Plan a flight · Mon 2:05 am MDT (08:05 UTC)

Northern Colorado Regional to Fresno Yosemite International FNL → FAT

723 nautical miles (832 statute miles) west on a straight line, true course 257°, about 248° magnetic at the departure end (variation 9E). At 120 knots that is 7 h 18 min at the quickest height in today's winds (8,500 ft, a 21-knot headwind), arriving about 8:23 am PDT (15:23 UTC). Right now FNL is VFR, wind from the south (180°) at 5 knots; FAT is VFR, wind from the east-southeast (120°) at 12 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: 2 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

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 149 nm of the route.
AIRMET TANGO 4W: moderate turbulence above 18,000 ft from 18,000 ft to 42,000 ft. Over the first 347 nm of the route.
AIRMET TANGO 4W: moderate turbulence below 18,000 ft up to 18,000 ft. Over the first 525 nm of the route.
AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 50 to 466 nm out.
AIRMET ZULU 2C: moderate icing up to 23,000 ft. Over the route from 59 to 505 nm out.
AIRMET TANGO 1W: moderate turbulence below 18,000 ft (due to mountain wave) up to 15,000 ft. Near the route, 555 nm along 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 FNL.

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

B737 at 18,000 ft, 8 nm north, 1:24 am MDT (07:24 UTC): moderate turbulence, remarks: FL180-130. At the departure end, 8 nm north of the line.
as filed, and in English
```
DEN UA /OV DEN330050/TM 0724/FL180/TP B737/TB MOD/RM FL180-130
```
Report
a routine report filed through DEN
Where
50 nm northwest (330°) of DEN
Time
07:24 UTC
Height
at 18,000 ft
Aircraft
B737
Turbulence
moderate
Remarks
FL180-130
B737 descending, 42 nm southeast, 1:10 am MDT (07:10 UTC): remarks: smooth. At the departure end, 42 nm southeast of the line.
as filed, and in English
```
DEN UA /OV DEN/TM 0710/FLDURD/TP B737/RM SMOOTH
```
Report
a routine report filed through DEN
Where
over DEN
Time
07:10 UTC
Height
during the descent
Aircraft
B737
Remarks
smooth
B738 descending, 42 nm southeast, 12:15 am MDT (06:15 UTC): light chop turbulence. At the departure end, 42 nm southeast of the line.
as filed, and in English
```
DEN UA /OV DEN/TM 0615/FLDURD/TP B738/TB LGT CHOP
```
Report
a routine report filed through DEN
Where
over DEN
Time
06:15 UTC
Height
during the descent
Aircraft
B738
Turbulence
light chop
A20N at 25,000 ft, 40 nm south, 12:19 am MDT (06:19 UTC): light chop turbulence up to 26,000 ft, remarks: during the climb ZDVWC-06. 40 nm along the route, 40 nm south of the line.
as filed, and in English
```
DEN UA /OV DEN250045/TM 0619/FL250/TP A20N/TB OCNL LGT CHOP BLO 260/RM DURC. ZDVWC-06
```
Report
a routine report filed through DEN
Where
45 nm west (250°) of DEN
Time
06:19 UTC
Height
at 25,000 ft
Aircraft
A20N
Turbulence
occasional light chop below 26,000 ft
Remarks
during the climb ZDVWC-06
E170 at 4,800 ft, 38 nm south, 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. 178 nm along the route, 38 nm south 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
PC12 at 12,000 ft, 39 nm south, 1:08 am MDT (07:08 UTC): light turbulence, no icing, 4 °C, remarks: instrument conditions ZDVWC-11. 208 nm along the route, 39 nm south of the line.
as filed, and in English
```
GJT UA /OV JNC237019/TM 0708/FL120/TP PC12/TA 04/TB OCNL LGT/IC NEG/RM IMC. ZDVWC-11
```
Report
a routine report filed through GJT
Where
19 nm southwest (237°) of JNC
Time
07:08 UTC
Height
at 12,000 ft
Aircraft
PC12
Temperature
4 °C
Turbulence
occasional light
Icing
none
Remarks
instrument conditions ZDVWC-11
A321 at 31,000 ft, 36 nm southeast, 12:15 am MDT (06:15 UTC): light to moderate chop turbulence, remarks: mountain wave zlc. 287 nm along the route, 36 nm southeast 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 6 forecast points nearest it (DEN, GJT, BCE, ELY, BIH, FAT). 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 28 kt	+21 kt	7 °C	99 kt	7 h 18 min	8:23 am PDT (15:23 UTC)
10,500 ft	220° at 29 kt	+24 kt	2 °C	96 kt	7 h 32 min	8:37 am PDT (15:37 UTC)
12,500 ft	220° at 31 kt	+27 kt	-1 °C	93 kt	7 h 46 min	8:51 am PDT (15:51 UTC)
14,500 ft	220° at 34 kt	+29 kt	-5 °C	91 kt	7 h 57 min	9:02 am PDT (16:02 UTC)
16,500 ft	220° at 38 kt	+31 kt	-10 °C	89 kt	8 h 07 min	9:12 am PDT (16:12 UTC)
18,000 ft FL180	210° at 41 kt	+32 kt	-13 °C	88 kt	8 h 13 min	9:18 am PDT (16:18 UTC)
24,000 ft FL240	220° at 52 kt	+43 kt	-23 °C	77 kt	9 h 23 min	10:28 am PDT (17:28 UTC)
30,000 ft FL300	220° at 57 kt	+48 kt	-29 °C	72 kt	10 h 02 min	11:07 am PDT (18:07 UTC)
34,000 ft FL340	220° at 57 kt	+50 kt	-34 °C	70 kt	10 h 20 min	11:25 am PDT (18:25 UTC)
39,000 ft FL390	220° at 53 kt	+46 kt	-44 °C	74 kt	9 h 46 min	10:51 am PDT (17:51 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
DEN	used from 0 nm out; 50 nm from the line			240/21 14°	250/44 6°	220/49 -8°	220/49 -21°	230/54 -30°	240/57 -35°	240/49 -45°
GJT	used from 99 nm out; 65 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 297 nm out; 82 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 396 nm out; 68 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 545 nm out; 81 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°
FAT	used from 694 nm out; 15 nm from the line	130/16	160/20 5°	190/28 -1°	210/25 -5°	220/27 -15°	230/21 -26°	220/42 -29°	220/44 -35°	220/44 -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
FNL Fort Collins/Loveland, CO	departure	VFR	from the south (180°) at 5 knots	10+ mi	none	5,020 ft	1:56 am MDT (07:56 UTC)
GNB Granby, CO	50 nm out, 12 nm southeast of the line	VFR	from the south (180°) at 3 knots	10+ mi	none	8,207 ft	07:55 UTC
EEO Meeker, CO	129 nm out, 10 nm northwest of the line	VFR Sky: a few clouds at 7,000 feet, scattered clouds at 9,500 feet, a broken layer at 11,000 feet	variable at 5 knots	10+ mi	11,000 ft	6,415 ft	07:53 UTC
PUC Price, UT	268 nm out, 19 nm north of the line	marginal VFR Sky: a broken layer at 1,800 feet, overcast at 3,000 feet	from the east (090°) at 6 knots	10+ mi	1,800 ft	5,957 ft	07:53 UTC
FOM Fillmore, UT	347 nm out, 6 nm northwest of the line	VFR Sky: scattered clouds at 7,000 feet, a broken layer at 9,000 feet, a broken layer at 12,000 feet	variable at 1 knots	10+ mi	9,000 ft	4,984 ft	07:55 UTC
MLF Milford, UT	386 nm out, 18 nm south of the line	VFR Sky: a few clouds at 6,000 feet, overcast at 9,000 feet Weather: light rain	from the south-southwest (210°) at 12 knots	10+ mi	9,000 ft	5,042 ft	07:52 UTC
BIH Bishop, CA	654 nm out, 10 nm north of the line	VFR	from the south-southeast (150°) at 17 knots, gusting to 27	10+ mi	none	4,124 ft	07:56 UTC
FAT Fresno, CA	destination	VFR Sky: scattered clouds at 9,500 feet, a broken layer at 12,000 feet, a broken layer at 15,000 feet	from the east-southeast (120°) at 12 knots	9 mi	12,000 ft	335 ft	12:53 am PDT (07:53 UTC)

The highest airport on this list sits at 8,207 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.

At FAT when you get there the forecast at the estimated arrival, 8:23 am PDT (15:23 UTC)

Wind light and variable, visibility more than 6 miles, scattered clouds at 25,000 feet VFR

The whole forecast for FAT

From Sun 11:00 pm PDT (06:00 UTC): wind from the southeast at 10 knots, visibility more than 6 miles, a few clouds at 3,000 feet, scattered clouds at 20,000 feet
From Mon 2:00 am PDT (09:00 UTC): wind light and variable, visibility more than 6 miles, scattered clouds at 25,000 feet

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

No temporary flight restriction on or near this route right now.

Daylight

Sunset at FNL 6:23 pm MDT (00:23 UTC), at FAT 6:25 pm PDT (01:25 UTC) (civil twilight ends 6:51 pm PDT (01:51 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: Northern Colorado Regional, Fresno Yosemite International.