Plan a flight · Sun 9:53 pm EDT (01:53 UTC)

Charleston Afb/Intl Airport to Seattle-Tacoma International CHS → SEA

2,095 nautical miles (2,410 statute miles) northwest on a straight line, true course 307°, about 314° magnetic at the departure end (variation 7W). At 120 knots that is 17 h 36 min at the quickest height in today's winds (4,500 ft, a 1-knot headwind), arriving about 12:29 pm PDT (19:29 UTC). Right now CHS is VFR, wind from the west-southwest (240°) at 6 knots; SEA is VFR, wind from the north (350°) at 11 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: 694 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

SIGMET 3W: thunderstorms (a convective SIGMET) up to 31,000 ft, moving from the southwest at 40 knots, until 10:55 pm EDT (02:55 UTC). Over the route from 1357 to 1496 nm out.
as issued
```
WSUS33 KKCI 120055
MKCW WST 120055
CONVECTIVE SIGMET 3W
VALID UNTIL 0255Z
MT WY
FROM 10WSW MLS-70E DDY-20N LAR-50E BPI-30NE BIL-10WSW MLS
AREA TS MOV FROM 22040KT. TOPS TO FL310.
```
AIRMET TANGO 5W: moderate turbulence below 18,000 ft (due to mountain wave) up to 8,000 ft. Over the route from 150 to 229 nm out.
AIRMET SIERRA 4E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 170 to 309 nm out.
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 route from 289 to 319 nm out.
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). Over the route from 788 to 977 nm out.
AIRMET TANGO 4W: moderate turbulence above 18,000 ft from 18,000 ft to 36,000 ft. Over the route from 1227 to 1825 nm out.
AIRMET TANGO 4W: moderate turbulence below 18,000 ft up to 18,000 ft. Over the route from 1357 to 1586 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 1396 to 1795 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). Near the route, 1396 nm along the route.
AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 1436 to 1895 nm out.
AIRMET ZULU 3C: moderate icing up to 22,000 ft. Over the route from 1446 to 1566 nm out.
AIRMET ZULU 2C: moderate icing up to 16,000 ft. Over the route from 1656 to 1995 nm out.
AIRMET TANGO 1W: moderate turbulence above 18,000 ft from 18,000 ft to 39,000 ft. Over the last 140 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 CHS.

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

E75L at 14,000 ft, 17 nm northeast, 7:22 pm EDT (23:22 UTC): moderate turbulence from 14,000 ft to 21,000 ft, remarks: during the climb zlc. 1756 nm along the route, 17 nm northeast of the line.
as filed, and in English
```
MSO UA /OV 32S/TM 2322/FL140/TP E75L/TB MOD 140-210/RM DURC /ZLC
```
Report
a routine report filed through MSO
Where
over 32S
Time
23:22 UTC
Height
at 14,000 ft
Aircraft
E75L
Turbulence
moderate from 14,000 ft to 21,000 ft
Remarks
during the climb zlc
C525 at 2,000 ft, 12 nm south, 7:56 pm EDT (23:56 UTC): a broken layer above 3,600 ft. At the departure end, 12 nm south of the line.
as filed, and in English
```
KCHS UA /OV JZI/TM 2356/FL020/TP C525/SK BKN036
```
Report
a routine report filed through KCHS
Where
over JZI
Time
23:56 UTC
Height
at 2,000 ft
Aircraft
C525
Sky
a broken layer from 3,600 ft
B739 at 15,000 ft, 45 nm northeast, 7:20 pm EDT (23:20 UTC): no turbulence, clear from 15,000 ft to 60,000 ft. At the departure end, 45 nm northeast of the line.
as filed, and in English
```
FLO UA /OV FLO200032/TM 2320/FL150/TP B739/SK SKC /TB NEG
```
Report
a routine report filed through FLO
Where
32 nm south (200°) of FLO
Time
23:20 UTC
Height
at 15,000 ft
Aircraft
B739
Sky
clear
Turbulence
none
CRJ9 descending, 34 nm southwest, 7:06 pm EDT (23:06 UTC): no turbulence, remarks: smooth ride on final runway 26. 90 nm along the route, 34 nm southwest of the line.
as filed, and in English
```
AGS UA /OV AGS 080002/TM 2306/FLDURD/TP CRJ9/TB NEG/RM SMOOTH RIDE ON FINAL RWY26
```
Report
a routine report filed through AGS
Where
2 nm east (080°) of AGS
Time
23:06 UTC
Height
during the descent
Aircraft
CRJ9
Turbulence
none
Remarks
smooth ride on final runway 26
PA32 at 7,000 ft, 6 nm southwest, 8:17 pm EDT (00:17 UTC): 8 °C, remarks: smooth. 100 nm along the route, 6 nm southwest of the line.
as filed, and in English
```
AGS UA /OV KAIK360010/TM 0017/FL070/TP PA32/WX FV99SM/TA 8/RM SMOOTH
```
Report
a routine report filed through AGS
Where
10 nm north (360°) of KAIK
Time
00:17 UTC
Height
at 7,000 ft
Aircraft
PA32
Weather
flight visibility 99 miles
Temperature
8 °C
Remarks
smooth
A319 at 25,000 ft, 31 nm northeast, 7:14 pm EDT (23:14 UTC): no turbulence. 389 nm along the route, 31 nm northeast of the line.
as filed, and in English
```
IND UA /OV BWG070017/TM 2314/FL250/TP A319/TB NEG
```
Report
a routine report filed through IND
Where
17 nm east (070°) of BWG
Time
23:14 UTC
Height
at 25,000 ft
Aircraft
A319
Turbulence
none
A319 at 32,000 ft, 29 nm southwest, 6:56 pm EDT (22:56 UTC): light to moderate chop turbulence, remarks: ZME62. 399 nm along the route, 29 nm southwest of the line.
as filed, and in English
```
BNA UA /OV BNA315020/TM 2256/FL320/TP A319/TB CONS LGT OCNL MOD CHOP/RM ZME62
```
Report
a routine report filed through BNA
Where
20 nm northwest (315°) of BNA
Time
22:56 UTC
Height
at 32,000 ft
Aircraft
A319
Turbulence
continuous light occasional moderate chop
Remarks
ZME62
B77W at 31,000 ft, 27 nm southwest, 7:27 pm EDT (23:27 UTC): light to moderate chop turbulence, remarks: zme. 409 nm along the route, 27 nm southwest of the line.
as filed, and in English
```
BNA UA /OV BNA315030/TM 2327/FL310/TP B77W/TB CONS LGT OCNL MOD CHOP/RM ZME
```
Report
a routine report filed through BNA
Where
30 nm northwest (315°) of BNA
Time
23:27 UTC
Height
at 31,000 ft
Aircraft
B77W
Turbulence
continuous light occasional moderate chop
Remarks
zme
B738 at 34,000 ft, 27 nm southwest, 7:41 pm EDT (23:41 UTC): light to moderate chop turbulence, remarks: zme. 429 nm along the route, 27 nm southwest of the line.
as filed, and in English
```
CKV UA /OV CKV/TM 2341/FL340/TP B738/TB CONS LGT OCNL MOD CHOP/RM ZME
```
Report
a routine report filed through CKV
Where
over CKV
Time
23:41 UTC
Height
at 34,000 ft
Aircraft
B738
Turbulence
continuous light occasional moderate chop
Remarks
zme
B737 at 31,000 ft, 32 nm southwest, 8:13 pm EDT (00:13 UTC): light chop turbulence, remarks: ZME25. 499 nm along the route, 32 nm southwest of the line.
as filed, and in English
```
PAH UA /OV CNG360015/TM 0013/FL310/TP B737/TB OCNL LGT CHOP/RM ZME25
```
Report
a routine report filed through PAH
Where
15 nm north (360°) of CNG
Time
00:13 UTC
Height
at 31,000 ft
Aircraft
B737
Turbulence
occasional light chop
Remarks
ZME25
B763 at 32,000 ft, 47 nm northeast, 9:29 pm EDT (01:29 UTC): light to moderate clear-air turbulence, remarks: zdvwc. 1187 nm along the route, 47 nm northeast of the line.
as filed, and in English
```
RAP UA /OV RAP084081/TM 0129/FL320/TP B763/TB OCNL LGT-MOD CAT/RM ZDVWC
```
Report
a routine report filed through RAP
Where
81 nm east (084°) of RAP
Time
01:29 UTC
Height
at 32,000 ft
Aircraft
B763
Turbulence
occasional light to moderate clear-air turbulence
Remarks
zdvwc
A306 at 4,700 ft, 42 nm north, 8:51 pm EDT (00:51 UTC): a routine report with nothing remarked on. 1526 nm along the route, 42 nm north of the line.
as filed, and in English
```
BIL UA /OV BIL280001/TM 0051/FL047/TP A306/SK BASE 047
```
Report
a routine report filed through BIL
Where
1 nm west (280°) of BIL
Time
00:51 UTC
Height
at 4,700 ft
Aircraft
A306
Sky
base 4,700 ft
E75L descending, 8 nm northeast, 9:04 pm EDT (01:04 UTC): remarks: had the airport in sight at 400-500FT above ground. 1626 nm along the route, 8 nm northeast of the line.
as filed, and in English
```
BZN UA /OV BZN/TM 0104/FLDURD/TP E75L/RM HAD THE AIRPORT IN SIGHT AT 400-500FT AGL
```
Report
a routine report filed through BZN
Where
over BZN
Time
01:04 UTC
Height
during the descent
Aircraft
E75L
Remarks
had the airport in sight at 400-500FT above ground
B737 descending, 8 nm northeast, 8:28 pm EDT (00:28 UTC): scattered clouds above 8,000 ft, fog, snow, remarks: broke out about 100FT above mins. 1626 nm along the route, 8 nm northeast of the line.
as filed, and in English
```
BZN UA /OV BZN/TM 0028/FLDURD/TP B737/SK SCT080/WX 1/2SM SN FG/RM BROKE OUT ABOUT 100FT ABOVE MINS
```
Report
a routine report filed through BZN
Where
over BZN
Time
00:28 UTC
Height
during the descent
Aircraft
B737
Sky
scattered clouds from 8,000 ft
Weather
1/2SM, snow, fog
Remarks
broke out about 100FT above mins

6 more routine reports are on the map.

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 22 forecast points nearest it (CHS, CAE, GSP, TYS, BNA, EVV, CGI, STL, COU, MKC, DSM, OMA, GRI, ONL, PIR, RAP, BIL, DLN, LWS, GEG, YKM, SEA). 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 3 kt	+1 kt	13 °C	119 kt	17 h 36 min	12:29 pm PDT (19:29 UTC)
6,500 ft	290° at 5 kt	+4 kt	11 °C	116 kt	18 h 04 min	12:57 pm PDT (19:57 UTC)
8,500 ft	280° at 7 kt	+7 kt	7 °C	113 kt	18 h 32 min	1:25 pm PDT (20:25 UTC)
10,500 ft	270° at 11 kt	+9 kt	4 °C	111 kt	18 h 52 min	1:45 pm PDT (20:45 UTC)
12,500 ft	260° at 13 kt	+11 kt	1 °C	109 kt	19 h 13 min	2:06 pm PDT (21:06 UTC)
14,500 ft	260° at 15 kt	+13 kt	-3 °C	107 kt	19 h 35 min	2:28 pm PDT (21:28 UTC)
16,500 ft	260° at 17 kt	+14 kt	-8 °C	106 kt	19 h 46 min	2:39 pm PDT (21:39 UTC)
18,000 ft FL180	260° at 18 kt	+15 kt	-10 °C	105 kt	19 h 57 min	2:50 pm PDT (21:50 UTC)
24,000 ft FL240	250° at 25 kt	+19 kt	-21 °C	101 kt	20 h 45 min	3:38 pm PDT (22:38 UTC)
30,000 ft FL300	250° at 30 kt	+22 kt	-34 °C	98 kt	21 h 23 min	4:16 pm PDT (23:16 UTC)
34,000 ft FL340	250° at 38 kt	+28 kt	-41 °C	92 kt	22 h 46 min	5:39 pm PDT (00:39 UTC)
39,000 ft FL390	260° at 44 kt	+36 kt	-48 °C	84 kt	24 h 56 min	7:49 pm PDT (02:49 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
CHS	used from 0 nm out; 25 nm from the line	260/22	280/26 12°	260/37 12°	250/40 8°	240/54 -4°	230/55 -15°	220/61 -31°	200/66 -41°	210/62 -52°
CAE	used from 50 nm out; 18 nm from the line	260/27	310/26 11°	280/31 9°	270/36 7°	250/39 -4°	230/57 -16°	220/74 -30°	220/83 -40°	220/73 -51°
GSP	used from 100 nm out; 46 nm from the line	300/22	310/22 11°	300/22 7°	290/28 5°	270/36 -5°	250/42 -18°	230/54 -31°	230/59 -40°	230/65 -50°
TYS	used from 199 nm out; 45 nm from the line	290/19	310/22 11°	330/25 7°	330/34 3°	320/37 -7°	300/37 -18°	300/37 -34°	280/29 -39°	270/29 -48°
BNA	used from 299 nm out; 64 nm from the line	280/13	340/34 16°	330/38 10°	330/44 5°	330/39 -8°	330/38 -19°	320/49 -34°	330/53 -40°	330/35 -47°
EVV	used from 449 nm out; 41 nm from the line	310/13	340/26 16°	330/29 10°	330/32 4°	330/30 -9°	340/38 -20°	330/60 -35°	320/57 -41°	330/39 -48°
CGI	used from 499 nm out; 53 nm from the line	250/10	290/12 17°	290/18 11°	300/22 5°	320/25 -8°	330/30 -18°	320/53 -33°	320/66 -42°	320/56 -50°
STL	used from 549 nm out; 40 nm from the line	210/13	260/16 17°	270/21 10°	280/24 5°	310/20 -7°	320/22 -18°	320/44 -33°	320/59 -43°	310/69 -51°
COU	used from 648 nm out; 38 nm from the line	210/16	220/19 15°	240/33 10°	250/29 7°	280/21 -6°	280/19 -18°	300/34 -31°	300/40 -42°	300/60 -52°
MKC	used from 748 nm out; 76 nm from the line	200/28	220/30 16°	270/20 11°	280/22 7°	260/27 -6°	270/27 -18°	280/38 -32°	270/38 -40°	280/50 -52°
DSM	used from 798 nm out; 75 nm from the line	200/32	240/27 17°	260/19 10°	260/16 5°	260/19 -7°	240/22 -19°	270/20 -32°	270/38 -42°	290/58 -53°
OMA	used from 848 nm out; 39 nm from the line	190/34	230/34 19°	250/25 12°	250/18 6°	250/22 -7°	250/28 -19°	260/34 -32°	260/39 -41°	280/56 -51°
GRI	used from 948 nm out; 59 nm from the line		210/31 19°	240/21 14°	240/17 6°	260/27 -7°	260/34 -18°	240/45 -32°	250/56 -40°	260/62 -51°
ONL	used from 997 nm out; 36 nm from the line		200/20 17°	230/26 14°	240/21 7°	250/27 -9°	260/32 -19°	240/44 -34°	240/56 -41°	250/62 -51°
PIR	used from 1147 nm out; 95 nm from the line		L/V 17°	230/13 12°	220/22 6°	250/31 -9°	250/34 -21°	240/50 -35°	230/61 -43°	240/62 -51°
RAP	used from 1197 nm out; 52 nm from the line		120/15 12°	180/22 11°	220/26 5°	230/35 -9°	240/40 -22°	240/50 -37°	240/51 -41°	240/47 -47°
BIL	used from 1396 nm out; 108 nm from the line		080/24	130/14 -1°	180/33 0°	210/43 -10°	220/58 -21°	200/55 -36°	220/75 -44°	240/83 -48°
DLN	used from 1596 nm out; 64 nm from the line			080/10 -3°	180/8 -3°	180/23 -14°	200/58 -22°	200/80 -36°	220/85 -41°	230/81 -45°
LWS	used from 1746 nm out; 101 nm from the line	010/5	050/14 -2°	040/12 -6°	160/7 -10°	190/30 -22°	200/54 -27°	200/48 -35°	210/40 -37°	230/32 -41°
GEG	used from 1895 nm out; 48 nm from the line		050/18 -2°	060/19 -8°	L/V -11°	160/11 -24°	190/17 -31°	200/19 -35°	220/14 -37°	250/11 -41°
YKM	used from 1945 nm out; 60 nm from the line	030/16	020/18 0°	030/30 -8°	030/23 -13°	020/40 -23°	010/73 -29°	010/54 -36°	360/29 -37°	330/16 -40°
SEA	used from 2045 nm out; 25 nm from the line	360/9	350/10 1°	010/10 -5°	030/20 -11°	020/60 -17°	010/86 -26°	360/90 -40°	010/68 -42°	360/31 -43°

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
CHS Charleston, SC	departure	VFR Sky: a broken layer at 4,400 feet	from the west-southwest (240°) at 6 knots	10+ mi	4,400 ft	46 ft	8:56 pm EDT (00:56 UTC)
CAE Columbia, SC	80 nm out, 17 nm northeast of the line, tower	VFR Sky: a few clouds at 3,000 feet	from the southwest (230°) at 5 knots	10+ mi	none	235 ft	00:56 UTC
MNV Madisonville, TN	269 nm out, 2 nm east of the line	marginal VFR Sky: overcast at 1,400 feet	from the west (280°) at 4 knots	10+ mi	1,400 ft	1,031 ft	01:35 UTC
CPS Cahokia/St Louis, IL	598 nm out, 2 nm northeast of the line, tower	VFR	from the south-southeast (160°) at 5 knots	10+ mi	none	412 ft	00:53 UTC
TRX Trenton, MO	778 nm out, 4 nm northwest of the line	no report just now				757 ft
OMA Omaha, NE	908 nm out, 14 nm north of the line, tower	VFR Sky: a broken layer at 25,000 feet	from the south-southeast (160°) at 9 knots	10+ mi	25,000 ft	984 ft	00:52 UTC
ANW Ainsworth, NE	1107 nm out, 2 nm northeast of the line	VFR	from the north (360°) at 7 knots	10+ mi	none	2,588 ft	01:35 UTC
CUT Custer, SD	1277 nm out, 4 nm northwest of the line	VFR	from the east-northeast (070°) at 11 knots	10+ mi	none	5,619 ft	00:53 UTC
BZN Bozeman, MT	1626 nm out, 8 nm northeast of the line, tower	low IFR Sky: overcast at 300 feet Weather: light snow, mist	calm	1.5 mi	300 ft	4,473 ft	01:25 UTC
LWS Lewiston, ID	1865 nm out, 22 nm southwest of the line, tower	VFR Sky: overcast at 6,000 feet	from the west (270°) at 6 knots	10+ mi	6,000 ft	1,442 ft	00:56 UTC
MWH Moses Lake, WA	1975 nm out, 8 nm northeast of the line, tower	VFR Sky: overcast at 10,000 feet	from the northeast (050°) at 13 knots, gusting to 18	10+ mi	10,000 ft	1,188 ft	00:52 UTC
SEA Seattle, WA	destination	VFR Sky: a few clouds at 5,000 feet	from the north (350°) at 11 knots	10+ mi	none	432 ft	5:53 pm PDT (00:53 UTC)

The highest airport on this list sits at 5,619 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.

At SEA when you get there the forecast at the estimated arrival, 12:29 pm PDT (19:29 UTC)

Wind from the west at 6 knots, visibility more than 6 miles, clear skies VFR

The whole forecast for SEA

From Sun 5:00 pm PDT (00:00 UTC): wind from the north at 12 knots, gusting to 20, visibility more than 6 miles, a few clouds at 2,000 feet, a few clouds at 5,000 feet
From Sun 8:00 pm PDT (03:00 UTC): wind from the northeast at 6 knots, visibility more than 6 miles, clear skies
From Mon 3:00 am PDT (10:00 UTC): wind from the southeast at 4 knots, visibility more than 6 miles, patches of fog, clear skies
From Mon 9:00 am PDT (16:00 UTC): wind from the south-southeast at 4 knots, visibility more than 6 miles, clear skies
From Mon 11:00 am PDT (18:00 UTC): wind from the west at 6 knots, visibility more than 6 miles, clear skies
From Mon 8:00 pm PDT (03:00 UTC): wind from the northwest at 5 knots, visibility more than 6 miles, scattered clouds at 25,000 feet

The forecast for CHS, the departure

From Sun 8:00 pm EDT (00:00 UTC): wind from the west at 8 knots, visibility more than 6 miles, scattered clouds at 4,000 feet
At times between Sun 8:00 pm EDT (00:00 UTC) and 10:00 pm EDT (02:00 UTC): a broken layer at 4,000 feet
From Sun 11:00 pm EDT (03:00 UTC): wind from the west at 6 knots, visibility more than 6 miles, clear skies
From Mon 11:00 am EDT (15:00 UTC): wind from the northwest at 8 knots, visibility more than 6 miles, clear skies

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

6/0708 Goodlettsville, TN, Saturday, August 1, 2026 through Sunday, August 1, 2027 UTC 21 nm from the route, 389 nm along the route · security · until 1 August · ZME
6/7634 CENTRALIA, MO, Monday, October 12, 2026 UTC 15 nm from the route, 698 nm along the route · a hazard on the ground (fire-fighting, a chemical spill, rescue work) · today · ZKC

Daylight

Sunset at CHS 6:50 pm EDT (22:50 UTC), at SEA 6:27 pm PDT (01:27 UTC) (civil twilight ends 6:58 pm PDT (01:58 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 Southeast · loop National Weather Service

Radar now, the lower Mississippi valley · 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: Charleston Afb/Intl Airport, Seattle-Tacoma International.