Plan a flight · Sun 6:06 pm PDT (01:06 UTC)

San Bernardino International to Portsmouth International AT Pease SBD → PSM

2,214 nautical miles (2,548 statute miles) northeast on a straight line, true course 062°, about 049° magnetic at the departure end (variation 13E). At 120 knots that is 12 h 43 min at the quickest height in today's winds (39,000 ft, a 54-knot tailwind), arriving about 9:49 am EDT (13:49 UTC). Right now SBD is VFR, wind from the south (190°) at 5 knots; PSM is VFR, wind from the south (170°) 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: 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

AIRMET TANGO 1W: moderate turbulence below 18,000 ft (due to mountain wave) up to 12,000 ft. Over the first 120 nm of the route.
AIRMET SIERRA 6E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the first 20 nm of the route.
AIRMET TANGO 4W: moderate turbulence above 18,000 ft from 18,000 ft to 36,000 ft. Over the route from 30 to 708 nm out.
AIRMET ZULU 3C: moderate icing up to 22,000 ft. Over the route from 40 to 359 nm out.
AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 120 to 578 nm out.
AIRMET TANGO 4W: moderate turbulence below 18,000 ft up to 18,000 ft. Over the route from 130 to 698 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 219 to 299 nm out.
AIRMET TANGO 3W: strong surface winds (30 knots or more) (due to sustained surface winds greater than 30 knots). Over the route from 379 to 429 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 469 to 549 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 route from 1636 to 1696 nm out.
AIRMET TANGO 2W: moderate turbulence below 18,000 ft up to 18,000 ft. Over the last 349 nm of the route.
AIRMET ZULU 1C: moderate icing up to 24,000 ft. Over the last 329 nm of the route.
AIRMET TANGO 3W: moderate turbulence above 18,000 ft from 21,000 ft to 33,000 ft. Over the last 329 nm of the route.
AIRMET SIERRA 3E: low cloud or poor visibility (IFR conditions) (due to ceilings below 1,000 ft, visibility below 3 miles, precipitation, mist). Near the route, 1945 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). Near the route, 1955 nm along the route.
AIRMET SIERRA 4E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 1965 to 2144 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 SBD.

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

urgent GLF6 at 45,000 ft, 13 nm south, 4:57 pm PDT (23:57 UTC): severe turbulence, remarks: a/c had to exit auto pilot, 45 degree pitch-zdv. 439 nm along the route, 13 nm south of the line.
as filed, and in English
```
FMN UUA /OV RSK280050/TM 2357/FL450/TP GLF6/TB SEV/RM A/C HAD TO EXIT AUTO PILOT, 45 DEGREE PITCH-ZDV
```
Report
an urgent report filed through FMN
Where
50 nm west (280°) of RSK
Time
23:57 UTC
Height
at 45,000 ft
Aircraft
GLF6
Turbulence
severe
Remarks
a/c had to exit auto pilot, 45 degree pitch-zdv
B38M at 14,000 ft, 6 nm northwest, 5:13 pm PDT (00:13 UTC): moderate turbulence, light rime icing, 8 °C. At the departure end, 6 nm northwest of the line.
as filed, and in English
```
ONT UA /OV ONT053034/TM 0013/FL140/TP B38M/TA 08/TB MODERATE TURBULENCE/IC LIGHT RIME ICE 190 - 170
```
Report
a routine report filed through ONT
Where
34 nm northeast (053°) of ONT
Time
00:13 UTC
Height
at 14,000 ft
Aircraft
B38M
Temperature
8 °C
Turbulence
moderate turbulence
Icing
light rime ice at 19,000 ft at 17,000 ft
GLF4 at 43,000 ft, 11 nm south, 5:15 pm PDT (00:15 UTC): moderate turbulence, remarks: zdvwc. 449 nm along the route, 11 nm south of the line.
as filed, and in English
```
FMN UA /OV RSK290045/TM 0015/FL430/TP GLF4/TB CONS MOD/RM ZDVWC
```
Report
a routine report filed through FMN
Where
45 nm west (290°) of RSK
Time
00:15 UTC
Height
at 43,000 ft
Aircraft
GLF4
Turbulence
continuous moderate
Remarks
zdvwc
E545 at 45,000 ft, 47 nm south, 3:29 pm PDT (22:29 UTC): moderate chop turbulence, remarks: zdvwc. 469 nm along the route, 47 nm south of the line.
as filed, and in English
```
FMN UA /OV RSK2950301/TM 2229/FL450/TP E545/TB MOD CHOP/RM ZDVWC
```
Report
a routine report filed through FMN
Where
301 nm southwest (950°) of RSK2
Time
22:29 UTC
Height
at 45,000 ft
Aircraft
E545
Turbulence
moderate chop
Remarks
zdvwc
GLF4 at 43,000 ft, 9 nm southeast, 5:09 pm PDT (00:09 UTC): moderate chop turbulence, remarks: ZDVWC-38. 499 nm along the route, 9 nm southeast of the line.
as filed, and in English
```
FMN UA /OV RSK360050/TM 0009/FL430/TP GLF4/TB MOD CHOP/RM ZDVWC-38
```
Report
a routine report filed through FMN
Where
50 nm north (360°) of RSK
Time
00:09 UTC
Height
at 43,000 ft
Aircraft
GLF4
Turbulence
moderate chop
Remarks
ZDVWC-38
UAL2238 at 38,000 ft, 4 nm north, 4:44 pm PDT (23:44 UTC): moderate turbulence, wind 244° at 64 knots. 559 nm along the route, 4 nm north of the line.
as filed, and in English
```
ARP UAL2238 3807N 10649W 2344 F380 244/064KT TB CONT MOD TURB IC
```
Report
a routine report filed through ARP
GLF5 at 45,000 ft, 30 nm northwest, 3:44 pm PDT (22:44 UTC): moderate turbulence, remarks: ZDVWC-46. 678 nm along the route, 30 nm northwest of the line.
as filed, and in English
```
COS UA /OV COS350025/TM 2244/FL450/TP GLF5/TB MOD /RM ZDVWC-46
```
Report
a routine report filed through COS
Where
25 nm north (350°) of COS
Time
22:44 UTC
Height
at 45,000 ft
Aircraft
GLF5
Turbulence
moderate
Remarks
ZDVWC-46
A320 at 33,000 ft, 15 nm south, 5:36 pm PDT (00:36 UTC): moderate turbulence above 33,000 ft, remarks: zob. 1586 nm along the route, 15 nm south of the line.
as filed, and in English
```
JXN UA /OV JXN280030/TM 0036/FL330/TP A320/TB OCNL MOD 330/RM ZOB
```
Report
a routine report filed through JXN
Where
30 nm west (280°) of JXN
Time
00:36 UTC
Height
at 33,000 ft
Aircraft
A320
Turbulence
occasional moderate at 33,000 ft
Remarks
zob
E170 at 25,000 ft, 7 nm south, 3:37 pm PDT (22:37 UTC): moderate turbulence above 25,000 ft, remarks: zob. 1875 nm along the route, 7 nm south of the line.
as filed, and in English
```
BUF UA /OV BUF120010/TM 2237/FL250/TP E170/TB MOD 250/RM ZOB
```
Report
a routine report filed through BUF
Where
10 nm southeast (120°) of BUF
Time
22:37 UTC
Height
at 25,000 ft
Aircraft
E170
Turbulence
moderate at 25,000 ft
Remarks
zob
DH8D at 19,000 ft, 5 nm north, 4:35 pm PDT (23:35 UTC): moderate chop turbulence, remarks: zob. 1915 nm along the route, 5 nm north of the line.
as filed, and in English
```
ROC UA /OV ROC/TM 2335/FL190/TP DH8D/TB CONS MOD CHOP/RM ZOB
```
Report
a routine report filed through ROC
Where
over ROC
Time
23:35 UTC
Height
at 19,000 ft
Aircraft
DH8D
Turbulence
continuous moderate chop
Remarks
zob
CRJ7 at 33,000 ft, 35 nm south, 3:31 pm PDT (22:31 UTC): moderate turbulence. 1965 nm along the route, 35 nm south of the line.
as filed, and in English
```
ITH UA /OV ITH/TM 2231/FL330/TP CRJ7/TB MOD
```
Report
a routine report filed through ITH
Where
over ITH
Time
22:31 UTC
Height
at 33,000 ft
Aircraft
CRJ7
Turbulence
moderate
E75L at 31,000 ft, 35 nm south, 3:27 pm PDT (22:27 UTC): moderate turbulence. 1965 nm along the route, 35 nm south of the line.
as filed, and in English
```
ITH UA /OV ITH/TM 2227/FL310/TP E75L/TB CONS MOD
```
Report
a routine report filed through ITH
Where
over ITH
Time
22:27 UTC
Height
at 31,000 ft
Aircraft
E75L
Turbulence
continuous moderate
E75 at 34,000 ft, 4 nm south, 4:15 pm PDT (23:15 UTC): moderate turbulence. 2025 nm along the route, 4 nm south of the line.
as filed, and in English
```
RME UA /OV UCA/TM 2315/FL340/TP E75/TB CONS MOD
```
Report
a routine report filed through RME
Where
over UCA
Time
23:15 UTC
Height
at 34,000 ft
Aircraft
E75
Turbulence
continuous moderate
A21N at 35,000 ft, 4 nm south, 3:57 pm PDT (22:57 UTC): moderate turbulence. 2025 nm along the route, 4 nm south of the line.
as filed, and in English
```
RME UA /OV UCA/TM 2257/FL350/TP A21N/TB CONS MOD
```
Report
a routine report filed through RME
Where
over UCA
Time
22:57 UTC
Height
at 35,000 ft
Aircraft
A21N
Turbulence
continuous moderate

16 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 21 forecast points nearest it (ONT, BLH, LAS, PRC, BCE, FMN, ALS, PUB, GLD, GRI, OMA, DSM, BRL, DBQ, JOT, MKG, CLE, BUF, SYR, ALB, BOS). 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 15 kt	−6 kt		126 kt	17 h 34 min	2:40 pm EDT (18:40 UTC)
5,500 ft	210° at 16 kt	−12 kt	16 °C	132 kt	16 h 46 min	1:52 pm EDT (17:52 UTC)
7,500 ft	230° at 17 kt	−15 kt	11 °C	135 kt	16 h 24 min	1:30 pm EDT (17:30 UTC)
9,500 ft	240° at 16 kt	−16 kt	9 °C	136 kt	16 h 17 min	1:23 pm EDT (17:23 UTC)
11,500 ft	240° at 18 kt	−18 kt	4 °C	138 kt	16 h 03 min	1:09 pm EDT (17:09 UTC)
13,500 ft	240° at 21 kt	−21 kt	0 °C	141 kt	15 h 42 min	12:48 pm EDT (16:48 UTC)
15,500 ft	240° at 23 kt	−24 kt	-4 °C	144 kt	15 h 22 min	12:28 pm EDT (16:28 UTC)
17,500 ft	240° at 26 kt	−26 kt	-8 °C	146 kt	15 h 10 min	12:16 pm EDT (16:16 UTC)
18,000 ft FL180	240° at 27 kt	−27 kt	-9 °C	147 kt	15 h 04 min	12:10 pm EDT (16:10 UTC)
24,000 ft FL240	240° at 32 kt	−32 kt	-20 °C	152 kt	14 h 34 min	11:40 am EDT (15:40 UTC)
30,000 ft FL300	240° at 44 kt	−43 kt	-32 °C	163 kt	13 h 35 min	10:41 am EDT (14:41 UTC)
34,000 ft FL340	250° at 52 kt	−52 kt	-40 °C	172 kt	12 h 52 min	9:58 am EDT (13:58 UTC)
39,000 ft FL390	250° at 54 kt	−54 kt	-49 °C	174 kt	12 h 43 min	9:49 am EDT (13:49 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
ONT	used from 0 nm out; 43 nm from the line	230/11	200/17 6°	230/27 4°	230/32 -2°	210/39 -12°	220/51 -20°	220/48 -29°	210/51 -34°	210/52 -44°
BLH	used from 50 nm out; 86 nm from the line	230/22	210/24 11°	230/23 5°	230/26 0°	220/38 -10°	230/52 -19°	220/58 -28°	220/69 -34°	220/59 -45°
LAS	used from 100 nm out; 62 nm from the line		200/25 11°	230/22 5°	240/25 -1°	220/37 -12°	220/44 -21°	210/52 -27°	210/60 -34°	220/58 -44°
PRC	used from 199 nm out; 78 nm from the line			200/36 6°	210/46 0°	220/60 -10°	220/75 -19°	220/66 -26°	230/70 -33°	230/59 -45°
BCE	used from 299 nm out; 83 nm from the line				210/47 0°	200/50 -12°	220/31 -23°	220/56 -26°	220/58 -35°	230/58 -45°
FMN	used from 399 nm out; 63 nm from the line			220/25 13°	220/28 4°	210/51 -9°	220/59 -21°	230/78 -30°	230/77 -36°	230/66 -46°
ALS	used from 549 nm out; 52 nm from the line				210/32 5°	230/48 -8°	230/49 -20°	230/78 -30°	240/74 -36°	240/61 -47°
PUB	used from 598 nm out; 49 nm from the line			210/24 16°	210/28 8°	230/43 -8°	240/42 -21°	240/77 -30°	240/72 -36°	250/51 -47°
GLD	used from 748 nm out; 39 nm from the line		190/29	200/30 15°	240/23 8°	250/39 -7°	230/39 -19°	230/57 -31°	240/67 -39°	250/62 -49°
GRI	used from 898 nm out; 74 nm from the line		210/31 19°	240/21 14°	240/17 6°	260/27 -7°	260/34 -18°	240/45 -32°	250/56 -40°	260/62 -51°
OMA	used from 1047 nm out; 36 nm from the line	190/34	230/34 19°	250/25 12°	250/18 6°	250/22 -7°	250/28 -19°	260/34 -32°	260/39 -41°	280/56 -51°
DSM	used from 1147 nm out; 30 nm from the line	200/32	240/27 17°	260/19 10°	260/16 5°	260/19 -7°	240/22 -19°	270/20 -32°	270/38 -42°	290/58 -53°
BRL	used from 1247 nm out; 64 nm from the line	200/20	250/21 16°	240/22 10°	260/20 5°	270/16 -7°	290/22 -18°	320/41 -34°	320/56 -43°	310/68 -53°
DBQ	used from 1297 nm out; 39 nm from the line	220/23	240/22 16°	240/24 10°	260/18 5°	270/16 -8°	290/27 -19°	310/42 -35°	320/55 -44°	300/71 -52°
JOT	used from 1396 nm out; 43 nm from the line	230/11	290/12 16°	300/19 10°	320/19 4°	300/17 -9°	330/31 -20°	320/49 -37°	320/53 -45°	320/67 -49°
MKG	used from 1496 nm out; 50 nm from the line	250/5	320/10 15°	310/19 9°	320/21 3°	310/23 -10°	330/37 -22°	330/51 -38°	320/44 -47°	300/60 -49°
CLE	used from 1646 nm out; 98 nm from the line	340/5	320/13 14°	300/12 8°	310/10 2°	310/14 -10°	340/14 -23°	320/27 -35°	260/28 -40°	250/36 -48°
BUF	used from 1745 nm out; 97 nm from the line	170/19	L/V 10°	040/9 6°	220/8 2°	230/15 -11°	220/33 -22°	220/47 -35°	230/55 -41°	230/56 -50°
SYR	used from 1945 nm out; 13 nm from the line	160/17	200/22 10°	250/10 6°	L/V 1°	270/11 -11°	220/25 -20°	220/66 -36°	230/89 -42°	240/74 -51°
ALB	used from 2045 nm out; 26 nm from the line	160/27	190/16 9°	200/29 7°	230/21 3°	240/24 -9°	240/43 -19°	230/65 -33°	240/91 -42°	230/99 -53°
BOS	used from 2144 nm out; 58 nm from the line	160/27	190/23 9°	260/20 7°	260/32 1°	250/48 -7°	240/56 -17°	240/59 -33°	250/75 -43°	250/94 -55°

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
SBD San Bernardino, CA	departure	VFR Sky: a broken layer at 3,600 feet, overcast at 5,000 feet	from the south (190°) at 5 knots	10+ mi	3,600 ft	1,159 ft	5:55 pm PDT (00:55 UTC)
IFP Bullhead City, AZ	150 nm out, 5 nm south of the line, tower	VFR Sky: a broken layer at 7,000 feet, a broken layer at 12,000 feet	from the south (190°) at 11 knots	10+ mi	7,000 ft	707 ft	00:55 UTC
GCN Grand Canyon, AZ	269 nm out, 14 nm southeast of the line, tower	IFR Sky: a broken layer at 500 feet, overcast at 1,000 feet Weather: mist	from the southwest (230°) at 17 knots, gusting to 25	5 mi	500 ft	6,608 ft	00:54 UTC
CEZ Cortez, CO	459 nm out, 9 nm southeast of the line	VFR Sky: a few clouds at 7,500 feet	from the south-southwest (210°) at 14 knots, gusting to 20	10+ mi	none	5,917 ft	00:53 UTC
COS Colorado Springs, CO	668 nm out, 6 nm northwest of the line, tower	VFR Sky: a few clouds at 7,000 feet, a broken layer at 10,000 feet, a broken layer at 17,000 feet, a broken layer at 20,000 feet	from the west-southwest (240°) at 14 knots, gusting to 25	10+ mi	10,000 ft	6,187 ft	00:54 UTC
LNK Lincoln, NE	1057 nm out, 9 nm northwest of the line, tower	VFR	from the south (170°) at 10 knots	10+ mi	none	1,218 ft	00:54 UTC
DSM Des Moines, IA	1197 nm out, 13 nm north of the line, tower	VFR Sky: a broken layer at 20,000 feet	from the south (170°) at 10 knots	10+ mi	20,000 ft	957 ft	00:54 UTC
PWK Chicago/Prospect Heights/Wheeling, IL	1456 nm out, 6 nm southeast of the line, tower	VFR Sky: a few clouds at 7,000 feet, a few clouds at 10,000 feet	from the southeast (140°) at 3 knots	10+ mi	none	644 ft	00:52 UTC
PTK Pontiac, MI	1656 nm out, 4 nm east of the line, tower	marginal VFR Sky: a few clouds at 500 feet, overcast at 1,600 feet	calm	10+ mi	1,600 ft	980 ft	00:53 UTC
SYR Syracuse, NY	1985 nm out, 3 nm northwest of the line, tower	VFR Sky: a few clouds at 700 feet, a broken layer at 5,500 feet, overcast at 11,000 feet Weather: light rain	from the east-northeast (060°) at 7 knots	10+ mi	5,500 ft	421 ft	00:54 UTC
RME Rome, NY	2015 nm out, 8 nm north of the line, tower	marginal VFR Sky: a broken layer at 1,600 feet, a broken layer at 5,500 feet, overcast at 9,000 feet Weather: light rain	from the east (090°) at 6 knots	10+ mi	1,600 ft	504 ft	00:53 UTC
PSM Portsmouth, NH	destination	VFR Sky: scattered clouds at 5,500 feet, a broken layer at 11,000 feet, overcast at 20,000 feet Weather: light rain	from the south (170°) at 4 knots	7 mi	11,000 ft	100 ft	7:55 pm EDT (23:55 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 PSM when you get there the forecast at the estimated arrival, 9:49 am EDT (13:49 UTC)

Wind from the northwest at 6 knots, visibility more than 6 miles, a broken layer at 2,500 feet, overcast at 6,000 feet marginal VFR

The whole forecast for PSM

From Sun 8:00 pm EDT (00:00 UTC): wind calm, visibility more than 6 miles, light rain, a broken layer at 9,000 feet, overcast at 20,000 feet
From Sun 10:00 pm EDT (02:00 UTC): wind light and variable, visibility 5 miles, light rain, mist, overcast at 900 feet
From Mon 12:00 am EDT (04:00 UTC): wind light and variable, visibility 3 miles, light rain, overcast at 500 feet
From Mon 9:00 am EDT (13:00 UTC): wind from the northwest at 6 knots, visibility more than 6 miles, a broken layer at 2,500 feet, overcast at 6,000 feet
From Mon 12:00 pm EDT (16:00 UTC): wind from the west-northwest at 5 knots, visibility more than 6 miles, a broken layer at 25,000 feet

The forecast for SBD, the departure

From Sun 5:00 pm PDT (00:00 UTC): wind from the south at 8 knots, visibility more than 6 miles, scattered clouds at 3,000 feet, overcast at 5,000 feet
From Mon 12:00 am PDT (07:00 UTC): wind from the south at 5 knots, visibility more than 6 miles, showers nearby, a broken layer at 2,500 feet, a broken layer at 4,000 feet
From Mon 10:00 am PDT (17:00 UTC): wind light and variable, visibility more than 6 miles, a few clouds at 3,000 feet, a broken layer at 5,000 feet

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

6/8891 Bullhead City, AZ, Wednesday, October 14, 2026 Local on the route, 140 nm along the route · a VIP movement · starts Wednesday 14 October · ZLA
6/8784 LAKE GEORGE, CO, Sunday, October 11, 2026 through Tuesday, October 13, 2026 UTC 24 nm from the route, 638 nm along the route · a hazard on the ground (fire-fighting, a chemical spill, rescue work) · until 13 October · ZDV
6/8770 COLORADO SPRINGS, CO, Saturday, October 10, 2026 through Monday, October 12, 2026 UTC 19 nm from the route, 658 nm along the route · a hazard on the ground (fire-fighting, a chemical spill, rescue work) · until 12 October · ZDV

Daylight

Sunset at SBD 6:18 pm PDT (01:18 UTC), at PSM 6:05 pm EDT (22:05 UTC) (civil twilight ends 6:34 pm EDT (22:34 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 northern Rockies · 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: San Bernardino International, Portsmouth International AT Pease.