Missoula Montana Airport to John Wayne/Orange County MSO → SNA
813 nautical miles (936 statute miles) south on a straight line, true course 194°, about 181° magnetic at the departure end (variation 13E). At 120 knots that is 7 h 16 min at the quickest height in today's winds (4,500 ft, a 8-knot headwind), arriving about 7:20 am PDT (14:20 UTC). Right now MSO is VFR, wind from the west-northwest (300°) at 4 knots; SNA is VFR, wind calm. 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: 55 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 188 nm of the route.
- AIRMET ZULU 2C: moderate icing up to 23,000 ft. Over the first 99 nm of the route.
- AIRMET TANGO 1W: moderate turbulence above 18,000 ft from 18,000 ft to 36,000 ft. Over the first 327 nm of the route.
- AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the first 536 nm of the route.
- AIRMET ZULU 2C: moderate icing up to 23,000 ft. Over the route from 109 to 516 nm out.
- AIRMET TANGO 4W: moderate turbulence below 18,000 ft up to 18,000 ft. Near the route, 595 nm along 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 635 to 655 nm out.
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 MSO.
Pilot reports along the route within 50 nm of the line, last three hours, the serious ones first
- PC12 at 17,000 ft, 45 nm west, 10:52 pm MDT (04:52 UTC): moderate turbulence, moderate rime icing, -15 °C, remarks: entered by zoa fdcs. 555 nm along the route, 45 nm west of the line.
as filed, and in English
TPH UA /OV OAL/TM 0452/FL 170/TP PC12/TA M15/TB MOD/IC MOD RIME/RM ENTERED BY ZOA FDCS AWC-WEB
- Report
- a routine report filed through TPH
- Where
- over OAL
- Time
- 04:52 UTC
- Height
- at 17,000 ft
- Aircraft
- PC12
- Temperature
- −15 °C
- Turbulence
- moderate
- Icing
- moderate rime
- Remarks
- entered by zoa fdcs
- E175 at 6,300 ft, 39 nm east, 10:20 pm MDT (04:20 UTC): overcast above 6,300 ft, remarks: during the descent runway 31. 198 nm along the route, 39 nm east of the line.
as filed, and in English
SUN UA /OV KSUN/TM 0420/FL063/TP E175/SK OVC063-TOPUNKN/RM DURD RY31
- Report
- a routine report filed through SUN
- Where
- over KSUN
- Time
- 04:20 UTC
- Height
- at 6,300 ft
- Aircraft
- E175
- Sky
- overcast from 6,300 ft, tops unknown
- Remarks
- during the descent runway 31
- B38M at 3,000 ft, 14 nm southeast, 11:47 pm MDT (05:47 UTC): a broken layer from 2,900 ft to 8,000 ft, remarks: BASE030. At the destination end, 14 nm southeast 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, 17 nm east, 10:59 pm MDT (04:59 UTC): a broken layer above 3,300 ft, remarks: during the descent. At the destination end, 17 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, 37 nm west, 10:54 pm MDT (04:54 UTC): overcast above 3,600 ft. At the destination end, 37 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, 21 nm east, 10:15 pm MDT (04:15 UTC): a broken layer above 4,500 ft, remarks: during the descent. At the destination end, 21 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
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 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 7 forecast points nearest it (DLN, BOI, BAM, ELY, BIH, WJF, ONT). 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 | 210° at 9 kt | +8 kt | 4 °C | 112 kt | 7 h 16 min | 7:20 am PDT (14:20 UTC) |
| 6,500 ft | 210° at 10 kt | +9 kt | 4 °C | 111 kt | 7 h 19 min | 7:23 am PDT (14:23 UTC) |
| 8,500 ft | 210° at 10 kt | +9 kt | -1 °C | 111 kt | 7 h 19 min | 7:23 am PDT (14:23 UTC) |
| 10,500 ft | 220° at 15 kt | +13 kt | -3 °C | 107 kt | 7 h 36 min | 7:40 am PDT (14:40 UTC) |
| 12,500 ft | 220° at 21 kt | +19 kt | -6 °C | 101 kt | 8 h 03 min | 8:07 am PDT (15:07 UTC) |
| 14,500 ft | 210° at 28 kt | +26 kt | -10 °C | 94 kt | 8 h 39 min | 8:43 am PDT (15:43 UTC) |
| 16,500 ft | 210° at 35 kt | +33 kt | -13 °C | 87 kt | 9 h 21 min | 9:25 am PDT (16:25 UTC) |
| 18,000 ft FL180 | 210° at 40 kt | +39 kt | -16 °C | 81 kt | 10 h 02 min | 10:06 am PDT (17:06 UTC) |
| 24,000 ft FL240 | 210° at 55 kt | +52 kt | -25 °C | 68 kt | 11 h 57 min | 12:01 pm PDT (19:01 UTC) |
| 30,000 ft FL300 | 210° at 60 kt | +55 kt | -30 °C | 65 kt | 12 h 30 min | 12:34 pm PDT (19:34 UTC) |
| 34,000 ft FL340 | 220° at 62 kt | +56 kt | -34 °C | 64 kt | 12 h 42 min | 12:46 pm PDT (19:46 UTC) |
| 39,000 ft FL390 | 220° at 57 kt | +50 kt | -42 °C | 70 kt | 11 h 37 min | 11:41 am PDT (18:41 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| DLN | used from 0 nm out; 103 nm from the line | 090/6 -6° | 240/22 -4° | 210/34 -16° | 210/62 -25° | 210/66 -34° | 210/82 -36° | 220/77 -42° | ||
| BOI | used from 149 nm out; 61 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° | |
| BAM | used from 298 nm out; 82 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° | ||
| ELY | used from 446 nm out; 75 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° | ||
| BIH | used from 546 nm out; 72 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° | |
| WJF | used from 645 nm out; 89 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° | |
| ONT | used from 744 nm out; 21 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° |
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 |
|---|---|---|---|---|---|---|---|
| MSO Missoula, MT | departure | VFR Sky: a few clouds at 1,300 feet, overcast at 8,000 feet | from the west-northwest (300°) at 4 knots | 10+ mi | 8,000 ft | 3,205 ft | 12:53 am MDT (06:53 UTC) |
| HRF Hamilton, MT | 40 nm out, 8 nm east of the line | marginal VFR Sky: a broken layer at 2,700 feet, overcast at 3,800 feet Weather: unknown precipitation | from the northwest (310°) at 4 knots | 10+ mi | 2,700 ft | 3,635 ft | 06:35 UTC |
| EKO Elko, NV | 377 nm out, 11 nm east of the line | VFR Sky: a broken layer at 3,800 feet, overcast at 4,700 feet Weather: light rain | from the east (080°) at 5 knots | 10+ mi | 3,800 ft | 5,139 ft | 05:56 UTC |
| TPH Tonopah, NV | 546 nm out, 14 nm west of the line | VFR Sky: overcast at 3,900 feet | from the north (010°) at 12 knots | 10+ mi | 3,900 ft | 5,430 ft | 06:28 UTC |
| BTY Beatty, NV | 615 nm out, 14 nm east of the line | no report just now | 3,169 ft | ||||
| IYK Inyokern, CA | 694 nm out, 21 nm west of the line | no report just now | 2,457 ft | ||||
| POC La Verne, CA | 784 nm out, 4 nm south of the line, tower | VFR Sky: scattered clouds at 2,500 feet, overcast at 5,500 feet | calm | 7 mi | 5,500 ft | 1,013 ft | 02:47 UTC |
| SNA Santa Ana, CA | destination | VFR Sky: scattered clouds at 4,100 feet, overcast at 7,000 feet | calm | 10+ mi | 7,000 ft | 55 ft | 11:53 pm PDT (06:53 UTC) |
The highest airport on this list sits at 5,430 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At SNA when you get there the forecast at the estimated arrival, 7:20 am PDT (14:20 UTC)
Wind light and variable, visibility more than 6 miles, showers nearby, scattered clouds at 2,500 feet, a broken layer at 5,000 feet VFR
The whole forecast for SNA
- From Sun 11:00 pm PDT (06:00 UTC): wind light and variable, visibility more than 6 miles, showers nearby, scattered clouds at 2,500 feet, a broken layer at 5,000 feet
- At times between Mon 2:00 am PDT (09:00 UTC) and 5:00 am PDT (12:00 UTC): a broken layer at 2,500 feet, a broken layer at 5,000 feet
- From Mon 12:00 pm PDT (19:00 UTC): wind from the southwest at 9 knots, visibility more than 6 miles, a broken layer at 5,000 feet
- From Mon 7:00 pm PDT (02:00 UTC): wind light and variable, visibility more than 6 miles, scattered clouds at 3,000 feet, a broken layer at 5,000 feet
The forecast for MSO, the departure
- From Mon 12:00 am MDT (06:00 UTC): wind from the east at 2 knots, visibility more than 6 miles, showers nearby, scattered clouds at 1,500 feet, a broken layer at 4,000 feet
- From Mon 1:00 am MDT (07:00 UTC): wind from the east at 4 knots, visibility 4 miles, light snow, mist, overcast at 1,500 feet
- From Mon 8:00 am MDT (14:00 UTC): wind from the east-southeast at 4 knots, visibility more than 6 miles, overcast at 5,000 feet
- From Mon 2:00 pm MDT (20:00 UTC): wind from the east-southeast at 5 knots, visibility more than 6 miles, overcast at 10,000 feet
Temporary flight restrictions on the line or within 25 nm of it
- 4/3635 DISNEYLAND THEME PARK, ANAHEIM,, CA 2 nm from the route, at the destination end · security · ZLA
Daylight
Sunset at MSO 6:53 pm MDT (00:53 UTC), at SNA 6:20 pm PDT (01:20 UTC) (civil twilight ends 6:45 pm PDT (01:45 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: Missoula Montana Airport, John Wayne/Orange County.
