Plan a flight · Sun 4:30 pm PDT (23:30 UTC)

Napa County to Jack Northrop Fld/Hawthorne Municipal APC → HHR

321 nautical miles (369 statute miles) southeast on a straight line, true course 142°, about 127° magnetic at the departure end (variation 15E). At 120 knots that is 2 h 34 min at the quickest height in today's winds (18,000 ft, a 5-knot tailwind), arriving about 7:04 pm PDT (02:04 UTC), after sunset at the destination. Right now APC is VFR, wind from the south (190°) at 18 knots, gusting to 24; HHR is VFR, wind from the west-southwest (240°) at 7 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: 3 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: moderate turbulence below 18,000 ft (due to mountain wave) up to 12,000 ft. Near the route, 301 nm along the route.
AIRMET SIERRA 6E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the last 10 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 APC.

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

B737 at 14,000 ft, 49 nm northeast, 2:54 pm PDT (21:54 UTC): moderate turbulence. At the destination end, 49 nm northeast of the line.
as filed, and in English
```
ONT UA /OV 20N ONT/TM 2154/FL140/TP B737/TB MOD
```
Report
a routine report filed through ONT
Where
20N ont
Time
21:54 UTC
Height
at 14,000 ft
Aircraft
B737
Turbulence
moderate
B738 descending, 49 nm northeast, 2:37 pm PDT (21:37 UTC): moderate chop turbulence. At the destination end, 49 nm northeast of the line.
as filed, and in English
```
ONT UA /OV ONT358021/TM 2137/FLDURD/TP B738/TB MODERATE CHOP STARTING AT 130
```
Report
a routine report filed through ONT
Where
21 nm north (358°) of ONT
Time
21:37 UTC
Height
during the descent
Aircraft
B738
Turbulence
moderate chop starting at at 13,000 ft
E50P descending, 43 nm southwest, 3:03 pm PDT (22:03 UTC): remarks: low-level wind shear + 10 knots short final. 88 nm along the route, 43 nm southwest of the line.
as filed, and in English
```
MRY UA /OV KMRY/TM 2203/FLDURD/TP E50P/RM LLWS +/- 10KTS SHORT FINAL
```
Report
a routine report filed through MRY
Where
over KMRY
Time
22:03 UTC
Height
during the descent
Aircraft
E50P
Remarks
low-level wind shear + 10 knots short final
C172 at 5,000 ft, 25 nm southwest, 4:15 pm PDT (23:15 UTC): remarks: tops 5,000 ft on departure runway 25. 282 nm along the route, 25 nm southwest of the line.
as filed, and in English
```
OXR UA /OV KOXR/TM 2315/FL050/TP C172/RM TOPS 050 ON DEP RWY25
```
Report
a routine report filed through OXR
Where
over KOXR
Time
23:15 UTC
Height
at 5,000 ft
Aircraft
C172
Remarks
tops 5,000 ft on departure runway 25
E50P at 3,200 ft, 25 nm southwest, 3:57 pm PDT (22:57 UTC): remarks: bases 3,600 ft on arrival runway 25. 282 nm along the route, 25 nm southwest of the line.
as filed, and in English
```
OXR UA /OV KOXR/TM 2257/FL032/TP E50P/RM BASES 036 ON ARR RWY25
```
Report
a routine report filed through OXR
Where
over KOXR
Time
22:57 UTC
Height
at 3,200 ft
Aircraft
E50P
Remarks
bases 3,600 ft on arrival runway 25
B739 at 33,000 ft, 36 nm northeast, 4:01 pm PDT (23:01 UTC): remarks: mountain wave 10 knots zlawc. 292 nm along the route, 36 nm northeast of the line.
as filed, and in English
```
SDB UA /OV PMD/TM 2301/FL330/TP B739/RM MTN WAVE /- 10 KT /ZLAWC AWC-WEB
```
Report
a routine report filed through SDB
Where
over PMD
Time
23:01 UTC
Height
at 33,000 ft
Aircraft
B739
Remarks
mountain wave 10 knots zlawc
GLF4 at 3,500 ft, 4 nm northeast, 1:52 pm PDT (20:52 UTC): remarks: reported by A GLF4 on 6 mile final on ils to 16R. 301 nm along the route, 4 nm northeast of the line.
as filed, and in English
```
VNY UA /OV VNY/TM 2052/FL035/TP GLF4/RM REPORTED BY A GLF4 ON 6 MILE FINAL ON ILS TO 16R
```
Report
a routine report filed through VNY
Where
over VNY
Time
20:52 UTC
Height
at 3,500 ft
Aircraft
GLF4
Remarks
reported by A GLF4 on 6 mile final on ils to 16R
B739 at 33,000 ft, 48 nm northeast, 4:02 pm PDT (23:02 UTC): remarks: mountain wave 10 knots zlawc. At the destination end, 48 nm northeast of the line.
as filed, and in English
```
DRA UA /OV VCV242015/TM 2302/FL330/TP B739/RM MTN WAVE /- 10 KT /ZLAWC AWC-WEB
```
Report
a routine report filed through DRA
Where
15 nm southwest (242°) of VCV
Time
23:02 UTC
Height
at 33,000 ft
Aircraft
B739
Remarks
mountain wave 10 knots zlawc
E55P at 3,000 ft, 6 nm northeast, 3:00 pm PDT (22:00 UTC): a broken layer from 3,000 ft to 5,000 ft, remarks: during the descent RY21. At the destination end, 6 nm northeast of the line.
as filed, and in English
```
SMO UA /OV SMO030008/TM 2200/FL030/TP E55P/SK BKN030-TOP050/RM DURD RY21
```
Report
a routine report filed through SMO
Where
8 nm northeast (030°) of SMO
Time
22:00 UTC
Height
at 3,000 ft
Aircraft
E55P
Sky
a broken layer from 3,000 ft, tops 5,000 ft
Remarks
during the descent RY21
C25M at 3,000 ft, 6 nm northeast, 1:50 pm PDT (20:50 UTC): a broken layer above 3,000 ft, remarks: during the descent RY21. At the destination end, 6 nm northeast of the line.
as filed, and in English
```
SMO UA /OV SMO030008/TM 2050/FL030/TP C25M/SK BKN030-TOPUNKN/RM DURD RY21
```
Report
a routine report filed through SMO
Where
8 nm northeast (030°) of SMO
Time
20:50 UTC
Height
at 3,000 ft
Aircraft
C25M
Sky
a broken layer from 3,000 ft, tops unknown
Remarks
during the descent RY21
C172 at 1,400 ft, 9 nm southeast, 3:53 pm PDT (22:53 UTC): remarks: base 3,400 ft. At the destination end, 9 nm southeast of the line.
as filed, and in English
```
TOA UA /OV 4 E KTOA/TM 2253/FL014/TP C172/RM BASE 034
```
Report
a routine report filed through TOA
Where
4 east KTOA
Time
22:53 UTC
Height
at 1,400 ft
Aircraft
C172
Remarks
base 3,400 ft
B757 at 4,000 ft, 5 nm east, 3:38 pm PDT (22:38 UTC): remarks: reduced visibility below the ceiling ILS25L. At the destination end, 5 nm east of the line.
as filed, and in English
```
LAX UA /OV LAX070010/TM 2238/FL040/TP B757/SK TOPS050 BASES040/RM REDUCED VISIBILITY BELOW THE CEILING. ILS25L
```
Report
a routine report filed through LAX
Where
10 nm east (070°) of LAX
Time
22:38 UTC
Height
at 4,000 ft
Aircraft
B757
Sky
TOPS050 BASES040
Remarks
reduced visibility below the ceiling ILS25L
B737 at 4,000 ft, 4 nm west, 3:37 pm PDT (22:37 UTC): a broken layer from 4,000 ft to 5,000 ft. At the destination end, 4 nm west of the line.
as filed, and in English
```
KLAX UA /OV KLAX/TM 2237/FL040/TP B737/SK BKN040-TOP050
```
Report
a routine report filed through KLAX
Where
over KLAX
Time
22:37 UTC
Height
at 4,000 ft
Aircraft
B737
Sky
a broken layer from 4,000 ft, tops 5,000 ft
B737 at 5,000 ft, 14 nm southeast, 3:30 pm PDT (22:30 UTC): a broken layer from 3,300 ft to 5,000 ft. At the destination end, 14 nm southeast of the line.
as filed, and in English
```
LGB UA /OV KLGB180005/TM 2230/FL050/TP B737/SK BKN033-TOPS050
```
Report
a routine report filed through LGB
Where
5 nm south (180°) of KLGB
Time
22:30 UTC
Height
at 5,000 ft
Aircraft
B737
Sky
a broken layer from 3,300 ft, tops 5,000 ft

6 more routine reports are on the map.

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 4 forecast points nearest it (SFO, FAT, SBA, 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
3,500 ft	200° at 7 kt	+4 kt		116 kt	2 h 46 min	7:16 pm PDT (02:16 UTC)
5,500 ft	200° at 11 kt	+6 kt	8 °C	114 kt	2 h 49 min	7:19 pm PDT (02:19 UTC)
7,500 ft	220° at 13 kt	+4 kt	5 °C	116 kt	2 h 46 min	7:16 pm PDT (02:16 UTC)
9,500 ft	230° at 18 kt	+2 kt	2 °C	118 kt	2 h 43 min	7:13 pm PDT (02:13 UTC)
11,500 ft	230° at 23 kt	+2 kt	-2 °C	118 kt	2 h 43 min	7:13 pm PDT (02:13 UTC)
13,500 ft	230° at 24 kt	0	-6 °C	120 kt	2 h 40 min	7:10 pm PDT (02:10 UTC)
15,500 ft	240° at 24 kt	−2 kt	-9 °C	122 kt	2 h 38 min	7:08 pm PDT (02:08 UTC)
17,500 ft	240° at 24 kt	−4 kt	-13 °C	124 kt	2 h 35 min	7:05 pm PDT (02:05 UTC)
18,000 ft FL180	240° at 24 kt	−5 kt	-14 °C	125 kt	2 h 34 min	7:04 pm PDT (02:04 UTC)
24,000 ft FL240	240° at 30 kt	−5 kt	-22 °C	125 kt	2 h 34 min	7:04 pm PDT (02:04 UTC)
30,000 ft FL300	230° at 39 kt	+2 kt	-28 °C	118 kt	2 h 43 min	7:13 pm PDT (02:13 UTC)
34,000 ft FL340	230° at 38 kt	+4 kt	-34 °C	116 kt	2 h 46 min	7:16 pm PDT (02:16 UTC)
39,000 ft FL390	230° at 42 kt	+2 kt	-44 °C	118 kt	2 h 43 min	7:13 pm PDT (02:13 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; 25 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°
FAT	used from 97 nm out; 50 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°
SBA	used from 194 nm out; 55 nm from the line	L/V	170/13 7°	220/23 4°	220/30 -2°	230/26 -14°	230/34 -20°	220/38 -28°	220/37 -35°	220/43 -44°
WJF	used from 243 nm out; 37 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
APC Napa, CA	departure	VFR	from the south (190°) at 18 knots, gusting to 24	10+ mi	none	35 ft	3:54 pm PDT (22:54 UTC)
LVK Livermore, CA	39 nm out, 2 nm west of the line, tower	VFR	from the west-northwest (300°) at 12 knots, gusting to 19	10+ mi	none	399 ft	22:53 UTC
RHV San Jose, CA	58 nm out, 15 nm southwest of the line, tower	VFR	from the northwest (320°) at 10 knots	10+ mi	none	135 ft	22:55 UTC
LSN Los Banos, CA	97 nm out, 12 nm northeast of the line	no report just now				121 ft
BFL Bakersfield, CA	224 nm out, 24 nm northeast of the line, tower	VFR	from the north-northwest (330°) at 9 knots	10+ mi	none	509 ft	22:54 UTC
VNY Van Nuys, CA	301 nm out, 4 nm east of the line, tower	VFR Sky: scattered clouds at 11,000 feet	from the south (180°) at 10 knots	10+ mi	none	802 ft	22:51 UTC
HHR Hawthorne, CA	destination	VFR Sky: a broken layer at 4,600 feet	from the west-southwest (240°) at 7 knots	10+ mi	4,600 ft	65 ft	3:53 pm PDT (22:53 UTC)

The highest airport on this list sits at 802 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, 7:04 pm PDT (02:04 UTC)

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

The forecast for APC, the departure

From Sun 5:00 pm PDT (00:00 UTC): wind from the south at 15 knots, visibility more than 6 miles, clear skies
From Sun 8:00 pm PDT (03:00 UTC): wind from the south at 6 knots, visibility more than 6 miles, clear skies
From Mon 12:00 pm PDT (19:00 UTC): wind from the southwest at 8 knots, visibility more than 6 miles, clear skies

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

6/7455 SAN FRANCISCO, CA, Thursday, October 8, 2026 through Sunday, October 11, 2026 Local 17 nm from the route, at the departure end · security · until 11 October · ZOA
6/6741 SAN FRANCISCO, CA, Thursday, October 8, 2026 through Sunday, October 11, 2026 Local 16 nm from the route, at the departure end · air shows/sports · until 11 October · ZOA
6/7231 Santa Clara, CA, Sunday, October 11, 2026 through Monday, October 12, 2026 UTC 17 nm from the route, 49 nm along the route · drones kept away from a public gathering · until 12 October · ZOA
4/3635 DISNEYLAND THEME PARK, ANAHEIM,, CA 19 nm from the route, at the destination end · security · ZLA

Daylight

Sunset at APC 6:35 pm PDT (01:35 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: Napa County, Jack Northrop Fld/Hawthorne Municipal.