Plan a flight · Sun 11:21 pm MDT (05:21 UTC)

Boise Air Trml/Gowen Field to Long Beach (Daugherty Field) BOI → LGB

592 nautical miles (681 statute miles) south on a straight line, true course 189°, about 176° magnetic at the departure end (variation 13E). At 120 knots that is 5 h 09 min at the quickest height in today's winds (7,500 ft, a 5-knot headwind), arriving about 3:30 am PDT (10:30 UTC), after sunset at the destination. Right now BOI is VFR, wind from the south (190°) at 4 knots; LGB is VFR, wind from the southwest (230°) at 4 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: 41 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 W14W: thunderstorms (a convective SIGMET) up to 28,000 ft, moving from the southwest at 20 knots, until 12:55 am MDT (06:55 UTC). Over the route from 207 to 345 nm out.
as issued
```
WSUS33 KKCI 120455
MKCW WST 120455
CONVECTIVE SIGMET 14W
VALID UNTIL 0655Z
NV
FROM 40NW BVL-20WNW ELY-20SSE OAL-40WNW OAL-50NE BAM-40NW BVL
AREA TS MOV FROM 24020KT. TOPS TO FL280.
```
AIRMET TANGO 1W: moderate turbulence above 18,000 ft from 18,000 ft to 36,000 ft. Over the first 118 nm of the route.
AIRMET ZULU 2C: moderate icing up to 23,000 ft. Over the route from 148 to 286 nm out.
AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 237 to 316 nm out.
AIRMET TANGO 1W: moderate turbulence below 18,000 ft (due to mountain wave) up to 15,000 ft. Over the route from 405 to 582 nm out.
AIRMET TANGO 3W: strong surface winds (30 knots or more) (due to sustained surface winds greater than 30 knots). Near the route, 434 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 BOI.

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

PC12 at 17,000 ft, 18 nm northwest, 10:52 pm MDT (04:52 UTC): moderate turbulence, moderate rime icing, -15 °C, remarks: entered by zoa fdcs. 345 nm along the route, 18 nm northwest 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
B737 at 13,000 ft, 21 nm south, 9:30 pm MDT (03:30 UTC): moderate turbulence. At the destination end, 21 nm south of the line.
as filed, and in English
```
SLI UA /OV SLI180020/TM 0330/FL130/TP B737/TB MOD
```
Report
a routine report filed through SLI
Where
20 nm south (180°) of SLI
Time
03:30 UTC
Height
at 13,000 ft
Aircraft
B737
Turbulence
moderate
A321 at 3,300 ft, 33 nm east, 10:59 pm MDT (04:59 UTC): a broken layer above 3,300 ft, remarks: during the descent. At the destination end, 33 nm east of the line.
as filed, and in English
```
ONT UA /OV ONT078008/TM 0459/FL033/TP A321/SK BKN033-TOPUNKN/RM DURD
```
Report
a routine report filed through ONT
Where
8 nm east (078°) of ONT
Time
04:59 UTC
Height
at 3,300 ft
Aircraft
A321
Sky
a broken layer from 3,300 ft, tops unknown
Remarks
during the descent
GLF5 at 3,500 ft, 20 nm west, 10:54 pm MDT (04:54 UTC): overcast above 3,600 ft. At the destination end, 20 nm west of the line.
as filed, and in English
```
VNY UA /OV VNY36006/TM 0454/FL035/TP GLF5/SK OVC036
```
Report
a routine report filed through VNY
Where
VNY36006
Time
04:54 UTC
Height
at 3,500 ft
Aircraft
GLF5
Sky
overcast from 3,600 ft
B38M at 4,500 ft, 37 nm east, 10:15 pm MDT (04:15 UTC): a broken layer above 4,500 ft, remarks: during the descent. At the destination end, 37 nm east of the line.
as filed, and in English
```
ONT UA /OV ONT078012/TM 0415/FL045/TP B38M/SK BKN045-TOPUNKN/RM DURD
```
Report
a routine report filed through ONT
Where
12 nm east (078°) of ONT
Time
04:15 UTC
Height
at 4,500 ft
Aircraft
B38M
Sky
a broken layer from 4,500 ft, tops unknown
Remarks
during the descent
A20N climbing, 24 nm east, 9:03 pm MDT (03:03 UTC): a routine report with nothing remarked on. At the destination end, 24 nm east of the line.
as filed, and in English
```
ONT UA /OV ONT204003/TM 0303/FLDURC/TP A20N/SK B-030
```
Report
a routine report filed through ONT
Where
3 nm southwest (204°) of ONT
Time
03:03 UTC
Height
during the climb
Aircraft
A20N
Sky
B-030
B737 climbing, 10 nm east, 9:01 pm MDT (03:01 UTC): a routine report with nothing remarked on. At the destination end, 10 nm east of the line.
as filed, and in English
```
ONT UA /OV ONT278016/TM 0301/FLDURC/TP B737/SK B-047 -T080
```
Report
a routine report filed through ONT
Where
16 nm west (278°) of ONT
Time
03:01 UTC
Height
during the climb
Aircraft
B737
Sky
B-047 T080
A20N climbing, 28 nm east, 9:04 pm MDT (03:04 UTC): a routine report with nothing remarked on. At the destination end, 28 nm east of the line.
as filed, and in English
```
ONT UA /OV ONT153007/TM 0304/FLDURC/TP A20N/SK B-036 -T047
```
Report
a routine report filed through ONT
Where
7 nm southeast (153°) of ONT
Time
03:04 UTC
Height
during the climb
Aircraft
A20N
Sky
B-036 T047
E75L at 3,600 ft, 6 nm northwest, 9:30 pm MDT (03:30 UTC): overcast above 6,600 ft, remarks: bases 3,600 ft. At the destination end, 6 nm northwest of the line.
as filed, and in English
```
KLAX UA /OV 10 E LAX/TM 0330/FL036/TP E75L/SK OVC066/RM BASES 036
```
Report
a routine report filed through KLAX
Where
10 east lax
Time
03:30 UTC
Height
at 3,600 ft
Aircraft
E75L
Sky
overcast from 6,600 ft
Remarks
bases 3,600 ft
B737 at 3,500 ft, 0 nm south, 9:25 pm MDT (03:25 UTC): a broken layer above 3,500 ft. At the destination end, 0 nm south of the line.
as filed, and in English
```
LGB UA /OV LGB/TM 0325/FL035/TP B737/SK BKN035
```
Report
a routine report filed through LGB
Where
over LGB
Time
03:25 UTC
Height
at 3,500 ft
Aircraft
B737
Sky
a broken layer from 3,500 ft

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 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 5 forecast points nearest it (BOI, BAM, BIH, WJF, ONT). 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	210° at 9 kt	+8 kt	4 °C	112 kt	5 h 17 min	3:38 am PDT (10:38 UTC)
7,500 ft	230° at 7 kt	+5 kt	1 °C	115 kt	5 h 09 min	3:30 am PDT (10:30 UTC)
9,500 ft	230° at 10 kt	+7 kt	-1 °C	113 kt	5 h 14 min	3:35 am PDT (10:35 UTC)
11,500 ft	230° at 15 kt	+12 kt	-4 °C	108 kt	5 h 29 min	3:50 am PDT (10:50 UTC)
13,500 ft	220° at 22 kt	+19 kt	-8 °C	101 kt	5 h 52 min	4:13 am PDT (11:13 UTC)
15,500 ft	210° at 29 kt	+27 kt	-12 °C	93 kt	6 h 22 min	4:43 am PDT (11:43 UTC)
17,500 ft	210° at 36 kt	+34 kt	-15 °C	86 kt	6 h 53 min	5:14 am PDT (12:14 UTC)
18,000 ft FL180	200° at 38 kt	+36 kt	-16 °C	84 kt	7 h 03 min	5:24 am PDT (12:24 UTC)
24,000 ft FL240	200° at 50 kt	+48 kt	-26 °C	72 kt	8 h 13 min	6:34 am PDT (13:34 UTC)
30,000 ft FL300	220° at 59 kt	+51 kt	-29 °C	69 kt	8 h 35 min	6:56 am PDT (13:56 UTC)
34,000 ft FL340	220° at 56 kt	+48 kt	-34 °C	72 kt	8 h 13 min	6:34 am PDT (13:34 UTC)
39,000 ft FL390	220° at 50 kt	+41 kt	-42 °C	79 kt	7 h 30 min	5:51 am PDT (12:51 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
BOI	used from 0 nm out; 25 nm from the line		300/7 2°	280/5 -4°	210/16 -9°	210/60 -20°	210/75 -29°	210/63 -32°	220/64 -32°	220/54 -39°
BAM	used from 99 nm out; 57 nm from the line			310/7 0°	270/19 -7°	200/38 -17°	190/49 -28°	220/69 -29°	220/63 -33°	230/48 -41°
BIH	used from 296 nm out; 74 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°
WJF	used from 444 nm out; 70 nm from the line		200/28 6°	210/28 3°	210/29 -4°	210/28 -14°	220/41 -20°	220/47 -29°	220/46 -37°	220/53 -44°
ONT	used from 543 nm out; 26 nm from the line	190/8	190/19 6°	210/23 4°	210/29 -3°	210/47 -13°	210/49 -19°	220/47 -30°	220/50 -36°	220/55 -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
BOI Boise, ID	departure	VFR Sky: overcast at 8,000 feet	from the south (190°) at 4 knots	10+ mi	8,000 ft	2,871 ft	10:53 pm MDT (04:53 UTC)
BAM Battle Mountain, NV	178 nm out, 3 nm south of the line	VFR Sky: a broken layer at 7,000 feet, overcast at 8,500 feet	from the northwest (320°) at 7 knots	10+ mi	7,000 ft	4,536 ft	05:15 UTC
TMT Austin, NV	247 nm out, 5 nm southwest of the line	VFR Sky: overcast at 6,000 feet	from the east-northeast (060°) at 7 knots	10+ mi	6,000 ft	5,735 ft	04:55 UTC
TPH Tonopah, NV	336 nm out, 14 nm east of the line	marginal VFR Sky: a broken layer at 2,400 feet, overcast at 6,500 feet	from the southeast (140°) at 6 knots	10+ mi	2,400 ft	5,430 ft	05:04 UTC
MHV Mojave, CA	523 nm out, 12 nm northwest of the line, tower	VFR	from the south-southwest (210°) at 16 knots, gusting to 21	10+ mi	none	2,801 ft	03:15 UTC
PMD Palmdale, CA	543 nm out, 4 nm west of the line, tower	VFR	from the west-southwest (240°) at 15 knots	10+ mi	none	2,542 ft	04:53 UTC
LGB Long Beach, CA	destination	VFR Sky: a broken layer at 3,800 feet, a broken layer at 4,500 feet, overcast at 6,500 feet	from the southwest (230°) at 4 knots	10+ mi	3,800 ft	60 ft	9:53 pm PDT (04:53 UTC)

The highest airport on this list sits at 5,735 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.

At LGB when you get there the forecast at the estimated arrival, 3:30 am PDT (10:30 UTC)

Wind light and variable, visibility more than 6 miles, a broken layer at 5,000 feet, overcast at 10,000 feet VFR

30% chance between Sun 11:00 pm PDT (06:00 UTC) and 5:00 am PDT (12:00 UTC): light rain showers

The whole forecast for LGB

From Sun 6:00 pm PDT (01:00 UTC): wind from the southwest at 5 knots, visibility more than 6 miles, scattered clouds at 6,000 feet, a broken layer at 12,000 feet
30% chance between Sun 6:00 pm PDT (01:00 UTC) and 11:00 pm PDT (06:00 UTC): light rain showers
From Sun 11:00 pm PDT (06:00 UTC): wind light and variable, visibility more than 6 miles, a broken layer at 5,000 feet, overcast at 10,000 feet
30% chance between Sun 11:00 pm PDT (06:00 UTC) and 5:00 am PDT (12:00 UTC): light rain showers
From Mon 5:00 am PDT (12:00 UTC): wind light and variable, visibility more than 6 miles, a broken layer at 5,000 feet, overcast at 10,000 feet
30% chance between Mon 5:00 am PDT (12:00 UTC) and 10:00 am PDT (17:00 UTC): light rain showers
From Mon 10:00 am PDT (17:00 UTC): wind from the west-northwest at 8 knots, visibility more than 6 miles, a broken layer at 5,000 feet, overcast at 10,000 feet
From Mon 12:00 pm PDT (19:00 UTC): wind from the southwest at 10 knots, visibility more than 6 miles, a broken layer at 5,000 feet, overcast at 10,000 feet

The forecast for BOI, the departure

From Sun 7:00 pm MDT (01:00 UTC): wind from the northwest at 11 knots, visibility more than 6 miles, showers nearby, scattered clouds at 5,000 feet, overcast at 7,000 feet
At times between Sun 7:00 pm MDT (01:00 UTC) and 10:00 pm MDT (04:00 UTC): wind variable at 10 knots, light rain showers, overcast at 5,000 feet
From Mon 12:00 am MDT (06:00 UTC): wind from the west-northwest at 5 knots, visibility more than 6 miles, a few clouds at 5,000 feet, a broken layer at 8,000 feet
From Mon 12:00 pm MDT (18:00 UTC): wind from the northwest at 10 knots, visibility more than 6 miles, a broken layer at 10,000 feet

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

6/8783 38NM NE BAKERSFIELD, CA, Saturday, October 10, 2026 through Friday, October 23, 2026 UTC 23 nm from the route, 484 nm along the route · a hazard on the ground (fire-fighting, a chemical spill, rescue work) · until 23 October · ZLA
4/3635 DISNEYLAND THEME PARK, ANAHEIM,, CA 9 nm from the route, at the destination end · security · ZLA

Daylight

Sunset at BOI 7:06 pm MDT (01:06 UTC), at LGB 6:22 pm PDT (01:22 UTC) (civil twilight ends 6:47 pm PDT (01:47 UTC)). At 120 knots the arrival at LGB is before sunrise there (6:55 am PDT (13:55 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 Northwest · 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: Boise Air Trml/Gowen Field, Long Beach (Daugherty Field).