The U.S. aircraft register, updated daily
Plan a flight · Mon 8:45 am EDT (12:45 UTC)

Washington Dulles International to Bremerton Ntl Airport IAD → PWT

2,017 nautical miles (2,321 statute miles) northwest on a straight line, true course 300°, about 310° magnetic at the departure end (variation 10W). At 120 knots that is 17 h 51 min at the quickest height in today's winds (4,500 ft, a 7-knot headwind), arriving about 11:36 pm PDT (06:36 UTC), after sunset at the destination. Right now IAD is VFR, wind from the northwest (320°) at 11 knots, gusting to 18; PWT 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: 2 flights in the DOT's last twelve reported months, the route's page.

The return flight

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

  • SIGMET C18C: thunderstorms (a convective SIGMET) up to 36,000 ft, moving from the southwest at 40 knots, until 9:55 am EDT (13:55 UTC). Over the route from 1058 to 1128 nm out.
    as issued
    WSUS32 KKCI 121155
    MKCC WST 121155
    CONVECTIVE SIGMET 18C
    VALID UNTIL 1355Z
    SD ND
    FROM 50NE BIS-70W FAR-40N PIR-40N DPR-50NE BIS
    AREA TS MOV FROM 22040KT. TOPS TO FL360.
  • AIRMET SIERRA 3E: low cloud or poor visibility (IFR conditions) (due to ceilings below 1,000 ft, visibility below 3 miles, precipitation, mist). Over the first 399 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). Near the route, at the departure end.
  • AIRMET TANGO 3W: moderate turbulence above 18,000 ft from 24,000 ft to 33,000 ft. Over the first 130 nm of the route.
  • AIRMET TANGO 3W: moderate turbulence below 18,000 ft (due to mountain wave) up to 6,000 ft. Over the first 100 nm of the route.
  • AIRMET SIERRA 4E: mountains obscured by cloud (due to mountains obscured by clouds, mist). Over the route from 40 to 160 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 859 to 1627 nm out.
  • AIRMET ZULU 2C: moderate icing up to 23,000 ft. Over the route from 1258 to 1348 nm out.
  • AIRMET ZULU 2C: moderate icing up to 18,000 ft. Over the route from 1358 to 1807 nm out.
  • AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 1448 to 1767 nm out.
  • AIRMET TANGO 1W: moderate turbulence above 18,000 ft from 18,000 ft to 39,000 ft. Over the route from 1627 to 1967 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 IAD.

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

  • B783 at 5,000 ft, 30 nm northeast, 8:30 am EDT (12:30 UTC): a routine report with nothing remarked on. At the departure end, 30 nm northeast of the line.
    as filed, and in English
    BWI UA /OV BAL280010/TM 1230/FL50/TP B783/SK BASE 028 TOP 040
    Report
    a routine report filed through BWI
    Where
    10 nm west (280°) of BAL
    Time
    12:30 UTC
    Height
    at 5,000 ft
    Aircraft
    B783
    Sky
    base 2,800 ft top 4,000 ft
  • E170 at 1,000 ft, 20 nm east, 7:32 am EDT (11:32 UTC): a broken layer above 1,200 ft. At the departure end, 20 nm east of the line.
    as filed, and in English
    DCA UA /OV DCA/TM 1132/FL010/TP E170/SK BKN012
    Report
    a routine report filed through DCA
    Where
    over DCA
    Time
    11:32 UTC
    Height
    at 1,000 ft
    Aircraft
    E170
    Sky
    a broken layer from 1,200 ft
  • B39M at 1,200 ft, 39 nm east, 7:10 am EDT (11:10 UTC): remarks: base 1200FT tops 2000FT. At the departure end, 39 nm east of the line.
    as filed, and in English
    BWI UA /OV BWI/TM 1110/FL012/TP B39M/RM BASE 1200FT TOPS 2000FT
    Report
    a routine report filed through BWI
    Where
    over BWI
    Time
    11:10 UTC
    Height
    at 1,200 ft
    Aircraft
    B39M
    Remarks
    base 1200FT tops 2000FT
  • B39M descending, 0 nm northeast, 6:42 am EDT (10:42 UTC): overcast above 4,000 ft. At the departure end, 0 nm northeast of the line.
    as filed, and in English
    IAD UA /OV RWY 1R/TM 1042/FLDURD/TP B39M/SK OVC 040/WX 10 SM
    Report
    a routine report filed through IAD
    Where
    runway 1R
    Time
    10:42 UTC
    Height
    during the descent
    Aircraft
    B39M
    Sky
    overcast from 4,000 ft
    Weather
    10, miles
  • SF50 at 3,000 ft, 26 nm northeast, 8:15 am EDT (12:15 UTC): a broken layer above 2,000 ft. At the departure end, 26 nm northeast of the line.
    as filed, and in English
    FDK UA /OV FDK/TM 1215/FL030/TP SF50/SK BKN020
    Report
    a routine report filed through FDK
    Where
    over FDK
    Time
    12:15 UTC
    Height
    at 3,000 ft
    Aircraft
    SF50
    Sky
    a broken layer from 2,000 ft
  • UAL1428 at 32,000 ft, 14 nm northeast, 7:36 am EDT (11:36 UTC): no turbulence, -39 °C, wind 360° at 59 knots. At the departure end, 14 nm northeast of the line.
    as filed, and in English
    ARP UAL1428 3923N 07750W 1136 F320 MS39 360/059KT TB NONE SK CLEAR IC NONE
    Report
    a routine report filed through ARP
  • EPIC at 1,800 ft, 26 nm northeast, 8:01 am EDT (12:01 UTC): overcast above 1,800 ft, remarks: during the climb runway 24 lbe. 120 nm along the route, 26 nm northeast of the line.
    as filed, and in English
    LBE UA /OV KLBE/TM 1201/FL018/TP EPIC/SK OVC018-TOPUNKN/RM DURC RWY 24 LBE
    Report
    a routine report filed through LBE
    Where
    over KLBE
    Time
    12:01 UTC
    Height
    at 1,800 ft
    Aircraft
    EPIC
    Sky
    overcast from 1,800 ft, tops unknown
    Remarks
    during the climb runway 24 lbe
  • CL30 at 2,600 ft, 26 nm northeast, 6:41 am EDT (10:41 UTC): overcast above 2,600 ft, remarks: during the climb runway 24 KLBE. 120 nm along the route, 26 nm northeast of the line.
    as filed, and in English
    LBE UA /OV KLBE/TM 1041/FL026/TP CL30/SK OVC026-TOPUNKN/RM DURC RWY 24 KLBE
    Report
    a routine report filed through LBE
    Where
    over KLBE
    Time
    10:41 UTC
    Height
    at 2,600 ft
    Aircraft
    CL30
    Sky
    overcast from 2,600 ft, tops unknown
    Remarks
    during the climb runway 24 KLBE
  • NMRS at 31,000 ft, 30 nm northeast, 6:42 am EDT (10:42 UTC): light to moderate turbulence from 29,000 ft to 33,000 ft, remarks: zob. 130 nm along the route, 30 nm northeast of the line.
    as filed, and in English
    PIT UA /OV PIT-JST/TM 1042/FL310/TP NMRS/TB CONS LGT OCNL MOD 290-330/RM ZOB
    Report
    a routine report filed through PIT
    Where
    between PIT and JST
    Time
    10:42 UTC
    Height
    at 31,000 ft
    Aircraft
    NMRS
    Turbulence
    continuous light occasional moderate from 29,000 ft to 33,000 ft
    Remarks
    zob
  • FA20 at 1,700 ft, 19 nm northeast, 8:28 am EDT (12:28 UTC): remarks: bases 1700 ils runway 28. 140 nm along the route, 19 nm northeast of the line.
    as filed, and in English
    AGC UA /OV KAGC/TM 1228/FL017/TP FA20/RM BASES 1700 ILS RWY 28
    Report
    a routine report filed through AGC
    Where
    over KAGC
    Time
    12:28 UTC
    Height
    at 1,700 ft
    Aircraft
    FA20
    Remarks
    bases 1700 ils runway 28
  • PC12 at 1,800 ft, 13 nm north, 7:42 am EDT (11:42 UTC): overcast above 500 ft, remarks: tops 040MSL. 140 nm along the route, 13 nm north of the line.
    as filed, and in English
    AGC UA /OV AGC FINAL/TM 1142/FL018/TP PC12/SK OVC005/RM TOPS 040MSL
    Report
    a routine report filed through AGC
    Where
    agc final
    Time
    11:42 UTC
    Height
    at 1,800 ft
    Aircraft
    PC12
    Sky
    overcast from 500 ft
    Remarks
    tops 040MSL
  • P68 at 1,500 ft, 19 nm northeast, 7:18 am EDT (11:18 UTC): remarks: bases 1500 ils runway 28. 140 nm along the route, 19 nm northeast of the line.
    as filed, and in English
    AGC UA /OV KAGC/TM 1118/FL015/TP P68/RM BASES 1500 ILS RWY 28
    Report
    a routine report filed through AGC
    Where
    over KAGC
    Time
    11:18 UTC
    Height
    at 1,500 ft
    Aircraft
    P68
    Remarks
    bases 1500 ils runway 28
  • E75S climbing, 23 nm northeast, 7:35 am EDT (11:35 UTC): remarks: bottoms at 2,500 ft tops 4,000 ft. 160 nm along the route, 23 nm northeast of the line.
    as filed, and in English
    PIT UA /OV PIT360005/TM 1135/FLDURC/TP E75S/RM BOTTOMS 025 TOPS 040
    Report
    a routine report filed through PIT
    Where
    5 nm north (360°) of PIT
    Time
    11:35 UTC
    Height
    during the climb
    Aircraft
    E75S
    Remarks
    bottoms at 2,500 ft tops 4,000 ft
  • A320 climbing, 17 nm northeast, 7:15 am EDT (11:15 UTC): no icing, remarks: tops 4,200 ft. 160 nm along the route, 17 nm northeast of the line.
    as filed, and in English
    PIT UA /OV PIT280005/TM 1115/FLDURC/TP A320/IC NEG/RM TOPS 042
    Report
    a routine report filed through PIT
    Where
    5 nm west (280°) of PIT
    Time
    11:15 UTC
    Height
    during the climb
    Aircraft
    A320
    Icing
    none
    Remarks
    tops 4,200 ft

16 more routine reports are on the map.

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 18 forecast points nearest it (EKN, AGC, CLE, FWA, MKG, GRB, LSE, MSP, AXN, ABR, DIK, MLS, BIL, GTF, GPI, GEG, YKM, SEA). A plus sign is a headwind, a minus sign a tailwind.

HeightAverage windHead- or tailwindTemperatureGround speedTime en routeArrival
4,500 ft280° at 7 kt+7 kt1 °C113 kt17 h 51 min11:36 pm PDT (06:36 UTC)
6,500 ft280° at 8 kt+8 kt9 °C112 kt18 h 01 min11:46 pm PDT (06:46 UTC)
8,500 ft260° at 9 kt+9 kt6 °C111 kt18 h 10 min11:55 pm PDT (06:55 UTC)
10,500 ft260° at 12 kt+11 kt2 °C109 kt18 h 30 min12:15 am PDT (07:15 UTC)
12,500 ft270° at 14 kt+13 kt-1 °C107 kt18 h 51 min12:36 am PDT (07:36 UTC)
14,500 ft270° at 15 kt+15 kt-5 °C105 kt19 h 13 min12:58 am PDT (07:58 UTC)
16,500 ft270° at 16 kt+16 kt-9 °C104 kt19 h 24 min1:09 am PDT (08:09 UTC)
18,000 ft FL180270° at 17 kt+17 kt-12 °C103 kt19 h 35 min1:20 am PDT (08:20 UTC)
24,000 ft FL240270° at 21 kt+21 kt-24 °C99 kt20 h 22 min2:07 am PDT (09:07 UTC)
30,000 ft FL300270° at 24 kt+24 kt-36 °C96 kt21 h 01 min2:46 am PDT (09:46 UTC)
34,000 ft FL340270° at 34 kt+35 kt-41 °C85 kt23 h 44 min5:29 am PDT (12:29 UTC)
39,000 ft FL390270° at 44 kt+44 kt-47 °C76 kt26 h 32 min8:17 am PDT (15:17 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
PointFrom3,0006,0009,00012,00018,00024,00030,00034,00039,000
EKNused from 0 nm out; 91 nm from the line330/20 10°350/29 7°340/32 2°340/44 -8°350/50 -21°350/63 -35°340/69 -40°330/42 -50°
AGCused from 100 nm out; 25 nm from the line340/11350/12 11°360/25 7°340/30 2°340/41 -8°340/44 -21°350/59 -36°340/68 -42°340/50 -51°
CLEused from 200 nm out; 41 nm from the line310/7350/20 14°340/16 9°320/21 2°320/32 -8°330/34 -20°330/45 -36°320/60 -45°320/64 -51°
FWAused from 300 nm out; 72 nm from the line270/20300/16 15°290/14 10°280/17 3°290/25 -7°280/30 -19°280/34 -35°290/48 -44°300/64 -52°
MKGused from 399 nm out; 64 nm from the line260/28260/18 15°250/16 9°260/22 4°280/31 -9°270/35 -21°270/44 -35°270/42 -45°290/61 -51°
GRBused from 549 nm out; 86 nm from the line250/32250/22 17°240/18 8°280/21 6°280/34 -11°280/35 -21°280/39 -37°270/52 -45°290/60 -49°
LSEused from 599 nm out; 63 nm from the line250/25240/21 17°240/28 11°250/28 5°280/24 -10°280/31 -21°260/35 -37°270/45 -43°280/59 -47°
MSPused from 749 nm out; 33 nm from the line250/12250/17 17°240/26 12°250/26 5°280/26 -9°280/32 -22°270/37 -38°280/47 -41°280/55 -48°
AXNused from 849 nm out; 60 nm from the line110/6260/10 16°240/17 12°250/20 5°260/29 -10°260/35 -22°260/29 -38°270/48 -41°270/61 -48°
ABRused from 949 nm out; 34 nm from the line080/12210/12 17°220/22 12°230/26 5°220/28 -10°230/41 -21°250/36 -36°260/47 -39°260/63 -47°
DIKused from 1098 nm out; 86 nm from the line190/12 5°230/29 7°220/33 1°220/43 -11°210/47 -23°220/53 -33°240/56 -40°250/72 -47°
MLSused from 1248 nm out; 53 nm from the line290/17 -1°250/18 0°230/25 0°220/31 -11°220/32 -24°220/50 -32°220/60 -38°230/71 -46°
BILused from 1398 nm out; 70 nm from the line300/14270/19 -2°260/26 -2°220/28 -13°210/51 -25°220/56 -33°220/61 -39°220/72 -45°
GTFused from 1498 nm out; 36 nm from the lineL/VL/V -7°240/8 -8°240/30 -14°240/40 -28°210/52 -38°210/76 -38°220/72 -43°
GPIused from 1647 nm out; 55 nm from the line090/8 -4°140/7 -7°090/10 -8°110/10 -19°210/25 -30°200/24 -40°210/31 -39°210/35 -42°
GEGused from 1747 nm out; 33 nm from the line060/7 -2°070/12 -6°050/8 -8°120/11 -21°110/18 -33°030/22 -37°040/6 -38°240/7 -41°
YKMused from 1897 nm out; 58 nm from the line360/6360/11 -1°030/20 -7°040/21 -11°020/55 -18°010/84 -26°010/79 -40°010/45 -42°350/23 -42°
SEAused from 1947 nm out; 27 nm from the line350/5010/6 0°010/9 -4°010/27 -6°010/51 -15°360/58 -26°360/60 -41°350/55 -48°340/30 -45°

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

AirportWhereConditionsWindVisibilityCeilingElevationReported
IAD Washington, DC departure VFR Sky: a broken layer at 3,300 feet from the northwest (320°) at 11 knots, gusting to 18 10+ mi 3,300 ft 312 ft 7:52 am EDT (11:52 UTC)
HLG Wheeling, WV 170 nm out, 8 nm south of the line, tower low IFR Sky: overcast at 300 feet Weather: mist from the west (260°) at 4 knots 1 mi 300 ft 1,194 ft 11:53 UTC
TOL Toledo, OH 329 nm out, 5 nm north of the line, tower low IFR Sky: overcast at 300 feet Weather: mist from the south-southwest (210°) at 6 knots 1 mi 300 ft 683 ft 11:52 UTC
MKE Milwaukee, WI 529 nm out, 5 nm north of the line, tower VFR Sky: a few clouds at 18,000 feet, a broken layer at 23,000 feet from the southwest (220°) at 8 knots 10+ mi 23,000 ft 728 ft 11:52 UTC
LSE La Crosse, WI 689 nm out, 3 nm northeast of the line, tower VFR from the south-southwest (200°) at 10 knots 10+ mi none 655 ft 11:53 UTC
OVL Olivia, MN 859 nm out, 1 nm southeast of the line VFR from the west-northwest (300°) at 3 knots 7 mi none 1,079 ft 12:22 UTC
HEI Hettinger, ND 1188 nm out, 13 nm south of the line IFR Sky: overcast at 500 feet Weather: mist from the northeast (050°) at 8 knots 3 mi 500 ft 2,705 ft 12:31 UTC
BHK Baker, MT 1258 nm out, 8 nm south of the line marginal VFR Sky: a few clouds at 400 feet, overcast at 1,400 feet Weather: mist calm 3 mi 1,400 ft 2,980 ft 12:35 UTC
GTF Great Falls, MT 1558 nm out, 16 nm north of the line, tower low IFR Sky: sky obscured at 500 feet Weather: mist from the north-northwest (340°) at 4 knots 0.5 mi 500 ft 3,680 ft 12:39 UTC
GEG Spokane, WA 1807 nm out, 7 nm north of the line, tower VFR Sky: scattered clouds at 4,800 feet, a broken layer at 7,000 feet, overcast at 10,000 feet from the northeast (050°) at 5 knots 10+ mi 7,000 ft 2,385 ft 11:53 UTC
RNT Renton, WA 1997 nm out, 2 nm east of the line, tower VFR calm 10+ mi none 32 ft 11:53 UTC
PWT Bremerton, WA destination VFR calm 10+ mi none 444 ft 4:56 am PDT (11:56 UTC)

The highest airport on this list sits at 3,680 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.

At PWT when you get there the forecast at the estimated arrival, 11:36 pm PDT (06:36 UTC)

Wind from the south-southwest at 3 knots, visibility more than 6 miles, scattered clouds at 25,000 feet VFR

The whole forecast for PWT
  • From Mon 5:00 am PDT (12:00 UTC): wind calm, visibility more than 6 miles, patches of fog, clear skies
  • From Mon 10:00 am PDT (17:00 UTC): wind from the south at 4 knots, visibility more than 6 miles, clear skies
  • From Mon 3:00 pm PDT (22:00 UTC): wind from the south-southwest at 5 knots, visibility more than 6 miles, clear skies
  • From Mon 7:00 pm PDT (02:00 UTC): wind from the south-southwest at 3 knots, visibility more than 6 miles, scattered clouds at 25,000 feet
  • From Tue 2:00 am PDT (09:00 UTC): wind from the south-southwest at 3 knots, visibility more than 6 miles, overcast at 10,000 feet
The forecast for IAD, the departure
  • From Mon 8:00 am EDT (12:00 UTC): wind from the north-northwest at 10 knots, gusting to 17, visibility 6 miles, mist, scattered clouds at 1,800 feet, a broken layer at 4,500 feet
  • From Mon 9:00 am EDT (13:00 UTC): wind from the north-northwest at 10 knots, gusting to 18, visibility more than 6 miles, a broken layer at 2,000 feet, a broken layer at 3,500 feet
  • From Mon 12:00 pm EDT (16:00 UTC): wind from the north-northwest at 13 knots, gusting to 21, visibility more than 6 miles, scattered clouds at 2,500 feet, a broken layer at 4,000 feet
  • From Mon 2:00 pm EDT (18:00 UTC): wind from the north-northwest at 11 knots, gusting to 18, visibility more than 6 miles, a broken layer at 4,500 feet
  • From Mon 5:00 pm EDT (21:00 UTC): wind from the northwest at 7 knots, visibility more than 6 miles, scattered clouds at 5,000 feet
  • From Mon 8:00 pm EDT (00:00 UTC): wind from the west-northwest at 3 knots, visibility more than 6 miles, a few clouds at 5,000 feet
  • From Tue 10:00 am EDT (14:00 UTC): wind from the south at 5 knots, visibility more than 6 miles, scattered clouds at 25,000 feet

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

  • 4/9383 WASHINGTON, DC., USA 8 nm from the route, at the departure end · security · ZDC
  • 6/8600 Sterling, VA, Monday, October 12, 2026 through Monday, October 12, 2026 Local 4 nm from the route, at the departure end · a VIP movement · today · ZDC
  • 6/8829 Youngstown, OH, Monday, October 12, 2026 through Monday, October 12, 2026 Local 14 nm from the route, 190 nm along the route · a VIP movement · today · ZOB
  • 6/8587 Youngstown, OH, Monday, October 12, 2026 through Monday, October 12, 2026 Local 14 nm from the route, 190 nm along the route · a VIP movement · today · ZOB
  • 6/8927 Kalispell, MT, Wednesday, October 14, 2026 through Wednesday, October 14, 2026 Local on the route, 1657 nm along the route · a VIP movement · starts Wednesday 14 October · ZSE
  • 6/8923 Kalispell, MT, Wednesday, October 14, 2026 through Wednesday, October 14, 2026 Local 22 nm from the route, 1677 nm along the route · a VIP movement · starts Wednesday 14 October · ZLC

Daylight

Sunset at IAD 6:36 pm EDT (22:36 UTC), at PWT 6:27 pm PDT (01:27 UTC) (civil twilight ends 6:58 pm PDT (01:58 UTC)). At 120 knots the arrival at PWT is before sunrise there (7:26 am PDT (14:26 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 Northeast
Radar now, the Northeast · loop National Weather Service
Radar now, the central Great Lakes
Radar now, the central Great Lakes · loop National Weather Service
Radar now, the upper Mississippi valley
Radar now, the upper Mississippi valley · loop National Weather Service
Radar, the whole country
Radar, the whole country · loop National Weather Service
Surface analysis now
Surface analysis now Weather Prediction Center
Forecast chart, 12 hours ahead
Forecast chart, 12 hours ahead Weather Prediction Center
Forecast chart, 24 hours ahead
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: Washington Dulles International, Bremerton Ntl Airport.