Robert Gray Army Airfield to Miami International GRK → MIA
977 nautical miles (1,125 statute miles) east on a straight line, true course 105°, about 101° magnetic at the departure end (variation 4E). At 120 knots that is 6 h 56 min at the quickest height in today's winds (30,000 ft, a 21-knot tailwind), arriving about 9:54 am EDT (13:54 UTC). Right now GRK is VFR, wind from the south-southeast (150°) at 8 knots; MIA is 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: 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
No SIGMET or AIRMET covers any part of this route right now.
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
- A321 at 30,000 ft, 28 nm south, 11:25 pm CDT (04:25 UTC): moderate chop turbulence, remarks: zhu. 289 nm along the route, 28 nm south of the line.
as filed, and in English
LFT UA /OV LLA205025/TM 0425/FL300/TP A321/TB MOD CHOP/RM ZHU
- Report
- a routine report filed through LFT
- Where
- 25 nm southwest (205°) of LLA
- Time
- 04:25 UTC
- Height
- at 30,000 ft
- Aircraft
- A321
- Turbulence
- moderate chop
- Remarks
- zhu
- B739 at 29,000 ft, 14 nm north, 11:06 pm CDT (04:06 UTC): moderate clear-air turbulence. 598 nm along the route, 14 nm north of the line.
as filed, and in English
CEW UA /OV CEW180150/TM 0406/FL290/TP B739/TB CONS MOD CAT
- Report
- a routine report filed through CEW
- Where
- 150 nm south (180°) of CEW
- Time
- 04:06 UTC
- Height
- at 29,000 ft
- Aircraft
- B739
- Turbulence
- continuous moderate clear-air turbulence
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 8 forecast points nearest it (CLL, HOU, LCH, MSY, MOB, TLH, PIE, MIA). 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 | 160° at 6 kt | +3 kt | 117 kt | 8 h 21 min | 11:19 am EDT (15:19 UTC) | |
| 5,500 ft | 160° at 7 kt | +4 kt | 116 kt | 8 h 25 min | 11:23 am EDT (15:23 UTC) | |
| 7,500 ft | 180° at 5 kt | +1 kt | 16 °C | 119 kt | 8 h 13 min | 11:11 am EDT (15:11 UTC) |
| 9,500 ft | 230° at 4 kt | −3 kt | 12 °C | 123 kt | 7 h 57 min | 10:55 am EDT (14:55 UTC) |
| 11,500 ft | 270° at 6 kt | −6 kt | 9 °C | 126 kt | 7 h 45 min | 10:43 am EDT (14:43 UTC) |
| 13,500 ft | 270° at 8 kt | −8 kt | 5 °C | 128 kt | 7 h 38 min | 10:36 am EDT (14:36 UTC) |
| 15,500 ft | 270° at 10 kt | −10 kt | 0 °C | 130 kt | 7 h 31 min | 10:29 am EDT (14:29 UTC) |
| 17,500 ft | 270° at 12 kt | −11 kt | -4 °C | 131 kt | 7 h 27 min | 10:25 am EDT (14:25 UTC) |
| 18,000 ft FL180 | 270° at 13 kt | −12 kt | -5 °C | 132 kt | 7 h 24 min | 10:22 am EDT (14:22 UTC) |
| 24,000 ft FL240 | 270° at 17 kt | −16 kt | -15 °C | 136 kt | 7 h 11 min | 10:09 am EDT (14:09 UTC) |
| 30,000 ft FL300 | 300° at 22 kt | −21 kt | -31 °C | 141 kt | 6 h 56 min | 9:54 am EDT (13:54 UTC) |
| 34,000 ft FL340 | 300° at 19 kt | −18 kt | -41 °C | 138 kt | 7 h 05 min | 10:03 am EDT (14:03 UTC) |
| 39,000 ft FL390 | 310° at 19 kt | −17 kt | -52 °C | 137 kt | 7 h 08 min | 10:06 am EDT (14:06 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| CLL | used from 0 nm out; 56 nm from the line | 170/22 | 170/26 18° | 200/15 14° | 240/13 8° | 240/15 -5° | 260/17 -13° | 290/27 -29° | 290/22 -40° | 320/30 -51° |
| HOU | used from 150 nm out; 54 nm from the line | 160/22 | 150/27 19° | 180/16 14° | 250/7 9° | 270/10 -5° | 270/16 -13° | 310/23 -29° | 310/26 -40° | 330/20 -52° |
| LCH | used from 199 nm out; 22 nm from the line | 160/21 | 160/18 18° | 180/13 12° | 230/6 8° | 280/10 -4° | 260/13 -14° | 310/29 -30° | 320/32 -40° | 330/33 -53° |
| MSY | used from 349 nm out; 53 nm from the line | 110/5 | 150/6 19° | L/V 12° | 310/5 7° | 310/13 -4° | 290/20 -16° | 330/36 -31° | 330/37 -41° | 350/43 -52° |
| MOB | used from 499 nm out; 130 nm from the line | 330/5 | 330/6 19° | 340/6 11° | 330/10 7° | 320/16 -5° | 310/26 -16° | 340/40 -32° | 340/47 -42° | 350/51 -52° |
| TLH | used from 598 nm out; 183 nm from the line | 320/18 | 350/31 18° | 340/24 13° | 310/17 8° | 280/22 -7° | 300/25 -17° | 320/28 -33° | 320/24 -41° | 320/25 -50° |
| PIE | used from 648 nm out; 153 nm from the line | 350/6 | L/V 18° | 290/6 14° | 280/9 9° | 250/18 -6° | 250/23 -17° | 240/30 -31° | 220/31 -41° | 220/30 -52° |
| MIA | used from 897 nm out; 55 nm from the line | 150/7 | 140/5 17° | 160/5 14° | L/V 9° | 230/8 -5° | 230/8 -17° | 150/11 -32° | 150/25 -41° | 180/29 -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 | Wind | Visibility | Ceiling | Elevation | Reported |
|---|---|---|---|---|---|---|---|
| GRK Fort Hood (Killeen), TX | departure | VFR Sky: a few clouds at 1,700 feet, scattered clouds at 18,000 feet | from the south-southeast (150°) at 8 knots | 9 mi | none | 1,015 ft | 1:55 am CDT (06:55 UTC) |
| CLL College Station, TX | 80 nm out, 8 nm south of the line, tower | VFR | from the south-southeast (150°) at 6 knots | 10+ mi | none | 320 ft | 06:53 UTC |
| CXO Houston, TX | 130 nm out, 9 nm south of the line, tower | VFR | calm | 10+ mi | none | 244 ft | 06:53 UTC |
| LCH Lake Charles, LA | 249 nm out, 11 nm north of the line, tower | IFR Weather: mist | from the east-southeast (120°) at 3 knots | 2.5 mi | none | 14 ft | 06:53 UTC |
| HUM Houma, LA | 379 nm out, 18 nm northeast of the line, tower | VFR | calm | 7 mi | none | 8 ft | 23:47 UTC |
| GAO Galliano, LA | 409 nm out, 18 nm north of the line | VFR Weather: mist | from the west-southwest (240°) at 1 knots | 6 mi | none | 0 ft | 06:35 UTC |
| FMY Fort Myers, FL | 878 nm out, 12 nm northeast of the line, tower | VFR | calm | 10+ mi | none | 17 ft | 06:53 UTC |
| APF Naples, FL | 897 nm out, 11 nm southwest of the line, tower | VFR | calm | 10+ mi | none | 8 ft | 06:53 UTC |
| MIA Miami, FL | destination | VFR Sky: a few clouds at 2,000 feet | calm | 10+ mi | none | 9 ft | 2:53 am EDT (06:53 UTC) |
The highest airport on this list sits at 1,015 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At MIA when you get there the forecast at the estimated arrival, 9:54 am EDT (13:54 UTC)
Wind from the north-northwest at 6 knots, visibility more than 6 miles, scattered clouds at 2,500 feet, scattered clouds at 5,000 feet VFR
The whole forecast for MIA
- From Mon 2:00 am EDT (06:00 UTC): wind light and variable, visibility more than 6 miles, a few clouds at 2,500 feet
- From Mon 9:00 am EDT (13:00 UTC): wind from the north-northwest at 6 knots, visibility more than 6 miles, scattered clouds at 2,500 feet, scattered clouds at 5,000 feet
- From Mon 12:00 pm EDT (16:00 UTC): wind from the northeast at 10 knots, visibility more than 6 miles, showers nearby, scattered clouds at 2,500 feet
- From Mon 8:00 pm EDT (00:00 UTC): wind light and variable, visibility more than 6 miles, a few clouds at 2,500 feet
The forecast for GRK, the departure
- From Sun 7:00 pm CDT (00:00 UTC): wind from the south-southeast at 9 knots, scattered clouds at 6,000 feet
- Changing between Mon 3:00 am CDT (08:00 UTC) and 4:00 am CDT (09:00 UTC) to: wind from the southeast at 6 knots, a broken layer at 1,500 feet
- Changing between Mon 4:00 pm CDT (21:00 UTC) and 5:00 pm CDT (22:00 UTC) to: wind from the south-southeast at 12 knots, a broken layer at 5,000 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 1,500 feet
Temporary flight restrictions on the line or within 25 nm of it
- 6/0543 MCGREGOR, TX 23 nm from the route, at the departure end · security · ZFW
Daylight
Sunset at GRK 7:02 pm CDT (00:02 UTC), at MIA 6:56 pm EDT (22:56 UTC) (civil twilight ends 7:19 pm EDT (23:19 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
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, Miami International.