Plan a flight · Sun 7:49 pm CDT (00:49 UTC)

Pierre Regional to Nashville International PIR → BNA

795 nautical miles (915 statute miles) southeast on a straight line, true course 124°, about 116° magnetic at the departure end (variation 8E). At 120 knots that is 4 h 41 min at the quickest height in today's winds (39,000 ft, a 50-knot tailwind), arriving about 12:30 am CDT (05:30 UTC), after sunset at the destination. Right now PIR is IFR, wind from the northeast (050°) at 9 knots; BNA is VFR, wind variable at 3 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 20 nm of the route.
AIRMET TANGO 6W: moderate turbulence above 18,000 ft from 28,000 ft to 40,000 ft. Over the last 20 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 PIR.

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

PC12 at 100 ft, 5 nm east, 5:34 pm CDT (22:34 UTC): no icing. At the departure end, 5 nm east of the line.
as filed, and in English
```
PIR UA /OV PIR/TM 2234/FL001/TP PC12/SK BASE030-TOP045/IC NEG
```
Report
a routine report filed through PIR
Where
over PIR
Time
22:34 UTC
Height
at 100 ft
Aircraft
PC12
Sky
BASE030-TOP045
Icing
none
B737 at 31,000 ft, 19 nm southwest, 7:13 pm CDT (00:13 UTC): light chop turbulence, remarks: ZME25. 676 nm along the route, 19 nm southwest of the line.
as filed, and in English
```
PAH UA /OV CNG360015/TM 0013/FL310/TP B737/TB OCNL LGT CHOP/RM ZME25
```
Report
a routine report filed through PAH
Where
15 nm north (360°) of CNG
Time
00:13 UTC
Height
at 31,000 ft
Aircraft
B737
Turbulence
occasional light chop
Remarks
ZME25
B738 at 34,000 ft, 4 nm south, 6:41 pm CDT (23:41 UTC): light to moderate chop turbulence, remarks: zme. 745 nm along the route, 4 nm south of the line.
as filed, and in English
```
CKV UA /OV CKV/TM 2341/FL340/TP B738/TB CONS LGT OCNL MOD CHOP/RM ZME
```
Report
a routine report filed through CKV
Where
over CKV
Time
23:41 UTC
Height
at 34,000 ft
Aircraft
B738
Turbulence
continuous light occasional moderate chop
Remarks
zme
B77W at 31,000 ft, 1 nm north, 6:27 pm CDT (23:27 UTC): light to moderate chop turbulence, remarks: zme. At the destination end, 1 nm north of the line.
as filed, and in English
```
BNA UA /OV BNA315030/TM 2327/FL310/TP B77W/TB CONS LGT OCNL MOD CHOP/RM ZME
```
Report
a routine report filed through BNA
Where
30 nm northwest (315°) of BNA
Time
23:27 UTC
Height
at 31,000 ft
Aircraft
B77W
Turbulence
continuous light occasional moderate chop
Remarks
zme
A319 at 32,000 ft, 1 nm north, 5:56 pm CDT (22:56 UTC): light to moderate chop turbulence, remarks: ZME62. At the destination end, 1 nm north of the line.
as filed, and in English
```
BNA UA /OV BNA315020/TM 2256/FL320/TP A319/TB CONS LGT OCNL MOD CHOP/RM ZME62
```
Report
a routine report filed through BNA
Where
20 nm northwest (315°) of BNA
Time
22:56 UTC
Height
at 32,000 ft
Aircraft
A319
Turbulence
continuous light occasional moderate chop
Remarks
ZME62

Winds aloft along the route, and the time en route the forecast for use 20:00–03:00 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 11 forecast points nearest it (PIR, ONL, FSD, OMA, DSM, BRL, COU, STL, CGI, EVV, BNA). A plus sign is a headwind, a minus sign a tailwind.

Height	Average wind	Head- or tailwind	Temperature	Ground speed	Time en route	Arrival
3,500 ft	220° at 16 kt	0		120 kt	6 h 38 min	2:27 am CDT (07:27 UTC)
5,500 ft	240° at 15 kt	−7 kt	17 °C	127 kt	6 h 16 min	2:05 am CDT (07:05 UTC)
7,500 ft	260° at 17 kt	−11 kt	14 °C	131 kt	6 h 04 min	1:53 am CDT (06:53 UTC)
9,500 ft	270° at 20 kt	−15 kt	10 °C	135 kt	5 h 53 min	1:42 am CDT (06:42 UTC)
11,500 ft	270° at 19 kt	−15 kt	7 °C	135 kt	5 h 53 min	1:42 am CDT (06:42 UTC)
13,500 ft	280° at 19 kt	−16 kt	2 °C	136 kt	5 h 51 min	1:40 am CDT (06:40 UTC)
15,500 ft	280° at 19 kt	−17 kt	-2 °C	137 kt	5 h 48 min	1:37 am CDT (06:37 UTC)
17,500 ft	280° at 20 kt	−18 kt	-7 °C	138 kt	5 h 46 min	1:35 am CDT (06:35 UTC)
18,000 ft FL180	280° at 20 kt	−18 kt	-8 °C	138 kt	5 h 46 min	1:35 am CDT (06:35 UTC)
24,000 ft FL240	280° at 22 kt	−21 kt	-19 °C	141 kt	5 h 38 min	1:27 am CDT (06:27 UTC)
30,000 ft FL300	290° at 34 kt	−33 kt	-33 °C	153 kt	5 h 12 min	1:01 am CDT (06:01 UTC)
34,000 ft FL340	290° at 42 kt	−41 kt	-42 °C	161 kt	4 h 56 min	12:45 am CDT (05:45 UTC)
39,000 ft FL390	290° at 51 kt	−50 kt	-51 °C	170 kt	4 h 41 min	12:30 am CDT (05:30 UTC)

Based on data from the 11th at 18:00 UTC; valid on the 12th at 00:00 UTC for use 20:00 to 03:00 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
PIR	used from 0 nm out; 25 nm from the line		L/V 17°	230/13 12°	220/22 6°	250/31 -9°	250/34 -21°	240/50 -35°	230/61 -43°	240/62 -51°
ONL	used from 50 nm out; 73 nm from the line		200/20 17°	230/26 14°	240/21 7°	250/27 -9°	260/32 -19°	240/44 -34°	240/56 -41°	250/62 -51°
FSD	used from 149 nm out; 53 nm from the line	200/16	220/20 17°	240/26 13°	230/19 6°	240/25 -9°	240/28 -20°	250/39 -33°	250/44 -43°	260/63 -52°
OMA	used from 199 nm out; 56 nm from the line	190/34	230/34 19°	250/25 12°	250/18 6°	250/22 -7°	250/28 -19°	260/34 -32°	260/39 -41°	280/56 -51°
DSM	used from 298 nm out; 36 nm from the line	200/32	240/27 17°	260/19 10°	260/16 5°	260/19 -7°	240/22 -19°	270/20 -32°	270/38 -42°	290/58 -53°
BRL	used from 397 nm out; 78 nm from the line	200/20	250/21 16°	240/22 10°	260/20 5°	270/16 -7°	290/22 -18°	320/41 -34°	320/56 -43°	310/68 -53°
COU	used from 447 nm out; 54 nm from the line	210/16	220/19 15°	240/33 10°	250/29 7°	280/21 -6°	280/19 -18°	300/34 -31°	300/40 -42°	300/60 -52°
STL	used from 497 nm out; 37 nm from the line	210/13	260/16 17°	270/21 10°	280/24 5°	310/20 -7°	320/22 -18°	320/44 -33°	320/59 -43°	310/69 -51°
CGI	used from 596 nm out; 51 nm from the line	250/10	290/12 17°	290/18 11°	300/22 5°	320/25 -8°	330/30 -18°	320/53 -33°	320/66 -42°	320/56 -50°
EVV	used from 695 nm out; 66 nm from the line	310/13	340/26 16°	330/29 10°	330/32 4°	330/30 -9°	340/38 -20°	330/60 -35°	320/57 -41°	330/39 -48°
BNA	used from 745 nm out; 25 nm from the line	280/13	340/34 16°	330/38 10°	330/44 5°	330/39 -8°	330/38 -19°	320/49 -34°	330/53 -40°	330/35 -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
PIR Pierre, SD	departure	IFR Sky: a broken layer at 800 feet, overcast at 1,200 feet	from the northeast (050°) at 9 knots	10+ mi	800 ft	1,744 ft	6:53 pm CDT (23:53 UTC)
YKN Yankton, SD	149 nm out, 5 nm southeast of the line	VFR	from the west-northwest (290°) at 8 knots	10+ mi	none	1,305 ft	23:56 UTC
SUX Sioux City, IA	209 nm out, 2 nm north of the line, tower	VFR	from the south-southwest (210°) at 7 knots	10+ mi	none	1,098 ft	23:52 UTC
ADU Audubon, IA	288 nm out, 8 nm north of the line	reported, no category	from the south (180°) at 6 knots	10+ mi	none	1,287 ft	00:35 UTC
GFZ Greenfield, IA	318 nm out, 3 nm north of the line	no report just now				1,363 ft
IRK Kirksville, MO	427 nm out, 3 nm south of the line	reported, no category	from the south (170°) at 6 knots	10+ mi	none	966 ft	23:55 UTC
STL St Louis, MO	556 nm out, 2 nm east of the line, tower	VFR Sky: a few clouds at 25,000 feet	from the southeast (130°) at 6 knots	10+ mi	none	617 ft	23:51 UTC
CPS Cahokia/St Louis, IL	576 nm out, 3 nm northwest of the line, tower	VFR	from the south-southeast (150°) at 3 knots	10+ mi	none	412 ft	23:53 UTC
MWA Marion, IL	646 nm out, 2 nm southwest of the line, tower	VFR	from the south-southwest (210°) at 5 knots	10+ mi	none	471 ft	00:35 UTC
CKV Clarksville, TN	745 nm out, 4 nm south of the line	VFR	from the west-southwest (240°) at 3 knots	10+ mi	none	549 ft	23:52 UTC
BNA Nashville, TN	destination	VFR Sky: a few clouds at 2,400 feet	variable at 3 knots	10+ mi	none	599 ft	6:53 pm CDT (23:53 UTC)

The highest airport on this list sits at 1,744 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.

At BNA when you get there the forecast at the estimated arrival, 12:30 am CDT (05:30 UTC)

Wind light and variable, visibility more than 6 miles, clear skies VFR

The whole forecast for BNA

From Sun 7:00 pm CDT (00:00 UTC): wind light and variable, visibility more than 6 miles, clear skies
From Mon 11:00 am CDT (16:00 UTC): wind from the west-southwest at 7 knots, visibility more than 6 miles, a few clouds at 20,000 feet
From Mon 8:00 pm CDT (01:00 UTC): wind from the south-southwest at 6 knots, visibility more than 6 miles, clear skies

The forecast for PIR, the departure

From Sun 8:00 pm CDT (01:00 UTC): wind from the northeast at 9 knots, visibility more than 6 miles, a broken layer at 800 feet, overcast at 1,200 feet
From Sun 10:00 pm CDT (03:00 UTC): wind from the northeast at 9 knots, visibility more than 6 miles, a broken layer at 1,700 feet
From Mon 7:00 am CDT (12:00 UTC): wind from the east-northeast at 9 knots, visibility more than 6 miles, a broken layer at 800 feet
From Mon 1:00 pm CDT (18:00 UTC): wind from the northwest at 9 knots, visibility more than 6 miles, a broken layer at 2,000 feet
From Mon 5:00 pm CDT (22:00 UTC): wind from the northwest at 14 knots, gusting to 23, visibility more than 6 miles, a broken layer at 3,500 feet

Temporary flight restrictions on the line or within 25 nm of it

6/0708 Goodlettsville, TN, Saturday, August 1, 2026 through Sunday, August 1, 2027 UTC 9 nm from the route, at the destination end · security · until 1 August · ZME

Daylight

Sunset at PIR 7:02 pm CDT (00:02 UTC), at BNA 6:15 pm CDT (23:15 UTC) (civil twilight ends 6:40 pm CDT (23:40 UTC)). At 120 knots the arrival at BNA is before sunrise there (6:50 am CDT (11:50 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 now, the upper Mississippi valley · loop National Weather Service

Radar now, the lower Mississippi valley · 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: Pierre Regional, Nashville International.