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 46 min at the quickest height in today's winds (39,000 ft, a 47-knot tailwind), arriving about 7:54 am CDT (12:54 UTC). Right now PIR is low IFR, wind from the northeast (050°) at 8 knots; BNA 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: 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 79 nm of the route.
- 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 149 to 487 nm out.
- AIRMET SIERRA 3E: low cloud or poor visibility (IFR conditions) (due to ceilings below 1,000 ft, visibility below 3 miles, precipitation, mist, fog). Over the last 0 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
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 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 | 240° at 25 kt | −8 kt | 128 kt | 6 h 13 min | 9:21 am CDT (14:21 UTC) | |
| 5,500 ft | 240° at 23 kt | −8 kt | 20 °C | 128 kt | 6 h 13 min | 9:21 am CDT (14:21 UTC) |
| 7,500 ft | 250° at 19 kt | −10 kt | 14 °C | 130 kt | 6 h 07 min | 9:15 am CDT (14:15 UTC) |
| 9,500 ft | 260° at 16 kt | −10 kt | 10 °C | 130 kt | 6 h 07 min | 9:15 am CDT (14:15 UTC) |
| 11,500 ft | 260° at 14 kt | −9 kt | 7 °C | 129 kt | 6 h 10 min | 9:18 am CDT (14:18 UTC) |
| 13,500 ft | 260° at 16 kt | −11 kt | 2 °C | 131 kt | 6 h 04 min | 9:12 am CDT (14:12 UTC) |
| 15,500 ft | 260° at 18 kt | −13 kt | -2 °C | 133 kt | 5 h 59 min | 9:07 am CDT (14:07 UTC) |
| 17,500 ft | 260° at 21 kt | −15 kt | -6 °C | 135 kt | 5 h 53 min | 9:01 am CDT (14:01 UTC) |
| 18,000 ft FL180 | 260° at 21 kt | −16 kt | -7 °C | 136 kt | 5 h 51 min | 8:59 am CDT (13:59 UTC) |
| 24,000 ft FL240 | 270° at 27 kt | −20 kt | -19 °C | 140 kt | 5 h 41 min | 8:49 am CDT (13:49 UTC) |
| 30,000 ft FL300 | 270° at 36 kt | −30 kt | -33 °C | 150 kt | 5 h 18 min | 8:26 am CDT (13:26 UTC) |
| 34,000 ft FL340 | 280° at 49 kt | −43 kt | -41 °C | 163 kt | 4 h 53 min | 8:01 am CDT (13:01 UTC) |
| 39,000 ft FL390 | 280° at 51 kt | −47 kt | -50 °C | 167 kt | 4 h 46 min | 7:54 am CDT (12:54 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| PIR | used from 0 nm out; 25 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° | |
| ONL | used from 50 nm out; 73 nm from the line | 210/31 20° | 230/27 13° | 230/18 7° | 220/19 -8° | 240/26 -20° | 250/44 -35° | 270/52 -39° | 260/57 -47° | |
| FSD | used from 149 nm out; 53 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° |
| OMA | used from 199 nm out; 56 nm from the line | 220/47 | 240/33 19° | 250/18 11° | 230/17 6° | 260/29 -8° | 250/33 -19° | 250/51 -33° | 260/61 -40° | 270/62 -49° |
| DSM | used from 298 nm out; 36 nm from the line | 230/40 | 250/33 17° | 250/18 12° | 240/17 5° | 260/28 -8° | 270/34 -19° | 260/41 -33° | 260/55 -41° | 270/62 -51° |
| BRL | used from 397 nm out; 78 nm from the line | 230/24 | 240/29 15° | 290/16 10° | 280/15 4° | 260/23 -7° | 260/32 -19° | 260/36 -33° | 280/48 -41° | 280/59 -52° |
| COU | used from 447 nm out; 54 nm from the line | 230/31 | 230/30 15° | 260/16 11° | 270/14 6° | 260/24 -6° | 270/27 -18° | 270/37 -32° | 280/49 -41° | 290/56 -51° |
| STL | used from 497 nm out; 37 nm from the line | 250/24 | 250/24 16° | 260/23 9° | 270/16 6° | 260/25 -6° | 270/29 -19° | 290/34 -33° | 290/48 -41° | 290/54 -51° |
| CGI | used from 596 nm out; 51 nm from the line | 240/20 | 270/15 15° | 280/15 11° | 300/13 6° | 290/20 -6° | 280/24 -18° | 300/34 -32° | 300/47 -41° | 310/49 -51° |
| EVV | used from 695 nm out; 66 nm from the line | 280/15 | 290/12 17° | 310/16 10° | 320/13 5° | 310/22 -6° | 320/26 -18° | 320/38 -33° | 310/56 -41° | 320/55 -51° |
| BNA | used from 745 nm out; 25 nm from the line | 310/20 | 340/20 17° | 330/24 10° | 340/22 5° | 330/26 -6° | 340/29 -18° | 330/52 -33° | 320/62 -41° | 340/45 -50° |
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 | low IFR Sky: overcast at 400 feet Weather: light rain, mist | from the northeast (050°) at 8 knots | 2 mi | 400 ft | 1,744 ft | 2:53 am CDT (07:53 UTC) |
| YKN Yankton, SD | 149 nm out, 5 nm southeast of the line | VFR | from the west-northwest (290°) at 4 knots | 10+ mi | none | 1,305 ft | 07:56 UTC |
| SUX Sioux City, IA | 209 nm out, 2 nm north of the line, tower | VFR | from the west-southwest (250°) at 3 knots | 10+ mi | none | 1,098 ft | 07:52 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 | 07:55 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 (190°) at 6 knots | 10+ mi | none | 966 ft | 07:55 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 southwest (220°) at 6 knots | 10+ mi | none | 617 ft | 07:51 UTC |
| CPS Cahokia/St Louis, IL | 576 nm out, 3 nm northwest of the line, tower | VFR | calm | 10+ mi | none | 412 ft | 07:53 UTC |
| MWA Marion, IL | 646 nm out, 2 nm southwest of the line, tower | VFR | from the south-southwest (210°) at 4 knots | 10+ mi | none | 471 ft | 07:55 UTC |
| CKV Clarksville, TN | 745 nm out, 4 nm south of the line | low IFR Weather: fog | calm | 0.5 mi | none | 549 ft | 07:52 UTC |
| BNA Nashville, TN | destination | VFR | calm | 9 mi | none | 599 ft | 2:53 am CDT (07:53 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, 7:54 am CDT (12:54 UTC)
Wind from the south at 2 knots, visibility 5 miles, mist, scattered clouds at 300 feet marginal VFR
The whole forecast for BNA
- From Mon 1:00 am CDT (06:00 UTC): wind from the south at 4 knots, visibility 6 miles, mist, clear skies
- From Mon 7:00 am CDT (12:00 UTC): wind from the south at 2 knots, visibility 5 miles, mist, scattered clouds at 300 feet
- From Mon 9:00 am CDT (14:00 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 Mon 3:00 am CDT (08:00 UTC): wind from the northeast at 10 knots, visibility 6 miles, mist, overcast at 600 feet
- At times between Mon 3:00 am CDT (08:00 UTC) and 7:00 am CDT (12:00 UTC): visibility 2 miles, light drizzle, mist, overcast at 400 feet
- From Mon 11:00 am CDT (16:00 UTC): wind from the north at 6 knots, visibility more than 6 miles, overcast at 800 feet
- From Mon 1:00 pm CDT (18:00 UTC): wind from the northwest at 10 knots, visibility more than 6 miles, overcast at 1,300 feet
- From Mon 5:00 pm CDT (22:00 UTC): wind from the north-northwest at 14 knots, gusting to 22, visibility more than 6 miles, overcast at 1,800 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 7:00 pm CDT (00:00 UTC), at BNA 6:15 pm CDT (23:15 UTC) (civil twilight ends 6:40 pm CDT (23:40 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: Pierre Regional, Nashville International.