The U.S. aircraft register, updated daily
Plan a flight · Mon 1:15 am EDT (05:15 UTC)

General Edward Lawrence Logan International to San Diego International BOS → SAN

2,244 nautical miles (2,582 statute miles) west on a straight line, true course 271°, about 286° magnetic at the departure end (variation 15W). At 120 knots that is 21 h 47 min at the quickest height in today's winds (4,500 ft, a 17-knot headwind), arriving about 8:02 pm PDT (03:02 UTC), after sunset at the destination. Right now BOS is IFR, wind from the north-northeast (030°) at 11 knots; SAN is marginal VFR, 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: 3,623 flights in the DOT's last twelve reported months, the route's page.

The return flight

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 E18E: thunderstorms (a convective SIGMET) up to 30,000 ft, moving from the southwest at 35 knots, until 2:55 am EDT (06:55 UTC). Near the route, at the departure end.
    as issued
    WSUS31 KKCI 120455
    MKCE WST 120455
    CONVECTIVE SIGMET 18E
    VALID UNTIL 0655Z
    MA RI CT AND MA RI NY CSTL WTRS
    FROM 40E BOS-130SE ACK-170S ACK-50SE HTO-20NW PVD-40E BOS
    AREA EMBD TS MOV FROM 24035KT. TOPS TO FL300.
  • SIGMET 7C: thunderstorms (a convective SIGMET) up to 34,000 ft, moving from the southwest at 40 knots, until 2:55 am EDT (06:55 UTC). Over the route from 1516 to 1695 nm out.
    as issued
    WSUS32 KKCI 120455
    MKCC WST 120455
    CONVECTIVE SIGMET 7C
    VALID UNTIL 0655Z
    TX OK CO NM
    FROM 40NNW PUB-70WSW LBL-40NE CME-40ESE RSK-30ENE HBU-40NNW PUB
    AREA TS MOV FROM 22040KT. TOPS TO FL340.
  • 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 728 nm of the route.
  • AIRMET TANGO 3W: moderate turbulence above 18,000 ft from 21,000 ft to 33,000 ft. Over the first 309 nm of the route.
  • AIRMET TANGO 2W: moderate turbulence below 18,000 ft up to 10,000 ft. Over the first 80 nm of the route.
  • AIRMET ZULU 1C: moderate icing up to 22,000 ft. Over the route from 100 to 110 nm out.
  • AIRMET SIERRA 4E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 100 to 359 nm out.
  • AIRMET TANGO 3W: 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 908 to 1486 nm out.
  • AIRMET TANGO 4W: moderate turbulence below 18,000 ft up to 18,000 ft. Over the route from 1476 to 1985 nm out.
  • AIRMET TANGO 2W: moderate turbulence above 18,000 ft from 35,000 ft to 45,000 ft. Over the last 728 nm of the route.
  • 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 1566 to 1596 nm out.
  • AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 1865 to 2035 nm out.
  • AIRMET SIERRA 2E: low cloud or poor visibility (IFR conditions) (due to ceilings below 1,000 ft, visibility below 3 miles, precipitation, mist). Over the route from 1915 to 1955 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 BOS.

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

  • urgent B39M at 35,000 ft, 25 nm north, 11:15 pm EDT (03:15 UTC): remarks: no inj/dmg zob. 409 nm along the route, 25 nm north of the line.
    as filed, and in English
    DKK UUA /OV DKK280040/TM 0315/FL350/TP B39M/TB MTN WVE ACTN +/-5KTS/RM NO INJ/DMG ZOB
    Report
    an urgent report filed through DKK
    Where
    40 nm west (280°) of DKK
    Time
    03:15 UTC
    Height
    at 35,000 ft
    Aircraft
    B39M
    Turbulence
    mountain wve actn a 5-knot loss of airspeed
    Remarks
    no inj/dmg zob
  • UAL932 at 35,000 ft, 50 nm east, 12:34 am EDT (04:34 UTC): moderate turbulence, wind 240° at 69 knots. At the departure end, 50 nm east of the line.
    as filed, and in English
    ARP UAL932 4206N 06957W 0434 F350 240/069KT TB MOD TURB IC
    Report
    a routine report filed through ARP
  • UAL932 at 35,000 ft, 47 nm east, 12:33 am EDT (04:33 UTC): moderate turbulence. At the departure end, 47 nm east of the line.
    as filed, and in English
    ARP UAL932 4206N 07001W 0433 F350 TB MODERATE SK CLEAR IC NONE
    Report
    a routine report filed through ARP
  • UAL330 at 35,000 ft, 35 nm north, 12:30 am EDT (04:30 UTC): moderate turbulence, wind 235° at 92 knots. At the departure end, 35 nm north of the line.
    as filed, and in English
    ARP UAL330 4257N 07145W 0430 F350 235/092KT TB MOD TURB CONT MOD CHOP IC
    Report
    a routine report filed through ARP
  • BE9L at 24,500 ft, 46 nm northwest, 10:21 pm EDT (02:21 UTC): moderate turbulence, remarks: ZDVWC-41. 1576 nm along the route, 46 nm northwest of the line.
    as filed, and in English
    PUB UA /OV PUB250040/TM 0221/FL245/TP BE9L/TB OCNL MOD/RM ZDVWC-41
    Report
    a routine report filed through PUB
    Where
    40 nm west (250°) of PUB
    Time
    02:21 UTC
    Height
    at 24,500 ft
    Aircraft
    BE9L
    Turbulence
    occasional moderate
    Remarks
    ZDVWC-41
  • B738 at 300 ft, 0 nm south, 11:00 pm EDT (03:00 UTC): a broken layer above 500 ft, remarks: during the descent runway 4R bos. At the departure end, 0 nm south of the line.
    as filed, and in English
    BOS UA /OV KBOS/TM 0300/FL003/TP B738/SK BKN005/RM DURD RY 4R BOS
    Report
    a routine report filed through BOS
    Where
    over KBOS
    Time
    03:00 UTC
    Height
    at 300 ft
    Aircraft
    B738
    Sky
    a broken layer from 500 ft
    Remarks
    during the descent runway 4R bos
  • CRJ7 descending, 34 nm north, 12:09 am EDT (04:09 UTC): a routine report with nothing remarked on. At the departure end, 34 nm north of the line.
    as filed, and in English
    MHT UA /OV RWY 6/TM 0409/FLDURD/TP CRJ7/SK 006
    Report
    a routine report filed through MHT
    Where
    runway 6
    Time
    04:09 UTC
    Height
    during the descent
    Aircraft
    CRJ7
    Sky
    at 600 ft
  • CRJ9 descending, 34 nm north, 11:16 pm EDT (03:16 UTC): a routine report with nothing remarked on. At the departure end, 34 nm north of the line.
    as filed, and in English
    MHT UA /OV RWY 6/TM 0316/FLDURD/TP CRJ9/SK 004
    Report
    a routine report filed through MHT
    Where
    runway 6
    Time
    03:16 UTC
    Height
    during the descent
    Aircraft
    CRJ9
    Sky
    at 400 ft
  • B38M descending, 34 nm north, 10:53 pm EDT (02:53 UTC): overcast above 1,500 ft; scattered clouds above 500 ft. At the departure end, 34 nm north of the line.
    as filed, and in English
    MHT UA /OV RWY 17/TM 0253/FLDURD/TP B38M/SK 015 OVC / 005 SCT
    Report
    a routine report filed through MHT
    Where
    runway 17
    Time
    02:53 UTC
    Height
    during the descent
    Aircraft
    B38M
    Sky
    at 1,500 ft overcast; at 500 ft scattered
  • B739 descending, 24 nm north, 12:54 am EDT (04:54 UTC): a routine report with nothing remarked on. 549 nm along the route, 24 nm north of the line.
    as filed, and in English
    DTW UA /OV DTW/TM 0454/FLDURD/TP B739/SK BASES 011
    Report
    a routine report filed through DTW
    Where
    over DTW
    Time
    04:54 UTC
    Height
    during the descent
    Aircraft
    B739
    Sky
    bases 1,100 ft
  • A320 descending, 24 nm north, 11:27 pm EDT (03:27 UTC): overcast above 1,400 ft. 549 nm along the route, 24 nm north of the line.
    as filed, and in English
    DTW UA /OV DTW/TM 0327/FLDURD/TP A320/SK 014 OVC
    Report
    a routine report filed through DTW
    Where
    over DTW
    Time
    03:27 UTC
    Height
    during the descent
    Aircraft
    A320
    Sky
    at 1,400 ft overcast
  • B738 at 1,300 ft, 11 nm south, 12:45 am EDT (04:45 UTC): overcast from 1,300 ft to 3,000 ft, remarks: during the descent. 568 nm along the route, 11 nm south of the line.
    as filed, and in English
    TOL UA /OV KTOL/TM 0445/FL013/TP B738/SK OVC013-TOP030/RM DURD
    Report
    a routine report filed through TOL
    Where
    over KTOL
    Time
    04:45 UTC
    Height
    at 1,300 ft
    Aircraft
    B738
    Sky
    overcast from 1,300 ft, tops 3,000 ft
    Remarks
    during the descent
  • PA44 descending, 11 nm south, 10:27 pm EDT (02:27 UTC): a broken layer from 900 ft to 1,500 ft; a broken layer from 2,600 ft to 3,500 ft, fog. 568 nm along the route, 11 nm south of the line.
    as filed, and in English
    TOL UA /OV TOL/TM 0227/FLDURD/TP PA44/SK BKN009 TOPS015 BKN026 TOPS035/WX FG
    Report
    a routine report filed through TOL
    Where
    over TOL
    Time
    02:27 UTC
    Height
    during the descent
    Aircraft
    PA44
    Sky
    BKN009 TOPS015 BKN026 TOPS035
    Weather
    fog
  • LJ45 at 10,000 ft, 19 nm south, 12:31 am EDT (04:31 UTC): no turbulence, clear, remarks: ground fog at fwa FV10SM on final runway 14. 648 nm along the route, 19 nm south of the line.
    as filed, and in English
    FWA UA /OV OLK/TM 0431/FL100/TP LJ45/SK CLR/TB SMOOTH/RM GROUND FOG AT FWA. FV10SM ON FINAL RY 14
    Report
    a routine report filed through FWA
    Where
    over OLK
    Time
    04:31 UTC
    Height
    at 10,000 ft
    Aircraft
    LJ45
    Sky
    clear
    Turbulence
    smooth
    Remarks
    ground fog at fwa FV10SM on final runway 14

8 more routine reports are on the map.

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 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 19 forecast points nearest it (BOS, BDL, ALB, SYR, BUF, CLE, FWA, JOT, BRL, DSM, MKC, SLN, GCK, PUB, ALS, FMN, PRC, BLH, SAN). A plus sign is a headwind, a minus sign a tailwind.

HeightAverage windHead- or tailwindTemperatureGround speedTime en routeArrival
4,500 ft240° at 17 kt+17 kt21 °C103 kt21 h 47 min8:02 pm PDT (03:02 UTC)
6,500 ft250° at 16 kt+17 kt13 °C103 kt21 h 47 min8:02 pm PDT (03:02 UTC)
8,500 ft240° at 15 kt+17 kt10 °C103 kt21 h 47 min8:02 pm PDT (03:02 UTC)
10,500 ft240° at 16 kt+17 kt6 °C103 kt21 h 47 min8:02 pm PDT (03:02 UTC)
12,500 ft240° at 18 kt+19 kt2 °C101 kt22 h 13 min8:28 pm PDT (03:28 UTC)
14,500 ft240° at 22 kt+23 kt-2 °C97 kt23 h 08 min9:23 pm PDT (04:23 UTC)
16,500 ft240° at 26 kt+28 kt-6 °C92 kt24 h 23 min10:38 pm PDT (05:38 UTC)
18,000 ft FL180240° at 29 kt+31 kt-9 °C89 kt25 h 13 min11:28 pm PDT (06:28 UTC)
24,000 ft FL240240° at 36 kt+37 kt-20 °C83 kt27 h 02 min1:17 am PDT (08:17 UTC)
30,000 ft FL300250° at 48 kt+50 kt-32 °C70 kt32 h 03 min6:18 am PDT (13:18 UTC)
34,000 ft FL340250° at 57 kt+59 kt-39 °C61 kt36 h 47 min11:02 am PDT (18:02 UTC)
39,000 ft FL390260° at 52 kt+54 kt-48 °C66 kt34 h8:15 am PDT (15:15 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
PointFrom3,0006,0009,00012,00018,00024,00030,00034,00039,000
BOSused from 0 nm out; 25 nm from the line110/20200/26 12°280/24 8°260/29 3°250/47 -10°230/59 -19°230/74 -33°240/95 -41°240/96 -53°
BDLused from 50 nm out; 26 nm from the line120/24290/23 12°280/21 8°250/36 3°250/41 -11°230/48 -21°230/78 -32°230/96 -41°230/86 -52°
ALBused from 100 nm out; 24 nm from the line120/9270/8 10°L/V 5°260/9 1°260/34 -10°250/42 -22°240/57 -35°240/70 -42°240/65 -50°
SYRused from 199 nm out; 49 nm from the line280/13350/18 10°340/10 6°300/15 1°280/17 -12°270/16 -23°280/25 -38°250/40 -42°240/53 -50°
BUFused from 299 nm out; 49 nm from the line320/10010/16 10°360/10 6°340/13 2°330/22 -11°300/25 -23°320/31 -38°300/29 -44°280/36 -50°
CLEused from 399 nm out; 71 nm from the line340/7010/16 13°350/18 8°350/20 3°340/31 -10°340/46 -21°340/54 -37°330/62 -44°340/65 -49°
FWAused from 549 nm out; 76 nm from the line300/17320/20 16°330/20 10°340/15 3°310/27 -8°320/37 -20°330/52 -36°330/65 -43°330/60 -50°
JOTused from 698 nm out; 47 nm from the line250/23270/22 15°250/16 10°240/9 4°280/22 -7°280/29 -19°300/29 -34°290/50 -43°300/64 -52°
BRLused from 848 nm out; 34 nm from the line230/24240/29 15°290/16 10°280/15 4°260/23 -7°260/32 -19°260/36 -33°280/48 -41°280/59 -52°
DSMused from 997 nm out; 74 nm from the line230/40250/33 17°250/18 12°240/17 5°260/28 -8°270/34 -19°260/41 -33°260/55 -41°270/62 -51°
MKCused from 1047 nm out; 58 nm from the line220/44250/28 18°250/18 13°240/12 6°280/24 -6°240/34 -18°260/47 -30°260/51 -40°270/58 -50°
SLNused from 1147 nm out; 67 nm from the line210/53230/41 20°240/26 14°230/16 8°240/25 -7°240/35 -19°250/61 -30°260/65 -38°260/56 -49°
GCKused from 1296 nm out; 73 nm from the line220/48 21°230/37 14°250/30 8°230/37 -6°240/37 -20°240/69 -28°250/67 -37°260/58 -48°
PUBused from 1446 nm out; 81 nm from the line230/25 13°230/32 6°220/44 -8°230/49 -21°240/70 -28°240/67 -34°240/58 -46°
ALSused from 1596 nm out; 17 nm from the line230/37 4°220/54 -9°230/62 -22°240/77 -26°240/74 -33°230/59 -45°
FMNused from 1695 nm out; 30 nm from the line220/28 9°220/40 2°220/53 -10°220/62 -22°230/79 -28°240/91 -34°230/71 -45°
PRCused from 1845 nm out; 110 nm from the line210/25 5°200/30 1°220/55 -10°220/61 -21°220/84 -28°230/90 -34°230/73 -45°
BLHused from 2044 nm out; 41 nm from the line210/13200/21 11°200/22 5°210/25 -1°210/51 -10°220/61 -20°220/81 -29°220/92 -34°220/79 -45°
SANused from 2194 nm out; 25 nm from the line200/11200/23 7°210/27 4°210/31 -3°220/56 -10°220/56 -19°220/52 -30°220/64 -37°220/67 -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

AirportWhereConditionsWindVisibilityCeilingElevationReported
BOS Boston, MA departure IFR Sky: a broken layer at 500 feet, a broken layer at 2,700 feet, overcast at 4,000 feet Weather: light rain, mist from the north-northeast (030°) at 11 knots 4 mi 500 ft 19 ft 12:57 am EDT (04:57 UTC)
BGM Binghamton, NY 219 nm out, 6 nm south of the line, tower VFR Sky: a few clouds at 2,200 feet, scattered clouds at 3,100 feet from the east-southeast (120°) at 4 knots 10+ mi none 1,635 ft 04:53 UTC
ERI Erie, PA 409 nm out, 1 nm northeast of the line, tower marginal VFR Sky: overcast at 3,000 feet variable at 4 knots 10+ mi 3,000 ft 732 ft 00:51 UTC
TOL Toledo, OH 568 nm out, 11 nm south of the line, tower marginal VFR Sky: overcast at 1,500 feet from the west-southwest (240°) at 3 knots 7 mi 1,500 ft 683 ft 05:09 UTC
SBN South Bend, IN 678 nm out, 15 nm northwest of the line, tower VFR calm 9 mi none 798 ft 04:54 UTC
STJ St Joseph, MO 1087 nm out, 15 nm south of the line, tower VFR from the south (190°) at 10 knots 10+ mi none 826 ft 04:53 UTC
CNK Concordia, KS 1217 nm out, 7 nm north of the line VFR Weather: light rain from the south (180°) at 15 knots, gusting to 25 10+ mi none 1,488 ft 04:55 UTC
LAA Lamar, CO 1466 nm out, 2 nm south of the line VFR from the southwest (220°) at 15 knots 10+ mi none 3,705 ft 04:53 UTC
FMN Farmington, NM 1745 nm out, 22 nm north of the line, tower VFR from the south-southwest (210°) at 8 knots 10+ mi none 5,506 ft 04:53 UTC
FLG Flagstaff, AZ 1935 nm out, 4 nm north of the line, tower marginal VFR Sky: a broken layer at 1,000 feet, overcast at 1,700 feet from the southwest (220°) at 17 knots, gusting to 31 10+ mi 1,000 ft 7,014 ft 04:57 UTC
RNM Ramona, CA 2224 nm out, 10 nm northwest of the line, tower marginal VFR Sky: a few clouds at 500 feet, a broken layer at 1,300 feet, overcast at 2,200 feet Weather: mist from the west-northwest (290°) at 3 knots 5 mi 1,300 ft 1,394 ft 05:09 UTC
SAN San Diego, CA destination marginal VFR Sky: a broken layer at 2,800 feet, overcast at 3,400 feet calm 10+ mi 2,800 ft 16 ft 9:56 pm PDT (04:56 UTC)

The highest airport on this list sits at 7,014 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.

At SAN when you get there the forecast at the estimated arrival, 8:02 pm PDT (03:02 UTC)

Wind from the west-southwest at 8 knots, visibility more than 6 miles, a broken layer at 5,000 feet VFR

The whole forecast for SAN
  • From Sun 10:00 pm PDT (05:00 UTC): wind from the southwest at 6 knots, visibility more than 6 miles, showers nearby, a broken layer at 2,500 feet, a broken layer at 3,500 feet
  • From Mon 12:00 pm PDT (19:00 UTC): wind from the west-southwest at 10 knots, gusting to 17, visibility more than 6 miles, a few clouds at 2,500 feet, a broken layer at 5,000 feet
  • From Mon 5:00 pm PDT (00:00 UTC): wind from the west-southwest at 8 knots, visibility more than 6 miles, a broken layer at 5,000 feet
The forecast for BOS, the departure
  • From Sun 8:00 pm EDT (00:00 UTC): wind from the southeast at 4 knots, visibility 4 miles, heavy rain, mist, scattered clouds at 2,200 feet, a broken layer at 2,800 feet and more above
  • From Sun 10:00 pm EDT (02:00 UTC): wind from the east-southeast at 5 knots, visibility 3 miles, light rain, mist, overcast at 1,000 feet
  • From Sun 11:00 pm EDT (03:00 UTC): wind from the east at 6 knots, visibility 2 miles, light rain, mist, overcast at 800 feet
  • From Mon 2:00 am EDT (06:00 UTC): wind from the northeast at 8 knots, visibility 2 miles, light rain showers, mist, overcast at 300 feet
  • From Mon 9:00 am EDT (13:00 UTC): wind from the north at 7 knots, visibility 3 miles, mist, a broken layer at 800 feet
  • From Mon 1:00 pm EDT (17:00 UTC): wind from the north-northwest at 5 knots, visibility more than 6 miles, scattered clouds at 15,000 feet
  • From Mon 11:00 pm EDT (03:00 UTC): wind from the north-northeast at 5 knots, visibility more than 6 miles, scattered clouds at 4,500 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 16 nm from the route, at the departure end · drones kept away from a public gathering · starts Saturday 17 October · ZBW
  • 6/8829 Youngstown, OH, Monday, October 12, 2026 through Monday, October 12, 2026 Local 20 nm from the route, 439 nm along the route · a VIP movement · today · ZOB
  • 6/8587 Youngstown, OH, Monday, October 12, 2026 through Monday, October 12, 2026 Local 20 nm from the route, 439 nm along the route · a VIP movement · today · ZOB
  • 6/4812 El Centro, CA, Wednesday, July 15, 2026 through Tuesday, July 13, 2027 Local 10 nm from the route, at the destination end · security · until 13 July · ZLA

Daylight

Sunset at BOS 6:07 pm EDT (22:07 UTC), at SAN 6:19 pm PDT (01:19 UTC) (civil twilight ends 6:44 pm PDT (01:44 UTC)). At 120 knots the arrival at SAN is after sunset there (6:19 pm PDT (01:19 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
Radar now, the Northeast · loop National Weather Service
Radar now, the central Great Lakes
Radar now, the central Great Lakes · loop National Weather Service
Radar now, the upper Mississippi valley
Radar now, the upper Mississippi valley · loop National Weather Service
Radar, the whole country
Radar, the whole country · loop National Weather Service
Surface analysis now
Surface analysis now Weather Prediction Center
Forecast chart, 12 hours ahead
Forecast chart, 12 hours ahead Weather Prediction Center
Forecast chart, 24 hours ahead
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: General Edward Lawrence Logan International, San Diego International.