Plan a flight · Sun 8:58 pm EDT (00:58 UTC)

Louisville Muhammad Ali International to Thief River Falls Regional SDF → TVF

748 nautical miles (861 statute miles) northwest on a straight line, true course 326°, about 331° magnetic at the departure end (variation 5W). At 120 knots that is 6 h 27 min at the quickest height in today's winds (4,500 ft, a 4-knot headwind), arriving about 2:25 am CDT (07:25 UTC), after sunset at the destination. Right now SDF is marginal VFR, wind from the west-southwest (250°) at 3 knots; TVF is IFR, wind from the north-northeast (020°) at 9 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: 395 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 ZULU 4C: moderate icing up to 20,000 ft. Over the last 70 nm of the route.
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 last 60 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 SDF.

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

E170 climbing, 0 nm north, 6:26 pm EDT (22:26 UTC): a routine report with nothing remarked on. At the departure end, 0 nm north of the line.
as filed, and in English
```
SDF UA /OV SDF/TM 2226/FLDURC/TP E170/SK B022 T036
```
Report
a routine report filed through SDF
Where
over SDF
Time
22:26 UTC
Height
during the climb
Aircraft
E170
Sky
B022 T036
M600 at 1,800 ft, 5 nm northeast, 6:12 pm EDT (22:12 UTC): overcast above 1,800 ft. At the departure end, 5 nm northeast of the line.
as filed, and in English
```
LOU UA /OV DURD/TM 2212/FL018/TP M600/SK OVC018-TOPO37
```
Report
a routine report filed through LOU
Where
over DURD
Time
22:12 UTC
Height
at 1,800 ft
Aircraft
M600
Sky
OVC018-TOPO37
B38M at 23,700 ft, 36 nm southwest, 7:51 pm EDT (23:51 UTC): light turbulence. 80 nm along the route, 36 nm southwest of the line.
as filed, and in English
```
IND UA /OV TTH190030/TM 2351/FL237/TP B38M/TB LGT
```
Report
a routine report filed through IND
Where
30 nm south (190°) of TTH
Time
23:51 UTC
Height
at 23,700 ft
Aircraft
B38M
Turbulence
light
E170 at 23,000 ft, 28 nm northeast, 7:14 pm EDT (23:14 UTC): light turbulence. 120 nm along the route, 28 nm northeast of the line.
as filed, and in English
```
IND UA /OV VHP315020/TM 2314/FL230/TP E170/TB LGT
```
Report
a routine report filed through IND
Where
20 nm northwest (315°) of VHP
Time
23:14 UTC
Height
at 23,000 ft
Aircraft
E170
Turbulence
light
B39M at 35,000 ft, 45 nm northeast, 8:29 pm EDT (00:29 UTC): no turbulence, remarks: smooth. 210 nm along the route, 45 nm northeast of the line.
as filed, and in English
```
IKK UA /OV CGT/TM 0029/FL350/TP B39M/TB NEG/RM SMOOTH
```
Report
a routine report filed through IKK
Where
over CGT
Time
00:29 UTC
Height
at 35,000 ft
Aircraft
B39M
Turbulence
none
Remarks
smooth
PC12 at 20,000 ft, 40 nm northeast, 7:55 pm EDT (23:55 UTC): light rime icing, -13 °C. 619 nm along the route, 40 nm northeast of the line.
as filed, and in English
```
GPZ UA /OV GPZ160020/TM 2355/FL200/TP PC12/SK TOP200/TA M13/IC LGT RIME
```
Report
a routine report filed through GPZ
Where
20 nm south (160°) of GPZ
Time
23:55 UTC
Height
at 20,000 ft
Aircraft
PC12
Sky
TOP200
Temperature
−13 °C
Icing
light rime
CRJ7 at 18,000 ft, 41 nm southwest, 7:41 pm EDT (23:41 UTC): light rime icing from 18,000 ft to 20,000 ft, -13 °C, remarks: during the descent. 669 nm along the route, 41 nm southwest of the line.
as filed, and in English
```
FAR UA /OV FAR090050/TM 2341/FL180/TP CRJ7/SK BASE180-TOP200/TA M13/IC LGT RIME 180-200/RM DURD
```
Report
a routine report filed through FAR
Where
50 nm east (090°) of FAR
Time
23:41 UTC
Height
at 18,000 ft
Aircraft
CRJ7
Sky
BASE180-TOP200
Temperature
−13 °C
Icing
light rime from 18,000 ft to 20,000 ft
Remarks
during the descent
CRJ7 at 1,500 ft, 39 nm west, 8:01 pm EDT (00:01 UTC): overcast above 1,500 ft. At the destination end, 39 nm west of the line.
as filed, and in English
```
GFK UA /OV GFK090002/TM 0001/FL015/TP CRJ7/SK OVC015
```
Report
a routine report filed through GFK
Where
2 nm east (090°) of GFK
Time
00:01 UTC
Height
at 1,500 ft
Aircraft
CRJ7
Sky
overcast from 1,500 ft
PC12 at 1,500 ft, 41 nm west, 7:45 pm EDT (23:45 UTC): overcast above 1,500 ft, 6 °C. At the destination end, 41 nm west of the line.
as filed, and in English
```
GFK UA /OV GFK350001/TM 2345/FL015/TP PC12/SK OVC015/TA 06
```
Report
a routine report filed through GFK
Where
1 nm north (350°) of GFK
Time
23:45 UTC
Height
at 1,500 ft
Aircraft
PC12
Sky
overcast from 1,500 ft
Temperature
6 °C

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 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 (LOU, IND, JOT, DBQ, LSE, MSP, AXN, GFK). 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	250° at 13 kt	+4 kt		116 kt	6 h 27 min	2:25 am CDT (07:25 UTC)
6,500 ft	270° at 16 kt	+9 kt	15 °C	111 kt	6 h 44 min	2:42 am CDT (07:42 UTC)
8,500 ft	270° at 16 kt	+11 kt	11 °C	109 kt	6 h 52 min	2:50 am CDT (07:50 UTC)
10,500 ft	280° at 15 kt	+12 kt	7 °C	108 kt	6 h 56 min	2:54 am CDT (07:54 UTC)
12,500 ft	290° at 16 kt	+13 kt	4 °C	107 kt	6 h 59 min	2:57 am CDT (07:57 UTC)
14,500 ft	290° at 18 kt	+15 kt	-1 °C	105 kt	7 h 07 min	3:05 am CDT (08:05 UTC)
16,500 ft	290° at 20 kt	+17 kt	-6 °C	103 kt	7 h 16 min	3:14 am CDT (08:14 UTC)
18,000 ft FL180	290° at 22 kt	+18 kt	-10 °C	102 kt	7 h 20 min	3:18 am CDT (08:18 UTC)
24,000 ft FL240	300° at 30 kt	+28 kt	-20 °C	92 kt	8 h 08 min	4:06 am CDT (09:06 UTC)
30,000 ft FL300	300° at 43 kt	+41 kt	-36 °C	79 kt	9 h 28 min	5:26 am CDT (10:26 UTC)
34,000 ft FL340	300° at 51 kt	+48 kt	-44 °C	72 kt	10 h 23 min	6:21 am CDT (11:21 UTC)
39,000 ft FL390	300° at 66 kt	+60 kt	-52 °C	60 kt	12 h 28 min	8:26 am CDT (13:26 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
LOU	used from 0 nm out; 25 nm from the line	320/15	340/24 14°	330/28 9°	340/34 4°	340/37 -9°	340/42 -20°	320/39 -35°	320/45 -39°	330/40 -47°
IND	used from 50 nm out; 35 nm from the line	320/10	350/30 16°	350/32 10°	350/30 4°	340/31 -10°	340/42 -21°	340/49 -37°	320/46 -41°	320/47 -47°
JOT	used from 150 nm out; 59 nm from the line	230/11	290/12 16°	300/19 10°	320/19 4°	300/17 -9°	330/31 -20°	320/49 -37°	320/53 -45°	320/67 -49°
DBQ	used from 299 nm out; 39 nm from the line	220/23	240/22 16°	240/24 10°	260/18 5°	270/16 -8°	290/27 -19°	310/42 -35°	320/55 -44°	300/71 -52°
LSE	used from 349 nm out; 50 nm from the line	220/33	250/29 17°	250/15 9°	260/12 6°	280/21 -9°	280/33 -20°	300/43 -36°	310/56 -45°	300/79 -53°
MSP	used from 499 nm out; 30 nm from the line	200/28	240/30 19°	240/24 12°	240/17 5°	270/24 -10°	270/33 -20°	280/48 -35°	290/55 -45°	280/84 -54°
AXN	used from 599 nm out; 62 nm from the line	L/V	220/23 17°	230/24 12°	240/25 5°	260/32 -11°	260/40 -21°	270/50 -35°	270/57 -45°	270/81 -55°
GFK	used from 699 nm out; 57 nm from the line	050/18	L/V 10°	240/20 7°	240/36 1°	250/47 -11°	260/53 -21°	270/59 -36°	270/65 -47°	260/88 -56°

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
SDF Louisville, KY	departure	marginal VFR Sky: a broken layer at 3,000 feet	from the west-southwest (250°) at 3 knots	10+ mi	3,000 ft	500 ft	7:56 pm EDT (23:56 UTC)
BMG Bloomington, IN	70 nm out, 2 nm west of the line, tower	VFR	calm	10+ mi	none	845 ft	00:53 UTC
HUF Terre Haute, IN	110 nm out, 18 nm southwest of the line, tower	VFR	calm	10+ mi	none	589 ft	00:53 UTC
DNV Danville, IL	150 nm out, 2 nm southwest of the line	no report just now				696 ft
RFD Chicago/Rockford, IL	289 nm out, 14 nm east of the line, tower	VFR Sky: a few clouds at 25,000 feet	calm	10+ mi	none	742 ft	00:54 UTC
MRJ Mineral Point, WI	349 nm out, 2 nm southwest of the line	no report just now				1,170 ft
LSE La Crosse, WI	419 nm out, 5 nm northwest of the line, tower	VFR	from the south-southwest (200°) at 7 knots	10+ mi	none	655 ft	00:53 UTC
STP St Paul, MN	519 nm out, 23 nm southwest of the line, tower	VFR	from the south (170°) at 6 knots	10+ mi	none	705 ft	00:53 UTC
ANE Minneapolis, MN	539 nm out, 20 nm southwest of the line, tower	VFR	from the south-southeast (150°) at 4 knots	10+ mi	none	912 ft	00:45 UTC
BRD Brainerd, MN	619 nm out, 1 nm southwest of the line	VFR	from the north (360°) at 7 knots	10+ mi	none	1,232 ft	00:53 UTC
FSE Fosston, MN	719 nm out, 7 nm southwest of the line	low IFR Sky: overcast at 300 feet	from the north-northeast (030°) at 12 knots	10+ mi	300 ft	1,278 ft	00:55 UTC
TVF Thief River Falls, MN	destination	IFR Sky: overcast at 500 feet Weather: light rain	from the north-northeast (020°) at 9 knots	10+ mi	500 ft	1,118 ft	6:56 pm CDT (23:56 UTC)

The highest airport on this list sits at 1,278 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.

At TVF when you get there the forecast at the estimated arrival, 2:25 am CDT (07:25 UTC)

Wind from the north at 12 knots, visibility more than 6 miles, overcast at 500 feet IFR

At times between Sun 11:00 pm CDT (04:00 UTC) and 3:00 am CDT (08:00 UTC): overcast at 300 feet low IFR

The whole forecast for TVF

From Sun 7:00 pm CDT (00:00 UTC): wind from the north at 12 knots, visibility more than 6 miles, overcast at 500 feet
At times between Sun 11:00 pm CDT (04:00 UTC) and 3:00 am CDT (08:00 UTC): overcast at 300 feet
From Mon 7:00 am CDT (12:00 UTC): wind from the northeast at 15 knots, visibility more than 6 miles, overcast at 500 feet
30% chance between Mon 7:00 am CDT (12:00 UTC) and 1:00 pm CDT (18:00 UTC): light rain showers
From Mon 1:00 pm CDT (18:00 UTC): wind from the northeast at 12 knots, visibility more than 6 miles, light rain showers, overcast at 700 feet

The forecast for SDF, the departure

From Sun 8:00 pm EDT (00:00 UTC): wind from the west-northwest at 5 knots, visibility more than 6 miles, a broken layer at 2,500 feet
From Sun 8:30 pm EDT (00:30 UTC): wind from the southwest at 3 knots, visibility more than 6 miles, clear skies
From Mon 6:00 am EDT (10:00 UTC): wind from the south-southeast at 3 knots, visibility 4 miles, mist, clear skies
From Mon 9:00 am EDT (13:00 UTC): wind from the south-southwest at 6 knots, visibility more than 6 miles, clear skies

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

6/6656 ANOKA, MN, Monday, October 5, 2026 through Monday, October 19, 2026 Local 22 nm from the route, 539 nm along the route · security · until 19 October · ZMP

Daylight

Sunset at SDF 7:09 pm EDT (23:09 UTC), at TVF 6:42 pm CDT (23:42 UTC) (civil twilight ends 7:13 pm CDT (00:13 UTC)). At 120 knots the arrival at TVF is before sunrise there (7:39 am CDT (12:39 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 central Great Lakes · loop National Weather Service

Radar now, the upper 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: Louisville Muhammad Ali International, Thief River Falls Regional.