Boeing Fld/King County International to St. Pete-Clearwater International BFI → PIE
2,185 nautical miles (2,515 statute miles) east on a straight line, true course 108°, about 093° magnetic at the departure end (variation 15E). At 120 knots that is 14 h 46 min at the quickest height in today's winds (30,000 ft, a 28-knot tailwind), arriving about 1:28 am EDT (05:28 UTC), after sunset at the destination. 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 TANGO 1W: moderate turbulence above 18,000 ft from 18,000 ft to 39,000 ft. Over the route from 50 to 319 nm out.
- AIRMET ZULU 2C: moderate icing up to 18,000 ft. Over the route from 170 to 389 nm out.
- AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 170 to 718 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 369 to 709 nm out.
- AIRMET ZULU 2C: moderate icing up to 23,000 ft. Over the route from 409 to 679 nm out.
- AIRMET TANGO 4W: moderate turbulence above 18,000 ft (due to mountain wave) from 34,000 ft to 43,000 ft. Over the route from 718 to 918 nm out.
- AIRMET TANGO 2W: moderate turbulence below 18,000 ft (due to mountain wave) up to 22,000 ft. Over the route from 768 to 798 nm out.
- AIRMET TANGO 2W: 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 1128 to 1347 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 BFI.
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 14:00–21:00 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 17 forecast points nearest it (SEA, YKM, LWS, DLN, LND, BFF, GLD, SLN, ICT, TUL, FSM, LIT, MEM, JAN, MGM, TLH, PIE). 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 | 250° at 7 kt | −4 kt | 124 kt | 17 h 37 min | 4:19 am EDT (08:19 UTC) | |
| 5,500 ft | 270° at 12 kt | −9 kt | 129 kt | 16 h 56 min | 3:38 am EDT (07:38 UTC) | |
| 7,500 ft | 260° at 11 kt | −8 kt | 8 °C | 128 kt | 17 h 04 min | 3:46 am EDT (07:46 UTC) |
| 9,500 ft | 260° at 12 kt | −8 kt | 6 °C | 128 kt | 17 h 04 min | 3:46 am EDT (07:46 UTC) |
| 11,500 ft | 250° at 13 kt | −8 kt | 3 °C | 128 kt | 17 h 04 min | 3:46 am EDT (07:46 UTC) |
| 13,500 ft | 250° at 14 kt | −8 kt | -1 °C | 128 kt | 17 h 04 min | 3:46 am EDT (07:46 UTC) |
| 15,500 ft | 250° at 14 kt | −7 kt | -5 °C | 127 kt | 17 h 12 min | 3:54 am EDT (07:54 UTC) |
| 17,500 ft | 240° at 14 kt | −7 kt | -10 °C | 127 kt | 17 h 12 min | 3:54 am EDT (07:54 UTC) |
| 18,000 ft FL180 | 240° at 14 kt | −7 kt | -11 °C | 127 kt | 17 h 12 min | 3:54 am EDT (07:54 UTC) |
| 24,000 ft FL240 | 250° at 21 kt | −12 kt | -22 °C | 132 kt | 16 h 33 min | 3:15 am EDT (07:15 UTC) |
| 30,000 ft FL300 | 270° at 33 kt | −28 kt | -32 °C | 148 kt | 14 h 46 min | 1:28 am EDT (05:28 UTC) |
| 34,000 ft FL340 | 270° at 33 kt | −28 kt | -38 °C | 148 kt | 14 h 46 min | 1:28 am EDT (05:28 UTC) |
| 39,000 ft FL390 | 270° at 32 kt | −28 kt | -47 °C | 148 kt | 14 h 46 min | 1:28 am EDT (05:28 UTC) |
Based on data from the 12th at 12:00 UTC; valid on the 12th at 18:00 UTC for use 14:00 to 21:00 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| SEA | used from 0 nm out; 24 nm from the line | L/V | L/V 1° | 020/13 -2° | 020/27 -4° | 010/43 -14° | 360/54 -26° | 360/63 -40° | 010/60 -48° | 350/39 -50° |
| YKM | used from 50 nm out; 33 nm from the line | L/V | 350/9 0° | 040/20 -5° | 030/23 -8° | 020/41 -18° | 010/74 -27° | 010/73 -40° | 020/54 -44° | 350/9 -43° |
| LWS | used from 150 nm out; 54 nm from the line | L/V | L/V -2° | 030/6 -5° | 050/10 -10° | 110/19 -21° | 150/22 -31° | 130/11 -36° | 200/6 -37° | 220/21 -40° |
| DLN | used from 349 nm out; 56 nm from the line | L/V -3° | 170/16 -6° | 180/21 -18° | 190/27 -30° | 210/63 -33° | 210/62 -36° | 210/51 -42° | ||
| LND | used from 549 nm out; 73 nm from the line | 220/16 3° | 230/26 -1° | 210/30 -14° | 220/57 -26° | 220/60 -31° | 220/62 -38° | 220/52 -44° | ||
| BFF | used from 748 nm out; 96 nm from the line | 310/15 | 280/27 8° | 250/27 2° | 230/30 -12° | 240/52 -22° | 250/66 -32° | 240/78 -37° | 240/76 -43° | |
| GLD | used from 948 nm out; 67 nm from the line | 240/22 | 250/24 13° | 250/39 6° | 230/42 -8° | 230/55 -21° | 240/87 -30° | 240/96 -36° | 250/93 -48° | |
| SLN | used from 1098 nm out; 75 nm from the line | 210/26 | 250/36 22° | 240/39 14° | 240/38 7° | 240/42 -9° | 240/49 -20° | 260/75 -27° | 260/76 -36° | 270/71 -48° |
| ICT | used from 1197 nm out; 31 nm from the line | 200/26 | 240/31 21° | 230/30 14° | 240/30 7° | 250/38 -8° | 240/49 -19° | 260/73 -27° | 270/69 -37° | 270/63 -48° |
| TUL | used from 1297 nm out; 60 nm from the line | 210/24 | 220/29 18° | 240/17 14° | 250/16 8° | 260/28 -6° | 260/36 -18° | 270/63 -28° | 280/54 -37° | 290/46 -49° |
| FSM | used from 1397 nm out; 53 nm from the line | 210/15 | 230/31 18° | 230/26 12° | 240/22 8° | 260/26 -6° | 270/29 -16° | 280/56 -29° | 290/47 -37° | 310/41 -50° |
| LIT | used from 1497 nm out; 29 nm from the line | 230/23 | 250/23 17° | 250/18 11° | 250/18 7° | 250/27 -7° | 270/23 -15° | 290/50 -30° | 300/43 -38° | 320/38 -50° |
| MEM | used from 1597 nm out; 72 nm from the line | 240/14 | 260/23 16° | 250/22 11° | 250/20 7° | 270/24 -6° | 270/27 -16° | 310/49 -30° | 310/46 -39° | 320/43 -50° |
| JAN | used from 1647 nm out; 77 nm from the line | 210/8 | 230/13 18° | 240/10 11° | 260/11 6° | 280/16 -5° | 260/12 -15° | 330/34 -30° | 320/39 -40° | 340/34 -51° |
| MGM | used from 1796 nm out; 78 nm from the line | 350/14 | 320/18 17° | 320/17 11° | 300/14 5° | 330/13 -5° | 310/12 -17° | 330/29 -30° | 340/40 -40° | 350/32 -50° |
| TLH | used from 1946 nm out; 70 nm from the line | 360/24 | 350/19 18° | 340/18 11° | 320/14 6° | 360/12 -5° | 350/21 -17° | 350/29 -32° | 360/34 -41° | 340/33 -53° |
| PIE | used from 2096 nm out; 65 nm from the line | 360/14 | 010/20 18° | 320/11 13° | 290/16 8° | 340/11 -6° | 350/21 -17° | 360/39 -32° | 010/39 -42° | 350/17 -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 |
|---|---|---|---|---|---|---|---|
| BFI Seattle, WA | departure | no report just now | 21 ft | ||||
| MWH Moses Lake, WA | 120 nm out, 22 nm northeast of the line, tower | no report just now | 1,188 ft | ||||
| LWS Lewiston, ID | 230 nm out, 10 nm north of the line, tower | no report just now | 1,442 ft | ||||
| DUB Dubois, WY | 579 nm out, 14 nm south of the line | no report just now | 7,298 ft | ||||
| CPR Casper, WY | 718 nm out, 20 nm northeast of the line, tower | no report just now | 5,344 ft | ||||
| OIN Oberlin, KS | 1048 nm out, 2 nm north of the line | no report just now | 2,706 ft | ||||
| BEC Wichita, KS | 1247 nm out, 16 nm southwest of the line, tower | no report just now | 1,408 ft | ||||
| XNA Fayetteville/Springdale/Rogers, AR | 1407 nm out, 4 nm southeast of the line, tower | no report just now | 1,288 ft | ||||
| GWO Greenwood, MS | 1676 nm out, 3 nm southwest of the line, tower | no report just now | 162 ft | ||||
| ECP Panama City, FL | 1966 nm out, 3 nm southwest of the line, tower | no report just now | 68 ft | ||||
| AAF Apalachicola, FL | 2026 nm out, 6 nm west of the line | no report just now | 19 ft | ||||
| PIE St Petersburg-Clearwater, FL | destination | no report just now | 10 ft |
The highest airport on this list sits at 7,298 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At PIE when you get there the forecast at the estimated arrival, 1:28 am EDT (05:28 UTC)
PIE has no terminal forecast; use the nearest airport that does.
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 BFI 6:25 pm PDT (01:25 UTC), at PIE 7:04 pm EDT (23:04 UTC) (civil twilight ends 7:28 pm EDT (23:28 UTC)). At 120 knots the arrival at PIE is before sunrise there (7:29 am EDT (11:29 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: Boeing Fld/King County International, St. Pete-Clearwater International.