Plan a flight · Mon 3:40 am PDT (10:40 UTC)

Mineta San Jose International to St. Louis Lambert International SJC → STL

1,487 nautical miles (1,711 statute miles) east on a straight line, true course 077°, about 064° magnetic at the departure end (variation 13E). At 120 knots that is 8 h 21 min at the quickest height in today's winds (34,000 ft, a 58-knot tailwind), arriving about 2:01 pm CDT (19:01 UTC). Right now SJC is VFR, wind from the south-southeast (160°) at 4 knots; STL is VFR, wind from the southwest (230°) at 8 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: 9 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 W20W: thunderstorms (a convective SIGMET) up to 26,000 ft, moving from the south at 35 knots, until 4:55 am PDT (11:55 UTC). Over the route from 339 to 439 nm out.

as issued

WSUS33 KKCI 120955
MKCW WST 120955
CONVECTIVE SIGMET 20W
VALID UNTIL 1155Z
AZ UT NV
FROM 50E ELY-40ENE BCE-70NNE PGS-70N LAS-ELY-50E ELY
AREA TS MOV FROM 20035KT. TOPS TO FL260.

AIRMET TANGO 1W: moderate turbulence above 18,000 ft from 18,000 ft to 39,000 ft. Over the first 170 nm of the route.
AIRMET SIERRA 2E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 80 to 130 nm out.
AIRMET TANGO 1W: moderate turbulence below 18,000 ft (due to mountain wave) up to 12,000 ft. Over the route from 269 to 639 nm out.
AIRMET ZULU 2C: moderate icing up to 23,000 ft. Over the route from 319 to 669 nm out.
AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 329 to 719 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 459 to 868 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 649 to 679 nm out.
AIRMET TANGO 2W: moderate turbulence below 18,000 ft (due to mountain wave) up to 22,000 ft. Over the route from 649 to 828 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 808 to 888 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 998 to 1427 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 SJC.

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

A35K at 32,000 ft, 47 nm north, 1:39 am PDT (08:39 UTC): moderate chop turbulence, remarks: fdcs zoa. At the departure end, 47 nm north of the line.
as filed, and in English
```
OAK UA /OV OAK348024/TM 0839/FL320/TP A35K/TB MOD CHOP/RM FDCS ZOA
```
Report
a routine report filed through OAK
Where
24 nm north (348°) of OAK
Time
08:39 UTC
Height
at 32,000 ft
Aircraft
A35K
Turbulence
moderate chop
Remarks
fdcs zoa
B38M at 22,000 ft, 3 nm south, 1:14 am PDT (08:14 UTC): no turbulence, remarks: zdvwc. 778 nm along the route, 3 nm south of the line.
as filed, and in English
```
DEN UA /OV DEN216059/TM 0814/FL220/TP B38M/TB NEG/RM ZDVWC
```
Report
a routine report filed through DEN
Where
59 nm southwest (216°) of DEN
Time
08:14 UTC
Height
at 22,000 ft
Aircraft
B38M
Turbulence
none
Remarks
zdvwc
B38M at 37,000 ft, 35 nm south, 12:42 am PDT (07:42 UTC): light chop turbulence, remarks: mtw +/-7KT zdvwc. 778 nm along the route, 35 nm south of the line.
as filed, and in English
```
PUB UA /OV PUB280055/TM 0742/FL370/TP B38M/TB LGT CHOP/RM MTW +/-7KT. ZDVWC
```
Report
a routine report filed through PUB
Where
55 nm west (280°) of PUB
Time
07:42 UTC
Height
at 37,000 ft
Aircraft
B38M
Turbulence
light chop
Remarks
mtw +/-7KT zdvwc
B763 at 23,000 ft, 49 nm north, 3:26 am PDT (10:26 UTC): light chop turbulence, remarks: zdvwc. 788 nm along the route, 49 nm north of the line.
as filed, and in English
```
DEN UA /OV DEN278037/TM 1026/FL230/TP B763/TB OCNL LGT CHOP/RM ZDVWC
```
Report
a routine report filed through DEN
Where
37 nm west (278°) of DEN
Time
10:26 UTC
Height
at 23,000 ft
Aircraft
B763
Turbulence
occasional light chop
Remarks
zdvwc
B737 descending, 37 nm north, 1:10 am PDT (08:10 UTC): light chop turbulence. 818 nm along the route, 37 nm north of the line.
as filed, and in English
```
DEN UA /OV DEN/TM 0810/FLDURD/TP B737/TB LGT CHOP
```
Report
a routine report filed through DEN
Where
over DEN
Time
08:10 UTC
Height
during the descent
Aircraft
B737
Turbulence
light chop

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 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 12 forecast points nearest it (SFO, FAT, BIH, ELY, BCE, GJT, DEN, GLD, SLN, MKC, COU, STL). A plus sign is a headwind, a minus sign a tailwind.

Height	Average wind	Head- or tailwind	Temperature	Ground speed	Time en route	Arrival
5,500 ft	250° at 21 kt	−19 kt		139 kt	10 h 42 min	4:22 pm CDT (21:22 UTC)
7,500 ft	240° at 19 kt	−17 kt	10 °C	137 kt	10 h 51 min	4:31 pm CDT (21:31 UTC)
9,500 ft	230° at 18 kt	−15 kt	7 °C	135 kt	11 h 01 min	4:41 pm CDT (21:41 UTC)
11,500 ft	230° at 21 kt	−16 kt	2 °C	136 kt	10 h 56 min	4:36 pm CDT (21:36 UTC)
13,500 ft	230° at 25 kt	−19 kt	-1 °C	139 kt	10 h 42 min	4:22 pm CDT (21:22 UTC)
15,500 ft	230° at 29 kt	−23 kt	-6 °C	143 kt	10 h 24 min	4:04 pm CDT (21:04 UTC)
17,500 ft	230° at 34 kt	−27 kt	-10 °C	147 kt	10 h 07 min	3:47 pm CDT (20:47 UTC)
18,000 ft FL180	230° at 35 kt	−28 kt	-11 °C	148 kt	10 h 03 min	3:43 pm CDT (20:43 UTC)
24,000 ft FL240	230° at 42 kt	−36 kt	-22 °C	156 kt	9 h 32 min	3:12 pm CDT (20:12 UTC)
30,000 ft FL300	240° at 58 kt	−54 kt	-31 °C	174 kt	8 h 33 min	2:13 pm CDT (19:13 UTC)
34,000 ft FL340	250° at 60 kt	−58 kt	-37 °C	178 kt	8 h 21 min	2:01 pm CDT (19:01 UTC)
39,000 ft FL390	250° at 56 kt	−54 kt	-46 °C	174 kt	8 h 33 min	2:13 pm CDT (19:13 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
SFO	used from 0 nm out; 47 nm from the line	090/9	050/12 4°	010/17 -2°	350/34 -3°	360/70 -11°	360/75 -22°	350/57 -38°	330/37 -42°	280/25 -44°
FAT	used from 50 nm out; 61 nm from the line	140/11	180/15 3°	150/14 -3°	200/14 -6°	240/17 -16°	320/25 -23°	270/22 -31°	240/29 -37°	230/36 -44°
BIH	used from 100 nm out; 54 nm from the line		L/V	020/6 0°	140/7 -7°	210/31 -16°	230/34 -26°	220/43 -30°	220/52 -36°	220/46 -43°
ELY	used from 249 nm out; 91 nm from the line			210/34 1°	220/40 -4°	220/39 -17°	210/51 -24°	220/65 -30°	220/60 -37°	220/56 -44°
BCE	used from 399 nm out; 71 nm from the line				200/32 -2°	210/57 -15°	220/71 -22°	220/69 -30°	220/64 -38°	220/67 -44°
GJT	used from 549 nm out; 67 nm from the line			220/26 6°	230/39 0°	220/55 -13°	230/60 -23°	230/78 -31°	230/80 -35°	230/74 -44°
DEN	used from 748 nm out; 62 nm from the line			270/24 11°	230/13 5°	230/48 -8°	230/46 -20°	230/63 -30°	240/78 -36°	240/78 -48°
GLD	used from 898 nm out; 36 nm from the line		260/37	260/25 14°	250/27 8°	230/36 -8°	230/49 -21°	250/71 -30°	260/82 -36°	250/73 -48°
SLN	used from 1048 nm out; 78 nm from the line	230/49	240/41 22°	230/26 15°	220/21 7°	240/38 -8°	240/44 -21°	260/77 -29°	270/70 -36°	270/63 -48°
MKC	used from 1198 nm out; 66 nm from the line	240/49	240/21 20°	220/19 13°	230/21 6°	260/26 -7°	250/37 -19°	270/66 -31°	270/65 -38°	280/60 -48°
COU	used from 1347 nm out; 29 nm from the line	250/36	260/14 16°	250/5 12°	260/12 6°	260/24 -7°	260/35 -19°	280/58 -31°	280/62 -40°	290/60 -49°
STL	used from 1447 nm out; 20 nm from the line	250/26	240/21 15°	240/22 11°	250/23 6°	270/28 -7°	260/30 -19°	280/52 -31°	280/57 -40°	300/57 -49°

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
SJC San Jose, CA	departure	VFR Sky: a few clouds at 8,000 feet, a few clouds at 9,500 feet	from the south-southeast (160°) at 4 knots	10+ mi	none	62 ft	2:53 am PDT (09:53 UTC)
MOD Modesto, CA	50 nm out, 5 nm northwest of the line, tower	VFR Sky: a broken layer at 11,000 feet	from the west-southwest (250°) at 4 knots	10+ mi	11,000 ft	99 ft	09:53 UTC
TPH Tonopah, NV	230 nm out, 6 nm southeast of the line	VFR Sky: overcast at 6,000 feet	from the east (090°) at 3 knots	10+ mi	6,000 ft	5,430 ft	09:56 UTC
MLF Milford, UT	429 nm out, 13 nm south of the line	VFR Sky: overcast at 5,000 feet Weather: light rain, mist	from the south (190°) at 16 knots, gusting to 26	6 mi	5,000 ft	5,042 ft	09:52 UTC
RIF Richfield, UT	469 nm out, 3 nm east of the line	VFR Sky: overcast at 7,000 feet	from the west-southwest (240°) at 8 knots	10+ mi	7,000 ft	5,318 ft	10:35 UTC
GJT Grand Junction, CO	639 nm out, 7 nm north of the line, tower	VFR Sky: a broken layer at 7,500 feet	from the southeast (130°) at 16 knots, gusting to 20	10+ mi	7,500 ft	4,861 ft	09:53 UTC
COS Colorado Springs, CO	818 nm out, 23 nm south of the line, tower	VFR Sky: scattered clouds at 20,000 feet	from the southwest (230°) at 16 knots, gusting to 28	10+ mi	none	6,187 ft	09:54 UTC
ITR Burlington, CO	928 nm out, 2 nm east of the line	VFR	from the southwest (220°) at 10 knots	10+ mi	none	4,218 ft	09:53 UTC
MHK Manhattan, KS	1188 nm out, 4 nm east of the line, tower	VFR	from the south-southwest (210°) at 9 knots	10+ mi	none	1,066 ft	09:52 UTC
TOP Topeka, KS	1237 nm out, 4 nm southeast of the line, tower	VFR	from the south (180°) at 11 knots, gusting to 19	10+ mi	none	881 ft	09:53 UTC
COU Columbia, MO	1397 nm out, 6 nm southeast of the line, tower	VFR	from the south-southwest (200°) at 7 knots	10+ mi	none	889 ft	09:54 UTC
STL St Louis, MO	destination	VFR Sky: a few clouds at 25,000 feet	from the southwest (230°) at 8 knots	10+ mi	none	617 ft	4:51 am CDT (09:51 UTC)

The highest airport on this list sits at 6,187 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.

At STL when you get there the forecast at the estimated arrival, 2:01 pm CDT (19:01 UTC)

Wind from the southwest at 12 knots, gusting to 20, visibility more than 6 miles, a few clouds at 25,000 feet VFR

The whole forecast for STL

From Mon 4:00 am CDT (09:00 UTC): wind from the southwest at 7 knots, visibility more than 6 miles, scattered clouds at 25,000 feet
From Mon 11:00 am CDT (16:00 UTC): wind from the southwest at 12 knots, gusting to 20, visibility more than 6 miles, a few clouds at 25,000 feet
From Mon 6:00 pm CDT (23:00 UTC): wind from the south-southwest at 8 knots, visibility more than 6 miles, a few clouds at 25,000 feet

The forecast for SJC, the departure

From Sun 11:00 pm PDT (06:00 UTC): wind from the southeast at 4 knots, visibility more than 6 miles, clear skies
From Mon 1:00 pm PDT (20:00 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

6/7094 45NM NE MERCED, CA, Sunday, October 4, 2026 through Tuesday, October 20, 2026 UTC 4 nm from the route, 120 nm along the route · a hazard on the ground (fire-fighting, a chemical spill, rescue work) · until 20 October · ZOA
6/8784 LAKE GEORGE, CO, Sunday, October 11, 2026 through Tuesday, October 13, 2026 UTC 10 nm from the route, 788 nm along the route · a hazard on the ground (fire-fighting, a chemical spill, rescue work) · until 13 October · ZDV
6/7634 CENTRALIA, MO, Monday, October 12, 2026 UTC 14 nm from the route, 1407 nm along the route · a hazard on the ground (fire-fighting, a chemical spill, rescue work) · today · ZKC

Daylight

Sunset at SJC 6:33 pm PDT (01:33 UTC), at STL 6:27 pm CDT (23:27 UTC) (civil twilight ends 6:54 pm CDT (23:54 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 Pacific Southwest · loop National Weather Service

Radar now, the southern Rockies · loop National Weather Service

Radar now, the southern Plains · 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: Mineta San Jose International, St. Louis Lambert International.