Plan a flight · Mon 8:51 am PDT (15:51 UTC)

San Francisco International to Robert Gray Army Airfield SFO → GRK

1,274 nautical miles (1,467 statute miles) east on a straight line, true course 101°, about 087° magnetic at the departure end (variation 14E). At 120 knots that is 8 h 13 min at the quickest height in today's winds (34,000 ft, a 35-knot tailwind), arriving about 7:04 pm CDT (00:04 UTC), after sunset at the destination. 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 above 18,000 ft from 18,000 ft to 39,000 ft. Over the first 229 nm of the route.
AIRMET SIERRA 2E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 119 to 169 nm out.
AIRMET TANGO 1W: moderate turbulence below 18,000 ft (due to mountain wave) up to 10,000 ft. Over the route from 229 to 309 nm out.
AIRMET ZULU 2C: moderate icing up to 23,000 ft. Near the route, 358 nm along the route.
AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 408 to 657 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 428 to 538 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 468 to 807 nm out.
AIRMET TANGO 4W: moderate turbulence below 18,000 ft (due to mountain wave) up to 12,000 ft. Over the route from 468 to 777 nm out.
AIRMET TANGO 4W: 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 518 to 647 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 SFO.

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

B38M at 17,000 ft, 16 nm south, 8:20 am PDT (15:20 UTC): moderate rime icing, 0 °C, remarks: during the descent from 17,000 ft to 15,000 ft coktl star. 329 nm along the route, 16 nm south of the line.
as filed, and in English
```
LAS UA /OV LAS265027/TM 1520/FL170/TP B38M/TA 00/IC MOD RIME/RM DURD 170-150 COKTL STAR
```
Report
a routine report filed through LAS
Where
27 nm west (265°) of LAS
Time
15:20 UTC
Height
at 17,000 ft
Aircraft
B38M
Temperature
0 °C
Icing
moderate rime
Remarks
during the descent from 17,000 ft to 15,000 ft coktl star
B789 at 39,000 ft, 40 nm northwest, 6:37 am PDT (13:37 UTC): light to moderate turbulence, remarks: entered by zoa fdcs. At the departure end, 40 nm northwest of the line.
as filed, and in English
```
STS UA /OV PYE218013/TM 1337/FL390/TP B789/TB LGT-MOD/RM ENTERED BY ZOA FDCS
```
Report
a routine report filed through STS
Where
13 nm southwest (218°) of PYE
Time
13:37 UTC
Height
at 39,000 ft
Aircraft
B789
Turbulence
light to moderate
Remarks
entered by zoa fdcs
B739 at 36,000 ft, 27 nm north, 7:39 am PDT (14:39 UTC): no turbulence. At the departure end, 27 nm north of the line.
as filed, and in English
```
IND UA /OV SCK/TM 1439/FL360/TP B739/TB NEG
```
Report
a routine report filed through IND
Where
over SCK
Time
14:39 UTC
Height
at 36,000 ft
Aircraft
B739
Turbulence
none
S22T at 1,000 ft, 14 nm north, 8:28 am PDT (15:28 UTC): remarks: bases 3,000 ft. 70 nm along the route, 14 nm north of the line.
as filed, and in English
```
MOD UA /OV KMOD16002/TM 1528/FL010/TP S22T/RM BASES 030
```
Report
a routine report filed through MOD
Where
KMOD16002
Time
15:28 UTC
Height
at 1,000 ft
Aircraft
S22T
Remarks
bases 3,000 ft
PA46 at 1,100 ft, 14 nm north, 7:37 am PDT (14:37 UTC): a broken layer above 2,500 ft, remarks: bases 2,500 ft. 70 nm along the route, 14 nm north of the line.
as filed, and in English
```
MOD UA /OV KMOD18001/TM 1437/FL011/TP PA46/SK BKN025/RM BASES 025
```
Report
a routine report filed through MOD
Where
KMOD18001
Time
14:37 UTC
Height
at 1,100 ft
Aircraft
PA46
Sky
a broken layer from 2,500 ft
Remarks
bases 2,500 ft
B738 at 16,000 ft, 13 nm southwest, 6:10 am PDT (13:10 UTC): light rime icing, -12 °C, remarks: from 14,000 ft to 16,000 ft. 339 nm along the route, 13 nm southwest of the line.
as filed, and in English
```
LAS UA /OV LAS270022/TM 1310/FL160/TP B738/TA M12/IC LGT RIME/RM 140-160
```
Report
a routine report filed through LAS
Where
22 nm west (270°) of LAS
Time
13:10 UTC
Height
at 16,000 ft
Aircraft
B738
Temperature
−12 °C
Icing
light rime
Remarks
from 14,000 ft to 16,000 ft
B38M at 16,000 ft, 18 nm southwest, 6:06 am PDT (13:06 UTC): light rime icing, -2 °C, remarks: from 13,000 ft to 16,000 ft. 339 nm along the route, 18 nm southwest of the line.
as filed, and in English
```
LAS UA /OV LAS260025/TM 1306/FL160/TP B38M/TA M02/IC LGT RIME/RM 130-160
```
Report
a routine report filed through LAS
Where
25 nm west (260°) of LAS
Time
13:06 UTC
Height
at 16,000 ft
Aircraft
B38M
Temperature
−2 °C
Icing
light rime
Remarks
from 13,000 ft to 16,000 ft
P28A at 5,400 ft, 2 nm west, 7:40 am PDT (14:40 UTC): no turbulence. 348 nm along the route, 2 nm west of the line.
as filed, and in English
```
VGT UA /OV LAS316017/TM 1440/FL054/TP P28A/SK BASES 080/TB NEG
```
Report
a routine report filed through VGT
Where
17 nm northwest (316°) of LAS
Time
14:40 UTC
Height
at 5,400 ft
Aircraft
P28A
Sky
bases 8,000 ft
Turbulence
none
C172 at 3,000 ft, 7 nm southwest, 7:32 am PDT (14:32 UTC): no turbulence. 358 nm along the route, 7 nm southwest of the line.
as filed, and in English
```
VGT UA /OV LAS335008/TM 1432/FL030/TP C172/TB NEG
```
Report
a routine report filed through VGT
Where
8 nm northwest (335°) of LAS
Time
14:32 UTC
Height
at 3,000 ft
Aircraft
C172
Turbulence
none
B737 at 16,000 ft, 17 nm north, 6:37 am PDT (13:37 UTC): -10 °C, remarks: produced by skypath. 398 nm along the route, 17 nm north of the line.
as filed, and in English
```
LSV UA /OV MMM156023 /TM 1337 /FL160 /TP B737 /TA M10 /IC TRACE-LGT-RIME /RM PRODUCED BY SKYPATH
```
Report
a routine report filed through LSV
Where
23 nm southeast (156°) of MMM
Time
13:37 UTC
Height
at 16,000 ft
Aircraft
B737
Temperature
−10 °C
Icing
trace-lgt-rime
Remarks
produced by skypath
C525 at 12,000 ft, 50 nm north, 7:44 am PDT (14:44 UTC): light to moderate turbulence. 797 nm along the route, 50 nm north of the line.
as filed, and in English
```
ABQ UA /OV ABQ096028/TM 1444/FL120/TP C525/TB LGT-MOD
```
Report
a routine report filed through ABQ
Where
28 nm east (096°) of ABQ
Time
14:44 UTC
Height
at 12,000 ft
Aircraft
C525
Turbulence
light to moderate
B737 at 37,000 ft, 23 nm southwest, 6:43 am PDT (13:43 UTC): light chop turbulence, remarks: ZFW82. 986 nm along the route, 23 nm southwest of the line.
as filed, and in English
```
HOB UA /OV HOB/TM 1343/FL370/TP B737/TB OCNL LGT CHOP/RM ZFW82
```
Report
a routine report filed through HOB
Where
over HOB
Time
13:43 UTC
Height
at 37,000 ft
Aircraft
B737
Turbulence
occasional light chop
Remarks
ZFW82
B738 at 36,000 ft, 4 nm west, 7:14 am PDT (14:14 UTC): light chop turbulence above 36,000 ft, remarks: ZFW82. 1075 nm along the route, 4 nm west of the line.
as filed, and in English
```
BPG UA /OV BGS/TM 1414/FL360/TP B738/TB OCNL LGT CHOP FL 360/RM ZFW82
```
Report
a routine report filed through BPG
Where
over BGS
Time
14:14 UTC
Height
at 36,000 ft
Aircraft
B738
Turbulence
occasional light chop flight level at 36,000 ft
Remarks
ZFW82
CRJ7 at 3,500 ft, 40 nm southwest, 8:23 am PDT (15:23 UTC): overcast above 3,500 ft, remarks: during the descent runway 18. 1145 nm along the route, 40 nm southwest of the line.
as filed, and in English
```
SJT UA /OV KSJT/TM 1523/FL035/TP CRJ7/SK OVC035/RM DURD RWY 18
```
Report
a routine report filed through SJT
Where
over KSJT
Time
15:23 UTC
Height
at 3,500 ft
Aircraft
CRJ7
Sky
overcast from 3,500 ft
Remarks
during the descent runway 18

4 more routine reports are on the map.

Winds aloft along the route, and the time en route the forecast for use 14:00–21:00 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 10 forecast points nearest it (SFO, FAT, BIH, LAS, PRC, ABQ, ROW, LBB, ABI, CLL). A plus sign is a headwind, a minus sign a tailwind.

Height	Average wind	Head- or tailwind	Temperature	Ground speed	Time en route	Arrival
5,500 ft	220° at 11 kt	−4 kt	14 °C	124 kt	10 h 16 min	9:07 pm CDT (02:07 UTC)
7,500 ft	210° at 17 kt	−3 kt	8 °C	123 kt	10 h 21 min	9:12 pm CDT (02:12 UTC)
9,500 ft	210° at 18 kt	−3 kt	6 °C	123 kt	10 h 21 min	9:12 pm CDT (02:12 UTC)
11,500 ft	210° at 23 kt	−4 kt	2 °C	124 kt	10 h 16 min	9:07 pm CDT (02:07 UTC)
13,500 ft	220° at 26 kt	−7 kt	-2 °C	127 kt	10 h 02 min	8:53 pm CDT (01:53 UTC)
15,500 ft	220° at 29 kt	−11 kt	-5 °C	131 kt	9 h 44 min	8:35 pm CDT (01:35 UTC)
17,500 ft	230° at 32 kt	−15 kt	-8 °C	135 kt	9 h 26 min	8:17 pm CDT (01:17 UTC)
18,000 ft FL180	230° at 33 kt	−16 kt	-9 °C	136 kt	9 h 22 min	8:13 pm CDT (01:13 UTC)
24,000 ft FL240	230° at 42 kt	−22 kt	-20 °C	142 kt	8 h 58 min	7:49 pm CDT (00:49 UTC)
30,000 ft FL300	230° at 55 kt	−29 kt	-30 °C	149 kt	8 h 33 min	7:24 pm CDT (00:24 UTC)
34,000 ft FL340	230° at 60 kt	−35 kt	-38 °C	155 kt	8 h 13 min	7:04 pm CDT (00:04 UTC)
39,000 ft FL390	230° at 60 kt	−35 kt	-48 °C	155 kt	8 h 13 min	7:04 pm CDT (00:04 UTC)

Based on data from the 12th at 12:00 UTC; valid on the 12th at 18:00 UTC for use 14:00 to 21:00 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	010/6	360/13 5°	360/17 -3°	350/39 -2°	350/56 -11°	350/57 -24°	350/59 -40°	340/50 -46°	320/30 -47°
FAT	used from 50 nm out; 65 nm from the line	L/V	170/5 2°	130/10 -4°	L/V -7°	350/60 -11°	340/62 -23°	320/36 -38°	270/25 -41°	250/32 -44°
BIH	used from 149 nm out; 29 nm from the line		L/V	340/7 -3°	L/V -8°	250/15 -17°	330/30 -24°	270/23 -34°	230/35 -39°	230/39 -44°
LAS	used from 249 nm out; 86 nm from the line		220/15 7°	210/23 2°	200/32 -4°	200/43 -14°	210/64 -23°	210/78 -32°	220/81 -38°	220/80 -45°
PRC	used from 448 nm out; 70 nm from the line			200/38 5°	200/44 -1°	210/72 -11°	220/78 -20°	220/85 -29°	230/99 -36°	230/105 -47°
ABQ	used from 647 nm out; 116 nm from the line			200/19 9°	220/32 3°	230/52 -7°	220/67 -20°	230/86 -26°	230/87 -36°	230/87 -49°
ROW	used from 846 nm out; 39 nm from the line		230/6	220/20 13°	210/37 7°	220/48 -6°	220/52 -16°	230/65 -27°	230/67 -37°	240/64 -49°
LBB	used from 996 nm out; 62 nm from the line		240/21 20°	230/20 15°	210/19 8°	230/39 -6°	230/48 -16°	240/57 -27°	250/51 -37°	240/45 -50°
ABI	used from 1095 nm out; 49 nm from the line		210/22 19°	210/14 15°	210/19 8°	240/17 -4°	240/31 -15°	240/35 -27°	260/30 -37°	260/18 -51°
CLL	used from 1245 nm out; 96 nm from the line	180/21	200/24 17°	200/15 13°	200/7 8°	260/21 -5°	230/25 -13°	260/18 -29°	310/16 -39°	360/27 -51°

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	Elevation
SFO San Francisco, CA	departure	no report just now	13 ft
MER Atwater, CA	90 nm out, 4 nm northwest of the line, tower	no report just now	190 ft
FAT Fresno, CA	139 nm out, 25 nm southwest of the line, tower	no report just now	335 ft
VGT Las Vegas, NV	358 nm out, 7 nm southwest of the line, tower	no report just now	2,205 ft
GCN Grand Canyon, AZ	498 nm out, 20 nm northeast of the line, tower	no report just now	6,608 ft
FLG Flagstaff, AZ	538 nm out, 20 nm south of the line, tower	no report just now	7,014 ft
XNI Zuni, NM	667 nm out, 16 nm north of the line	no report just now	6,371 ft
ONM Socorro, NM	787 nm out, 11 nm southwest of the line	no report just now	4,875 ft
ROW Roswell, NM	906 nm out, 9 nm south of the line, tower	no report just now	3,671 ft
LUV Lamesa, TX	1045 nm out, 10 nm north of the line	no report just now	2,998 ft
LZZ Lampasas, TX	1255 nm out, 6 nm south of the line	no report just now	1,214 ft
GRK Fort Hood (Killeen), TX	destination	no report just now	1,015 ft

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 GRK when you get there the forecast at the estimated arrival, 7:04 pm CDT (00:04 UTC)

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

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

6/7094 45NM NE MERCED, CA, Sunday, October 4, 2026 through Tuesday, October 20, 2026 UTC 18 nm from the route, 129 nm along the route · a hazard on the ground (fire-fighting, a chemical spill, rescue work) · until 20 October · ZOA
6/8890 LAS VEGAS, NV, Tuesday, October 13, 2026 Local on the route, 339 nm along the route · a VIP movement · starts tomorrow · ZLA
6/8808 Las Vegas, NV, Tuesday, October 13, 2026 Local 11 nm from the route, 358 nm along the route · security · starts tomorrow · ZLA
6/8722 ALAMOGORDO, NM, Tuesday, October 13, 2026 Local on the route, 826 nm along the route · security · starts tomorrow · ZAB

Daylight

Sunset at SFO 6:35 pm PDT (01:35 UTC), at GRK 7:02 pm CDT (00:02 UTC) (civil twilight ends 7:26 pm CDT (00:26 UTC)). At 120 knots the arrival at GRK is after sunset there (7:03 pm CDT (00:03 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: San Francisco International, Robert Gray Army Airfield.