Plan a flight · Sun 7:16 pm PDT (02:16 UTC)

Mammoth Yosemite Airport to Jack Northrop Fld/Hawthorne Municipal MMH → HHR

224 nautical miles (257 statute miles) south on a straight line, true course 174°, about 159° magnetic at the departure end (variation 15E). At 120 knots that is 2 h 06 min at the quickest height in today's winds (7,500 ft, a 13-knot headwind), arriving about 9:22 pm PDT (04:22 UTC), after sunset at the destination. Right now MMH is VFR, wind from the southeast (140°) at 19 knots, gusting to 30; HHR is VFR, wind from the west (260°) at 6 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: 219 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 3W: moderate turbulence below 18,000 ft (due to mountain wave) up to 15,000 ft. Over the first 68 nm of the route.
AIRMET TANGO 1W: moderate turbulence below 18,000 ft (due to mountain wave) up to 12,000 ft. Over the route from 156 to 204 nm out.
AIRMET SIERRA 6E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the last 58 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 MMH.

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

E75L at 18,000 ft, 14 nm east, 4:24 pm PDT (23:24 UTC): moderate turbulence from 18,000 ft to 22,000 ft, remarks: mountain wave a 10-knot loss of airspeed entered by zoa fdcs. 10 nm along the route, 14 nm east of the line.
as filed, and in English
```
LOL UA /OV BIH300011/TM 2324/FL 180/TP E75L/TB MOD 180-220/RM MTN WAVE /-10 ENTERED BY ZOA FDCS AWC-WEB
```
Report
a routine report filed through LOL
Where
11 nm northwest (300°) of BIH
Time
23:24 UTC
Height
at 18,000 ft
Aircraft
E75L
Turbulence
moderate from 18,000 ft to 22,000 ft
Remarks
mountain wave a 10-knot loss of airspeed entered by zoa fdcs
BCS3 at 19,000 ft, 49 nm west, 6:53 pm PDT (01:53 UTC): light to moderate rime icing, -13 °C, remarks: zlawc. 78 nm along the route, 49 nm west of the line.
as filed, and in English
```
TPH UA /OV UTI250300/TM 0153/FL190/TP BCS3/TA M13/IC LGT-MOD RIME/RM ZLAWC AWC-WEB
```
Report
a routine report filed through TPH
Where
300 nm west (250°) of UTI
Time
01:53 UTC
Height
at 19,000 ft
Aircraft
BCS3
Temperature
−13 °C
Icing
light to moderate rime
Remarks
zlawc
B739 at 4,000 ft, 3 nm south, 5:32 pm PDT (00:32 UTC): overcast above 4,000 ft. 204 nm along the route, 3 nm south of the line.
as filed, and in English
```
BUR UA /OV BUR/TM 0032/FL040/TP B739/SK OVC040
```
Report
a routine report filed through BUR
Where
over BUR
Time
00:32 UTC
Height
at 4,000 ft
Aircraft
B739
Sky
overcast from 4,000 ft
SLG4 at 3,000 ft, 22 nm east, 6:33 pm PDT (01:33 UTC): scattered clouds above 4,000 ft. 214 nm along the route, 22 nm east of the line.
as filed, and in English
```
EMT UA /OV EMT070006/TM 0133/FL030/TP SLG4/SK SCT040
```
Report
a routine report filed through EMT
Where
6 nm east (070°) of EMT
Time
01:33 UTC
Height
at 3,000 ft
Aircraft
SLG4
Sky
scattered clouds from 4,000 ft
B737 at 6,400 ft, 11 nm southeast, 6:30 pm PDT (01:30 UTC): a broken layer from 3,300 ft to 6,400 ft. At the destination end, 11 nm southeast of the line.
as filed, and in English
```
LGB UA /OV LGB/TM 0130/FL064/TP B737/SK BKN033-TOP064
```
Report
a routine report filed through LGB
Where
over LGB
Time
01:30 UTC
Height
at 6,400 ft
Aircraft
B737
Sky
a broken layer from 3,300 ft, tops 6,400 ft
A21N at 2,000 ft, 25 nm east, 6:06 pm PDT (01:06 UTC): remarks: ils 25L haze below the ceiling. At the destination end, 25 nm east of the line.
as filed, and in English
```
LAX UA /OV LAX070030/TM 0106/FL020/TP A21N/SK TOPS068 BASES040/RM ILS 25L - HZ BELOW THE CEILING
```
Report
a routine report filed through LAX
Where
30 nm east (070°) of LAX
Time
01:06 UTC
Height
at 2,000 ft
Aircraft
A21N
Sky
TOPS068 BASES040
Remarks
ils 25L haze below the ceiling
A20N at 5,300 ft, 28 nm southeast, 6:00 pm PDT (01:00 UTC): a broken layer from 4,300 ft to 5,300 ft. At the destination end, 28 nm southeast of the line.
as filed, and in English
```
SNA UA /OV SNA/TM 0100/FL053/TP A20N/SK BKN043-TOP053
```
Report
a routine report filed through SNA
Where
over SNA
Time
01:00 UTC
Height
at 5,300 ft
Aircraft
A20N
Sky
a broken layer from 4,300 ft, tops 5,300 ft
A21B at 4,000 ft, 5 nm west, 5:11 pm PDT (00:11 UTC): a broken layer above 4,000 ft, remarks: during the descent runway 25L. At the destination end, 5 nm west of the line.
as filed, and in English
```
LAX UA /OV LAX/TM 0011/FL040/TP A21B/SK BKN-BASE040/RM DURD RY25L
```
Report
a routine report filed through LAX
Where
over LAX
Time
00:11 UTC
Height
at 4,000 ft
Aircraft
A21B
Sky
BKN-BASE040
Remarks
during the descent runway 25L
E75S at 5,000 ft, 12 nm southeast, 5:00 pm PDT (00:00 UTC): a routine report with nothing remarked on. At the destination end, 12 nm southeast of the line.
as filed, and in English
```
LGB UA /OV LGB180003/TM 0000/FL050/TP E75S/SK OVC43-TOP050
```
Report
a routine report filed through LGB
Where
3 nm south (180°) of LGB
Time
00:00 UTC
Height
at 5,000 ft
Aircraft
E75S
Sky
OVC43-TOP050
B739 at 3,400 ft, 5 nm east, 4:55 pm PDT (23:55 UTC): overcast above 5,400 ft, remarks: bases 3,500 ft. At the destination end, 5 nm east of the line.
as filed, and in English
```
KLAX UA /OV 10 E LAX/TM 2355/FL034/TP B739/SK OVC054/RM BASES 035
```
Report
a routine report filed through KLAX
Where
10 east lax
Time
23:55 UTC
Height
at 3,400 ft
Aircraft
B739
Sky
overcast from 5,400 ft
Remarks
bases 3,500 ft

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 3 forecast points nearest it (BIH, FAT, WJF). 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	220° at 18 kt	+14 kt	8 °C	106 kt	2 h 07 min	9:23 pm PDT (04:23 UTC)
7,500 ft	220° at 20 kt	+13 kt	6 °C	107 kt	2 h 06 min	9:22 pm PDT (04:22 UTC)
9,500 ft	230° at 23 kt	+14 kt	4 °C	106 kt	2 h 07 min	9:23 pm PDT (04:23 UTC)
11,500 ft	220° at 28 kt	+18 kt	-1 °C	102 kt	2 h 12 min	9:28 pm PDT (04:28 UTC)
13,500 ft	220° at 29 kt	+19 kt	-5 °C	101 kt	2 h 13 min	9:29 pm PDT (04:29 UTC)
15,500 ft	220° at 30 kt	+19 kt	-8 °C	101 kt	2 h 13 min	9:29 pm PDT (04:29 UTC)
17,500 ft	230° at 30 kt	+19 kt	-12 °C	101 kt	2 h 13 min	9:29 pm PDT (04:29 UTC)
18,000 ft FL180	230° at 30 kt	+19 kt	-13 °C	101 kt	2 h 13 min	9:29 pm PDT (04:29 UTC)
24,000 ft FL240	220° at 42 kt	+28 kt	-22 °C	92 kt	2 h 26 min	9:42 pm PDT (04:42 UTC)
30,000 ft FL300	220° at 53 kt	+36 kt	-28 °C	84 kt	2 h 40 min	9:56 pm PDT (04:56 UTC)
34,000 ft FL340	220° at 48 kt	+35 kt	-34 °C	85 kt	2 h 38 min	9:54 pm PDT (04:54 UTC)
39,000 ft FL390	220° at 49 kt	+31 kt	-44 °C	89 kt	2 h 31 min	9:47 pm PDT (04:47 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
BIH	used from 0 nm out; 22 nm from the line		L/V	210/14 6°	210/20 -2°	230/26 -14°	220/32 -24°	220/63 -27°	220/56 -35°	230/50 -44°
FAT	used from 49 nm out; 55 nm from the line	180/7	170/9 7°	200/20 3°	210/27 -3°	240/27 -14°	230/38 -24°	220/57 -27°	230/42 -33°	230/41 -44°
WJF	used from 97 nm out; 55 nm from the line		220/30 8°	240/28 5°	230/34 -2°	220/34 -13°	220/48 -20°	220/47 -29°	210/48 -34°	220/52 -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
MMH Mammoth Lakes, CA	departure	VFR Sky: scattered clouds at 9,000 feet	from the southeast (140°) at 19 knots, gusting to 30	10+ mi	none	7,134 ft	4:35 pm PDT (23:35 UTC)
BIH Bishop, CA	19 nm out, 21 nm east of the line	VFR	variable at 3 knots	10+ mi	none	4,124 ft	01:56 UTC
PTV Porterville, CA	97 nm out, 22 nm west of the line	VFR	from the west (270°) at 12 knots	10+ mi	none	443 ft	01:56 UTC
WJF Lancaster, CA	175 nm out, 11 nm east of the line, tower	VFR Sky: a few clouds at 3,500 feet	from the west-southwest (250°) at 13 knots	10+ mi	none	2,350 ft	01:56 UTC
WHP Los Angeles, CA	204 nm out, 2 nm northwest of the line, tower	VFR Sky: a broken layer at 4,000 feet, overcast at 5,000 feet	from the south-southeast (160°) at 6 knots, gusting to 11	10+ mi	4,000 ft	1,003 ft	02:00 UTC
HHR Hawthorne, CA	destination	VFR Sky: a few clouds at 4,500 feet, overcast at 5,500 feet	from the west (260°) at 6 knots	10+ mi	5,500 ft	65 ft	6:53 pm PDT (01:53 UTC)

The highest airport on this list sits at 7,134 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.

At HHR when you get there the forecast at the estimated arrival, 9:22 pm PDT (04:22 UTC)

HHR has no terminal forecast; use the nearest airport that does.

The forecast for MMH, the departure

From Sun 5:00 pm PDT (00:00 UTC): wind from the west-northwest at 14 knots, gusting to 24, visibility more than 6 miles, scattered clouds at 6,000 feet
From Sun 8:00 pm PDT (03:00 UTC): wind light and variable, visibility more than 6 miles, a few clouds at 6,000 feet
From Mon 3:00 am PDT (10:00 UTC): wind light and variable, visibility more than 6 miles, scattered clouds at 3,000 feet
From Mon 1:00 pm PDT (20:00 UTC): wind from the east-southeast at 7 knots, visibility 6 miles, light rain showers, a broken layer at 4,000 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 7 nm from the route, 117 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 19 nm from the route, at the destination end · security · ZLA

Daylight

Sunset at MMH 6:22 pm PDT (01:22 UTC), at HHR 6:23 pm PDT (01:23 UTC) (civil twilight ends 6:48 pm PDT (01:48 UTC)). At 120 knots the arrival at HHR is after sunset there (6:24 pm PDT (01:24 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, 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: Mammoth Yosemite Airport, Jack Northrop Fld/Hawthorne Municipal.