James M Cox Dayton International to MC Ghee Tyson Airport DAY → TYS
246 nautical miles (283 statute miles) south on a straight line, true course 177°, about 183° magnetic at the departure end (variation 6W). At 120 knots that is 1 h 32 min at the quickest height in today's winds (34,000 ft, a 40-knot tailwind), arriving about 7:37 am EDT (11:37 UTC), after sunset at the destination. Right now DAY is low IFR, wind from the southwest (230°) at 4 knots; TYS is VFR, wind from the west-southwest (240°) 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: 4 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 3E: low cloud or poor visibility (IFR conditions) (due to ceilings below 1,000 ft, visibility below 3 miles, precipitation, mist, fog). Over the whole route.
- AIRMET SIERRA 4E: mountains obscured by cloud (due to mountains obscured by clouds, mist). Over the last 89 nm of the route.
- AIRMET TANGO 3W: moderate turbulence below 18,000 ft (due to mountain wave) up to 6,000 ft. 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 DAY.
Pilot reports along the route within 50 nm of the line, last three hours, the serious ones first
- A21N at 33,000 ft, 25 nm north, 4:07 am EDT (08:07 UTC): light chop turbulence. At the departure end, 25 nm north of the line.
as filed, and in English
DAY UA /OV ROD/TM 0807/FL330/TP A21N/TB OCNL LT CHOP
- Report
- a routine report filed through DAY
- Where
- over ROD
- Time
- 08:07 UTC
- Height
- at 33,000 ft
- Aircraft
- A21N
- Turbulence
- occasional lt chop
- B763 at 100 ft, 26 nm west, 5:05 am EDT (09:05 UTC): sky obscured, remarks: during the climb. 49 nm along the route, 26 nm west of the line.
as filed, and in English
CVG UA /OV CVG270001/TM 0905/FL001/TP B763/SK VV001/RM DURC
- Report
- a routine report filed through CVG
- Where
- 1 nm west (270°) of CVG
- Time
- 09:05 UTC
- Height
- at 100 ft
- Aircraft
- B763
- Sky
- sky obscured from 100 ft
- Remarks
- during the climb
- B763 at 200 ft, 26 nm west, 4:05 am EDT (08:05 UTC): sky obscured, remarks: during the climb. 49 nm along the route, 26 nm west of the line.
as filed, and in English
CVG UA /OV CVG270001/TM 0805/FL002/TP B763/SK VV002/RM DURC
- Report
- a routine report filed through CVG
- Where
- 1 nm west (270°) of CVG
- Time
- 08:05 UTC
- Height
- at 200 ft
- Aircraft
- B763
- Sky
- sky obscured from 200 ft
- Remarks
- during the climb
- B752 climbing, 30 nm west, 3:37 am EDT (07:37 UTC): overcast. 49 nm along the route, 30 nm west of the line.
as filed, and in English
CVG UA /OV 5 W CVG/TM 0737/FLDURC/TP B752/SK B001 OVC T015
- Report
- a routine report filed through CVG
- Where
- 5 west cvg
- Time
- 07:37 UTC
- Height
- during the climb
- Aircraft
- B752
- Sky
- B001 overcast T015
- CRJ7 at 5,000 ft, 22 nm west, 5:37 am EDT (09:37 UTC): scattered clouds above 10,000 ft, remarks: during the climb. 108 nm along the route, 22 nm west of the line.
as filed, and in English
LEX UA /OV HYK330010/TM 0937/FL050/TP CRJ7/SK SCT001/RM DURC
- Report
- a routine report filed through LEX
- Where
- 10 nm northwest (330°) of HYK
- Time
- 09:37 UTC
- Height
- at 5,000 ft
- Aircraft
- CRJ7
- Sky
- scattered clouds from 100 ft
- Remarks
- during the climb
Winds aloft along the route, and the time en route the forecast for use 08:00–15:00 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 2 forecast points nearest it (CVG, TYS). 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 | 320° at 21 kt | −17 kt | 137 kt | 1 h 48 min | 7:53 am EDT (11:53 UTC) | |
| 6,500 ft | 330° at 25 kt | −22 kt | 14 °C | 142 kt | 1 h 44 min | 7:49 am EDT (11:49 UTC) |
| 8,500 ft | 340° at 26 kt | −24 kt | 10 °C | 144 kt | 1 h 42 min | 7:47 am EDT (11:47 UTC) |
| 10,500 ft | 330° at 24 kt | −21 kt | 6 °C | 141 kt | 1 h 45 min | 7:50 am EDT (11:50 UTC) |
| 12,500 ft | 320° at 22 kt | −19 kt | 3 °C | 139 kt | 1 h 46 min | 7:51 am EDT (11:51 UTC) |
| 14,500 ft | 320° at 23 kt | −19 kt | -1 °C | 139 kt | 1 h 46 min | 7:51 am EDT (11:51 UTC) |
| 16,500 ft | 320° at 25 kt | −18 kt | -4 °C | 138 kt | 1 h 47 min | 7:52 am EDT (11:52 UTC) |
| 18,000 ft FL180 | 310° at 26 kt | −18 kt | -6 °C | 138 kt | 1 h 47 min | 7:52 am EDT (11:52 UTC) |
| 24,000 ft FL240 | 310° at 33 kt | −22 kt | -19 °C | 142 kt | 1 h 44 min | 7:49 am EDT (11:49 UTC) |
| 30,000 ft FL300 | 320° at 35 kt | −27 kt | -34 °C | 147 kt | 1 h 40 min | 7:45 am EDT (11:45 UTC) |
| 34,000 ft FL340 | 320° at 51 kt | −40 kt | -42 °C | 160 kt | 1 h 32 min | 7:37 am EDT (11:37 UTC) |
| 39,000 ft FL390 | 320° at 50 kt | −38 kt | -51 °C | 158 kt | 1 h 33 min | 7:38 am EDT (11:38 UTC) |
Based on data from the 12th at 06:00 UTC; valid on the 12th at 12:00 UTC for use 08:00 to 15:00 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| CVG | used from 0 nm out; 35 nm from the line | 300/19 | 310/23 15° | 320/20 9° | 310/18 3° | 300/26 -6° | 290/36 -19° | 310/32 -34° | 310/53 -43° | 310/61 -51° |
| TYS | used from 148 nm out; 74 nm from the line | 330/16 | 350/32 14° | 350/37 9° | 340/30 5° | 330/28 -6° | 340/36 -19° | 330/40 -33° | 330/51 -41° | 330/36 -51° |
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 |
|---|---|---|---|---|---|---|---|
| DAY Dayton, OH | departure | low IFR Sky: sky obscured at 200 feet Weather: fog | from the southwest (230°) at 4 knots | 0.25 mi | 200 ft | 1,009 ft | 5:56 am EDT (09:56 UTC) |
| ILN Wilmington, OH | 30 nm out, 19 nm east of the line, tower | low IFR Sky: overcast at 400 feet Weather: mist | from the west-northwest (290°) at 5 knots | 5 mi | 400 ft | 1,076 ft | 09:54 UTC |
| LUK Cincinnati, OH | 49 nm out, 11 nm west of the line, tower | low IFR Sky: overcast at 200 feet Weather: mist | from the south (170°) at 3 knots | 2 mi | 200 ft | 481 ft | 10:01 UTC |
| LEX Lexington, KY | 108 nm out, 24 nm west of the line, tower | low IFR Sky: sky obscured at 200 feet Weather: fog | from the south-southwest (200°) at 4 knots | 0.25 mi | 200 ft | 979 ft | 09:51 UTC |
| RGA Richmond, KY | 138 nm out, 12 nm west of the line | low IFR Sky: overcast at 200 feet Weather: mist | from the southwest (230°) at 4 knots | 0.75 mi | 200 ft | 1,002 ft | 09:55 UTC |
| LOZ London, KY | 167 nm out, 2 nm south of the line | VFR | from the north (010°) at 9 knots, gusting to 16 | 10+ mi | none | 1,212 ft | 20:18 UTC |
| JAU Jacksboro, TN | 216 nm out, 7 nm west of the line | VFR | calm | 7 mi | none | 1,179 ft | 09:55 UTC |
| TYS Knoxville, TN | destination | VFR Sky: a few clouds at 3,300 feet | from the west-southwest (240°) at 4 knots | 10+ mi | none | 986 ft | 5:53 am EDT (09:53 UTC) |
The highest airport on this list sits at 1,212 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At TYS when you get there the forecast at the estimated arrival, 7:37 am EDT (11:37 UTC)
Wind from the southwest at 4 knots, visibility more than 6 miles, scattered clouds at 2,500 feet VFR
At times between Mon 5:00 am EDT (09:00 UTC) and 9:00 am EDT (13:00 UTC): a broken layer at 2,500 feet marginal VFR
The whole forecast for TYS
- From Mon 2:00 am EDT (06:00 UTC): wind from the southwest at 4 knots, visibility more than 6 miles, overcast at 2,500 feet
- From Mon 5:00 am EDT (09:00 UTC): wind from the southwest at 4 knots, visibility more than 6 miles, scattered clouds at 2,500 feet
- At times between Mon 5:00 am EDT (09:00 UTC) and 9:00 am EDT (13:00 UTC): a broken layer at 2,500 feet
- From Mon 12:00 pm EDT (16:00 UTC): wind from the west-southwest at 5 knots, visibility more than 6 miles, clear skies
The forecast for DAY, the departure
- From Mon 4:00 am EDT (08:00 UTC): wind light and variable, visibility more than 6 miles, overcast at 400 feet
- From Mon 6:00 am EDT (10:00 UTC): wind from the west-southwest at 3 knots, visibility 3 miles, mist, scattered clouds at 200 feet
- At times between Mon 6:00 am EDT (10:00 UTC) and 9:00 am EDT (13:00 UTC): visibility 1 mile, mist
- From Mon 10:00 am EDT (14:00 UTC): wind from the south-southwest at 11 knots, visibility more than 6 miles, scattered clouds at 25,000 feet
Temporary flight restrictions on the line or within 25 nm of it
- 6/8029 Cincinnati, OH, Friday, October 9, 2026 through Monday, October 12, 2026 Local 18 nm from the route, 49 nm along the route · a VIP movement · until 12 October · ZID
Daylight
Sunset at DAY 7:02 pm EDT (23:02 UTC), at TYS 7:04 pm EDT (23:04 UTC) (civil twilight ends 7:30 pm EDT (23:30 UTC)). At 120 knots the arrival at TYS is before sunrise there (7:39 am EDT (11:39 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
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: James M Cox Dayton International, MC Ghee Tyson Airport.