °C | 175 kt | 3 h 01 min | 3:03 am MDT (09:03 UTC) |
| 39,000 ft FL390 | 220° at 55 kt | −50 kt | -43 °C | 170 kt | 3 h 06 min | 3:08 am MDT (09:08 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| ONT | used from 0 nm out; 25 nm from the line | 190/8 | 190/19 6° | 210/23 4° | 210/29 -3° | 210/47 -13° | 210/49 -19° | 220/47 -30° | 220/50 -36° | 220/55 -43° |
| WJF | used from 50 nm out; 59 nm from the line | 200/28 6° | 210/28 3° | 210/29 -4° | 210/28 -14° | 220/41 -20° | 220/47 -29° | 220/46 -37° | 220/53 -44° | |
| LAS | used from 99 nm out; 86 nm from the line | 210/21 10° | 200/18 5° | 200/23 -2° | 210/49 -14° | 210/63 -21° | 220/58 -30° | 220/61 -35° | 210/56 -44° | |
| BIH | used from 199 nm out; 97 nm from the line | L/V | 240/7 1° | 190/13 -3° | 200/26 -16° | 210/43 -26° | 220/54 -28° | 220/51 -35° | 220/47 -43° | |
| ELY | used from 248 nm out; 77 nm from the line | 200/39 3° | 210/27 -2° | 210/45 -15° | 220/56 -24° | 210/60 -28° | 210/63 -34° | 220/61 -43° | ||
| BAM | used from 397 nm out; 79 nm from the line | 310/7 0° | 270/19 -7° | 200/38 -17° | 190/49 -28° | 220/69 -29° | 220/63 -33° | 230/48 -41° | ||
| PIH | used from 497 nm out; 97 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° |
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 |
|---|---|---|---|---|---|---|---|
| ONT Ontario, CA | departure | marginal VFR Sky: a broken layer at 2,900 feet, a broken layer at 4,000 feet, overcast at 5,000 feet Weather: light rain, mist | variable at 4 knots | 6 mi | 2,900 ft | 944 ft | 10:53 pm PDT (05:53 UTC) |
| VCV Victorville, CA | 30 nm out, 5 nm northeast of the line, tower | VFR Sky: a few clouds at 11,000 feet | from the south-southeast (150°) at 24 knots, gusting to 30 | 10+ mi | none | 2,885 ft | 05:55 UTC |
| BTY Beatty, NV | 169 nm out, 8 nm northwest of the line | no report just now | 3,169 ft | ||||
| LWL Wells, NV | 447 nm out, 7 nm southeast of the line | no report just now | 5,769 ft | ||||
| TWF Twin Falls, ID | destination | VFR Sky: overcast at 5,500 feet Weather: light rain | from the south-southwest (210°) at 10 knots | 10+ mi | 5,500 ft | 4,153 ft | 11:53 pm MDT (05:53 UTC) |
The highest airport on this list sits at 5,769 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, 3:03 am MDT (09:03 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 ONT, the departure
- From Sun 11:00 pm PDT (06:00 UTC): wind from the west-southwest at 6 knots, visibility more than 6 miles, showers nearby, scattered clouds at 2,500 feet, a broken layer at 5,000 feet
- From Mon 2:00 am PDT (09:00 UTC): wind from the west-southwest at 4 knots, visibility more than 6 miles, showers nearby, a broken layer at 2,500 feet, a broken layer at 5,000 feet
- From Mon 11:00 am PDT (18:00 UTC): wind from the west-southwest at 5 knots, visibility more than 6 miles, a broken layer at 5,000 feet
- From Mon 2:00 pm PDT (21:00 UTC): wind from the west-southwest at 11 knots, gusting to 18, visibility more than 6 miles, a broken layer at 5,000 feet
- From Mon 8:00 pm PDT (03:00 UTC): wind from the west-southwest at 9 knots, visibility more than 6 miles, a broken layer at 6,000 feet
Temporary flight restrictions on the line or within 25 nm of it
- 4/3635 DISNEYLAND THEME PARK, ANAHEIM,, CA 19 nm from the route, at the departure end · security · ZLA
Daylight
Sunset at ONT 6:20 pm PDT (01:20 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: Ontario International, Joslin Fld/Magic Valley Regional.