Plan a flight · Mon 12:39 am MDT (06:39 UTC)

City Of Colorado Springs Municipal to Oakland San Francisco Bay Airport COS → OAK

827 nautical miles (952 statute miles) west on a straight line, true course 271°, about 263° magnetic at the departure end (variation 8E). At 120 knots that is 7 h 35 min at the quickest height in today's winds (8,500 ft, a 11-knot headwind), arriving about 7:14 am PDT (14:14 UTC), after sunset at the destination. Right now COS is VFR, wind from the south (180°) at 10 knots; OAK is VFR, wind from the southeast (130°) 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: 4 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 C10C: thunderstorms (a convective SIGMET) up to 34,000 ft, moving from the southwest at 40 knots, until 1:55 am MDT (07:55 UTC). Near the route, at the departure end.

as issued

WSUS32 KKCI 120555
MKCC WST 120555
CONVECTIVE SIGMET 10C
VALID UNTIL 0755Z
CO NM
FROM 20NNE PUB-40WSW LAA-30WSW CIM-50WSW ALS-50ESE HBU-20NNE PUB
AREA TS MOV FROM 22040KT. TOPS TO FL340.

SIGMET W15W: thunderstorms (a convective SIGMET) up to 28,000 ft, moving from the southwest at 20 knots, until 1:55 am MDT (07:55 UTC). Over the route from 518 to 618 nm out.
as issued
```
WSUS33 KKCI 120555
MKCW WST 120555
CONVECTIVE SIGMET 15W
VALID UNTIL 0755Z
UT NV
FROM 60WNW BVL-10NE BVL-80E OAL-40SE OAL-20W OAL-60WNW BVL
AREA TS MOV FROM 24020KT. TOPS TO FL280.
```
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 first 169 nm of the route.
AIRMET TANGO 4W: moderate turbulence above 18,000 ft from 18,000 ft to 38,000 ft. Over the first 339 nm of the route.
AIRMET TANGO 4W: moderate turbulence below 18,000 ft up to 18,000 ft. Over the first 538 nm of the route.
AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 179 to 588 nm out.
AIRMET ZULU 2C: moderate icing up to 23,000 ft. Over the route from 229 to 538 nm out.
AIRMET TANGO 1W: moderate turbulence above 18,000 ft from 18,000 ft to 39,000 ft. Over the last 90 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 COS.

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

urgent E75L at 9,000 ft, 25 nm north, 10:30 pm MDT (04:30 UTC): remarks: low-level wind shear + 20K 1000-1500 above ground on approach. 100 nm along the route, 25 nm north of the line.
as filed, and in English
```
ASE UUA /OV ASE/TM 0430/FL090/TP E75L/RM LLWS +/- 20K 1000-1500 AGL ON APCH
```
Report
an urgent report filed through ASE
Where
over ASE
Time
04:30 UTC
Height
at 9,000 ft
Aircraft
E75L
Remarks
low-level wind shear + 20K 1000-1500 above ground on approach
PC12 at 17,000 ft, 15 nm south, 10:52 pm MDT (04:52 UTC): moderate turbulence, moderate rime icing, -15 °C, remarks: entered by zoa fdcs. 618 nm along the route, 15 nm south of the line.
as filed, and in English
```
TPH UA /OV OAL/TM 0452/FL 170/TP PC12/TA M15/TB MOD/IC MOD RIME/RM ENTERED BY ZOA FDCS AWC-WEB
```
Report
a routine report filed through TPH
Where
over OAL
Time
04:52 UTC
Height
at 17,000 ft
Aircraft
PC12
Temperature
−15 °C
Turbulence
moderate
Icing
moderate rime
Remarks
entered by zoa fdcs
E170 at 22,500 ft, 19 nm north, 11:06 pm MDT (05:06 UTC): light to moderate turbulence up to 23,000 ft, remarks: during the descent tbarr star ZDVWC-13. 40 nm along the route, 19 nm north of the line.
as filed, and in English
```
DEN UA /OV DEN216057/TM 0506/FL225/TP E170/TB CONS LGT OCNL MOD BLO 230/RM DURD TBARR STAR. ZDVWC-13
```
Report
a routine report filed through DEN
Where
57 nm southwest (216°) of DEN
Time
05:06 UTC
Height
at 22,500 ft
Aircraft
E170
Turbulence
continuous light occasional moderate below 23,000 ft
Remarks
during the descent tbarr star ZDVWC-13
B738 at 23,000 ft, 28 nm north, 12:23 am MDT (06:23 UTC): no turbulence from 23,000 ft to 26,000 ft, clear from 23,000 ft to 60,000 ft, remarks: during the descent sskii star ZDVWC-06. 50 nm along the route, 28 nm north of the line.
as filed, and in English
```
DEN UA /OV DEN230060/TM 0623/FL230/TP B738/SK SKC/TB NEG 230-260/RM DURD SSKII STAR. ZDVWC-06
```
Report
a routine report filed through DEN
Where
60 nm southwest (230°) of DEN
Time
06:23 UTC
Height
at 23,000 ft
Aircraft
B738
Sky
clear
Turbulence
no from 23,000 ft to 26,000 ft
Remarks
during the descent sskii star ZDVWC-06
PC12 at 26,000 ft, 32 nm south, 12:27 am MDT (06:27 UTC): light chop turbulence, remarks: ZDVWC-12. 70 nm along the route, 32 nm south of the line.
as filed, and in English
```
GUC UA /OV HBU090040/TM 0627/FL260/TP PC12/TB OCNL LGT CHOP/RM ZDVWC-12
```
Report
a routine report filed through GUC
Where
40 nm east (090°) of HBU
Time
06:27 UTC
Height
at 26,000 ft
Aircraft
PC12
Turbulence
occasional light chop
Remarks
ZDVWC-12
E170 at 4,800 ft, 20 nm north, 12:31 am MDT (06:31 UTC): no turbulence, no icing, clear from 4,800 ft to 60,000 ft, remarks: during the descent rnav Y 11 lgjt zdvwc. 179 nm along the route, 20 nm north of the line.
as filed, and in English
```
GJT UA /OV GJT/TM 0631/FL048/TP E170/SK SKC/TB NEG/IC NEG/RM DURD RNAV Y 11 LGJT. ZDVWC-
```
Report
a routine report filed through GJT
Where
over GJT
Time
06:31 UTC
Height
at 4,800 ft
Aircraft
E170
Sky
clear
Turbulence
none
Icing
none
Remarks
during the descent rnav Y 11 lgjt zdvwc
A321 at 31,000 ft, 5 nm southwest, 12:15 am MDT (06:15 UTC): light to moderate chop turbulence, remarks: mountain wave zlc. 279 nm along the route, 5 nm southwest of the line.
as filed, and in English
```
CNY UA /OV HVE340015/TM 0615/FL310/TP A321/TB OCNL LGT-MOD CHOP /RM MTN WAVE /ZLC
```
Report
a routine report filed through CNY
Where
15 nm north (340°) of HVE
Time
06:15 UTC
Height
at 31,000 ft
Aircraft
A321
Turbulence
occasional light to moderate chop
Remarks
mountain wave zlc

Winds aloft along the route, and the time en route the forecast for use 02:00–09:00 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 8 forecast points nearest it (PUB, ALS, GJT, BCE, ELY, BIH, SAC, SFO). A plus sign is a headwind, a minus sign a tailwind.

Height	Average wind	Head- or tailwind	Temperature	Ground speed	Time en route	Arrival
8,500 ft	210° at 20 kt	+11 kt	4 °C	109 kt	7 h 35 min	7:14 am PDT (14:14 UTC)
10,500 ft	220° at 22 kt	+15 kt	1 °C	105 kt	7 h 53 min	7:32 am PDT (14:32 UTC)
12,500 ft	220° at 23 kt	+17 kt	-2 °C	103 kt	8 h 02 min	7:41 am PDT (14:41 UTC)
14,500 ft	220° at 26 kt	+18 kt	-6 °C	102 kt	8 h 06 min	7:45 am PDT (14:45 UTC)
16,500 ft	220° at 29 kt	+20 kt	-11 °C	100 kt	8 h 16 min	7:55 am PDT (14:55 UTC)
18,000 ft FL180	220° at 32 kt	+21 kt	-14 °C	99 kt	8 h 21 min	8:00 am PDT (15:00 UTC)
24,000 ft FL240	230° at 40 kt	+30 kt	-23 °C	90 kt	9 h 11 min	8:50 am PDT (15:50 UTC)
30,000 ft FL300	230° at 49 kt	+37 kt	-29 °C	83 kt	9 h 58 min	9:37 am PDT (16:37 UTC)
34,000 ft FL340	230° at 53 kt	+40 kt	-34 °C	80 kt	10 h 20 min	9:59 am PDT (16:59 UTC)
39,000 ft FL390	220° at 49 kt	+36 kt	-44 °C	84 kt	9 h 51 min	9:30 am PDT (16:30 UTC)

Based on data from the 12th at 00:00 UTC; valid on the 12th at 06:00 UTC for use 02:00 to 09:00 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
PUB	used from 0 nm out; 47 nm from the line			230/25 13°	230/32 6°	220/44 -8°	230/49 -21°	240/70 -28°	240/67 -34°	240/58 -46°
ALS	used from 50 nm out; 85 nm from the line				230/37 4°	220/54 -9°	230/62 -22°	240/77 -26°	240/74 -33°	230/59 -45°
GJT	used from 100 nm out; 57 nm from the line			210/43 7°	230/45 1°	220/49 -12°	220/62 -22°	220/59 -28°	230/60 -33°	220/55 -45°
BCE	used from 249 nm out; 97 nm from the line				220/27 -1°	210/40 -13°	220/54 -21°	220/64 -30°	220/64 -34°	220/52 -44°
ELY	used from 399 nm out; 67 nm from the line			200/39 3°	210/27 -2°	210/45 -15°	220/56 -24°	210/60 -28°	210/63 -34°	220/61 -43°
BIH	used from 548 nm out; 90 nm from the line		L/V	240/7 1°	190/13 -3°	200/26 -16°	210/43 -26°	220/54 -28°	220/51 -35°	220/47 -43°
SAC	used from 698 nm out; 75 nm from the line	110/6	L/V 4°	010/11 -2°	350/11 -7°	340/24 -16°	360/44 -23°	330/24 -30°	270/21 -35°	230/23 -43°
SFO	used from 797 nm out; 24 nm from the line	120/13	090/14 5°	040/14 -1°	350/17 -5°	360/42 -14°	360/64 -23°	350/38 -32°	300/19 -37°	250/18 -44°

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
COS Colorado Springs, CO	departure	VFR Sky: a few clouds at 2,000 feet, a few clouds at 18,000 feet	from the south (180°) at 10 knots	10+ mi	none	6,187 ft	11:54 pm MDT (05:54 UTC)
AEJ Buena Vista, CO	70 nm out, 3 nm east of the line	VFR Sky: a broken layer at 7,500 feet, a broken layer at 8,500 feet	from the south-southeast (150°) at 5 knots	10+ mi	7,500 ft	7,950 ft	06:35 UTC
ASE Aspen, CO	100 nm out, 25 nm north of the line, tower	VFR Sky: a few clouds at 6,000 feet, a broken layer at 9,000 feet, overcast at 11,000 feet Weather: light rain	from the west (260°) at 4 knots	10+ mi	9,000 ft	7,837 ft	05:53 UTC
GJT Grand Junction, CO	179 nm out, 20 nm north of the line, tower	VFR Sky: a few clouds at 6,000 feet, overcast at 10,000 feet	variable at 4 knots	10+ mi	10,000 ft	4,861 ft	05:53 UTC
HVE Hanksville, UT	279 nm out, 19 nm south of the line	VFR Sky: a broken layer at 4,300 feet, a broken layer at 4,800 feet, overcast at 5,000 feet	from the southwest (220°) at 9 knots	10+ mi	4,300 ft	4,453 ft	06:10 UTC
RIF Richfield, UT	349 nm out, 5 nm northeast of the line	VFR Sky: a few clouds at 3,500 feet, scattered clouds at 6,000 feet, scattered clouds at 12,000 feet	from the north (360°) at 1 knots	10+ mi	none	5,318 ft	06:35 UTC
TPH Tonopah, NV	588 nm out, 16 nm southeast of the line	VFR Sky: overcast at 3,900 feet	from the north (010°) at 12 knots	10+ mi	3,900 ft	5,430 ft	06:28 UTC
SCK Stockton, CA	777 nm out, 3 nm northwest of the line, tower	VFR	from the northwest (310°) at 5 knots	10+ mi	none	32 ft	05:55 UTC
OAK Oakland, CA	destination	VFR Sky: a few clouds at 1,600 feet	from the southeast (130°) at 8 knots	10+ mi	none	9 ft	10:53 pm PDT (05:53 UTC)

The highest airport on this list sits at 7,950 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.

At OAK when you get there the forecast at the estimated arrival, 7:14 am PDT (14:14 UTC)

Wind from the east-southeast at 5 knots, visibility more than 6 miles, a few clouds at 1,500 feet VFR

The whole forecast for OAK

From Sun 11:00 pm PDT (06:00 UTC): wind from the south at 7 knots, visibility more than 6 miles, a few clouds at 1,500 feet
From Mon 2:00 am PDT (09:00 UTC): wind from the east-southeast at 5 knots, visibility more than 6 miles, a few clouds at 1,500 feet
From Mon 11:00 am PDT (18:00 UTC): wind from the west at 8 knots, visibility more than 6 miles, clear skies

The forecast for COS, the departure

From Mon 12:00 am MDT (06:00 UTC): wind from the south at 12 knots, visibility more than 6 miles, scattered clouds at 6,000 feet, a broken layer at 20,000 feet
From Mon 6:00 am MDT (12:00 UTC): wind from the north-northeast at 8 knots, visibility more than 6 miles, clear skies
From Mon 11:00 am MDT (17:00 UTC): wind from the south at 15 knots, gusting to 25, visibility more than 6 miles, scattered clouds at 12,000 feet
From Mon 1:00 pm MDT (19:00 UTC): wind from the south-southwest at 20 knots, gusting to 30, visibility more than 6 miles, scattered clouds at 12,000 feet
From Mon 7:00 pm MDT (01:00 UTC): wind from the south-southwest at 12 knots, visibility more than 6 miles, clear skies

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

6/8784 LAKE GEORGE, CO, Sunday, October 11, 2026 through Tuesday, October 13, 2026 UTC 6 nm from the route, at the departure end · a hazard on the ground (fire-fighting, a chemical spill, rescue work) · until 13 October · ZDV
6/7094 45NM NE MERCED, CA, Sunday, October 4, 2026 through Tuesday, October 20, 2026 UTC 19 nm from the route, 708 nm along the route · a hazard on the ground (fire-fighting, a chemical spill, rescue work) · until 20 October · ZOA
6/7231 Santa Clara, CA, Sunday, October 11, 2026 through Monday, October 12, 2026 UTC 20 nm from the route, at the destination end · drones kept away from a public gathering · until 12 October · ZOA

Daylight

Sunset at COS 6:23 pm MDT (00:23 UTC), at OAK 6:35 pm PDT (01:35 UTC) (civil twilight ends 7:02 pm PDT (02:02 UTC)). At 120 knots the arrival at OAK is before sunrise there (7:14 am PDT (14:14 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 southern Rockies · loop National Weather Service

Radar now, the Pacific Southwest · 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: City Of Colorado Springs Municipal, Oakland San Francisco Bay Airport.