Robert Gray Army Airfield to March Arb Airport GRK → RIV
997 nautical miles (1,147 statute miles) west on a straight line, true course 285°, about 281° magnetic at the departure end (variation 4E). At 120 knots that is 8 h 36 min at the quickest height in today's winds (4,500 ft, a 4-knot headwind), arriving about 9:39 am PDT (16:39 UTC). Right now GRK is VFR, wind from the south-southeast (150°) at 9 knots; RIV is VFR, wind from the southeast (140°) at 6 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: 10 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 4W: moderate turbulence below 18,000 ft up to 18,000 ft. Near the route, 528 nm along the route.
- AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 638 to 708 nm out.
- AIRMET TANGO 2W: moderate turbulence above 18,000 ft from 35,000 ft to 45,000 ft. Over the route from 818 to 977 nm out.
- AIRMET TANGO 1W: moderate turbulence below 18,000 ft (due to mountain wave) up to 15,000 ft. Over the route from 907 to 987 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 GRK.
Pilot reports along the route within 50 nm of the line, last three hours, the serious ones first
- B737 at 14,000 ft, 29 nm north, 12:15 am CDT (05:15 UTC): moderate turbulence, remarks: during the descent through clouds. 738 nm along the route, 29 nm north of the line.
as filed, and in English
PHX UA /OV PXR339030/TM 0515/FL140/TP B737/TB OCNL MOD/RM DURD THROUGH CLOUDS
- Report
- a routine report filed through PHX
- Where
- 30 nm north (339°) of PXR
- Time
- 05:15 UTC
- Height
- at 14,000 ft
- Aircraft
- B737
- Turbulence
- occasional moderate
- Remarks
- during the descent through clouds
- B38M at 3,000 ft, 16 nm northwest, 12:47 am CDT (05:47 UTC): a broken layer from 2,900 ft to 8,000 ft, remarks: BASE030. At the destination end, 16 nm northwest 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
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 9 forecast points nearest it (SAT, ABI, INK, ROW, ELP, TUS, PHX, BLH, ONT). 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 | 200° at 17 kt | +4 kt | 17 °C | 116 kt | 8 h 36 min | 9:39 am PDT (16:39 UTC) |
| 6,500 ft | 200° at 20 kt | +5 kt | 14 °C | 115 kt | 8 h 40 min | 9:43 am PDT (16:43 UTC) |
| 8,500 ft | 200° at 21 kt | +5 kt | 11 °C | 115 kt | 8 h 40 min | 9:43 am PDT (16:43 UTC) |
| 10,500 ft | 210° at 23 kt | +7 kt | 8 °C | 113 kt | 8 h 49 min | 9:52 am PDT (16:52 UTC) |
| 12,500 ft | 210° at 25 kt | +10 kt | 4 °C | 110 kt | 9 h 04 min | 10:07 am PDT (17:07 UTC) |
| 14,500 ft | 220° at 30 kt | +14 kt | 0 °C | 106 kt | 9 h 24 min | 10:27 am PDT (17:27 UTC) |
| 16,500 ft | 220° at 34 kt | +18 kt | -4 °C | 102 kt | 9 h 46 min | 10:49 am PDT (17:49 UTC) |
| 18,000 ft FL180 | 220° at 38 kt | +21 kt | -7 °C | 99 kt | 10 h 04 min | 11:07 am PDT (18:07 UTC) |
| 24,000 ft FL240 | 230° at 49 kt | +30 kt | -16 °C | 90 kt | 11 h 05 min | 12:08 pm PDT (19:08 UTC) |
| 30,000 ft FL300 | 230° at 60 kt | +38 kt | -27 °C | 82 kt | 12 h 10 min | 1:13 pm PDT (20:13 UTC) |
| 34,000 ft FL340 | 240° at 60 kt | +44 kt | -36 °C | 76 kt | 13 h 07 min | 2:10 pm PDT (21:10 UTC) |
| 39,000 ft FL390 | 240° at 52 kt | +41 kt | -48 °C | 79 kt | 12 h 37 min | 1:40 pm PDT (20:40 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| SAT | used from 0 nm out; 99 nm from the line | 150/26 | 180/18 19° | 180/18 14° | 200/14 9° | 230/16 -6° | 210/9 -13° | 270/8 -29° | 280/6 -39° | 340/19 -51° |
| ABI | used from 50 nm out; 66 nm from the line | 200/31 17° | 210/21 15° | 240/15 9° | 250/14 -4° | 250/24 -14° | 250/36 -28° | 270/35 -38° | 290/41 -50° | |
| INK | used from 199 nm out; 58 nm from the line | 190/23 20° | 200/18 15° | 230/18 8° | 240/23 -4° | 240/37 -14° | 240/46 -27° | 250/42 -38° | 260/36 -50° | |
| ROW | used from 349 nm out; 54 nm from the line | 190/33 | 210/27 14° | 220/28 6° | 230/36 -6° | 230/56 -15° | 230/63 -27° | 250/59 -37° | 260/57 -49° | |
| ELP | used from 399 nm out; 54 nm from the line | 290/17 | 210/11 13° | 200/18 5° | 220/46 -6° | 230/64 -14° | 230/63 -27° | 240/55 -37° | 240/44 -48° | |
| TUS | used from 548 nm out; 120 nm from the line | 210/13 13° | 200/35 9° | 210/40 5° | 220/50 -7° | 220/59 -18° | 230/79 -26° | 230/84 -35° | 230/84 -48° | |
| PHX | used from 648 nm out; 60 nm from the line | 150/5 | 200/21 12° | 200/27 6° | 200/35 3° | 220/58 -8° | 220/69 -19° | 220/87 -26° | 230/93 -35° | 230/79 -47° |
| BLH | used from 798 nm out; 47 nm from the line | 210/13 | 200/21 11° | 200/22 5° | 210/25 -1° | 210/51 -10° | 220/61 -20° | 220/81 -29° | 220/92 -34° | 220/79 -45° |
| ONT | used from 947 nm out; 44 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° |
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 |
|---|---|---|---|---|---|---|---|
| GRK Fort Hood (Killeen), TX | departure | VFR Sky: a few clouds at 1,800 feet | from the south-southeast (150°) at 9 knots | 10+ mi | none | 1,015 ft | 2:55 am CDT (07:55 UTC) |
| LZZ Lampasas, TX | 20 nm out, 3 nm south of the line | marginal VFR Sky: a broken layer at 1,600 feet | from the south (170°) at 7 knots, gusting to 14 | 10+ mi | 1,600 ft | 1,214 ft | 07:55 UTC |
| SJT San Angelo, TX | 140 nm out, 17 nm south of the line, tower | VFR | from the south (170°) at 5 knots | 10+ mi | none | 1,918 ft | 07:51 UTC |
| MAF Midland, TX | 229 nm out, 2 nm southwest of the line, tower | VFR | from the south (180°) at 14 knots, gusting to 22 | 10+ mi | none | 2,872 ft | 07:53 UTC |
| CNM Carlsbad, NM | 339 nm out, 2 nm southeast of the line | VFR | from the south (170°) at 7 knots | 10+ mi | none | 3,294 ft | 07:53 UTC |
| ALM Alamogordo, NM | 429 nm out, 12 nm north of the line | VFR Sky: a broken layer at 9,000 feet, a broken layer at 11,000 feet | from the east-northeast (060°) at 5 knots | 10+ mi | 9,000 ft | 4,199 ft | 07:55 UTC |
| CFT Clifton/Morenci, AZ | 588 nm out, 9 nm south of the line | no report just now | 3,797 ft | ||||
| SAD Safford, AZ | 608 nm out, 18 nm south of the line | VFR Sky: a few clouds at 7,500 feet, overcast at 9,000 feet | from the east (080°) at 6 knots | 10+ mi | 9,000 ft | 3,178 ft | 07:51 UTC |
| PHX Phoenix, AZ | 738 nm out, 4 nm east of the line, tower | VFR Sky: scattered clouds at 6,000 feet, scattered clouds at 9,500 feet | from the east (090°) at 3 knots | 10+ mi | none | 1,134 ft | 07:51 UTC |
| BLH Blythe, CA | 867 nm out, 5 nm southwest of the line | VFR Sky: overcast at 8,500 feet Weather: light rain | calm | 10+ mi | 8,500 ft | 399 ft | 07:52 UTC |
| PSP Palm Springs, CA | 957 nm out, 2 nm west of the line, tower | VFR Sky: a few clouds at 5,000 feet, scattered clouds at 8,000 feet | from the west-northwest (290°) at 4 knots | 10+ mi | none | 476 ft | 07:53 UTC |
| RIV Riverside, CA | destination | VFR Sky: a broken layer at 5,000 feet, overcast at 8,500 feet | from the southeast (140°) at 6 knots | 10+ mi | 5,000 ft | 1,536 ft | 12:10 am PDT (07:10 UTC) |
The highest airport on this list sits at 4,199 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At RIV when you get there the forecast at the estimated arrival, 9:39 am PDT (16:39 UTC)
Wind from the south-southeast at 10 knots, gusting to 15, showers nearby, a few clouds at 2,000 feet, a broken layer at 4,000 feet and more above VFR
The whole forecast for RIV
- From Sun 9:00 pm PDT (04:00 UTC): wind from the south-southeast at 10 knots, gusting to 15, showers nearby, a few clouds at 2,000 feet, a broken layer at 4,000 feet and more above
- Changing between Sun 10:00 pm PDT (05:00 UTC) and 11:00 pm PDT (06:00 UTC) to: wind from the south-southeast at 9 knots, light rain, scattered clouds at 1,000 feet, a broken layer at 2,000 feet and more above
- Changing between Mon 12:00 am PDT (07:00 UTC) and 1:00 am PDT (08:00 UTC) to: wind from the south-southeast at 9 knots, light rain, mist, scattered clouds at 700 feet, a broken layer at 2,000 feet and more above
- At times between Mon 1:00 am PDT (08:00 UTC) and 7:00 am PDT (14:00 UTC): wind from the south-southeast at 10 knots, gusting to 15, light rain, mist, a broken layer at 1,500 feet, overcast at 4,000 feet
- Changing between Mon 6:00 am PDT (13:00 UTC) and 7:00 am PDT (14:00 UTC) to: wind from the south-southeast at 6 knots, light rain, scattered clouds at 700 feet, a broken layer at 2,500 feet and more above
- Changing between Mon 10:00 am PDT (17:00 UTC) and 11:00 am PDT (18:00 UTC) to: wind from the south at 9 knots, showers nearby, a broken layer at 3,000 feet, overcast at 6,000 feet
- Changing between Mon 1:00 pm PDT (20:00 UTC) and 2:00 pm PDT (21:00 UTC) to: wind from the south at 10 knots, showers nearby, a broken layer at 4,000 feet, a broken layer at 6,000 feet
- At times between Mon 2:00 pm PDT (21:00 UTC) and 7:00 pm PDT (02:00 UTC): wind from the southwest at 12 knots, gusting to 20, light rain showers, a broken layer at 3,000 feet, a broken layer at 5,000 feet
- Changing between Mon 8:00 pm PDT (03:00 UTC) and 9:00 pm PDT (04:00 UTC) to: wind light and variable, a broken layer at 2,000 feet, overcast at 5,000 feet
The forecast for GRK, the departure
- From Mon 3:00 am CDT (08:00 UTC): wind from the south-southeast at 9 knots, a broken layer at 1,500 feet
- Changing between Mon 11:00 am CDT (16:00 UTC) and 12:00 pm CDT (17:00 UTC) to: wind from the south-southeast at 9 knots, a broken layer at 5,000 feet
- Changing between Mon 5:00 pm CDT (22:00 UTC) and 6:00 pm CDT (23:00 UTC) to: wind from the south-southeast at 9 knots, a broken layer at 10,000 feet
- Changing between Mon 10:00 pm CDT (03:00 UTC) and 11:00 pm CDT (04:00 UTC) to: wind from the south-southeast at 9 knots, a broken layer at 1,000 feet
Temporary flight restrictions on the line or within 25 nm of it
- 6/4240 SAN ANGELO, TX, Sunday, March 8, 2026 through Sunday, November 1, 2026 Local 15 nm from the route, 130 nm along the route · security · until 1 November · ZFW
- 6/8722 ALAMOGORDO, NM, Tuesday, October 13, 2026 Local 17 nm from the route, 429 nm along the route · security · starts tomorrow · ZAB
- 6/8887 Indio, CA, Sunday, October 11, 2026 through Monday, October 12, 2026 Local 7 nm from the route, 947 nm along the route · security · until 12 October · ZLA
Daylight
Sunset at GRK 7:02 pm CDT (00:02 UTC), at RIV 6:17 pm PDT (01:17 UTC) (civil twilight ends 6:42 pm PDT (01:42 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
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: Robert Gray Army Airfield, March Arb Airport.