Plan a flight · Sun 9:11 pm MDT (03:11 UTC)

Bert Mooney Airport to Joe Foss Field BTM → FSD

685 nautical miles (789 statute miles) east on a straight line, true course 096°, about 084° magnetic at the departure end (variation 12E). At 120 knots that is 4 h 05 min at the quickest height in today's winds (39,000 ft, a 48-knot tailwind), arriving about 2:16 am CDT (07:16 UTC), after sunset at the destination. Right now BTM is IFR, wind from the west-northwest (300°) at 8 knots; FSD is VFR, wind from the northwest (320°) at 4 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: 2 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 526 nm of the route.
AIRMET ZULU 2C: moderate icing up to 20,000 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 40 nm of the route.
AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the first 179 nm of the route.
AIRMET TANGO 4W: moderate turbulence below 18,000 ft up to 18,000 ft. Over the route from 129 to 228 nm out.
AIRMET ZULU 2C: moderate icing up to 23,000 ft. Near the route, 189 nm along the route.
AIRMET TANGO 4W: moderate turbulence above 18,000 ft from 18,000 ft to 36,000 ft. Over the route from 328 to 328 nm out.
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 route from 616 to 616 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 BTM.

Pilot reports along the route within 50 nm of the line, last three hours, the serious ones first

E75L descending, 4 nm southwest, 7:04 pm MDT (01:04 UTC): remarks: had the airport in sight at 400-500FT above ground. 60 nm along the route, 4 nm southwest of the line.
as filed, and in English
```
BZN UA /OV BZN/TM 0104/FLDURD/TP E75L/RM HAD THE AIRPORT IN SIGHT AT 400-500FT AGL
```
Report
a routine report filed through BZN
Where
over BZN
Time
01:04 UTC
Height
during the descent
Aircraft
E75L
Remarks
had the airport in sight at 400-500FT above ground
B737 descending, 4 nm southwest, 6:28 pm MDT (00:28 UTC): scattered clouds above 8,000 ft, fog, snow, remarks: broke out about 100FT above mins. 60 nm along the route, 4 nm southwest of the line.
as filed, and in English
```
BZN UA /OV BZN/TM 0028/FLDURD/TP B737/SK SCT080/WX 1/2SM SN FG/RM BROKE OUT ABOUT 100FT ABOVE MINS
```
Report
a routine report filed through BZN
Where
over BZN
Time
00:28 UTC
Height
during the descent
Aircraft
B737
Sky
scattered clouds from 8,000 ft
Weather
1/2SM, snow, fog
Remarks
broke out about 100FT above mins
A306 at 4,700 ft, 13 nm north, 6:51 pm MDT (00:51 UTC): a routine report with nothing remarked on. 159 nm along the route, 13 nm north of the line.
as filed, and in English
```
BIL UA /OV BIL280001/TM 0051/FL047/TP A306/SK BASE 047
```
Report
a routine report filed through BIL
Where
1 nm west (280°) of BIL
Time
00:51 UTC
Height
at 4,700 ft
Aircraft
A306
Sky
base 4,700 ft
BE20 at 15,000 ft, 48 nm south, 7:56 pm MDT (01:56 UTC): -5 °C, remarks: clear out at at 22,000 ft ZDVWC-31. 358 nm along the route, 48 nm south of the line.
as filed, and in English
```
CUT UA /OV ECS340020/TM 0156/FL150/TP BE20/TA M05/IC T RIME 150-180/RM CLR OUT AT 220 ZDVWC-31
```
Report
a routine report filed through CUT
Where
20 nm north (340°) of ECS
Time
01:56 UTC
Height
at 15,000 ft
Aircraft
BE20
Temperature
−5 °C
Icing
T rime from 15,000 ft to 18,000 ft
Remarks
clear out at at 22,000 ft ZDVWC-31
B763 at 32,000 ft, 40 nm south, 7:29 pm MDT (01:29 UTC): light to moderate clear-air turbulence, remarks: zdvwc. 497 nm along the route, 40 nm south of the line.
as filed, and in English
```
RAP UA /OV RAP084081/TM 0129/FL320/TP B763/TB OCNL LGT-MOD CAT/RM ZDVWC
```
Report
a routine report filed through RAP
Where
81 nm east (084°) of RAP
Time
01:29 UTC
Height
at 32,000 ft
Aircraft
B763
Turbulence
occasional light to moderate clear-air turbulence
Remarks
zdvwc
BE20 at 14,000 ft, 34 nm north, 6:20 pm MDT (00:20 UTC): light turbulence. At the destination end, 34 nm north of the line.
as filed, and in English
```
FSD UA /OV FSD340035/TM 0020/FL140/TP BE20/TB CONS LGT/ NEG 120
```
Report
a routine report filed through FSD
Where
35 nm north (340°) of FSD
Time
00:20 UTC
Height
at 14,000 ft
Aircraft
BE20
Turbulence
continuous light no at 12,000 ft

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 6 forecast points nearest it (DLN, BIL, MLS, RAP, PIR, FSD). 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	170° at 15 kt	+7 kt	12 °C	113 kt	6 h 04 min	4:15 am CDT (09:15 UTC)
7,500 ft	180° at 16 kt	+3 kt	9 °C	117 kt	5 h 51 min	4:02 am CDT (09:02 UTC)
9,500 ft	200° at 21 kt	−3 kt	5 °C	123 kt	5 h 34 min	3:45 am CDT (08:45 UTC)
11,500 ft	210° at 30 kt	−11 kt	3 °C	131 kt	5 h 14 min	3:25 am CDT (08:25 UTC)
13,500 ft	220° at 32 kt	−14 kt	-1 °C	134 kt	5 h 07 min	3:18 am CDT (08:18 UTC)
15,500 ft	220° at 32 kt	−16 kt	-5 °C	136 kt	5 h 02 min	3:13 am CDT (08:13 UTC)
17,500 ft	220° at 32 kt	−18 kt	-10 °C	138 kt	4 h 58 min	3:09 am CDT (08:09 UTC)
18,000 ft FL180	220° at 32 kt	−18 kt	-11 °C	138 kt	4 h 58 min	3:09 am CDT (08:09 UTC)
24,000 ft FL240	220° at 38 kt	−21 kt	-22 °C	141 kt	4 h 51 min	3:02 am CDT (08:02 UTC)
30,000 ft FL300	220° at 46 kt	−24 kt	-36 °C	144 kt	4 h 45 min	2:56 am CDT (07:56 UTC)
34,000 ft FL340	240° at 57 kt	−42 kt	-39 °C	162 kt	4 h 14 min	2:25 am CDT (07:25 UTC)
39,000 ft FL390	240° at 61 kt	−48 kt	-46 °C	168 kt	4 h 05 min	2:16 am CDT (07:16 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; 48 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°
BIL	used from 99 nm out; 43 nm from the line		080/13	180/9 -2°	210/38 0°	220/51 -11°	210/46 -22°	210/58 -35°	230/73 -39°	230/72 -45°
MLS	used from 248 nm out; 70 nm from the line		150/23 2°	190/29 4°	210/44 2°	220/32 -10°	210/36 -21°	200/48 -37°	230/63 -40°	240/71 -47°
RAP	used from 348 nm out; 61 nm from the line		180/23 12°	200/38 13°	210/38 6°	220/28 -10°	230/34 -21°	230/37 -36°	250/52 -38°	250/59 -46°
PIR	used from 447 nm out; 53 nm from the line		170/22 19°	190/25 13°	210/32 6°	240/23 -9°	250/32 -21°	250/38 -36°	260/44 -40°	260/52 -47°
FSD	used from 596 nm out; 65 nm from the line	190/9	230/30 18°	240/23 13°	240/20 6°	260/22 -9°	250/31 -21°	250/43 -36°	260/49 -43°	270/53 -47°

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
BTM Butte, MT	departure	IFR Sky: a few clouds at 800 feet, scattered clouds at 2,500 feet, overcast at 3,100 feet Weather: light snow, mist	from the west-northwest (300°) at 8 knots	2 mi	3,100 ft	5,550 ft	8:53 pm MDT (02:53 UTC)
BZN Bozeman, MT	60 nm out, 5 nm southwest of the line, tower	low IFR Sky: a few clouds at 300 feet, overcast at 1,100 feet Weather: light snow, mist	from the west-southwest (240°) at 3 knots	0.75 mi	1,100 ft	4,473 ft	02:56 UTC
LVM Livingston, MT	89 nm out, 5 nm southwest of the line	IFR Sky: scattered clouds at 400 feet, overcast at 1,100 feet Weather: light snow, mist	from the east (090°) at 13 knots	1.25 mi	1,100 ft	4,659 ft	03:00 UTC
BIL Billings, MT	169 nm out, 14 nm north of the line, tower	marginal VFR Sky: overcast at 1,000 feet Weather: light rain, light snow	from the north (360°) at 10 knots	10+ mi	1,000 ft	3,662 ft	02:53 UTC
EFC Belle Fourche, SD	367 nm out, 13 nm south of the line	no report just now				3,190 ft
PIR Pierre, SD	526 nm out, 4 nm north of the line	marginal VFR Sky: overcast at 1,100 feet	from the east (090°) at 5 knots	10+ mi	1,100 ft	1,744 ft	02:53 UTC
MHE Mitchell, SD	626 nm out, 6 nm south of the line	VFR	from the northwest (320°) at 9 knots	10+ mi	none	1,304 ft	02:53 UTC
FSD Sioux Falls, SD	destination	VFR Sky: a few clouds at 18,000 feet, scattered clouds at 25,000 feet	from the northwest (320°) at 4 knots	10+ mi	none	1,430 ft	9:56 pm CDT (02:56 UTC)

The highest airport on this list sits at 5,550 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.

At FSD when you get there the forecast at the estimated arrival, 2:16 am CDT (07:16 UTC)

Wind light and variable, visibility more than 6 miles, scattered clouds at 25,000 feet VFR

The whole forecast for FSD

From Sun 7:00 pm CDT (00:00 UTC): wind from the west at 5 knots, visibility more than 6 miles, a broken layer at 25,000 feet
From Sun 9:00 pm CDT (02:00 UTC): wind from the west-northwest at 6 knots, visibility more than 6 miles, a broken layer at 25,000 feet
From Sun 11:00 pm CDT (04:00 UTC): wind light and variable, visibility more than 6 miles, scattered clouds at 25,000 feet
From Mon 8:00 am CDT (13:00 UTC): wind from the northeast at 6 knots, visibility more than 6 miles, scattered clouds at 700 feet
From Mon 2:00 pm CDT (19:00 UTC): wind from the west-southwest at 8 knots, visibility more than 6 miles, a few clouds at 25,000 feet
From Mon 4:00 pm CDT (21:00 UTC): wind from the west at 11 knots, gusting to 17, visibility more than 6 miles, a few clouds at 25,000 feet

The forecast for BTM, the departure

From Sun 7:00 pm MDT (01:00 UTC): wind light and variable, visibility ½ mile, light snow, fog, overcast at 1,500 feet
From Sun 9:00 pm MDT (03:00 UTC): wind from the south-southeast at 5 knots, visibility 4 miles, light snow, mist, a broken layer at 2,000 feet
From Mon 12:00 am MDT (06:00 UTC): wind from the south at 2 knots, visibility 1 mile, mist, fog nearby, scattered clouds at 500 feet, overcast at 1,500 feet
30% chance between Mon 12:00 am MDT (06:00 UTC) and 3:00 am MDT (09:00 UTC): visibility ½ mile, snow, overcast at 700 feet
From Mon 3:00 am MDT (09:00 UTC): wind from the north-northeast at 5 knots, visibility 1 mile, mist, fog nearby, overcast at 1,500 feet
From Mon 10:00 am MDT (16:00 UTC): wind light and variable, visibility more than 6 miles, scattered clouds at 3,000 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 BTM 6:49 pm MDT (00:49 UTC), at FSD 6:49 pm CDT (23:49 UTC) (civil twilight ends 7:17 pm CDT (00:17 UTC)). At 120 knots the arrival at FSD is before sunrise there (7:37 am CDT (12:37 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

Radar now, the northern Rockies · loop National Weather Service

Radar, the whole country · loop National Weather Service

Surface analysis now Weather Prediction Center

Forecast chart, 12 hours ahead Weather Prediction Center

Forecast chart, 24 hours ahead Weather Prediction Center

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: Bert Mooney Airport, Joe Foss Field.