Plan a flight · Sun 6:58 pm CDT (23:58 UTC)

Robert Gray Army Airfield to Luis Munoz Marin International GRK → SJU

1,885 nautical miles (2,169 statute miles) east on a straight line, true course 106°, about 102° magnetic at the departure end (variation 4E). At 120 knots that is 15 h 05 min at the quickest height in today's winds (30,000 ft, a 5-knot tailwind), arriving about 11:03 am AST (15:03 UTC). Right now GRK is VFR, wind from the south-southeast (150°) at 11 knots, gusting to 18; SJU is VFR, wind from the east-southeast (110°) at 5 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 6W: moderate turbulence above 18,000 ft from 28,000 ft to 40,000 ft. Near the route, 529 nm along 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 GRK.

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

A21N at 22,000 ft, 48 nm north, 4:09 pm CDT (21:09 UTC): moderate turbulence. 897 nm along the route, 48 nm north of the line.
as filed, and in English
```
RSW UA /OV RSW055015/TM 2109/FL220/TP A21N/TB MOD
```
Report
a routine report filed through RSW
Where
15 nm northeast (055°) of RSW
Time
21:09 UTC
Height
at 22,000 ft
Aircraft
A21N
Turbulence
moderate
C68A at 7,000 ft, 13 nm northeast, 4:24 pm CDT (21:24 UTC): moderate turbulence. 947 nm along the route, 13 nm northeast of the line.
as filed, and in English
```
KMIA UA /OV MIA270030/TM 2124/FL070/TP C68A/TB MOD
```
Report
a routine report filed through KMIA
Where
30 nm west (270°) of MIA
Time
21:24 UTC
Height
at 7,000 ft
Aircraft
C68A
Turbulence
moderate
A320 at 24,000 ft, 27 nm south, 5:07 pm CDT (22:07 UTC): light chop turbulence, remarks: during the climb zhu. 140 nm along the route, 27 nm south of the line.
as filed, and in English
```
IAH UA /OV IAH/TM 2207/FL240/TP A320/TB OCNL LGT CHOP /RM DURC. ZHU
```
Report
a routine report filed through IAH
Where
over IAH
Time
22:07 UTC
Height
at 24,000 ft
Aircraft
A320
Turbulence
occasional light chop
Remarks
during the climb zhu
B737 at 28,000 ft, 7 nm south, 5:52 pm CDT (22:52 UTC): light to moderate turbulence above 28,000 ft, remarks: below 26,000 ft zhu. 249 nm along the route, 7 nm south of the line.
as filed, and in English
```
BPT UA /OV BPT109042/TM 2252/FL280/TP B737/TB INTMT LGT-MOD FL280 /RM BLO FL260. ZHU
```
Report
a routine report filed through BPT
Where
42 nm east (109°) of BPT
Time
22:52 UTC
Height
at 28,000 ft
Aircraft
B737
Turbulence
intermittent light to moderate FL280
Remarks
below 26,000 ft zhu
B39M at 36,000 ft, 14 nm north, 4:17 pm CDT (21:17 UTC): light chop turbulence, remarks: zhu. 399 nm along the route, 14 nm north of the line.
as filed, and in English
```
MSY UA /OV LEV280020/TM 2117/FL360/TP B39M/TB LGT CHOP/RM ZHU
```
Report
a routine report filed through MSY
Where
20 nm west (280°) of LEV
Time
21:17 UTC
Height
at 36,000 ft
Aircraft
B39M
Turbulence
light chop
Remarks
zhu
A21N at 32,000 ft, 5 nm southwest, 6:15 pm CDT (23:15 UTC): light chop turbulence, remarks: zhu. 439 nm along the route, 5 nm southwest of the line.
as filed, and in English
```
MSY UA /OV LEV154030/TM 2315/FL320/TP A21N/TB LGT CHOP/RM ZHU
```
Report
a routine report filed through MSY
Where
30 nm southeast (154°) of LEV
Time
23:15 UTC
Height
at 32,000 ft
Aircraft
A21N
Turbulence
light chop
Remarks
zhu
B38M at 31,000 ft, 6 nm northeast, 5:44 pm CDT (22:44 UTC): no turbulence, clear from 31,000 ft to 60,000 ft. 1047 nm along the route, 6 nm northeast of the line.
as filed, and in English
```
MYNN UA /OV ZBV180045/TM 2244/FL310/TP B38M/SK SKC/TB NEG
```
Report
a routine report filed through MYNN
Where
45 nm south (180°) of ZBV
Time
22:44 UTC
Height
at 31,000 ft
Aircraft
B38M
Sky
clear
Turbulence
none
A320 at 23,000 ft, 13 nm northeast, 5:22 pm CDT (22:22 UTC): no turbulence, vmc. 1057 nm along the route, 13 nm northeast of the line.
as filed, and in English
```
MYNN UA /OV ZBV165045/TM 2222/FL230/TP A320/WX VMC/TB NEG
```
Report
a routine report filed through MYNN
Where
45 nm south (165°) of ZBV
Time
22:22 UTC
Height
at 23,000 ft
Aircraft
A320
Weather
visual conditions
Turbulence
none
A320 at 34,000 ft, 36 nm north, 4:05 pm CDT (21:05 UTC): no turbulence. 1187 nm along the route, 36 nm north of the line.
as filed, and in English
```
MYNN UA /OV ZQA140050/TM 2105/FL340/TP A320/TB NEG
```
Report
a routine report filed through MYNN
Where
50 nm southeast (140°) of ZQA
Time
21:05 UTC
Height
at 34,000 ft
Aircraft
A320
Turbulence
none
A321 at 34,000 ft, 25 nm south, 4:03 pm CDT (21:03 UTC): no turbulence. 1456 nm along the route, 25 nm south of the line.
as filed, and in English
```
MBPV UA /OV PVN251036/TM 2103/FL340/TP A321/TB NEG
```
Report
a routine report filed through MBPV
Where
36 nm west (251°) of PVN
Time
21:03 UTC
Height
at 34,000 ft
Aircraft
A321
Turbulence
none

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 9 forecast points nearest it (CLL, HOU, LCH, MSY, MOB, TLH, PIE, EYW, 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	200° at 5 kt	+1 kt		119 kt	15 h 50 min	11:48 am AST (15:48 UTC)
5,500 ft	230° at 2 kt	−1 kt		121 kt	15 h 35 min	11:33 am AST (15:33 UTC)
7,500 ft	220° at 3 kt	−1 kt	15 °C	121 kt	15 h 35 min	11:33 am AST (15:33 UTC)
9,500 ft	220° at 5 kt	−2 kt	12 °C	122 kt	15 h 27 min	11:25 am AST (15:25 UTC)
11,500 ft	250° at 5 kt	−4 kt	9 °C	124 kt	15 h 12 min	11:10 am AST (15:10 UTC)
13,500 ft	250° at 6 kt	−4 kt	5 °C	124 kt	15 h 12 min	11:10 am AST (15:10 UTC)
15,500 ft	240° at 7 kt	−4 kt	1 °C	124 kt	15 h 12 min	11:10 am AST (15:10 UTC)
17,500 ft	240° at 8 kt	−4 kt	-4 °C	124 kt	15 h 12 min	11:10 am AST (15:10 UTC)
18,000 ft FL180	240° at 9 kt	−4 kt	-5 °C	124 kt	15 h 12 min	11:10 am AST (15:10 UTC)
24,000 ft FL240	230° at 8 kt	−3 kt	-16 °C	123 kt	15 h 20 min	11:18 am AST (15:18 UTC)
30,000 ft FL300	270° at 6 kt	−5 kt	-31 °C	125 kt	15 h 05 min	11:03 am AST (15:03 UTC)
34,000 ft FL340	200° at 8 kt	+1 kt	-41 °C	119 kt	15 h 50 min	11:48 am AST (15:48 UTC)
39,000 ft FL390	190° at 5 kt	+2 kt	-52 °C	118 kt	15 h 58 min	11:56 am AST (15:56 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
CLL	used from 0 nm out; 56 nm from the line	160/18	190/18 16°	200/19 12°	220/14 7°	260/18 -5°	250/20 -13°	290/29 -29°	290/31 -40°	300/22 -53°
HOU	used from 150 nm out; 49 nm from the line	160/18	160/14 17°	180/19 12°	190/11 8°	260/12 -4°	260/14 -13°	310/26 -30°	310/30 -40°	320/21 -52°
LCH	used from 199 nm out; 26 nm from the line	190/6	180/8 18°	170/13 12°	220/12 7°	290/10 -4°	280/15 -14°	320/30 -31°	320/32 -40°	320/39 -53°
MSY	used from 349 nm out; 63 nm from the line	L/V	020/6 18°	L/V 12°	300/11 7°	330/15 -4°	320/22 -16°	330/38 -32°	350/47 -42°	340/56 -52°
MOB	used from 499 nm out; 144 nm from the line	310/7	350/18 18°	330/16 12°	300/18 7°	320/17 -6°	330/27 -17°	340/52 -33°	350/53 -43°	330/38 -50°
TLH	used from 598 nm out; 200 nm from the line	300/17	340/32 17°	320/27 13°	300/27 8°	280/23 -7°	250/37 -17°	230/44 -33°	220/53 -41°	220/48 -51°
PIE	used from 648 nm out; 163 nm from the line	310/7	270/12 17°	270/14 13°	260/14 8°	240/22 -5°	230/24 -16°	220/26 -31°	200/31 -41°	180/33 -53°
EYW	used from 848 nm out; 96 nm from the line	090/8	100/8 19°	L/V 14°	L/V 8°	160/8 -5°	170/8 -15°	360/6 -32°	050/8 -42°	100/17 -52°
MIA	used from 897 nm out; 61 nm from the line	190/8	L/V 18°	180/5 14°	L/V 9°	190/10 -5°	160/10 -16°	150/13 -30°	160/26 -40°	150/23 -52°

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 broken layer at 19,000 feet	from the south-southeast (150°) at 11 knots, gusting to 18	10+ mi	19,000 ft	1,015 ft	5:55 pm CDT (22:55 UTC)
CXO Houston, TX	130 nm out, 5 nm south of the line, tower	VFR	from the southeast (140°) at 9 knots	10+ mi	none	244 ft	23:53 UTC
BPT Beaumont/Port Arthur, TX	209 nm out, 6 nm southwest of the line, tower	VFR	from the southeast (140°) at 4 knots	10+ mi	none	14 ft	23:53 UTC
APF Naples, FL	897 nm out, 15 nm north of the line, tower	VFR	from the east-northeast (060°) at 6 knots	10+ mi	none	8 ft	23:53 UTC
TMB Miami, FL	977 nm out, 17 nm north of the line, tower	reported, no category	calm		none	10 ft	23:53 UTC
MYAK Congo Town,	1147 nm out, 5 nm east of the line	no report just now				20 ft
MBPV Providenciales,	1476 nm out, 6 nm northeast of the line, tower	VFR Sky: scattered clouds at 1,400 feet	from the northeast (050°) at 4 knots	6+ mi	none	13 ft	23:00 UTC
MBGT Cockburn Town,	1546 nm out, 17 nm north of the line, tower	marginal VFR Sky: a broken layer at 1,600 feet	from the east (090°) at 14 knots	6+ mi	1,600 ft	11 ft	23:00 UTC
ABO Arecibo, PR	1855 nm out, 19 nm southwest of the line	no report just now				20 ft
SJU San Juan, PR	destination	VFR Sky: a few clouds at 2,800 feet, a few clouds at 4,000 feet	from the east-southeast (110°) at 5 knots	10+ mi	none	9 ft	6:56 pm AST (22:56 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 SJU when you get there the forecast at the estimated arrival, 11:03 am AST (15:03 UTC)

Wind from the east at 11 knots, visibility more than 6 miles, showers nearby, a few clouds at 2,500 feet, scattered clouds at 4,000 feet VFR

The whole forecast for SJU

From Sun 8:00 pm AST (00:00 UTC): wind from the east-southeast at 6 knots, visibility more than 6 miles, showers nearby, scattered clouds at 3,000 feet, scattered clouds at 6,000 feet
From Mon 10:00 am AST (14:00 UTC): wind from the east at 11 knots, visibility more than 6 miles, showers nearby, a few clouds at 2,500 feet, scattered clouds at 4,000 feet
From Mon 1:00 pm AST (17:00 UTC): wind from the east at 13 knots, gusting to 20, visibility more than 6 miles, light rain showers, thunderstorms nearby, scattered clouds at 2,500 feet (thunderheads), a broken layer at 5,000 feet
From Mon 7:00 pm AST (23:00 UTC): wind from the east at 5 knots, visibility more than 6 miles, showers nearby, scattered clouds at 3,000 feet, scattered clouds at 6,000 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 24 nm from the route, at the departure end · security · ZFW
6/4508 CEIBA, PR 24 nm from the route, at the destination end · security · ZSU

Daylight

Sunset at GRK 7:03 pm CDT (00:03 UTC), at SJU 6:03 pm AST (22:03 UTC) (civil twilight ends 6:25 pm AST (22:25 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 southern Plains · loop National Weather Service

Radar now, the Southeast · loop National Weather Service

Radar now, the Caribbean · 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: Robert Gray Army Airfield, Luis Munoz Marin International.