Plan a flight · Sun 6:42 pm PDT (01:42 UTC)

Monterey Regional to Bozeman Yellowstone International MRY → BZN

732 nautical miles (842 statute miles) northeast on a straight line, true course 038°, about 023° magnetic at the departure end (variation 15E). At 120 knots that is 3 h 57 min at the quickest height in today's winds (34,000 ft, a 65-knot tailwind), arriving about 11:39 pm MDT (05:39 UTC), after sunset at the destination. Right now MRY is marginal VFR, wind from the southwest (220°) at 11 knots; BZN is low IFR, wind calm. 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: 1 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 5W: thunderstorms (a convective SIGMET) up to 33,000 ft, moving from the southwest at 20 knots, until 7:55 pm PDT (02:55 UTC). Near the route, 336 nm along the route.

as issued

WSUS33 KKCI 120055
MKCW WST 120055
CONVECTIVE SIGMET 5W
VALID UNTIL 0255Z
NV
FROM 10NNE BAM-40WSW BVL-60SW ELY-10SE OAL-30WNW OAL-10NNE BAM
AREA TS MOV FROM 23020KT. TOPS TO FL330.

AIRMET TANGO 1W: moderate turbulence above 18,000 ft from 18,000 ft to 39,000 ft. Near the route, at the departure end.
AIRMET TANGO 3W: moderate turbulence below 18,000 ft (due to mountain wave) up to 15,000 ft. Over the route from 148 to 148 nm out.
AIRMET ZULU 3C: moderate icing up to 22,000 ft. Over the route from 228 to 653 nm out.
AIRMET TANGO 4W: moderate turbulence above 18,000 ft from 18,000 ft to 36,000 ft. Over the last 455 nm of the route.
AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the last 198 nm of the route.
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 last 188 nm of the route.
AIRMET ZULU 2C: moderate icing up to 16,000 ft. Near the route, 643 nm along the route.
AIRMET TANGO 4W: moderate turbulence below 18,000 ft up to 18,000 ft. Near the route, at the destination end.

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 MRY.

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

B738 at 33,000 ft, 32 nm southeast, 4:57 pm PDT (23:57 UTC): moderate chop turbulence from 31,000 ft to 33,000 ft. 653 nm along the route, 32 nm southeast of the line.
as filed, and in English
```
IDA UA /OV DBS015030/TM 2357/FL330/TP B738/TB MOD CHOP 310-330 /ZLC
```
Report
a routine report filed through IDA
Where
30 nm north (015°) of DBS
Time
23:57 UTC
Height
at 33,000 ft
Aircraft
B738
Turbulence
moderate chop from 31,000 ft to 33,000 ft zlc
C680 descending, 0 nm north, 5:46 pm PDT (00:46 UTC): a broken layer from 3,000 ft to 3,500 ft. At the departure end, 0 nm north of the line.
as filed, and in English
```
MRY UA /OV MRY/TM 0046/FLDURD/TP C680/SK BKN030-TOP035
```
Report
a routine report filed through MRY
Where
over MRY
Time
00:46 UTC
Height
during the descent
Aircraft
C680
Sky
a broken layer from 3,000 ft, tops 3,500 ft
B38M descending, 26 nm northwest, 6:28 pm PDT (01:28 UTC): light chop turbulence, remarks: during the descent RY35L rno. 188 nm along the route, 26 nm northwest of the line.
as filed, and in English
```
RNO UA /OV KRNO167009/TM 0128/FLUNKN/TP B38M/TB OCNL LGT CHOP/RM DURD RY35L RNO
```
Report
a routine report filed through RNO
Where
9 nm south (167°) of KRNO
Time
01:28 UTC
Height
height not given
Aircraft
B38M
Turbulence
occasional light chop
Remarks
during the descent RY35L rno
PC12 at 6,000 ft, 4 nm west, 6:09 pm PDT (01:09 UTC): scattered clouds up to 6,000 ft, remarks: multiple scattered layers during the descent RY31. 544 nm along the route, 4 nm west of the line.
as filed, and in English
```
SUN UA /OV KSUN/TM 0109/FL060/TP PC12/SK SCT-TOP060/WX FV05SM/RM MULTIPLE SCT LAYERS DURD RY31
```
Report
a routine report filed through SUN
Where
over KSUN
Time
01:09 UTC
Height
at 6,000 ft
Aircraft
PC12
Sky
scattered clouds, tops 6,000 ft
Weather
flight visibility 5 miles
Remarks
multiple scattered layers during the descent RY31
E550 at 21,000 ft, 4 nm west, 4:27 pm PDT (23:27 UTC): light turbulence, a few clouds above 7,000 ft, remarks: during the climb zlc. 544 nm along the route, 4 nm west of the line.
as filed, and in English
```
SUN UA /OV SUN/TM 2327/FL210/TP E550/SK FEW070/TB CONS LGT/RM DURC /ZLC
```
Report
a routine report filed through SUN
Where
over SUN
Time
23:27 UTC
Height
at 21,000 ft
Aircraft
E550
Sky
a few clouds from 7,000 ft
Turbulence
continuous light
Remarks
during the climb zlc
B738 at 24,000 ft, 27 nm northwest, 4:13 pm PDT (23:13 UTC): remarks: snow top flight level at 24,000 ft zlc. At the destination end, 27 nm northwest of the line.
as filed, and in English
```
BZN UA /OV BZN270030/TM 2313/FL240/TP B738/RM SN TOP FL 240 /ZLC
```
Report
a routine report filed through BZN
Where
30 nm west (270°) of BZN
Time
23:13 UTC
Height
at 24,000 ft
Aircraft
B738
Remarks
snow top flight level at 24,000 ft zlc
E75L descending, 0 nm northwest, 6:04 pm PDT (01:04 UTC): remarks: had the airport in sight at 400-500FT above ground. At the destination end, 0 nm northwest 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, 0 nm northwest, 5:28 pm PDT (00:28 UTC): scattered clouds above 8,000 ft, fog, snow, remarks: broke out about 100FT above mins. At the destination end, 0 nm northwest 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

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 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 7 forecast points nearest it (SFO, SAC, RNO, BAM, BOI, PIH, DLN). 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	310° at 6 kt	0	4 °C	120 kt	6 h 06 min	1:48 am MDT (07:48 UTC)
7,500 ft	290° at 3 kt	−1 kt	1 °C	121 kt	6 h 03 min	1:45 am MDT (07:45 UTC)
9,500 ft	250° at 6 kt	−5 kt	0 °C	125 kt	5 h 51 min	1:33 am MDT (07:33 UTC)
11,500 ft	230° at 15 kt	−14 kt	-4 °C	134 kt	5 h 28 min	1:10 am MDT (07:10 UTC)
13,500 ft	220° at 21 kt	−21 kt	-8 °C	141 kt	5 h 11 min	12:53 am MDT (06:53 UTC)
15,500 ft	220° at 26 kt	−26 kt	-11 °C	146 kt	5 h 01 min	12:43 am MDT (06:43 UTC)
17,500 ft	220° at 32 kt	−32 kt	-15 °C	152 kt	4 h 49 min	12:31 am MDT (06:31 UTC)
18,000 ft FL180	220° at 33 kt	−33 kt	-16 °C	153 kt	4 h 47 min	12:29 am MDT (06:29 UTC)
24,000 ft FL240	210° at 43 kt	−42 kt	-25 °C	162 kt	4 h 31 min	12:13 am MDT (06:13 UTC)
30,000 ft FL300	220° at 59 kt	−58 kt	-31 °C	178 kt	4 h 07 min	11:49 pm MDT (05:49 UTC)
34,000 ft FL340	220° at 65 kt	−65 kt	-35 °C	185 kt	3 h 57 min	11:39 pm MDT (05:39 UTC)
39,000 ft FL390	230° at 60 kt	−60 kt	-43 °C	180 kt	4 h 04 min	11:46 pm MDT (05:46 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
SFO	used from 0 nm out; 59 nm from the line	220/11	L/V 5°	280/7 1°	270/15 -3°	290/23 -14°	310/29 -24°	280/26 -28°	250/30 -34°	250/36 -43°
SAC	used from 49 nm out; 64 nm from the line	270/5	L/V 5°	L/V -1°	240/11 -5°	250/22 -15°	270/25 -24°	260/31 -27°	240/39 -33°	240/39 -42°
RNO	used from 148 nm out; 40 nm from the line		320/7	260/13 1°	230/21 -7°	210/38 -17°	220/43 -26°	230/54 -29°	230/59 -32°	230/54 -41°
BAM	used from 247 nm out; 68 nm from the line			270/8 4°	230/27 -4°	220/49 -18°	210/52 -26°	220/77 -29°	220/71 -33°	220/63 -43°
BOI	used from 445 nm out; 70 nm from the line		330/14 4°	230/5 -2°	220/20 -7°	210/37 -20°	200/59 -26°	200/67 -34°	210/73 -35°	220/62 -41°
PIH	used from 544 nm out; 76 nm from the line		270/10	270/13 1°	210/16 -2°	200/56 -11°	200/51 -23°	200/68 -33°	220/77 -37°	230/73 -44°
DLN	used from 594 nm out; 54 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°

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
MRY Monterey, CA	departure	marginal VFR Sky: a broken layer at 3,000 feet	from the southwest (220°) at 11 knots	10+ mi	3,000 ft	256 ft	5:54 pm PDT (00:54 UTC)
CVH Hollister, CA	30 nm out, 6 nm southeast of the line	VFR Sky: a few clouds at 2,800 feet, scattered clouds at 3,400 feet	from the west-southwest (240°) at 13 knots	10+ mi	none	230 ft	01:35 UTC
MOD Modesto, CA	79 nm out, 6 nm west of the line, tower	VFR	calm	10+ mi	none	99 ft	00:53 UTC
SPZ Silver Springs, NV	208 nm out, 10 nm northwest of the line	no report just now				4,265 ft
FLX Fallon, NV	228 nm out, 5 nm southeast of the line	no report just now				3,966 ft
WMC Winnemucca, NV	317 nm out, 16 nm northwest of the line	VFR Sky: a few clouds at 7,000 feet, scattered clouds at 8,500 feet, overcast at 11,000 feet	from the north-northwest (330°) at 14 knots, gusting to 21	10+ mi	11,000 ft	4,307 ft	00:56 UTC
GNG Gooding, ID	505 nm out, 7 nm south of the line	VFR Sky: a broken layer at 5,000 feet, overcast at 11,000 feet	from the east (100°) at 5 knots	10+ mi	5,000 ft	3,732 ft	01:25 UTC
SUN Hailey, ID	544 nm out, 4 nm west of the line, tower	marginal VFR Sky: scattered clouds at 300 feet, overcast at 1,500 feet Weather: light rain	calm	5 mi	1,500 ft	5,319 ft	01:24 UTC
EKS Ennis, MT	693 nm out, 7 nm east of the line	IFR Sky: overcast at 500 feet Weather: light snow, mist	from the north (350°) at 15 knots, gusting to 22	1.5 mi	500 ft	5,432 ft	01:30 UTC
BZN Bozeman, MT	destination	low IFR Sky: overcast at 300 feet Weather: light snow, mist	calm	1.5 mi	300 ft	4,473 ft	7:25 pm MDT (01:25 UTC)

The highest airport on this list sits at 5,432 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.

At BZN when you get there the forecast at the estimated arrival, 11:39 pm MDT (05:39 UTC)

Wind light and variable, visibility ½ mile, snow, fog, overcast at 300 feet low IFR

At times between Sun 9:00 pm MDT (03:00 UTC) and 12:00 am MDT (06:00 UTC): visibility 2 miles, light snow, mist, scattered clouds at 300 feet, overcast at 1,200 feet IFR

The whole forecast for BZN

From Sun 6:00 pm MDT (00:00 UTC): wind light and variable, visibility ½ mile, snow, fog, overcast at 300 feet
At times between Sun 9:00 pm MDT (03:00 UTC) and 12:00 am MDT (06:00 UTC): visibility 2 miles, light snow, mist, scattered clouds at 300 feet, overcast at 1,200 feet
From Mon 12:00 am MDT (06:00 UTC): wind from the west at 7 knots, visibility 2 miles, light snow, mist, overcast at 800 feet
At times between Mon 12:00 am MDT (06:00 UTC) and 3:00 am MDT (09:00 UTC): visibility 6 miles, light snow, mist, overcast at 800 feet
From Mon 3:00 am MDT (09:00 UTC): wind light and variable, visibility more than 6 miles, overcast at 800 feet
From Mon 12:00 pm MDT (18:00 UTC): wind light and variable, visibility more than 6 miles, scattered clouds at 800 feet, overcast at 2,000 feet
From Mon 5:00 pm MDT (23:00 UTC): wind light and variable, visibility more than 6 miles, scattered clouds at 1,500 feet, a broken layer at 11,000 feet

The forecast for MRY, the departure

From Sun 5:00 pm PDT (00:00 UTC): wind from the west-southwest at 10 knots, visibility more than 6 miles, a few clouds at 3,000 feet
From Sun 10:00 pm PDT (05:00 UTC): wind from the east-southeast at 3 knots, visibility more than 6 miles, scattered clouds at 3,000 feet
From Mon 12:00 pm PDT (19:00 UTC): wind from the west-northwest at 8 knots, visibility more than 6 miles, clear skies

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 MRY 6:35 pm PDT (01:35 UTC), at BZN 6:44 pm MDT (00:44 UTC) (civil twilight ends 7:14 pm MDT (01:14 UTC)). At 120 knots the arrival at BZN is before sunrise there (7:36 am MDT (13:36 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 Pacific Northwest · loop National Weather Service

Radar now, the northern Rockies · 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: Monterey Regional, Bozeman Yellowstone International.