Plan a flight · Sun 7:48 pm CDT (00:48 UTC)

William P Hobby Airport to Scott Afb/Midamerica St. Louis Airport HOU → BLV

599 nautical miles (689 statute miles) northeast on a straight line, true course 025°, about 022° magnetic at the departure end (variation 3E). At 120 knots that is 4 h 30 min at the quickest height in today's winds (9,500 ft, a 13-knot tailwind), arriving about 12:18 am CDT (05:18 UTC), after sunset at the destination. Right now HOU is VFR, wind from the south-southeast (150°) at 8 knots; BLV 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: 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

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 HOU.

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

A320 at 26,500 ft, 47 nm northwest, 5:46 pm CDT (22:46 UTC): moderate clear-air turbulence, remarks: ZFW86. 160 nm along the route, 47 nm northwest of the line.
as filed, and in English
```
GGG UA /OV GGG/TM 2246/FL265/TP A320/TB MOD CAT/RM ZFW86
```
Report
a routine report filed through GGG
Where
over GGG
Time
22:46 UTC
Height
at 26,500 ft
Aircraft
A320
Turbulence
moderate clear-air turbulence
Remarks
ZFW86
B39M at 27,000 ft, 12 nm west, 7:42 pm CDT (00:42 UTC): light chop turbulence, remarks: zhu. At the departure end, 12 nm west of the line.
as filed, and in English
```
IAH UA /OV IH340035/TM 0042/FL270/TP B39M/TB LT CHOP DURC/RM ZHU
```
Report
a routine report filed through IAH
Where
IH340035
Time
00:42 UTC
Height
at 27,000 ft
Aircraft
B39M
Turbulence
lt chop during the climb
Remarks
zhu
A320 at 24,000 ft, 12 nm west, 5:07 pm CDT (22:07 UTC): light chop turbulence, remarks: during the climb zhu. At the departure end, 12 nm west 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
BE35 at 4,000 ft, 3 nm northeast, 5:03 pm CDT (22:03 UTC): light clear-air turbulence above 4,000 ft, wind 133° at 26 knots, remarks: ZFW30. 160 nm along the route, 3 nm northeast of the line.
as filed, and in English
```
BAD UA /OV EMG210025/TM 2203/FL040/TP BE35/WV 133026 KT/TB LGT CAT 040/RM ZFW30
```
Report
a routine report filed through BAD
Where
25 nm southwest (210°) of EMG
Time
22:03 UTC
Height
at 4,000 ft
Aircraft
BE35
Wind
wind from 133° at 26 knots knots
Turbulence
light clear-air turbulence at 4,000 ft
Remarks
ZFW30
CRJ7 at 36,000 ft, 27 nm northwest, 7:10 pm CDT (00:10 UTC): no turbulence, remarks: ZME20. 309 nm along the route, 27 nm northwest of the line.
as filed, and in English
```
HOT UA /OV HOT/TM 0010/FL360/TP CRJ7/TB NEG/RM ZME20
```
Report
a routine report filed through HOT
Where
over HOT
Time
00:10 UTC
Height
at 36,000 ft
Aircraft
CRJ7
Turbulence
none
Remarks
ZME20
G280 at 41,000 ft, 33 nm southeast, 5:12 pm CDT (22:12 UTC): light turbulence, remarks: ZME44. 319 nm along the route, 33 nm southeast of the line.
as filed, and in English
```
PBF UA /OV PBF180005/TM 2212/FL410/TP G280/TB CONS LGT/RM ZME44
```
Report
a routine report filed through PBF
Where
5 nm south (180°) of PBF
Time
22:12 UTC
Height
at 41,000 ft
Aircraft
G280
Turbulence
continuous light
Remarks
ZME44

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 5 forecast points nearest it (HOU, SHV, LIT, CGI, STL). 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	210° at 11 kt	−11 kt		131 kt	4 h 34 min	12:22 am CDT (05:22 UTC)
5,500 ft	230° at 11 kt	−10 kt		130 kt	4 h 36 min	12:24 am CDT (05:24 UTC)
7,500 ft	240° at 14 kt	−12 kt	14 °C	132 kt	4 h 32 min	12:20 am CDT (05:20 UTC)
9,500 ft	240° at 17 kt	−13 kt	11 °C	133 kt	4 h 30 min	12:18 am CDT (05:18 UTC)
11,500 ft	260° at 16 kt	−10 kt	7 °C	130 kt	4 h 36 min	12:24 am CDT (05:24 UTC)
13,500 ft	270° at 16 kt	−6 kt	3 °C	126 kt	4 h 45 min	12:33 am CDT (05:33 UTC)
15,500 ft	280° at 15 kt	−3 kt	0 °C	123 kt	4 h 52 min	12:40 am CDT (05:40 UTC)
17,500 ft	300° at 15 kt	0	-4 °C	120 kt	5 h	12:48 am CDT (05:48 UTC)
18,000 ft FL180	300° at 15 kt	+1 kt	-5 °C	119 kt	5 h 02 min	12:50 am CDT (05:50 UTC)
24,000 ft FL240	310° at 21 kt	+4 kt	-16 °C	116 kt	5 h 10 min	12:58 am CDT (05:58 UTC)
30,000 ft FL300	310° at 38 kt	+9 kt	-31 °C	111 kt	5 h 24 min	1:12 am CDT (06:12 UTC)
34,000 ft FL340	310° at 41 kt	+11 kt	-41 °C	109 kt	5 h 30 min	1:18 am CDT (06:18 UTC)
39,000 ft FL390	310° at 44 kt	+12 kt	-52 °C	108 kt	5 h 33 min	1:21 am CDT (06:21 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
HOU	used from 0 nm out; 25 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°
SHV	used from 100 nm out; 59 nm from the line	190/11	230/19 17°	230/26 12°	260/15 7°	280/16 -4°	300/17 -15°	300/34 -30°	300/31 -41°	310/42 -52°
LIT	used from 249 nm out; 68 nm from the line	220/12	250/12 17°	250/18 12°	260/22 6°	310/14 -5°	310/25 -17°	310/40 -31°	310/38 -41°	310/46 -52°
CGI	used from 449 nm out; 78 nm from the line	250/10	290/12 17°	290/18 11°	300/22 5°	320/25 -8°	330/30 -18°	320/53 -33°	320/66 -42°	320/56 -50°
STL	used from 549 nm out; 37 nm from the line	210/13	260/16 17°	270/21 10°	280/24 5°	310/20 -7°	320/22 -18°	320/44 -33°	320/59 -43°	310/69 -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
HOU Houston, TX	departure	VFR Sky: scattered clouds at 25,000 feet	from the south-southeast (150°) at 8 knots	10+ mi	none	46 ft	6:53 pm CDT (23:53 UTC)
IAH Houston, TX	20 nm out, 12 nm west of the line, tower	VFR Sky: a broken layer at 25,000 feet	from the east-southeast (120°) at 11 knots	10+ mi	25,000 ft	95 ft	23:53 UTC
LFK Lufkin, TX	100 nm out, 17 nm west of the line	VFR	from the south-southeast (150°) at 5 knots	10+ mi	none	295 ft	23:53 UTC
OCH Nacogdoches, TX	120 nm out, 24 nm west of the line	reported, no category	from the southeast (130°) at 4 knots		none	343 ft	23:56 UTC
DTN Shreveport, LA	190 nm out, 5 nm northwest of the line, tower	VFR	from the south-southeast (160°) at 4 knots	10+ mi	none	179 ft	23:53 UTC
CDH Camden, AR	269 nm out, 11 nm east of the line	VFR	from the southwest (230°) at 7 knots	9 mi	none	129 ft	22:15 UTC
LIT Little Rock, AR	339 nm out, 6 nm east of the line, tower	VFR Sky: a few clouds at 16,000 feet, a few clouds at 25,000 feet	from the southwest (220°) at 5 knots	10+ mi	none	266 ft	23:53 UTC
BVX Batesville, AR	409 nm out, 3 nm southeast of the line	VFR	calm	10+ mi	none	465 ft	23:56 UTC
CVK Ash Flat, AR	439 nm out, 9 nm northwest of the line	no report just now				717 ft
PYN Piedmont, MO	509 nm out, 6 nm south of the line	no report just now				466 ft
FAM Farmington, MO	549 nm out, 5 nm southwest of the line	VFR	calm	10+ mi	none	945 ft	20:07 UTC
BLV Belleville, IL	destination	VFR	calm	10+ mi	none	459 ft	6:55 pm CDT (23:55 UTC)

The highest airport on this list sits at 945 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.

At BLV when you get there the forecast at the estimated arrival, 12:18 am CDT (05:18 UTC)

Wind from the south-southwest at 6 knots, clear skies

Changing between Mon 12:00 am CDT (05:00 UTC) and 1:00 am CDT (06:00 UTC) to: wind light and variable, low-level wind shear, clear skies

The whole forecast for BLV

From Sun 7:00 pm CDT (00:00 UTC): wind from the south-southwest at 6 knots, clear skies
Changing between Mon 12:00 am CDT (05:00 UTC) and 1:00 am CDT (06:00 UTC) to: wind light and variable, low-level wind shear, clear skies
Changing between Mon 9:00 am CDT (14:00 UTC) and 10:00 am CDT (15:00 UTC) to: wind from the southwest at 10 knots, gusting to 20, a few clouds at 30,000 feet

The forecast for HOU, the departure

From Sun 7:00 pm CDT (00:00 UTC): wind from the southeast at 12 knots, visibility more than 6 miles, a few clouds at 25,000 feet
From Sun 8:00 pm CDT (01:00 UTC): wind from the southeast at 7 knots, visibility more than 6 miles, scattered clouds at 25,000 feet
From Mon 4:00 am CDT (09:00 UTC): wind from the east-southeast at 5 knots, visibility more than 6 miles, scattered clouds at 2,500 feet, scattered clouds at 25,000 feet
From Mon 11:00 am CDT (16:00 UTC): wind from the southeast at 11 knots, visibility more than 6 miles, scattered clouds at 3,500 feet, a broken layer at 25,000 feet
30% chance between Mon 11:00 am CDT (16:00 UTC) and 1:00 pm CDT (18:00 UTC): light rain showers
From Mon 5:00 pm CDT (22:00 UTC): wind from the southeast at 13 knots, visibility more than 6 miles, overcast at 5,000 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 HOU 6:55 pm CDT (23:55 UTC), at BLV 6:25 pm CDT (23:25 UTC) (civil twilight ends 6:52 pm CDT (23:52 UTC)). At 120 knots the arrival at BLV is before sunrise there (7:05 am CDT (12:05 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 upper Mississippi valley · 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: William P Hobby Airport, Scott Afb/Midamerica St. Louis Airport.