Plan a flight · Mon 12:28 am PDT (07:28 UTC)

Ontario International to Williamsport Regional ONT → IPT

1,963 nautical miles (2,259 statute miles) northeast on a straight line, true course 065°, about 053° magnetic at the departure end (variation 12E). At 120 knots that is 11 h 17 min at the quickest height in today's winds (34,000 ft, a 54-knot tailwind), arriving about 2:45 pm EDT (18:45 UTC). Right now ONT is marginal VFR, wind from the north (350°) at 3 knots; IPT is marginal VFR, wind from the west (270°) 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: 1 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 C12C: thunderstorms (a convective SIGMET) up to 25,000 ft, moving from the southwest at 40 knots, until 1:55 am PDT (08:55 UTC). Over the route from 618 to 667 nm out.
as issued
```
WSUS32 KKCI 120655
MKCC WST 120655
CONVECTIVE SIGMET 12C
VALID UNTIL 0855Z
CO NM
FROM 40W PUB-30SSE PUB-30W CIM-50WSW ALS-40W PUB
DMSHG AREA TS MOV FROM 22040KT. TOPS TO FL250.
```
AIRMET TANGO 1W: moderate turbulence below 18,000 ft (due to mountain wave) up to 15,000 ft. Over the first 130 nm of the route.
AIRMET TANGO 2W: moderate turbulence above 18,000 ft from 35,000 ft to 45,000 ft. Over the route from 90 to 618 nm out.
AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 179 to 408 nm out.
AIRMET TANGO 4W: moderate turbulence below 18,000 ft up to 18,000 ft. Over the route from 199 to 757 nm out.
AIRMET ZULU 2C: moderate icing up to 23,000 ft. Near the route, 259 nm along the route.
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 269 to 309 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 568 to 687 nm out.
AIRMET TANGO 4W: moderate turbulence above 18,000 ft from 18,000 ft to 38,000 ft. Over the route from 638 to 737 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 757 to 1305 nm out.
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 last 458 nm of the route.
AIRMET SIERRA 4E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the last 130 nm of the route.
AIRMET TANGO 3W: moderate turbulence above 18,000 ft from 21,000 ft to 33,000 ft. Over the last 70 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 ONT.

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

A321 at 31,000 ft, 49 nm north, 11:41 pm PDT (06:41 UTC): moderate turbulence, remarks: mtw +/-15KT zdvwc. 687 nm along the route, 49 nm north of the line.
as filed, and in English
```
COS UA /OV BRK/TM 0641/FL310/TP A321/TB MOD/RM MTW +/-15KT. ZDVWC
```
Report
a routine report filed through COS
Where
over BRK
Time
06:41 UTC
Height
at 31,000 ft
Aircraft
A321
Turbulence
moderate
Remarks
mtw +/-15KT zdvwc
B38M at 3,000 ft, 5 nm east, 10:47 pm PDT (05:47 UTC): a broken layer from 2,900 ft to 8,000 ft, remarks: BASE030. At the departure end, 5 nm east of the line.
as filed, and in English
```
ONT UA /OV KONT080005/TM 0547/FL030/TP B38M/SK BKN029-TOP080/RM BASE030
```
Report
a routine report filed through ONT
Where
5 nm east (080°) of KONT
Time
05:47 UTC
Height
at 3,000 ft
Aircraft
B38M
Sky
a broken layer from 2,900 ft, tops 8,000 ft
Remarks
BASE030
GLF5 at 3,500 ft, 45 nm west, 9:54 pm PDT (04:54 UTC): overcast above 3,600 ft. At the departure end, 45 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
A321 at 3,300 ft, 4 nm south, 9:59 pm PDT (04:59 UTC): a broken layer above 3,300 ft, remarks: during the descent. At the departure end, 4 nm south 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
PC12 at 11,000 ft, 8 nm south, 11:58 pm PDT (06:58 UTC): light turbulence, no icing, remarks: during the descent arrival KFMN ZDVWC-36. 518 nm along the route, 8 nm south of the line.
as filed, and in English
```
DRO UA /OV DRO/TM 0658/FL110/TP PC12/SK BASE117/TB CONS LGT/IC NEG/RM DURD ARR KFMN. ZDVWC-36
```
Report
a routine report filed through DRO
Where
over DRO
Time
06:58 UTC
Height
at 11,000 ft
Aircraft
PC12
Sky
BASE117
Turbulence
continuous light
Icing
none
Remarks
during the descent arrival KFMN ZDVWC-36
PC12 at 26,000 ft, 34 nm north, 11:27 pm PDT (06:27 UTC): light chop turbulence, remarks: ZDVWC-12. 608 nm along the route, 34 nm north of the line.
as filed, and in English
```
GUC UA /OV HBU090040/TM 0627/FL260/TP PC12/TB OCNL LGT CHOP/RM ZDVWC-12
```
Report
a routine report filed through GUC
Where
40 nm east (090°) of HBU
Time
06:27 UTC
Height
at 26,000 ft
Aircraft
PC12
Turbulence
occasional light chop
Remarks
ZDVWC-12
A320 at 31,000 ft, 19 nm north, 11:58 pm PDT (06:58 UTC): light chop turbulence, remarks: mtw a 10-knot loss of airspeed 100FT zdvwc. 648 nm along the route, 19 nm north of the line.
as filed, and in English
```
PUB UA /OV PUB260040/TM 0658/FL310/TP A320/TB LGT CHOP/RM MTW +/-10KT 100FT. ZDVWC
```
Report
a routine report filed through PUB
Where
40 nm west (260°) of PUB
Time
06:58 UTC
Height
at 31,000 ft
Aircraft
A320
Turbulence
light chop
Remarks
mtw a 10-knot loss of airspeed 100FT zdvwc
A21N at 33,000 ft, 49 nm north, 11:59 pm PDT (06:59 UTC): light chop turbulence, remarks: mtw a 10-knot loss of airspeed 100FT zdvwc. 687 nm along the route, 49 nm north of the line.
as filed, and in English
```
COS UA /OV BRK/TM 0659/FL330/TP A21N/TB LGT CHOP/RM MTW +/-10KT 100FT. ZDVWC
```
Report
a routine report filed through COS
Where
over BRK
Time
06:59 UTC
Height
at 33,000 ft
Aircraft
A21N
Turbulence
light chop
Remarks
mtw a 10-knot loss of airspeed 100FT zdvwc
B739 at 35,000 ft, 10 nm north, 12:05 am PDT (07:05 UTC): no turbulence. 1455 nm along the route, 10 nm north of the line.
as filed, and in English
```
TIP UA /OV RBS010023/TM 0705/FL350/TP B739/TB NEG
```
Report
a routine report filed through TIP
Where
23 nm north (010°) of RBS
Time
07:05 UTC
Height
at 35,000 ft
Aircraft
B739
Turbulence
none
B38M at 29,000 ft, 13 nm south, 9:52 pm PDT (04:52 UTC): no turbulence from 23,000 ft to 29,000 ft. 1455 nm along the route, 13 nm south of the line.
as filed, and in English
```
TIP UA /OV RBS/TM 0452/FL290/TP B38M/TB NEG 230-290
```
Report
a routine report filed through TIP
Where
over RBS
Time
04:52 UTC
Height
at 29,000 ft
Aircraft
B38M
Turbulence
no from 23,000 ft to 29,000 ft
LJ45 at 10,000 ft, 15 nm north, 9:31 pm PDT (04:31 UTC): no turbulence, clear, remarks: ground fog at fwa FV10SM on final runway 14. 1574 nm along the route, 15 nm north 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
B738 at 1,700 ft, 29 nm north, 11:20 pm PDT (06:20 UTC): overcast from 1,700 ft to 2,000 ft, remarks: during the descent. 1654 nm along the route, 29 nm north of the line.
as filed, and in English
```
TOL UA /OV KTOL/TM 0620/FL017/TP B738/SK OVC017-TOP020/RM DURD
```
Report
a routine report filed through TOL
Where
over KTOL
Time
06:20 UTC
Height
at 1,700 ft
Aircraft
B738
Sky
overcast from 1,700 ft, tops 2,000 ft
Remarks
during the descent
B738 at 1,800 ft, 29 nm north, 10:18 pm PDT (05:18 UTC): overcast from 1,800 ft to 2,700 ft, remarks: during the climb. 1654 nm along the route, 29 nm north of the line.
as filed, and in English
```
TOL UA /OV KTOL/TM 0518/FL018/TP B738/SK OVC018-TOP027/RM DURC
```
Report
a routine report filed through TOL
Where
over KTOL
Time
05:18 UTC
Height
at 1,800 ft
Aircraft
B738
Sky
overcast from 1,800 ft, tops 2,700 ft
Remarks
during the climb
B738 at 1,300 ft, 29 nm north, 9:45 pm PDT (04:45 UTC): overcast from 1,300 ft to 3,000 ft, remarks: during the descent. 1654 nm along the route, 29 nm north 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

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 19 forecast points nearest it (ONT, LAS, PRC, BCE, FMN, ALS, PUB, GLD, SLN, MKC, DSM, BRL, SPI, JOT, FWA, CMH, CLE, AGC, PSB). 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	230° at 21 kt	−20 kt		140 kt	14 h 01 min	5:29 pm EDT (21:29 UTC)
5,500 ft	250° at 20 kt	−21 kt	12 °C	141 kt	13 h 55 min	5:23 pm EDT (21:23 UTC)
7,500 ft	250° at 18 kt	−19 kt	11 °C	139 kt	14 h 07 min	5:35 pm EDT (21:35 UTC)
9,500 ft	250° at 16 kt	−18 kt	9 °C	138 kt	14 h 13 min	5:41 pm EDT (21:41 UTC)
11,500 ft	240° at 17 kt	−17 kt	4 °C	137 kt	14 h 20 min	5:48 pm EDT (21:48 UTC)
13,500 ft	240° at 19 kt	−20 kt	0 °C	140 kt	14 h 01 min	5:29 pm EDT (21:29 UTC)
15,500 ft	240° at 22 kt	−23 kt	-4 °C	143 kt	13 h 44 min	5:12 pm EDT (21:12 UTC)
17,500 ft	240° at 25 kt	−26 kt	-8 °C	146 kt	13 h 27 min	4:55 pm EDT (20:55 UTC)
18,000 ft FL180	240° at 26 kt	−27 kt	-9 °C	147 kt	13 h 21 min	4:49 pm EDT (20:49 UTC)
24,000 ft FL240	240° at 33 kt	−35 kt	-20 °C	155 kt	12 h 40 min	4:08 pm EDT (20:08 UTC)
30,000 ft FL300	250° at 44 kt	−47 kt	-31 °C	167 kt	11 h 45 min	3:13 pm EDT (19:13 UTC)
34,000 ft FL340	260° at 51 kt	−54 kt	-38 °C	174 kt	11 h 17 min	2:45 pm EDT (18:45 UTC)
39,000 ft FL390	260° at 46 kt	−49 kt	-48 °C	169 kt	11 h 37 min	3:05 pm EDT (19:05 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
ONT	used from 0 nm out; 25 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°
LAS	used from 100 nm out; 71 nm from the line		210/21 10°	200/18 5°	200/23 -2°	210/49 -14°	210/63 -21°	220/58 -30°	220/61 -35°	210/56 -44°
PRC	used from 199 nm out; 73 nm from the line			210/25 5°	200/30 1°	220/55 -10°	220/61 -21°	220/84 -28°	230/90 -34°	230/73 -45°
BCE	used from 299 nm out; 97 nm from the line				220/27 -1°	210/40 -13°	220/54 -21°	220/64 -30°	220/64 -34°	220/52 -44°
FMN	used from 399 nm out; 66 nm from the line			220/28 9°	220/40 2°	220/53 -10°	220/62 -22°	230/79 -28°	240/91 -34°	230/71 -45°
ALS	used from 548 nm out; 39 nm from the line				230/37 4°	220/54 -9°	230/62 -22°	240/77 -26°	240/74 -33°	230/59 -45°
PUB	used from 648 nm out; 14 nm from the line			230/25 13°	230/32 6°	220/44 -8°	230/49 -21°	240/70 -28°	240/67 -34°	240/58 -46°
GLD	used from 747 nm out; 65 nm from the line		230/49	230/42 15°	220/26 8°	240/18 -7°	230/27 -21°	240/62 -30°	240/61 -35°	250/57 -47°
SLN	used from 897 nm out; 92 nm from the line	210/53	230/41 20°	240/26 14°	230/16 8°	240/25 -7°	240/35 -19°	250/61 -30°	260/65 -38°	260/56 -49°
MKC	used from 1096 nm out; 60 nm from the line	220/44	250/28 18°	250/18 13°	240/12 6°	280/24 -6°	240/34 -18°	260/47 -30°	260/51 -40°	270/58 -50°
DSM	used from 1196 nm out; 80 nm from the line	230/40	250/33 17°	250/18 12°	240/17 5°	260/28 -8°	270/34 -19°	260/41 -33°	260/55 -41°	270/62 -51°
BRL	used from 1245 nm out; 52 nm from the line	230/24	240/29 15°	290/16 10°	280/15 4°	260/23 -7°	260/32 -19°	260/36 -33°	280/48 -41°	280/59 -52°
SPI	used from 1345 nm out; 49 nm from the line	220/21	250/23 16°	260/27 9°	270/14 6°	270/23 -7°	270/31 -19°	270/28 -33°	290/48 -42°	300/55 -52°
JOT	used from 1395 nm out; 57 nm from the line	250/23	270/22 15°	250/16 10°	240/9 4°	280/22 -7°	280/29 -19°	300/29 -34°	290/50 -43°	300/64 -52°
FWA	used from 1494 nm out; 69 nm from the line	300/17	320/20 16°	330/20 10°	340/15 3°	310/27 -8°	320/37 -20°	330/52 -36°	330/65 -43°	330/60 -50°
CMH	used from 1644 nm out; 72 nm from the line	330/15	340/22 14°	340/24 9°	340/23 4°	340/35 -9°	340/49 -20°	340/58 -37°	330/70 -42°	340/55 -47°
CLE	used from 1694 nm out; 26 nm from the line	340/7	010/16 13°	350/18 8°	350/20 3°	340/31 -10°	340/46 -21°	340/54 -37°	330/62 -44°	340/65 -49°
AGC	used from 1793 nm out; 53 nm from the line	350/14	330/20 11°	340/18 8°	330/17 3°	340/22 -11°	340/31 -22°	330/33 -36°	300/34 -41°	300/35 -47°
PSB	used from 1843 nm out; 47 nm from the line		360/13 13°	330/14 7°	300/11 3°	290/12 -11°	240/23 -23°	270/25 -36°	250/34 -40°	250/45 -48°

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
ONT Ontario, CA	departure	marginal VFR Sky: a broken layer at 2,600 feet, overcast at 3,500 feet	from the north (350°) at 3 knots	7 mi	2,600 ft	944 ft	11:53 pm PDT (06:53 UTC)
IFP Bullhead City, AZ	159 nm out, 5 nm east of the line, tower	VFR Sky: a few clouds at 3,100 feet, scattered clouds at 10,000 feet, a broken layer at 12,000 feet	from the south-southwest (210°) at 5 knots	10+ mi	12,000 ft	707 ft	07:10 UTC
GCN Grand Canyon, AZ	289 nm out, 3 nm east of the line, tower	IFR Sky: a broken layer at 800 feet, a broken layer at 1,200 feet, overcast at 3,900 feet	from the south (190°) at 11 knots	10+ mi	800 ft	6,608 ft	07:16 UTC
FMN Farmington, NM	488 nm out, 24 nm south of the line, tower	VFR	from the east (100°) at 3 knots	10+ mi	none	5,506 ft	06:53 UTC
PUB Pueblo, CO	687 nm out, 10 nm northwest of the line, tower	VFR	from the southwest (230°) at 10 knots	10+ mi	none	4,729 ft	06:53 UTC
RCP Stockton, KS	936 nm out, 6 nm northwest of the line	no report just now				1,999 ft
STJ St Joseph, MO	1136 nm out, 14 nm south of the line, tower	VFR	from the south (190°) at 8 knots	10+ mi	none	826 ft	06:53 UTC
EOK Keokuk, IA	1305 nm out, 2 nm west of the line	reported, no category	from the south-southwest (210°) at 5 knots	10+ mi	none	671 ft	07:15 UTC
PIA Peoria, IL	1385 nm out, 2 nm west of the line, tower	VFR	calm	10+ mi	none	660 ft	06:54 UTC
FWA Fort Wayne, IN	1584 nm out, 5 nm southeast of the line, tower	IFR Sky: a few clouds at 30,000 feet Weather: mist, shallow fog	from the south (180°) at 3 knots	2.5 mi	none	814 ft	06:54 UTC
YNG Youngstown/Warren, OH	1793 nm out, 3 nm north of the line, tower	marginal VFR Sky: scattered clouds at 500 feet, a broken layer at 1,200 feet, overcast at 2,400 feet	from the west-northwest (290°) at 3 knots	8 mi	1,200 ft	1,191 ft	06:51 UTC
IPT Williamsport, PA	destination	marginal VFR Sky: overcast at 1,500 feet	from the west (270°) at 4 knots	10+ mi	1,500 ft	528 ft	2:54 am EDT (06:54 UTC)

The highest airport on this list sits at 6,608 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.

At IPT when you get there the forecast at the estimated arrival, 2:45 pm EDT (18:45 UTC)

Wind from the west at 7 knots, visibility more than 6 miles, a broken layer at 2,500 feet marginal VFR

The whole forecast for IPT

From Mon 2:00 am EDT (06:00 UTC): wind light and variable, visibility more than 6 miles, scattered clouds at 800 feet, overcast at 2,000 feet
From Mon 10:00 am EDT (14:00 UTC): wind from the west at 5 knots, visibility more than 6 miles, overcast at 2,000 feet
From Mon 12:00 pm EDT (16:00 UTC): wind from the west at 7 knots, visibility more than 6 miles, a broken layer at 2,500 feet
From Mon 4:00 pm EDT (20:00 UTC): wind from the west at 6 knots, visibility more than 6 miles, scattered clouds at 2,500 feet, a broken layer at 3,500 feet

The forecast for ONT, the departure

From Sun 11:00 pm PDT (06:00 UTC): wind from the west-southwest at 6 knots, visibility more than 6 miles, showers nearby, scattered clouds at 2,500 feet, a broken layer at 5,000 feet
From Mon 2:00 am PDT (09:00 UTC): wind from the west-southwest at 4 knots, visibility more than 6 miles, showers nearby, a broken layer at 2,500 feet, a broken layer at 5,000 feet
From Mon 11:00 am PDT (18:00 UTC): wind from the west-southwest at 5 knots, visibility more than 6 miles, a broken layer at 5,000 feet
From Mon 2:00 pm PDT (21:00 UTC): wind from the west-southwest at 11 knots, gusting to 18, visibility more than 6 miles, a broken layer at 5,000 feet
From Mon 8:00 pm PDT (03:00 UTC): wind from the west-southwest at 9 knots, visibility more than 6 miles, a broken layer at 6,000 feet

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

4/3635 DISNEYLAND THEME PARK, ANAHEIM,, CA 19 nm from the route, at the departure end · security · ZLA
6/8891 Bullhead City, AZ, Wednesday, October 14, 2026 Local on the route, 159 nm along the route · a VIP movement · starts Wednesday 14 October · ZLA
6/8587 Youngstown, OH, Monday, October 12, 2026 through Monday, October 12, 2026 Local on the route, 1763 nm along the route · a VIP movement · today · ZOB
6/8829 Youngstown, OH, Monday, October 12, 2026 through Monday, October 12, 2026 Local on the route, 1783 nm along the route · a VIP movement · today · ZOB
6/8888 Youngstown, OH, Monday, October 12, 2026 through Monday, October 12, 2026 Local 1 nm from the route, 1793 nm along the route · security · today · ZOB

Daylight

Sunset at ONT 6:18 pm PDT (01:18 UTC), at IPT 6:31 pm EDT (22:31 UTC) (civil twilight ends 6:59 pm EDT (22:59 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 now, the southern Rockies · loop National Weather Service

Radar now, the southern Plains · 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: Ontario International, Williamsport Regional.