Plan a flight · Mon 7:30 am EDT (11:30 UTC)

Laurence G Hanscom Field to Oakland San Francisco Bay Airport BED → OAK

2,321 nautical miles (2,671 statute miles) west on a straight line, true course 281°, about 297° magnetic at the departure end (variation 16W). At 120 knots that is 22 h 06 min at the quickest height in today's winds (6,500 ft, a 15-knot headwind), arriving about 2:36 am PDT (09:36 UTC), after sunset at the destination. Right now BED is IFR, wind from the north (360°) at 5 knots; OAK is VFR, wind from the east (100°) at 5 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

SIGMET W21W: thunderstorms (a convective SIGMET) up to 27,000 ft, moving from the southwest at 20 knots, until 8:55 am EDT (12:55 UTC). Near the route, 1853 nm along the route.
as issued
```
WSUS33 KKCI 121055
MKCW WST 121055
CONVECTIVE SIGMET 21W
VALID UNTIL 1255Z
UT ID NV
FROM 40ENE TWF-20SSE PIH-40E BVL-20WNW BVL-40ENE TWF
AREA TS MOV FROM 24020KT. TOPS TO FL270.
```
AIRMET SIERRA 3E: low cloud or poor visibility (IFR conditions) (due to ceilings below 1,000 ft, visibility below 3 miles, precipitation, mist). Over the first 578 nm of the route.
AIRMET TANGO 3W: moderate turbulence above 18,000 ft from 24,000 ft to 33,000 ft. Over the first 329 nm of the route.
AIRMET SIERRA 4E: mountains obscured by cloud (due to mountains obscured by clouds, mist). Over the route from 60 to 219 nm out.
AIRMET TANGO 2W: low-level wind shear (due to air speed loss or gain of 20 knots or more below 2,000 ft above the ground). Near the route, 608 nm along the route.
AIRMET TANGO 2W: 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 route from 927 to 1206 nm out.
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 route from 1166 to 1415 nm out.
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 route from 1375 to 1604 nm out.
AIRMET TANGO 4W: moderate turbulence above 18,000 ft (due to mountain wave) from 34,000 ft to 43,000 ft. Over the route from 1445 to 1773 nm out.
AIRMET TANGO 2W: moderate turbulence below 18,000 ft (due to mountain wave) up to 22,000 ft. Over the route from 1494 to 1594 nm out.
AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 1554 to 2062 nm out.
AIRMET TANGO 5W: strong surface winds (30 knots or more) (due to sustained surface winds greater than 30 knots). Over the route from 1554 to 1594 nm out.
AIRMET ZULU 2C: moderate icing up to 23,000 ft. Over the route from 1584 to 2082 nm out.
AIRMET TANGO 1W: moderate turbulence below 18,000 ft (due to mountain wave) up to 12,000 ft. Over the route from 1704 to 1923 nm out.
AIRMET TANGO 1W: moderate turbulence above 18,000 ft from 18,000 ft to 39,000 ft. Over the last 209 nm of the route.
AIRMET SIERRA 2E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 2192 to 2242 nm out.

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 BED.

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

BCS3 at 10,000 ft, 15 nm southeast, 6:15 am EDT (10:15 UTC): moderate turbulence from 7,000 ft to 9,000 ft, remarks: during the climb ssoxs aid. At the departure end, 15 nm southeast of the line.
as filed, and in English
```
BOS UA /OV BOS/TM 1015/FL100/TP BCS3/TB MOD 070-090/RM DURC SSOXS AID
```
Report
a routine report filed through BOS
Where
over BOS
Time
10:15 UTC
Height
at 10,000 ft
Aircraft
BCS3
Turbulence
moderate from 7,000 ft to 9,000 ft
Remarks
during the climb ssoxs aid
A321 at 9,500 ft, 9 nm east, 5:05 am EDT (09:05 UTC): moderate turbulence, remarks: moderate turbulence during the descent jfund arrival from from 9,500 ft to 7,000 ft, smooth below. At the departure end, 9 nm east of the line.
as filed, and in English
```
BOS UA /OV BOS350010/TM 0905/FL095/TP A321/TB MOD/RM MOD TB DURD JFUND ARR FROM 095-070, SMOOTH BELOW
```
Report
a routine report filed through BOS
Where
10 nm north (350°) of BOS
Time
09:05 UTC
Height
at 9,500 ft
Aircraft
A321
Turbulence
moderate
Remarks
moderate turbulence during the descent jfund arrival from from 9,500 ft to 7,000 ft, smooth below
A321 at 35,000 ft, 18 nm north, 7:16 am EDT (11:16 UTC): moderate chop turbulence above 35,000 ft. 239 nm along the route, 18 nm north of the line.
as filed, and in English
```
SYR UA /OV SYR320020/TM 1116/FL350/TP A321/TB OCNL MOD CHOP 350
```
Report
a routine report filed through SYR
Where
20 nm northwest (320°) of SYR
Time
11:16 UTC
Height
at 35,000 ft
Aircraft
A321
Turbulence
occasional moderate chop at 35,000 ft
A35K at 32,000 ft, 21 nm north, 4:39 am EDT (08:39 UTC): moderate chop turbulence, remarks: fdcs zoa. At the destination end, 21 nm north of the line.
as filed, and in English
```
OAK UA /OV OAK348024/TM 0839/FL320/TP A35K/TB MOD CHOP/RM FDCS ZOA
```
Report
a routine report filed through OAK
Where
24 nm north (348°) of OAK
Time
08:39 UTC
Height
at 32,000 ft
Aircraft
A35K
Turbulence
moderate chop
Remarks
fdcs zoa
C402 at 500 ft, 50 nm south, 7:14 am EDT (11:14 UTC): overcast above 500 ft. At the departure end, 50 nm south of the line.
as filed, and in English
```
EWB UA /OV EWB RY 05 DEPT/TM 1114/FL005/TP C402/SK OVC005
```
Report
a routine report filed through EWB
Where
ewb runway 05 dept
Time
11:14 UTC
Height
at 500 ft
Aircraft
C402
Sky
overcast from 500 ft
B738 at 600 ft, 15 nm southeast, 7:07 am EDT (11:07 UTC): a broken layer above 600 ft. At the departure end, 15 nm southeast of the line.
as filed, and in English
```
BOS UA /OV BOS/TM 1107/FL006/TP B738/SK BKN006
```
Report
a routine report filed through BOS
Where
over BOS
Time
11:07 UTC
Height
at 600 ft
Aircraft
B738
Sky
a broken layer from 600 ft
H25B at 500 ft, 0 nm south, 7:06 am EDT (11:06 UTC): overcast above 500 ft. At the departure end, 0 nm south of the line.
as filed, and in English
```
BED UA /OV BED/TM 1106/FL005/TP H25B/SK OVC005
```
Report
a routine report filed through BED
Where
over BED
Time
11:06 UTC
Height
at 500 ft
Aircraft
H25B
Sky
overcast from 500 ft
E75S at 8,000 ft, 15 nm southeast, 7:04 am EDT (11:04 UTC): light chop turbulence, overcast from 800 ft to 3,000 ft. At the departure end, 15 nm southeast of the line.
as filed, and in English
```
BOS UA /OV BOS/TM 1104/FL080/TP E75S/SK OVC008-TOP030/TB LGT CHOP ABV080
```
Report
a routine report filed through BOS
Where
over BOS
Time
11:04 UTC
Height
at 8,000 ft
Aircraft
E75S
Sky
overcast from 800 ft, tops 3,000 ft
Turbulence
light chop ABV080
MULT at 2,000 ft, 17 nm northeast, 6:18 am EDT (10:18 UTC): light turbulence from 1,500 ft to 2,000 ft, remarks: during the climb out of KBOS. At the departure end, 17 nm northeast of the line.
as filed, and in English
```
LWM UA /OV LWM/TM 1018/FL020/TP MULT/TB CONS LGT 020-015/RM DURC OUT OF KBOS
```
Report
a routine report filed through LWM
Where
over LWM
Time
10:18 UTC
Height
at 2,000 ft
Aircraft
MULT
Turbulence
continuous light from 2,000 ft to 1,500 ft
Remarks
during the climb out of KBOS
A21N at 700 ft, 15 nm southeast, 6:00 am EDT (10:00 UTC): a broken layer above 700 ft. At the departure end, 15 nm southeast of the line.
as filed, and in English
```
BOS UA /OV BOS/TM 1000/FL007/TP A21N/SK BKN007
```
Report
a routine report filed through BOS
Where
over BOS
Time
10:00 UTC
Height
at 700 ft
Aircraft
A21N
Sky
a broken layer from 700 ft
B38M at 10,000 ft, 14 nm east, 5:42 am EDT (09:42 UTC): light turbulence, remarks: light turbulence during the climb from 8,000 ft to 10,000 ft. At the departure end, 14 nm east of the line.
as filed, and in English
```
BOS UA /OV BOS020010/TM 0942/FL100/TP B38M/TB LGT/RM LGT TB DURC 080-100
```
Report
a routine report filed through BOS
Where
10 nm north (020°) of BOS
Time
09:42 UTC
Height
at 10,000 ft
Aircraft
B38M
Turbulence
light
Remarks
light turbulence during the climb from 8,000 ft to 10,000 ft
B738 at 2,000 ft, 41 nm south, 6:44 am EDT (10:44 UTC): a routine report with nothing remarked on. At the departure end, 41 nm south of the line.
as filed, and in English
```
BDL UA /OV KBDL095005/TM 1044/FL020/TP B738/SK BASES 005 TOPS 019
```
Report
a routine report filed through BDL
Where
5 nm east (095°) of KBDL
Time
10:44 UTC
Height
at 2,000 ft
Aircraft
B738
Sky
bases 500 ft tops 1,900 ft
B737 at 5,000 ft, 36 nm south, 7:02 am EDT (11:02 UTC): no turbulence, scattered clouds from 3,500 ft to 4,000 ft. At the departure end, 36 nm south of the line.
as filed, and in English
```
BDL UA /OV KBDL020007/TM 1102/FL050/TP B737/SK SCT 035 TOPS 040/TB SMOOTH
```
Report
a routine report filed through BDL
Where
7 nm north (020°) of KBDL
Time
11:02 UTC
Height
at 5,000 ft
Aircraft
B737
Sky
scattered clouds from 3,500 ft, tops 4,000 ft
Turbulence
smooth
B737 at 800 ft, 42 nm south, 5:58 am EDT (09:58 UTC): a broken layer above 800 ft, remarks: during the descent runway 6. At the departure end, 42 nm south of the line.
as filed, and in English
```
BDL UA /OV BDL/TM 0958/FL008/TP B737/SK BKN008/RM DURD RY6
```
Report
a routine report filed through BDL
Where
over BDL
Time
09:58 UTC
Height
at 800 ft
Aircraft
B737
Sky
a broken layer from 800 ft
Remarks
during the descent runway 6

13 more routine reports are on the map.

Winds aloft along the route, and the time en route the forecast for use 08:00–15:00 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 20 forecast points nearest it (BOS, ALB, SYR, BUF, CLE, TVC, MKG, GRB, LSE, MCW, FSD, ONL, BFF, RKS, SLC, ELY, BAM, RNO, SAC, SFO). A plus sign is a headwind, a minus sign a tailwind.

Height	Average wind	Head- or tailwind	Temperature	Ground speed	Time en route	Arrival
4,500 ft	270° at 16 kt	+16 kt	22 °C	104 kt	22 h 19 min	2:49 am PDT (09:49 UTC)
6,500 ft	270° at 15 kt	+15 kt	13 °C	105 kt	22 h 06 min	2:36 am PDT (09:36 UTC)
8,500 ft	260° at 16 kt	+17 kt	8 °C	103 kt	22 h 32 min	3:02 am PDT (10:02 UTC)
10,500 ft	260° at 18 kt	+19 kt	4 °C	101 kt	22 h 59 min	3:29 am PDT (10:29 UTC)
12,500 ft	260° at 20 kt	+21 kt	0 °C	99 kt	23 h 27 min	3:57 am PDT (10:57 UTC)
14,500 ft	260° at 20 kt	+21 kt	-4 °C	99 kt	23 h 27 min	3:57 am PDT (10:57 UTC)
16,500 ft	260° at 20 kt	+21 kt	-9 °C	99 kt	23 h 27 min	3:57 am PDT (10:57 UTC)
18,000 ft FL180	260° at 19 kt	+21 kt	-12 °C	99 kt	23 h 27 min	3:57 am PDT (10:57 UTC)
24,000 ft FL240	260° at 25 kt	+26 kt	-22 °C	94 kt	24 h 41 min	5:11 am PDT (12:11 UTC)
30,000 ft FL300	260° at 33 kt	+35 kt	-34 °C	85 kt	27 h 18 min	7:48 am PDT (14:48 UTC)
34,000 ft FL340	260° at 39 kt	+42 kt	-40 °C	78 kt	29 h 45 min	10:15 am PDT (17:15 UTC)
39,000 ft FL390	270° at 42 kt	+46 kt	-47 °C	74 kt	31 h 22 min	11:52 am PDT (18:52 UTC)

Based on data from the 12th at 06:00 UTC; valid on the 12th at 12:00 UTC for use 08:00 to 15:00 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
BOS	used from 0 nm out; 39 nm from the line	020/10	360/20 10°	340/19 7°	290/21 2°	270/35 -9°	260/42 -22°	250/55 -38°	240/75 -43°	250/72 -51°
ALB	used from 50 nm out; 38 nm from the line	340/22	340/19 9°	320/16 7°	330/16 2°	330/19 -11°	320/21 -23°	320/25 -39°	280/30 -44°	270/41 -51°
SYR	used from 149 nm out; 42 nm from the line	330/17	320/14 9°	350/18 8°	350/26 2°	340/25 -11°	360/34 -22°	350/43 -39°	330/50 -46°	350/50 -54°
BUF	used from 249 nm out; 58 nm from the line	300/11	330/15 11°	340/26 8°	330/28 2°	340/31 -10°	340/32 -21°	340/52 -37°	340/59 -46°	330/66 -53°
CLE	used from 448 nm out; 121 nm from the line	310/7	350/20 14°	340/16 9°	320/21 2°	320/32 -8°	330/34 -20°	330/45 -36°	320/60 -45°	320/64 -51°
TVC	used from 498 nm out; 131 nm from the line	270/31	280/23 15°	260/22 8°	260/29 4°	280/29 -11°	280/42 -21°	270/42 -36°	270/54 -47°	290/67 -51°
MKG	used from 548 nm out; 88 nm from the line	260/28	260/18 15°	250/16 9°	260/22 4°	280/31 -9°	270/35 -21°	270/44 -35°	270/42 -45°	290/61 -51°
GRB	used from 697 nm out; 61 nm from the line	250/32	250/22 17°	240/18 8°	280/21 6°	280/34 -11°	280/35 -21°	280/39 -37°	270/52 -45°	290/60 -49°
LSE	used from 797 nm out; 60 nm from the line	250/25	240/21 17°	240/28 11°	250/28 5°	280/24 -10°	280/31 -21°	260/35 -37°	270/45 -43°	280/59 -47°
MCW	used from 897 nm out; 48 nm from the line	250/36	250/24 19°	240/26 11°	250/30 5°	270/22 -9°	260/30 -21°	260/31 -36°	280/53 -38°	280/66 -48°
FSD	used from 1046 nm out; 53 nm from the line	210/20	230/23 21°	220/25 14°	230/30 5°	230/26 -9°	240/30 -21°	270/33 -36°	260/47 -37°	270/58 -47°
ONL	used from 1146 nm out; 45 nm from the line		250/31 22°	230/27 16°	220/25 8°	230/25 -9°	220/29 -22°	250/42 -33°	250/48 -36°	250/52 -46°
BFF	used from 1295 nm out; 111 nm from the line		280/28	260/39 11°	240/34 5°	210/38 -11°	210/52 -22°	230/61 -31°	230/61 -36°	240/56 -45°
RKS	used from 1544 nm out; 104 nm from the line			250/9	230/21 -1°	210/43 -14°	220/59 -23°	220/55 -32°	220/53 -35°	220/48 -44°
SLC	used from 1744 nm out; 43 nm from the line		200/16	210/23 4°	220/34 -3°	210/40 -16°	220/66 -23°	220/64 -31°	220/57 -36°	220/50 -43°
ELY	used from 1893 nm out; 59 nm from the line			210/34 1°	220/40 -4°	220/39 -17°	210/51 -24°	220/65 -30°	220/60 -37°	220/56 -44°
BAM	used from 2042 nm out; 79 nm from the line			280/9 -2°	260/18 -8°	190/47 -19°	200/50 -29°	210/56 -29°	220/54 -34°	220/45 -42°
RNO	used from 2092 nm out; 78 nm from the line		010/6	270/12 -3°	220/26 -10°	280/13 -19°	350/44 -24°	320/30 -32°	260/22 -36°	240/24 -42°
SAC	used from 2192 nm out; 62 nm from the line	L/V	L/V 4°	340/9 -4°	340/22 -8°	360/71 -12°	360/82 -23°	350/58 -37°	310/30 -40°	270/25 -44°
SFO	used from 2292 nm out; 24 nm from the line	090/9	050/12 4°	010/17 -2°	350/34 -3°	360/70 -11°	360/75 -22°	350/57 -38°	330/37 -42°	280/25 -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
BED Bedford, MA	departure	IFR Sky: overcast at 500 feet	from the north (360°) at 5 knots	10+ mi	500 ft	132 ft	6:51 am EDT (10:51 UTC)
ALB Albany, NY	110 nm out, 3 nm southwest of the line, tower	low IFR Sky: a broken layer at 400 feet, overcast at 2,000 feet Weather: light drizzle, mist	calm	3 mi	400 ft	284 ft	10:51 UTC
ROC Rochester, NY	279 nm out, 6 nm west of the line, tower	marginal VFR Sky: a few clouds at 1,200 feet, overcast at 2,700 feet	from the southwest (230°) at 3 knots	10+ mi	2,700 ft	558 ft	10:54 UTC
MBS Saginaw, MI	568 nm out, 4 nm northeast of the line, tower	VFR Weather: mist	from the south-southwest (210°) at 6 knots	6 mi	none	668 ft	10:53 UTC
MSN Madison, WI	797 nm out, 21 nm south of the line, tower	VFR Sky: a broken layer at 22,000 feet	from the south (190°) at 7 knots	10+ mi	22,000 ft	886 ft	10:53 UTC
SHL Sheldon, IA	1076 nm out, 3 nm northwest of the line	VFR	from the east (100°) at 4 knots	10+ mi	none	1,419 ft	11:15 UTC
AGZ Wagner, SD	1186 nm out, 7 nm north of the line	low IFR Sky: overcast at 300 feet Weather: fog	from the north (360°) at 8 knots	0.5 mi	300 ft	1,477 ft	11:15 UTC
GUR Guernsey, WY	1475 nm out, 10 nm north of the line, tower	VFR Sky: a broken layer at 14,000 feet, overcast at 17,000 feet	from the southeast (140°) at 3 knots	9 mi	14,000 ft	4,401 ft	10:55 UTC
SLC Salt Lake City, UT	1813 nm out, 7 nm north of the line, tower	VFR Sky: a few clouds at 4,000 feet, scattered clouds at 7,500 feet, a broken layer at 10,000 feet, a broken layer at 13,000 feet	from the south-southeast (150°) at 13 knots, gusting to 20	10+ mi	10,000 ft	4,230 ft	10:54 UTC
TMT Austin, NV	2062 nm out, 9 nm northwest of the line	VFR Sky: scattered clouds at 6,000 feet, a broken layer at 8,000 feet, overcast at 10,000 feet	calm	10+ mi	8,000 ft	5,735 ft	11:15 UTC
SCK Stockton, CA	2272 nm out, 9 nm south of the line, tower	VFR	from the northwest (310°) at 3 knots	10+ mi	none	32 ft	10:55 UTC
OAK Oakland, CA	destination	VFR Sky: a few clouds at 2,000 feet	from the east (100°) at 5 knots	10+ mi	none	9 ft	3:53 am PDT (10:53 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 OAK when you get there the forecast at the estimated arrival, 2:36 am PDT (09:36 UTC)

Wind from the west at 8 knots, visibility more than 6 miles, clear skies VFR

The whole forecast for OAK

From Mon 5:00 am PDT (12:00 UTC): wind from the east at 5 knots, visibility more than 6 miles, a few clouds at 2,000 feet
From Mon 11:00 am PDT (18:00 UTC): wind from the west at 8 knots, visibility more than 6 miles, clear skies

The forecast for BED, the departure

From Mon 8:00 am EDT (12:00 UTC): wind from the north at 5 knots, visibility more than 6 miles, overcast at 500 feet
From Mon 10:00 am EDT (14:00 UTC): wind from the north at 4 knots, visibility more than 6 miles, overcast at 1,500 feet
From Mon 12:00 pm EDT (16:00 UTC): wind from the north-northwest at 4 knots, visibility more than 6 miles, scattered clouds at 4,000 feet
From Tue 12:00 am EDT (04:00 UTC): wind from the northeast at 8 knots, visibility more than 6 miles, overcast at 3,000 feet
From Tue 4:00 am EDT (08:00 UTC): wind from the east-northeast at 10 knots, visibility more than 6 miles, light rain, overcast at 800 feet

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

6/8802 Foxborough, MA, Saturday, October 17, 2026 through Sunday, October 18, 2026 UTC 22 nm from the route, at the departure end · drones kept away from a public gathering · starts Saturday 17 October · ZBW

Daylight

Sunset at BED 6:08 pm EDT (22:08 UTC), at OAK 6:34 pm PDT (01:34 UTC) (civil twilight ends 7:00 pm PDT (02:00 UTC)). At 120 knots the arrival at OAK is before sunrise there (7:15 am PDT (14:15 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 Northeast · loop National Weather Service

Radar now, the central Great Lakes · loop National Weather Service

Radar now, the upper Mississippi valley · 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: Laurence G Hanscom Field, Oakland San Francisco Bay Airport.