Frederick W Smith Intl/Memphis Airport to Casper/Natrona County International MEM → CPR
900 nautical miles (1,036 statute miles) northwest on a straight line, true course 307°, about 308° magnetic at the departure end (variation 1W). At 120 knots that is 7 h 42 min at the quickest height in today's winds (4,500 ft, a 3-knot headwind), arriving about 6:57 am MDT (12:57 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: 494 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 8C: thunderstorms (a convective SIGMET) up to 32,000 ft, moving from the southwest at 40 knots, until 1:55 am CDT (06:55 UTC). Near the route, 811 nm along the route.
as issued
WSUS32 KKCI 120455 MKCC WST 120455 CONVECTIVE SIGMET 8C VALID UNTIL 0655Z NE SD WY FROM 50WNW RAP-20SSW RAP-60NW BFF-40ENE DDY-50WNW RAP DMSHG AREA TS MOV FROM 22040KT. TOPS TO FL320.
- AIRMET TANGO 3W: low-level wind shear (due to air speed loss or gain of 20 knots or more below 2,000 ft above the ground). Over the route from 218 to 732 nm out.
- AIRMET TANGO 4W: moderate turbulence above 18,000 ft from 18,000 ft to 38,000 ft. Over the last 188 nm of the route.
- AIRMET TANGO 4W: moderate turbulence below 18,000 ft up to 18,000 ft. Over the last 129 nm of the route.
- AIRMET TANGO 1W: low-level wind shear (due to air speed loss or gain of 20 knots or more below 2,000 ft above the ground). Over the last 69 nm of the route.
- AIRMET ZULU 2C: moderate icing up to 23,000 ft. Over the last 30 nm of the route.
- AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Near the route, at the destination end.
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 MEM.
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 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 8 forecast points nearest it (MEM, SGF, MKC, SLN, GRI, GLD, BFF, LND). 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 | 220° at 31 kt | +3 kt | 21 °C | 117 kt | 7 h 42 min | 6:57 am MDT (12:57 UTC) |
| 6,500 ft | 220° at 27 kt | +5 kt | 17 °C | 115 kt | 7 h 50 min | 7:05 am MDT (13:05 UTC) |
| 8,500 ft | 230° at 25 kt | +9 kt | 13 °C | 111 kt | 8 h 06 min | 7:21 am MDT (13:21 UTC) |
| 10,500 ft | 230° at 22 kt | +8 kt | 10 °C | 112 kt | 8 h 02 min | 7:17 am MDT (13:17 UTC) |
| 12,500 ft | 230° at 20 kt | +6 kt | 6 °C | 114 kt | 7 h 54 min | 7:09 am MDT (13:09 UTC) |
| 14,500 ft | 230° at 21 kt | +8 kt | 1 °C | 112 kt | 8 h 02 min | 7:17 am MDT (13:17 UTC) |
| 16,500 ft | 240° at 22 kt | +11 kt | -4 °C | 109 kt | 8 h 15 min | 7:30 am MDT (13:30 UTC) |
| 18,000 ft FL180 | 240° at 23 kt | +12 kt | -7 °C | 108 kt | 8 h 20 min | 7:35 am MDT (13:35 UTC) |
| 24,000 ft FL240 | 240° at 31 kt | +14 kt | -19 °C | 106 kt | 8 h 29 min | 7:44 am MDT (13:44 UTC) |
| 30,000 ft FL300 | 250° at 42 kt | +28 kt | -32 °C | 92 kt | 9 h 47 min | 9:02 am MDT (15:02 UTC) |
| 34,000 ft FL340 | 260° at 49 kt | +38 kt | -38 °C | 82 kt | 10 h 59 min | 10:14 am MDT (16:14 UTC) |
| 39,000 ft FL390 | 270° at 49 kt | +41 kt | -49 °C | 79 kt | 11 h 24 min | 10:39 am MDT (16:39 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| MEM | used from 0 nm out; 25 nm from the line | 230/19 | 260/16 15° | 270/17 12° | 300/13 6° | 300/15 -5° | 300/26 -18° | 300/34 -32° | 300/41 -40° | 310/46 -52° |
| SGF | used from 99 nm out; 89 nm from the line | 230/33 | 230/28 15° | 250/20 13° | 240/18 7° | 250/20 -6° | 250/24 -17° | 280/42 -31° | 280/49 -40° | 290/46 -51° |
| MKC | used from 297 nm out; 73 nm from the line | 220/44 | 250/28 18° | 250/18 13° | 240/12 6° | 280/24 -6° | 240/34 -18° | 260/47 -30° | 260/51 -40° | 270/58 -50° |
| SLN | used from 346 nm out; 64 nm from the line | 210/53 | 230/41 20° | 240/26 14° | 230/16 8° | 240/25 -7° | 240/35 -19° | 250/61 -30° | 260/65 -38° | 260/56 -49° |
| GRI | used from 495 nm out; 74 nm from the line | 230/35 21° | 230/23 13° | 220/20 7° | 240/25 -8° | 240/37 -20° | 250/49 -33° | 260/57 -38° | 260/58 -47° | |
| GLD | used from 594 nm out; 88 nm from the line | 230/49 | 230/42 15° | 220/26 8° | 240/18 -7° | 230/27 -21° | 240/62 -30° | 240/61 -35° | 250/57 -47° | |
| BFF | used from 643 nm out; 91 nm from the line | 180/28 | 220/33 15° | 210/31 7° | 230/32 -9° | 220/41 -21° | 220/40 -33° | 240/47 -36° | 250/54 -46° | |
| LND | used from 891 nm out; 104 nm from the line | 200/23 6° | 220/31 1° | 220/39 -11° | 230/39 -23° | 220/51 -28° | 220/66 -37° | 230/68 -45° |
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 |
|---|---|---|---|---|---|---|---|
| MEM Memphis, TN | departure | no report just now | 340 ft | ||||
| BVX Batesville, AR | 89 nm out, 15 nm southwest of the line | no report just now | 465 ft | ||||
| BBG Branson, MO | 178 nm out, 19 nm southwest of the line, tower | no report just now | 1,302 ft | ||||
| SGF Springfield, MO | 208 nm out, 12 nm north of the line, tower | no report just now | 1,268 ft | ||||
| FSK Fort Scott, KS | 287 nm out, 3 nm east of the line | no report just now | 918 ft | ||||
| MHK Manhattan, KS | 406 nm out, 21 nm northeast of the line, tower | no report just now | 1,066 ft | ||||
| PHG Phillipsburg, KS | 524 nm out, 14 nm southwest of the line | no report just now | 1,910 ft | ||||
| CSB Cambridge, NE | 574 nm out, 5 nm west of the line | no report just now | 2,414 ft | ||||
| OGA Ogallala, NE | 663 nm out, 3 nm north of the line | no report just now | 3,279 ft | ||||
| BFF Scottsbluff, NE | 762 nm out, 4 nm east of the line | no report just now | 3,967 ft | ||||
| GUR Guernsey, WY | 811 nm out, 3 nm northwest of the line, tower | no report just now | 4,401 ft | ||||
| CPR Casper, WY | destination | no report just now | 5,344 ft |
The highest airport on this list sits at 5,344 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At CPR when you get there the forecast at the estimated arrival, 6:57 am MDT (12:57 UTC)
CPR 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 MEM 6:29 pm CDT (23:29 UTC), at CPR 6:28 pm MDT (00:28 UTC) (civil twilight ends 6:56 pm MDT (00:56 UTC)). At 120 knots the arrival at CPR is before sunrise there (7:15 am MDT (13:15 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: Frederick W Smith Intl/Memphis Airport, Casper/Natrona County International.