Plan a flight · Mon 7:05 am CDT (12:05 UTC)

San Antonio International to Piedmont Triad International SAT → GSO

1,012 nautical miles (1,165 statute miles) northeast on a straight line, true course 062°, about 058° magnetic at the departure end (variation 4E). At 120 knots that is 7 h 44 min at the quickest height in today's winds (30,000 ft, a 11-knot tailwind), arriving about 3:49 pm EDT (19:49 UTC). Right now SAT is marginal VFR, wind from the east (100°) at 4 knots; GSO is VFR, wind from the west-northwest (290°) at 9 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: 1 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 SIERRA 1E: low cloud or poor visibility (IFR conditions) (due to ceilings below 1,000 ft, visibility below 3 miles, mist, fog). Over the route from 417 to 615 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 705 to 844 nm out.
AIRMET TANGO 5W: moderate turbulence above 18,000 ft (due to mountain wave) from 29,000 ft to 40,000 ft. Over the route from 784 to 963 nm out.
AIRMET TANGO 3W: moderate turbulence below 18,000 ft (due to mountain wave) up to 6,000 ft. Over the route from 784 to 973 nm out.
AIRMET SIERRA 4E: mountains obscured by cloud (due to mountains obscured by clouds, mist). Over the route from 784 to 893 nm out.
AIRMET TANGO 3W: 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 last 109 nm of 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 SAT.

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

A320 at 21,000 ft, 29 nm southeast, 5:45 am CDT (10:45 UTC): moderate chop turbulence, remarks: zhu. 50 nm along the route, 29 nm southeast of the line.
as filed, and in English
```
SAT UA /OV SAT090060/TM 1045/FL210/TP A320/TB OCNL MOD CHOP/RM ZHU
```
Report
a routine report filed through SAT
Where
60 nm east (090°) of SAT
Time
10:45 UTC
Height
at 21,000 ft
Aircraft
A320
Turbulence
occasional moderate chop
Remarks
zhu
B739 at 36,000 ft, 25 nm south, 6:18 am CDT (11:18 UTC): moderate turbulence, remarks: ztlfd 36. 854 nm along the route, 25 nm south of the line.
as filed, and in English
```
ATL UA /OV ODF065025/TM 1118/FL360/TP B739/TB MOD/RM ZTLFD 36
```
Report
a routine report filed through ATL
Where
25 nm northeast (065°) of ODF
Time
11:18 UTC
Height
at 36,000 ft
Aircraft
B739
Turbulence
moderate
Remarks
ztlfd 36
B737 at 1,800 ft, 7 nm north, 6:18 am CDT (11:18 UTC): remarks: KSAT base 1,800 ft, on top 3,500 ft. At the departure end, 7 nm north of the line.
as filed, and in English
```
SAT UA /OV SAT/TM 1118/FL018/TP B737/RM KSAT BASE 018, ON TOP 035
```
Report
a routine report filed through SAT
Where
over SAT
Time
11:18 UTC
Height
at 1,800 ft
Aircraft
B737
Remarks
KSAT base 1,800 ft, on top 3,500 ft
A320 at 2,300 ft, 7 nm north, 5:37 am CDT (10:37 UTC): remarks: KSAT base 2,300 ft, on top 4,000 ft. At the departure end, 7 nm north of the line.
as filed, and in English
```
SAT UA /OV SAT/TM 1037/FL023/TP A320/RM KSAT BASE 023, ON TOP 040
```
Report
a routine report filed through SAT
Where
over SAT
Time
10:37 UTC
Height
at 2,300 ft
Aircraft
A320
Remarks
KSAT base 2,300 ft, on top 4,000 ft
B738 at 35,000 ft, 17 nm northwest, 6:58 am CDT (11:58 UTC): light chop turbulence, remarks: zhu. 60 nm along the route, 17 nm northwest of the line.
as filed, and in English
```
AUS UA /OV KCWK/TM 1158/FL350/TP B738/TB INTMT LGT CHOP/RM ZHU
```
Report
a routine report filed through AUS
Where
over KCWK
Time
11:58 UTC
Height
at 35,000 ft
Aircraft
B738
Turbulence
intermittent light chop
Remarks
zhu
B738 at 38,000 ft, 17 nm northwest, 6:22 am CDT (11:22 UTC): no turbulence, remarks: zhu. 60 nm along the route, 17 nm northwest of the line.
as filed, and in English
```
AUS UA /OV KCWK360015/TM 1122/FL380/TP B738/TB NEG/RM ZHU
```
Report
a routine report filed through AUS
Where
15 nm north (360°) of KCWK
Time
11:22 UTC
Height
at 38,000 ft
Aircraft
B738
Turbulence
none
Remarks
zhu
B748 at 40,000 ft, 17 nm northwest, 6:17 am CDT (11:17 UTC): no turbulence, remarks: smooth zhu. 60 nm along the route, 17 nm northwest of the line.
as filed, and in English
```
AUS UA /OV KCWK270015/TM 1117/FL400/TP B748/TB NEG/RM SMOOTH ZHU
```
Report
a routine report filed through AUS
Where
15 nm west (270°) of KCWK
Time
11:17 UTC
Height
at 40,000 ft
Aircraft
B748
Turbulence
none
Remarks
smooth zhu
B738 at 24,000 ft, 48 nm southeast, 6:25 am CDT (11:25 UTC): remarks: zhu. 69 nm along the route, 48 nm southeast of the line.
as filed, and in English
```
VCT UA /OV KVCT360030/TM 1125/FL240/TP B738/SK TOP 220/RM ZHU
```
Report
a routine report filed through VCT
Where
30 nm north (360°) of KVCT
Time
11:25 UTC
Height
at 24,000 ft
Aircraft
B738
Sky
top 22,000 ft
Remarks
zhu
B738 at 21,000 ft, 10 nm north, 6:48 am CDT (11:48 UTC): light to moderate turbulence, remarks: flight level at 19,000 ft FL220 zhu. 119 nm along the route, 10 nm north of the line.
as filed, and in English
```
CLL UA /OV KTNV200020/TM 1148/FL210/TP B738/TB LGT-MOD/RM FL 190 FL220 ZHU
```
Report
a routine report filed through CLL
Where
20 nm south (200°) of KTNV
Time
11:48 UTC
Height
at 21,000 ft
Aircraft
B738
Turbulence
light to moderate
Remarks
flight level at 19,000 ft FL220 zhu
B737 at 20,000 ft, 10 nm north, 6:35 am CDT (11:35 UTC): light chop turbulence, remarks: zhu. 119 nm along the route, 10 nm north of the line.
as filed, and in English
```
CLL UA /OV KTNV/TM 1135/FL200/TP B737/TB CONS LGT CHOP/RM ZHU
```
Report
a routine report filed through CLL
Where
over KTNV
Time
11:35 UTC
Height
at 20,000 ft
Aircraft
B737
Turbulence
continuous light chop
Remarks
zhu
B738 at 18,000 ft, 4 nm south, 6:59 am CDT (11:59 UTC): light turbulence, remarks: zhu. 169 nm along the route, 4 nm south of the line.
as filed, and in English
```
UTS UA /OV KLOA155020/TM 1159/FL180/TP B738/TB LGT CHOPN 180-230/RM ZHU
```
Report
a routine report filed through UTS
Where
20 nm southeast (155°) of KLOA
Time
11:59 UTC
Height
at 18,000 ft
Aircraft
B738
Turbulence
light chopn from 18,000 ft to 23,000 ft
Remarks
zhu
BE36 at 8,000 ft, 45 nm southeast, 6:18 am CDT (11:18 UTC): no turbulence, no icing, remarks: ZME65. 427 nm along the route, 45 nm southeast of the line.
as filed, and in English
```
JAN UA /OV MHZ225040/TM 1118/FL080/TP BE36/TB NEG/IC NEG/RM ZME65
```
Report
a routine report filed through JAN
Where
40 nm southwest (225°) of MHZ
Time
11:18 UTC
Height
at 8,000 ft
Aircraft
BE36
Turbulence
none
Icing
none
Remarks
ZME65
C56X at 1,000 ft, 24 nm north, 6:04 am CDT (11:04 UTC): remarks: during the climb runway 20 departure. 744 nm along the route, 24 nm north of the line.
as filed, and in English
```
CHA UA /OV CHA/TM 1104/FL010/TP C56X/SK TOP010/RM DURC. RY 20 DEPARTURE
```
Report
a routine report filed through CHA
Where
over CHA
Time
11:04 UTC
Height
at 1,000 ft
Aircraft
C56X
Sky
TOP010
Remarks
during the climb runway 20 departure
CRJ9 at 1,000 ft, 24 nm north, 5:15 am CDT (10:15 UTC): remarks: during the climb runway 20 departure. 744 nm along the route, 24 nm north of the line.
as filed, and in English
```
CHA UA /OV CHA/TM 1015/FL010/TP CRJ9/SK TOP010/RM DURC. RY 20 DEPARTURE
```
Report
a routine report filed through CHA
Where
over CHA
Time
10:15 UTC
Height
at 1,000 ft
Aircraft
CRJ9
Sky
TOP010
Remarks
during the climb runway 20 departure

6 more routine reports are on the map.

Winds aloft along the route, and the time en route the forecast for use 08:00–15:00 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 (SAT, CLL, SHV, JAN, BHM, HSV, TYS, GSP, TRI, RDU). 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	260° at 8 kt	−9 kt		129 kt	7 h 51 min	3:56 pm EDT (19:56 UTC)
5,500 ft	280° at 7 kt	−7 kt	11 °C	127 kt	7 h 58 min	4:03 pm EDT (20:03 UTC)
7,500 ft	300° at 9 kt	−7 kt	14 °C	127 kt	7 h 58 min	4:03 pm EDT (20:03 UTC)
9,500 ft	310° at 11 kt	−6 kt	10 °C	126 kt	8 h 02 min	4:07 pm EDT (20:07 UTC)
11,500 ft	310° at 12 kt	−6 kt	7 °C	126 kt	8 h 02 min	4:07 pm EDT (20:07 UTC)
13,500 ft	310° at 13 kt	−7 kt	3 °C	127 kt	7 h 58 min	4:03 pm EDT (20:03 UTC)
15,500 ft	310° at 15 kt	−8 kt	-1 °C	128 kt	7 h 54 min	3:59 pm EDT (19:59 UTC)
17,500 ft	310° at 17 kt	−9 kt	-5 °C	129 kt	7 h 51 min	3:56 pm EDT (19:56 UTC)
18,000 ft FL180	310° at 17 kt	−9 kt	-6 °C	129 kt	7 h 51 min	3:56 pm EDT (19:56 UTC)
24,000 ft FL240	310° at 17 kt	−8 kt	-17 °C	128 kt	7 h 54 min	3:59 pm EDT (19:59 UTC)
30,000 ft FL300	320° at 34 kt	−11 kt	-31 °C	131 kt	7 h 44 min	3:49 pm EDT (19:49 UTC)
34,000 ft FL340	330° at 38 kt	−7 kt	-40 °C	127 kt	7 h 58 min	4:03 pm EDT (20:03 UTC)
39,000 ft FL390	330° at 35 kt	−5 kt	-51 °C	125 kt	8 h 06 min	4:11 pm EDT (20:11 UTC)

Based on data from the 12th at 06:00 UTC; valid on the 12th at 12:00 UTC for use 08:00 to 15:00 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; 25 nm from the line	160/18	180/22 17°	190/16 14°	210/16 9°	220/16 -5°	200/11 -14°	250/8 -29°	330/8 -40°	020/26 -51°
CLL	used from 50 nm out; 52 nm from the line	180/24	170/21 19°	180/10 14°	230/7 8°	230/16 -6°	260/20 -13°	290/23 -29°	320/21 -39°	340/35 -51°
SHV	used from 199 nm out; 85 nm from the line	210/20	210/20 18°	230/20 11°	240/16 7°	270/17 -7°	250/11 -15°	300/34 -30°	310/34 -40°	320/36 -51°
JAN	used from 397 nm out; 54 nm from the line	240/10	260/15 18°	280/10 11°	290/6 6°	290/15 -5°	300/15 -17°	320/35 -30°	330/38 -40°	330/39 -51°
BHM	used from 546 nm out; 81 nm from the line	310/19	310/15 16°	320/19 11°	330/15 5°	330/23 -5°	320/14 -18°	320/36 -32°	330/44 -40°	340/36 -51°
HSV	used from 645 nm out; 30 nm from the line	300/20	310/14 16°	310/18 10°	310/15 4°	320/19 -5°	290/16 -18°	320/36 -32°	320/47 -41°	330/42 -50°
TYS	used from 744 nm out; 69 nm from the line	330/16	350/32 14°	350/37 9°	340/30 5°	330/28 -6°	340/36 -19°	330/40 -33°	330/51 -41°	330/36 -51°
GSP	used from 844 nm out; 37 nm from the line	340/30	360/24 13°	350/29 10°	340/33 6°	340/40 -7°	350/44 -19°	340/59 -31°	350/55 -41°	300/29 -50°
TRI	used from 943 nm out; 85 nm from the line		340/25 11°	350/37 9°	350/34 6°	340/39 -7°	340/43 -19°	340/55 -32°	330/58 -42°	320/37 -50°
RDU	used from 993 nm out; 66 nm from the line	330/30	340/24 12°	330/26 7°	320/30 3°	330/39 -8°	310/30 -20°	300/33 -33°	310/34 -39°	310/41 -47°

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
SAT San Antonio, TX	departure	marginal VFR Sky: a broken layer at 1,600 feet, a broken layer at 2,500 feet	from the east (100°) at 4 knots	10+ mi	1,600 ft	809 ft	6:51 am CDT (11:51 UTC)
BAZ New Braunfels, TX	20 nm out, 5 nm east of the line, tower	marginal VFR Sky: overcast at 1,900 feet	calm	10+ mi	1,900 ft	658 ft	11:51 UTC
CLL College Station, TX	129 nm out, 7 nm northwest of the line, tower	VFR	from the east-southeast (120°) at 7 knots	10+ mi	none	320 ft	11:53 UTC
LFK Lufkin, TX	218 nm out, 4 nm northwest of the line	VFR	from the east-southeast (120°) at 4 knots	10+ mi	none	295 ft	11:53 UTC
MLU Monroe, LA	377 nm out, 15 nm northwest of the line, tower	VFR	calm	9 mi	none	78 ft	11:53 UTC
OSX Kosciusko, MS	506 nm out, 4 nm south of the line	no report just now				494 ft
GTR Columbus/W Point/Starkville, MS	556 nm out, 3 nm southeast of the line, tower	VFR	from the east-southeast (120°) at 3 knots	10+ mi	none	264 ft	11:56 UTC
JFX Jasper, AL	625 nm out, 2 nm southeast of the line	low IFR Sky: a broken layer at 200 feet Weather: mist	calm	1.5 mi	200 ft	482 ft	11:55 UTC
CHA Chattanooga, TN	744 nm out, 24 nm north of the line, tower	low IFR Sky: sky obscured at 200 feet Weather: fog	from the west (270°) at 3 knots	0.13 mi	200 ft	682 ft	11:53 UTC
AVL Asheville, NC	883 nm out, 4 nm west of the line, tower	marginal VFR Sky: overcast at 1,600 feet	variable at 6 knots	10+ mi	1,600 ft	2,163 ft	11:54 UTC
HKY Hickory, NC	943 nm out, 4 nm west of the line, tower	VFR	from the west (280°) at 4 knots	10+ mi	none	1,189 ft	11:53 UTC
GSO Greensboro, NC	destination	VFR Sky: a few clouds at 11,000 feet	from the west-northwest (290°) at 9 knots	10+ mi	none	925 ft	7:54 am EDT (11:54 UTC)

The highest airport on this list sits at 2,163 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.

At GSO when you get there the forecast at the estimated arrival, 3:49 pm EDT (19:49 UTC)

Wind from the northwest at 11 knots, gusting to 19, visibility more than 6 miles, scattered clouds at 3,000 feet, scattered clouds at 10,000 feet VFR

The whole forecast for GSO

From Mon 8:00 am EDT (12:00 UTC): wind from the west at 9 knots, visibility more than 6 miles, a few clouds at 3,000 feet, a few clouds at 10,000 feet
From Mon 10:00 am EDT (14:00 UTC): wind from the northwest at 11 knots, gusting to 19, visibility more than 6 miles, scattered clouds at 3,000 feet, scattered clouds at 10,000 feet
From Mon 5:30 pm EDT (21:30 UTC): wind from the northwest at 4 knots, visibility more than 6 miles, scattered clouds at 25,000 feet

The forecast for SAT, the departure

From Mon 7:00 am CDT (12:00 UTC): wind from the east-southeast at 5 knots, visibility more than 6 miles, a broken layer at 1,500 feet
At times between Mon 8:00 am CDT (13:00 UTC) and 11:00 am CDT (16:00 UTC): a broken layer at 2,500 feet
From Mon 12:00 pm CDT (17:00 UTC): wind from the south-southeast at 12 knots, visibility more than 6 miles, a broken layer at 3,500 feet
From Tue 1:00 am CDT (06:00 UTC): wind from the south-southeast at 9 knots, visibility more than 6 miles, overcast at 1,500 feet
At times between Tue 4:00 am CDT (09:00 UTC) and 7:00 am CDT (12:00 UTC): a broken layer at 800 feet

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

No temporary flight restriction on or near this route right now.

Daylight

Sunset at SAT 7:05 pm CDT (00:05 UTC), at GSO 6:48 pm EDT (22:48 UTC) (civil twilight ends 7:13 pm EDT (23:13 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 lower Mississippi valley · loop National Weather Service

Radar now, the Southeast · 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 Antonio International, Piedmont Triad International.