Ronald Reagan Washington Ntl Airport to Seattle-Tacoma International DCA → SEA

Warnings the route crosses SIGMETs and AIRMETs whose area the line passes through or comes within 25 nm of

• SIGMET C17C: thunderstorms (a convective SIGMET) up to 39,000 ft, moving from the west at 35 knots, until 4:55 am EDT (08:55 UTC). Near the route, 350 nm along the route.
  as issued

  WSUS32 KKCI 130655
  MKCC WST 130655
  CONVECTIVE SIGMET 17C
  VALID UNTIL 0855Z
  MI WI LH LS LM
  FROM 40ESE YQT-60NE ASP-30SSE ECK-20SSW DXO-40N RHI-40ESE YQT
  AREA EMBD TS MOV FROM 25035KT. TOPS TO FL390.

• AIRMET SIERRA 6E: low cloud or poor visibility (IFR conditions) (due to ceilings below 1,000 ft, visibility below 3 miles, mist, fog). Over the first 150 nm of the route.
• AIRMET SIERRA 4E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist, fog). Over the route from 60 to 160 nm out.
• AIRMET TANGO 1W: 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 390 to 450 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 909 to 1279 nm out.
• AIRMET SIERRA 7E: low cloud or poor visibility (IFR conditions) (due to ceilings below 1,000 ft, visibility below 3 miles, mist). Near the route, 1589 nm along the route.
• AIRMET TANGO 1W: moderate turbulence above 18,000 ft from 18,000 ft to 39,000 ft. Over the route from 1639 to 1669 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 DCA.

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

• A320 at 9,000 ft, 42 nm northeast, 2:31 am EDT (06:31 UTC): no turbulence. 340 nm along the route, 42 nm northeast of the line.
  as filed, and in English

  DTW UA /OV 10 SE DTW/TM 0631/FL90/TP A320/TB SMOOTH

  Report

  a routine report filed through DTW

  Where

  10 southeast dtw

  Time

  06:31 UTC

  Height

  at 9,000 ft

  Aircraft

  A320

  Turbulence

  smooth

At SEA when you get there the forecast at the estimated arrival, 8:30 pm PDT (03:30 UTC)

Wind from the southwest at 5 knots, visibility more than 6 miles, overcast at 7,000 feet VFR

SEA:

TAF KSEA 130520Z 1306/1412 VRB03KT P6SM SCT250 FM130800 16004KT P6SM OVC100 FM131800 20005KT P6SM OVC070 FM132300 23005KT P6SM OVC070 FM140400 19004KT P6SM SCT025 OVC040 FM140900 18004KT P6SM OVC025

DCA:

TAF KDCA 130520Z 1306/1412 21005KT P6SM SKC FM131400 19009KT P6SM SCT250 FM140300 22005KT P6SM SCT250

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

• 4/9383 WASHINGTON, DC., USA on the route, at the departure end · security · ZDC
• 6/8992 Monroe, MI, Thursday, October 15, 2026 Local 24 nm from the route, 340 nm along the route · a VIP movement · starts Thursday 15 October · ZOB
• 6/8927 Kalispell, MT, Wednesday, October 14, 2026 through Wednesday, October 14, 2026 Local on the route, 1679 nm along the route · a VIP movement · starts tomorrow · ZSE
• 6/9020 Missoula, MT, Wednesday, October 14, 2026 Local 25 nm from the route, 1679 nm along the route · security · starts tomorrow · ZLC
• 6/8923 Kalispell, MT, Wednesday, October 14, 2026 through Wednesday, October 14, 2026 Local 24 nm from the route, 1699 nm along the route · a VIP movement · starts tomorrow · ZLC

Notices to air missions closures and things out of service at both ends; airspace, navigation aids and obstructions near the line

DCA: 48 notices in force, 2 starting within a week. runway 15/33 closed all of them, grouped →

• closed Runway 15/33 closed until Tue 13 Oct, 4:00 am EDT (08:00 UTC) · DCA 10/308
  as issued

  !DCA 10/308 DCA RWY 15/33 CLSD 2610130700-2610130800

• closed Runway 04/22 closed except crossing and TAX until Tue 13 Oct, 5:00 am EDT (09:00 UTC) · DCA 10/306
  as issued

  !DCA 10/306 DCA RWY 04/22 CLSD EXC XNG AND TAX 2610130430-2610130900

• closed Taxiway K between taxiway K1 and taxiway K2 closed until Tue 13 Oct, 6:00 am EDT (10:00 UTC) · DCA 10/304
  as issued

  !DCA 10/304 DCA TWY K BTN TWY K1 AND TWY K2 CLSD 2610130300-2610131000

• closed Runway 01/19 closed except crossing and TAX daily 12:00 am EDT to 5:00 am EDT until Fri 16 Oct, 5:00 am EDT (09:00 UTC) · Daily:0400-0900~DLY 12:00 am EDT to 5:00 am EDT · DCA 10/127
  as issued

  !DCA 10/127 DCA RWY 01/19 CLSD EXC XNG AND TAX DLY 0400-0900 2610120400-2610160900

SEA: 55 notices in force. all of them, grouped →

• closed Apron north Satellite TXL Blue and Green centerline between C20 and Spot 66 closed until Tue 13 Oct, 8:00 am PDT (15:00 UTC) · SEA 10/183
  as issued

  !SEA 10/183 SEA APRON NORTH SATELLITE TXL BLUE AND GREEN CL BTN C20 AND SPOT 66 CLSD 2610130700-2610131500

• closed Taxiway R closed to aircraft wingspan more than 214 ft until Thu 5 Nov, 11:59 pm PST (07:59 UTC) · SEA 10/138
  as issued

  !SEA 10/138 SEA TWY R CLSD TO ACFT WINGSPAN MORE THAN 214FT 2610080603-2611060759

• closed Taxiway Q between runway 16L/34R and taxiway T closed until Thu 5 Nov, 11:59 pm PST (07:59 UTC) · SEA 10/137
  as issued

  !SEA 10/137 SEA TWY Q BTN RWY 16L/34R AND TWY T CLSD 2610080603-2611060759

• closed Taxiway Q between runway 16R/34L and taxiway T closed to aircraft wingspan more than 214 ft until Thu 5 Nov, 11:59 pm PST (07:59 UTC) · SEA 10/136
  as issued

  !SEA 10/136 SEA TWY Q BTN RWY 16R/34L AND TWY T CLSD TO ACFT WINGSPAN MORE THAN 214FT 2610080602-2611060759

Airports along the way: MKE runway 01L/19R closed runway 13/31 closed

304 notices near the line, the first 30 (airspace and special activity within 25 nm, navigation aids within 25 nm, obstructions within 5 nm):

• Obstruction crane lights (ASN 2026-AEA-8465-OE) 38°59′N 76°56′W (1.3 nautical miles WNW CGS) 296 ft (160 ft above ground level) out of service until Mon 19 Oct, 7:59 pm EDT (23:59 UTC) · 0 nm along the route, 9 nm off the line · CGS 10/005
  as issued

  !CGS 10/005 CGS OBST CRANE LGT (ASN 2026-AEA-8465-OE) 385931N0765647W (1.3NM WNW CGS) 296FT (160FT AGL) U/S 2610101100-2610192359

• Navigation aid ILS runway 19R localizer out of service until Wed 14 Oct, 7:59 pm EDT (23:59 UTC) · 0 nm along the route, 8 nm off the line · ADW 10/009
  as issued

  !ADW 10/009 ADW NAV ILS RWY 19R LOC U/S 2610071111-2610142359

• Obstruction tower lights (ASR 1053537) 38°59′N 77°01′W (4.8 nautical miles west CGS) 630.6FT (295.6FT above ground level) out of service until Wed 6 Jan, 6:59 pm EST (23:59 UTC) · 0 nm along the route, 8 nm off the line · CGS 10/003
  as issued

  !CGS 10/003 CGS OBST TOWER LGT (ASR 1053537) 385928.00N0770134.00W (4.8NM W CGS) 630.6FT (295.6FT AGL) U/S 2610061345-2701062359

• Navigation aid ILS runway 10 out of service until Sat 17 Oct, 11:00 pm EDT (03:00 UTC) · 0 nm along the route, 26 nm off the line · BWI 10/017
  as issued

  !BWI 10/017 BWI NAV ILS RWY 10 U/S 2610012342-2610180300

• Navigation aid ILS runway 28 out of service until Sat 17 Oct, 11:00 pm EDT (03:00 UTC) · 0 nm along the route, 26 nm off the line · BWI 10/016
  as issued

  !BWI 10/016 BWI NAV ILS RWY 28 U/S 2610012340-2610180300

• Obstruction tower lights (ASR 1036610) 38°56′N 77°04′W (5.5 nautical miles northwest 09W) 1048.9FT (662.1FT above ground level) out of service until Wed 21 Oct, 7:59 pm EDT (23:59 UTC) · 0 nm along the route, 6 nm off the line · 09W 07/644
  as issued

  !DCA 07/644 09W OBST TOWER LGT (ASR 1036610) 385624.00N0770453.00W (5.5NM NW 09W) 1048.9FT (662.1FT AGL) U/S 2607212323-2610212359

• Obstruction tower lights (ASN 2026-AEA-2713-OE) 38°47′N 76°52′W (4.8 nautical miles northeast VKX) 271 ft (25 ft above ground level) out of service until Fri 23 Oct, 5:00 pm EDT (21:00 UTC) · 0 nm along the route, 8 nm off the line · VKX 06/380
  as issued

  !DCA 06/380 VKX OBST TOWER LGT (ASN 2026-AEA-2713-OE) 384742N0765225W (4.8NM NE VKX) 271FT (25FT AGL) U/S 2606121857-2610232100

• Obstruction crane lights (ASN 2025-AEA-1254-OE) 38°59′N 76°55′W (0.8 nautical miles northwest CGS) 327 ft (264 ft above ground level) out of service until Thu 31 Dec, 6:59 pm EST (23:59 UTC) · 0 nm along the route, 10 nm off the line · CGS 12/004
  as issued

  !CGS 12/004 CGS OBST CRANE LGT (ASN 2025-AEA-1254-OE) 385928N0765558W (0.8NM NW CGS) 327FT (264FT AGL) U/S 2512311510-2612312359

• Obstruction tower lights (ASR 1042694) 39°00′N 77°03′W (6.3 nautical miles west CGS) 1050.5FT (754.3FT above ground level) out of service until Thu 12 Nov, 6:00 pm EST (23:00 UTC) · 10 nm along the route, 9 nm off the line · CGS 10/006
  as issued

  !CGS 10/006 CGS OBST TOWER LGT (ASR 1042694) 390000.00N0770325.00W (6.3NM W CGS) 1050.5FT (754.3FT AGL) U/S 2610121731-2611122300

• Obstruction tower lights (ASR 1059002) 39°07′N 77°18′W (6.8 nautical miles WSW GAI) 812.7FT (403.5FT above ground level) out of service until Sun 8 Nov, 3:13 pm EST (20:13 UTC) · 20 nm along the route, 9 nm off the line · GAI 09/682
  as issued

  !DCA 09/682 GAI OBST TOWER LGT (ASR 1059002) 390757.00N0771816.00W (6.8NM WSW GAI) 812.7FT (403.5FT AGL) U/S 2609242013-2611082013

• Obstruction tower lights (ASR 1274506) 38°54′N 77°25′W (3.2 nautical miles SSE IAD) 462.3FT (115.2FT above ground level) out of service until Mon 7 Dec, 7:43 am EST (12:43 UTC) · 20 nm along the route, 7 nm off the line · IAD 09/059
  as issued

  !IAD 09/059 IAD OBST TOWER LGT (ASR 1274506) 385404.30N0772534.70W (3.2NM SSE IAD) 462.3FT (115.2FT AGL) U/S 2609081143-2612071243

• Navigation aid ILS runway 19R inner marker out of service until Thu 29 Oct, 11:00 pm EDT (03:00 UTC) · 20 nm along the route, 5 nm off the line · IAD 07/340
  as issued

  !IAD 07/340 IAD NAV ILS RWY 19R IM U/S 2607310041-2610300300

• Navigation aid ILS runway 01L inner marker out of service until Tue 7 Mar 2028, 4:11 pm EST (21:11 UTC), estimated · 20 nm along the route, 5 nm off the line · IAD 07/196
  as issued

  !IAD 07/196 IAD NAV ILS RWY 01L IM U/S 2607161509-2803072111EST

• Navigation aid ILS runway 19C inner marker out of service until Sun 30 Jan 2028, 4:11 pm EST (21:11 UTC), estimated · 20 nm along the route, 5 nm off the line · IAD 06/362
  as issued

  !IAD 06/362 IAD NAV ILS RWY 19C IM U/S 2606301139-2801302111EST

• Obstruction tower lights (ASR 1310001) 39°17′N 77°42′W (14.3 nautical miles ESE MRB) 1,544 ft (260 ft above ground level) out of service until Thu 19 Nov, 6:52 pm EST (23:52 UTC) · 40 nm along the route, 8 nm off the line · MRB 07/015
  as issued

  !MRB 07/015 MRB OBST TOWER LGT (ASR 1310001) 391743.47N0774213.65W (14.3NM ESE MRB) 1544FT (260FT AGL) U/S 2607222352-2611192352

• Obstruction tower lights (ASR 1244254) 39°26′N 77°59′W (2.0 nautical miles north MRB) 764.8FT (198.8FT above ground level) out of service until Tue 1 Dec, 7:26 pm EST (00:26 UTC) · 60 nm along the route, 10 nm off the line · MRB 10/002
  as issued

  !MRB 10/002 MRB OBST TOWER LGT (ASR 1244254) 392605.80N0775902.40W (2.0NM N MRB) 764.8FT (198.8FT AGL) U/S 2610021926-2612020026

• Obstruction tower lights (ASN 2024-AEA-5277-OE) 39°14′N 78°11′W (6.5 nautical miles NNW OKV) 1,333 ft (161 ft above ground level) out of service until Fri 4 Dec, 6:59 pm EST (23:59 UTC) · 60 nm along the route, 6 nm off the line · OKV 09/004
  as issued

  !OKV 09/004 OKV OBST TOWER LGT (ASN 2024-AEA-5277-OE) 391439N0781148W (6.5NM NNW OKV) 1333FT (161FT AGL) U/S 2609051159-2612042359

• Obstruction tower lights (ASR 1249918) 39°26′N 78°18′W (15.0 nautical miles west MRB) 1172.9FT (250.0FT above ground level) out of service until Thu 19 Nov, 6:35 pm EST (23:35 UTC) · 70 nm along the route, 2 nm off the line · MRB 10/003
  as issued

  !MRB 10/003 MRB OBST TOWER LGT (ASR 1249918) 392634.80N0781822.00W (15.0NM W MRB) 1172.9FT (250.0FT AGL) U/S 2610052335-2611192335

• Obstruction tower lights (ASR 1260763) 39°41′N 78°40′W (5.7 nautical miles northeast CBE) 1430.1FT (310.0FT above ground level) out of service until Tue 8 Dec, 7:35 am EST (12:35 UTC) · 90 nm along the route, 7 nm off the line · CBE 09/102
  as issued

  !EKN 09/102 CBE OBST TOWER LGT (ASR 1260763) 394113.40N0784053.20W (5.7NM NE CBE) 1430.1FT (310.0FT AGL) U/S 2609091135-2612081235

• Obstruction tower lights (ASR 1229836) 39°42′N 78°43′W (5.9 nautical miles NNE CBE) 1745.1FT (249.0FT above ground level) out of service until Wed 21 Oct, 7:59 pm EDT (23:59 UTC) · 90 nm along the route, 7 nm off the line · CBE 08/228
  as issued

  !EKN 08/228 CBE OBST TOWER LGT (ASR 1229836) 394229.90N0784325.80W (5.9NM NNE CBE) 1745.1FT (249.0FT AGL) U/S 2608211108-2610212359

• Obstruction tower lights (ASR 1011507) 39°42′N 78°37′W (8.4 nautical miles northeast CBE) 2170.6FT (298.9FT above ground level) out of service until Fri 20 Nov, 7:53 am EST (12:53 UTC) · 90 nm along the route, 9 nm off the line · CBE 07/207
  as issued

  !EKN 07/207 CBE OBST TOWER LGT (ASR 1011507) 394226.50N0783732.00W (8.4NM NE CBE) 2170.6FT (298.9FT AGL) U/S 2607231253-2611201253

• Obstruction tower lights (ASN 2025-AEA-2756-OE) 39°53′N 79°05′W (9.2 nautical miles SSW 2G9) 2,716 ft (259 ft above ground level) out of service until Thu 19 Nov, 7:02 am EST (12:02 UTC) · 110 nm along the route, 9 nm off the line · 2G9 10/039
  as issued

  !AOO 10/039 2G9 OBST TOWER LGT (ASN 2025-AEA-2756-OE) 395354N0790518W (9.2NM SSW 2G9) 2716FT (259FT AGL) U/S 2610051104-2611191202

• Obstruction tower lights (ASR 1025879) 40°02′N 79°29′W (4.8 nautical miles SSE P45) 2724.1FT (395.0FT above ground level) out of service until Sun 22 Nov, 8:18 pm EST (01:18 UTC) · 130 nm along the route, 8 nm off the line · P45 08/294
  as issued

  !AOO 08/294 P45 OBST TOWER LGT (ASR 1025879) 400211.80N0792943.30W (4.8NM SSE P45) 2724.1FT (395.0FT AGL) U/S 2608250018-2611230118

• Obstruction tower lights (ASR 1018127) 39°46′N 79°27′W (12.7 nautical miles NNW 2G4) 2668.0FT (215.9FT above ground level) out of service until Tue 10 Nov, 11:00 pm EST (04:00 UTC) · 130 nm along the route, 8 nm off the line · 2G4 08/127
  as issued

  !EKN 08/127 2G4 OBST TOWER LGT (ASR 1018127) 394611.00N0792733.60W (12.7NM NNW 2G4) 2668.0FT (215.9FT AGL) U/S 2608121500-2611110400

• Navigation aid DME out of service until Fri 6 Dec 2030, 3:00 pm EST (20:00 UTC), estimated · 130 nm along the route, 7 nm off the line · IHD 08/049
  as issued

  !AOO 08/049 IHD NAV DME U/S 2608042220-3012062000EST

• Obstruction tower lights (ASR 1039637) 40°00′N 79°31′W (5.9 nautical miles south P45) 2604.0FT (298.9FT above ground level) out of service until Wed 28 Oct, 12:00 am EDT (04:00 UTC) · 130 nm along the route, 7 nm off the line · P45 07/287
  as issued

  !AOO 07/287 P45 OBST TOWER LGT (ASR 1039637) 400036.30N0793138.70W (5.9NM S P45) 2604.0FT (298.9FT AGL) U/S 2607291103-2610280400

• Obstruction tower lights (ASR 1018212) 39°47′N 79°32′W (11.4 nautical miles SSE VVS) 2248.7FT (215.9FT above ground level) out of service until Mon 19 Oct, 12:00 am EDT (04:00 UTC) · 130 nm along the route, 7 nm off the line · VVS 07/207
  as issued

  !AOO 07/207 VVS OBST TOWER LGT (ASR 1018212) 394730.50N0793216.50W (11.4NM SSE VVS) 2248.7FT (215.9FT AGL) U/S 2607201226-2610190400

• Obstruction tower lights (ASR 1222316) 39°53′N 79°46′W (7.0 nautical miles southwest VVS) 1575.8FT (247.0FT above ground level) out of service until Thu 31 Dec, 12:00 am EST (05:00 UTC) · 140 nm along the route, 7 nm off the line · VVS 09/149
  as issued

  !AOO 09/149 VVS OBST TOWER LGT (ASR 1222316) 395309.30N0794628.10W (7.0NM SW VVS) 1575.8FT (247.0FT AGL) U/S 2609081519-2612310500

• Obstruction tower lights (ASR 1040356) 39°51′N 79°39′W (6.3 nautical miles south VVS) 2873.0FT (288.1FT above ground level) out of service until Mon 30 Nov, 4:13 pm EST (21:13 UTC) · 140 nm along the route, 8 nm off the line · VVS 09/018
  as issued

  !AOO 09/018 VVS OBST TOWER LGT (ASR 1040356) 395118.00N0793923.90W (6.3NM S VVS) 2873.0FT (288.1FT AGL) U/S 2609012013-2611302113

• Obstruction tower lights (ASR 1026289) 40°05′N 79°41′W (6.5 nautical miles west P99) 1933.7FT (361.9FT above ground level) out of service until Sat 21 Nov, 7:11 am EST (12:11 UTC) · 140 nm along the route, 7 nm off the line · P99 07/248
  as issued

  !AOO 07/248 P99 OBST TOWER LGT (ASR 1026289) 400543.00N0794123.30W (6.5NM W P99) 1933.7FT (361.9FT AGL) U/S 2607241211-2611211211

From the FAA's notice service (NOTAMs), the site's copy refreshed every few minutes; last checked 2 minutes ago. The FAA has so far issued eFlight its test feed, which misses some notices (checked against the FAA's own search on 12 October: about a third missing at Santa Barbara and Burbank, none at Atlanta or Las Vegas); the request for the full feed is with the FAA. Times are local to the field. This is for planning; the legal briefing comes from Flight Service or the FAA's own tools.

Daylight

Sunset at DCA 6:32 pm EDT (22:32 UTC), at SEA 6:23 pm PDT (01:23 UTC) (civil twilight ends 6:54 pm PDT (01:54 UTC)). At 120 knots the arrival at SEA is after sunset there (6:25 pm PDT (01:25 UTC)).

Each restriction opens the FAA's own page with the exact area, heights and times.