Plan a flight · Tue 11:01 am CDT (16:01 UTC)

Watertown Regional to Yellowstone Regional ATY → COD

506 nautical miles (583 statute miles) west on a straight line, true course 272°, about 266° magnetic at the departure end (variation 6E). At 120 knots that is 4 h 26 min at the quickest height in today's winds (4,500 ft, a 6-knot headwind), arriving about 2:27 pm MDT (20:27 UTC). Right now ATY is VFR, wind from the north-northwest (330°) at 10 knots; COD is IFR, 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

AIRMET TANGO 1W: moderate turbulence above 18,000 ft from 23,000 ft to 35,000 ft. Over the first 348 nm of the route.
AIRMET ZULU 1C: moderate icing up to 20,000 ft. Over the last 268 nm of the route.
AIRMET SIERRA 9E: low cloud or poor visibility (IFR conditions) (due to ceilings below 1,000 ft, visibility below 3 miles, precipitation, mist). Over the last 179 nm of the route.
AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the last 79 nm of the route.
AIRMET TANGO 1W: moderate turbulence above 18,000 ft from 18,000 ft to 39,000 ft. Over the last 70 nm of the route.

Turbulence AIRMET in force: moderate turbulence from 23,000 ft to 35,000 ft, over the first 348 nm of the route; AIRMET in force: moderate turbulence from 18,000 ft to 39,000 ft, over the last 70 nm of the route. 2 pilot reports of turbulence near the line in the last three hours: light chop turbulence, at 28,000 ft, 7 nm north, 9:17 am CDT (14:17 UTC); light chop turbulence, at 26,000 ft, 11 nm northwest, 8:50 am CDT (13:50 UTC). The government's turbulence forecast map ↗

Icing AIRMET in force: moderate icing up to 20,000 ft, over the last 268 nm of the route. No pilot has reported icing near the line in the last three hours. The freezing level is about 11,000 ft (from the winds-aloft temperatures), so icing is possible in cloud above that. The government's icing forecast map ↗

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 ATY.

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

B739 at 34,000 ft, 33 nm south, 10:41 am CDT (15:41 UTC): no turbulence. 50 nm along the route, 33 nm south of the line.
as filed, and in English
```
HON UA /OV HON/TM 1541/FL340/TP B739/TB NEG
```
Report
a routine report filed through HON
Where
over HON
Time
15:41 UTC
Height
at 34,000 ft
Aircraft
B739
Turbulence
none
B39M at 34,000 ft, 29 nm north, 8:03 am CDT (13:03 UTC): no turbulence. 50 nm along the route, 29 nm north of the line.
as filed, and in English
```
ABR UA /OV ABR/TM 1303/FL340/TP B39M/TB NEG
```
Report
a routine report filed through ABR
Where
over ABR
Time
13:03 UTC
Height
at 34,000 ft
Aircraft
B39M
Turbulence
none
UAL1233 at 28,000 ft, 7 nm north, 9:17 am CDT (14:17 UTC): light chop turbulence, wind 248° at 68 knots. 70 nm along the route, 7 nm north of the line.
as filed, and in English
```
ARP UAL1233 4503N 09851W 1417 F280 248/068KT TB LGT CHOP IC
```
Report
a routine report filed through ARP
B739 at 32,000 ft, 32 nm south, 8:40 am CDT (13:40 UTC): no turbulence. 129 nm along the route, 32 nm south of the line.
as filed, and in English
```
PIR UA /OV PIR/TM 1340/FL320/TP B739/TB NEG
```
Report
a routine report filed through PIR
Where
over PIR
Time
13:40 UTC
Height
at 32,000 ft
Aircraft
B739
Turbulence
none
BE30 at 26,000 ft, 11 nm northwest, 8:50 am CDT (13:50 UTC): light chop turbulence. 189 nm along the route, 11 nm northwest of the line.
as filed, and in English
```
MBG UA /OV DPR/TM 1350/FL260/TP BE30/TB CONS LGT CHOP
```
Report
a routine report filed through MBG
Where
over DPR
Time
13:50 UTC
Height
at 26,000 ft
Aircraft
BE30
Turbulence
continuous light chop

Winds aloft along the route, and the time en route the forecast for use 14:00–21:00 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 5 forecast points nearest it (ABR, PIR, RAP, MLS, BIL). 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	280° at 6 kt	+6 kt	5 °C	114 kt	4 h 26 min	2:27 pm MDT (20:27 UTC)
6,500 ft	280° at 7 kt	+7 kt	6 °C	113 kt	4 h 29 min	2:30 pm MDT (20:30 UTC)
8,500 ft	260° at 10 kt	+10 kt	5 °C	110 kt	4 h 36 min	2:37 pm MDT (20:37 UTC)
10,500 ft	250° at 13 kt	+12 kt	1 °C	108 kt	4 h 41 min	2:42 pm MDT (20:42 UTC)
12,500 ft	240° at 15 kt	+13 kt	-2 °C	107 kt	4 h 44 min	2:45 pm MDT (20:45 UTC)
14,500 ft	240° at 17 kt	+15 kt	-6 °C	105 kt	4 h 49 min	2:50 pm MDT (20:50 UTC)
16,500 ft	240° at 19 kt	+16 kt	-11 °C	104 kt	4 h 52 min	2:53 pm MDT (20:53 UTC)
18,000 ft FL180	240° at 20 kt	+17 kt	-14 °C	103 kt	4 h 55 min	2:56 pm MDT (20:56 UTC)
24,000 ft FL240	240° at 24 kt	+21 kt	-26 °C	99 kt	5 h 07 min	3:08 pm MDT (21:08 UTC)
30,000 ft FL300	240° at 58 kt	+52 kt	-38 °C	68 kt	7 h 26 min	5:27 pm MDT (23:27 UTC)
34,000 ft FL340	240° at 82 kt	+69 kt	-42 °C	51 kt	9 h 55 min	7:56 pm MDT (01:56 UTC)
39,000 ft FL390	230° at 86 kt	+68 kt	-47 °C	52 kt	9 h 44 min	7:45 pm MDT (01:45 UTC)

Based on data from the 13th at 12:00 UTC; valid on the 13th at 18:00 UTC for use 14:00 to 21:00 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
ABR	used from 0 nm out; 43 nm from the line	320/6	300/18 8°	270/26 6°	250/29 -1°	250/40 -14°	240/45 -24°	250/81 -36°	240/119 -40°	240/119 -47°
PIR	used from 99 nm out; 34 nm from the line		300/8 8°	240/13 6°	240/21 1°	240/33 -13°	230/37 -24°	240/89 -35°	240/119 -40°	230/120 -47°
RAP	used from 199 nm out; 58 nm from the line		220/9 4°	230/10 4°	230/12 1°	220/23 -13°	220/27 -26°	240/68 -37°	230/101 -41°	230/113 -46°
MLS	used from 348 nm out; 101 nm from the line		260/10 2°	260/9 2°	250/13 -2°	230/14 -15°	270/16 -28°	250/26 -40°	240/31 -46°	220/35 -45°
BIL	used from 397 nm out; 93 nm from the line		010/7	L/V 0°	L/V -3°	070/8 -15°	340/10 -28°	240/10 -41°	220/16 -47°	190/15 -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
ATY Watertown, SD	departure	VFR Sky: scattered clouds at 1,700 feet, overcast at 11,000 feet	from the north-northwest (330°) at 10 knots	10+ mi	11,000 ft	1,749 ft	10:53 am CDT (15:53 UTC)
MKA Miller, SD	79 nm out, 25 nm south of the line	no report just now				1,569 ft
EFC Belle Fourche, SD	288 nm out, 7 nm southeast of the line	no report just now				3,190 ft
GCC Gillette, WY	358 nm out, 25 nm south of the line	IFR Sky: overcast at 800 feet	calm	10+ mi	800 ft	4,365 ft	15:53 UTC
SHR Sheridan, WY	417 nm out, 6 nm north of the line	VFR Sky: scattered clouds at 1,000 feet, overcast at 5,000 feet	calm	10+ mi	5,000 ft	4,021 ft	15:53 UTC
GEY Greybull, WY	467 nm out, 5 nm south of the line	marginal VFR Sky: scattered clouds at 1,900 feet, a broken layer at 2,900 feet, overcast at 5,000 feet	from the north (010°) at 5 knots	10+ mi	2,900 ft	3,941 ft	15:53 UTC
COD Cody, WY	destination	IFR Sky: overcast at 800 feet Weather: light rain, mist	calm	1 mi	800 ft	5,102 ft	9:56 am MDT (15:56 UTC)

The highest airport on this list sits at 5,102 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.

The codes as issued, and in English, for every airport in the table

ATY Watertown, SD

the observation and the forecast as issued, and in English

METAR KATY 131553Z AUTO 33010KT 10SM SCT017 OVC110 09/04 A2996 RMK AO2 SLP153 T00940039

METAR: a routine hourly observation
KATY: the station, KATY
131553Z: observed 10:53 am CDT (15:53 UTC)
AUTO: fully automated report, nobody checked it
33010KT: wind from the north-northwest at 10 knots
10SM: visibility 10 miles
SCT017: scattered clouds at 1,700 feet
OVC110: overcast at 11,000 feet
09/04: temperature 9 °C (48 °F), dew point 4 °C (39 °F)
A2996: altimeter setting 29.96 inches of mercury
RMK: remarks follow
AO2: automated station with a precipitation sensor
SLP153: sea-level pressure 1015.3 hPa
T00940039: temperature 9.4 °C (49 °F), dew point 3.9 °C (39 °F)

TAF KATY 131553Z 1316/1412 34010KT P6SM FEW013 SCT090 FM131700 32010KT P6SM BKN022 FM131900 32010KT P6SM BKN035 FM140000 36006KT P6SM SCT050

TAF: a terminal aerodrome forecast: the weather expected at the airport, usually for the next 24 or 30 hours
KATY: the station, KATY
131553Z: issued 10:53 am CDT (15:53 UTC)
1316/1412 34010KT P6SM FEW013 SCT090: valid from Tue 11:00 am CDT (16:00 UTC) to Wed 7:00 am CDT (12:00 UTC): wind from the north-northwest at 10 knots, visibility more than 6 miles, a few clouds at 1,300 feet, scattered clouds at 9,000 feet
FM131700 32010KT P6SM BKN022: from Tue 12:00 pm CDT (17:00 UTC): wind from the northwest at 10 knots, visibility more than 6 miles, a broken layer at 2,200 feet
FM131900 32010KT P6SM BKN035: from Tue 2:00 pm CDT (19:00 UTC): wind from the northwest at 10 knots, visibility more than 6 miles, a broken layer at 3,500 feet
FM140000 36006KT P6SM SCT050: from Tue 7:00 pm CDT (00:00 UTC): wind from the north at 6 knots, visibility more than 6 miles, scattered clouds at 5,000 feet

GCC Gillette, WY

the observation and the forecast as issued, and in English

METAR KGCC 131553Z AUTO 00000KT 10SM OVC008 05/03 A3001 RMK AO2 SLP172 T00500033 $

METAR: a routine hourly observation
KGCC: the station, KGCC
131553Z: observed 15:53 UTC on the 13th
AUTO: fully automated report, nobody checked it
00000KT: wind calm
10SM: visibility 10 miles
OVC008: overcast at 800 feet
05/03: temperature 5 °C (41 °F), dew point 3 °C (37 °F)
A3001: altimeter setting 30.01 inches of mercury
RMK: remarks follow
AO2: automated station with a precipitation sensor
SLP172: sea-level pressure 1017.2 hPa
T00500033: temperature 5 °C (41 °F), dew point 3.3 °C (38 °F)
$: the station needs maintenance

TAF KGCC 131203Z 1312/1412 09005KT P6SM SCT007 OVC015 TEMPO 1312/1316 BKN007 FM131900 36006KT P6SM BKN012 OVC020 FM140000 33005KT P6SM BKN020

TAF: a terminal aerodrome forecast: the weather expected at the airport, usually for the next 24 or 30 hours
KGCC: the station, KGCC
131203Z: issued 12:03 UTC on the 13th
1312/1412 09005KT P6SM SCT007 OVC015: valid from Tue 12:00 UTC to Wed 12:00 UTC: wind from the east at 5 knots, visibility more than 6 miles, scattered clouds at 700 feet, overcast at 1,500 feet
TEMPO 1312/1316 BKN007: at times from Tue 12:00 UTC to Tue 16:00 UTC: a broken layer at 700 feet
FM131900 36006KT P6SM BKN012 OVC020: from Tue 19:00 UTC: wind from the north at 6 knots, visibility more than 6 miles, a broken layer at 1,200 feet, overcast at 2,000 feet
FM140000 33005KT P6SM BKN020: from Wed 00:00 UTC: wind from the north-northwest at 5 knots, visibility more than 6 miles, a broken layer at 2,000 feet

SHR Sheridan, WY

the observation and the forecast as issued, and in English

METAR KSHR 131553Z AUTO 00000KT 10SM SCT010 OVC050 05/03 A3003 RMK AO2 SLP182 T00500028 $

METAR: a routine hourly observation
KSHR: the station, KSHR
131553Z: observed 15:53 UTC on the 13th
AUTO: fully automated report, nobody checked it
00000KT: wind calm
10SM: visibility 10 miles
SCT010: scattered clouds at 1,000 feet
OVC050: overcast at 5,000 feet
05/03: temperature 5 °C (41 °F), dew point 3 °C (37 °F)
A3003: altimeter setting 30.03 inches of mercury
RMK: remarks follow
AO2: automated station with a precipitation sensor
SLP182: sea-level pressure 1018.2 hPa
T00500028: temperature 5 °C (41 °F), dew point 2.8 °C (37 °F)
$: the station needs maintenance

TAF KSHR 131120Z 1312/1412 VRB06KT P6SM VCSH FEW006 OVC012 FM131700 VRB06KT P6SM VCSH FEW012 BKN025 OVC060 FM132000 VRB06KT P6SM VCSH BKN035 OVC060 FM140100 VRB06KT P6SM SCT040 BKN060 OVC100 FM140500 32008KT P6SM FEW040 SCT150

TAF: a terminal aerodrome forecast: the weather expected at the airport, usually for the next 24 or 30 hours
KSHR: the station, KSHR
131120Z: issued 11:20 UTC on the 13th
1312/1412 VRB06KT P6SM VCSH FEW006 OVC012: valid from Tue 12:00 UTC to Wed 12:00 UTC: wind light and variable, visibility more than 6 miles, vcsh, a few clouds at 600 feet, overcast at 1,200 feet
FM131700 VRB06KT P6SM VCSH FEW012 BKN025 OVC060: from Tue 17:00 UTC: wind light and variable, visibility more than 6 miles, vcsh, a few clouds at 1,200 feet, a broken layer at 2,500 feet, overcast at 6,000 feet
FM132000 VRB06KT P6SM VCSH BKN035 OVC060: from Tue 20:00 UTC: wind light and variable, visibility more than 6 miles, vcsh, a broken layer at 3,500 feet, overcast at 6,000 feet
FM140100 VRB06KT P6SM SCT040 BKN060 OVC100: from Wed 01:00 UTC: wind light and variable, visibility more than 6 miles, scattered clouds at 4,000 feet, a broken layer at 6,000 feet, overcast at 10,000 feet
FM140500 32008KT P6SM FEW040 SCT150: from Wed 05:00 UTC: wind from the northwest at 8 knots, visibility more than 6 miles, a few clouds at 4,000 feet, scattered clouds at 15,000 feet

GEY Greybull, WY

the observation as issued, and in English

METAR KGEY 131553Z AUTO 01005KT 10SM SCT019 BKN029 OVC050 07/03 A3001 RMK AO2 SLP170 T00670033

METAR: a routine hourly observation
KGEY: the station, KGEY
131553Z: observed 15:53 UTC on the 13th
AUTO: fully automated report, nobody checked it
01005KT: wind from the north at 5 knots
10SM: visibility 10 miles
SCT019: scattered clouds at 1,900 feet
BKN029: a broken layer at 2,900 feet
OVC050: overcast at 5,000 feet
07/03: temperature 7 °C (45 °F), dew point 3 °C (37 °F)
A3001: altimeter setting 30.01 inches of mercury
RMK: remarks follow
AO2: automated station with a precipitation sensor
SLP170: sea-level pressure 1017.0 hPa
T00670033: temperature 6.7 °C (44 °F), dew point 3.3 °C (38 °F)

COD Cody, WY

the observation and the forecast as issued, and in English

METAR KCOD 131556Z AUTO 00000KT 1SM -RA BR OVC008 05/03 A3005 RMK AO2 RAB54 SLP184 P0003 T00500028 $

METAR: a routine hourly observation
KCOD: the station, KCOD
131556Z: observed 9:56 am MDT (15:56 UTC)
AUTO: fully automated report, nobody checked it
00000KT: wind calm
1SM: visibility 1 mile
-RA: light rain
BR: mist
OVC008: overcast at 800 feet
05/03: temperature 5 °C (41 °F), dew point 3 °C (37 °F)
A3005: altimeter setting 30.05 inches of mercury
RMK: remarks follow
AO2: automated station with a precipitation sensor
RAB54: rain began 54 minutes past the hour
SLP184: sea-level pressure 1018.4 hPa
P0003: 0.03 inches of precipitation in the last hour
T00500028: temperature 5 °C (41 °F), dew point 2.8 °C (37 °F)
$: the station needs maintenance

TAF KCOD 131121Z 1311/1412 06005KT P6SM VCSH SCT004 BKN008 OVC020 FM131600 04007KT P6SM OVC020 FM132000 36008KT P6SM BKN025 PROB30 1320/1401 5SM -SHRA BKN015 FM140800 16007KT P6SM BKN035

TAF: a terminal aerodrome forecast: the weather expected at the airport, usually for the next 24 or 30 hours
KCOD: the station, KCOD
131121Z: issued 5:21 am MDT (11:21 UTC)
1311/1412 06005KT P6SM VCSH SCT004 BKN008 OVC020: valid from Tue 5:00 am MDT (11:00 UTC) to Wed 6:00 am MDT (12:00 UTC): wind from the east-northeast at 5 knots, visibility more than 6 miles, vcsh, scattered clouds at 400 feet, a broken layer at 800 feet, overcast at 2,000 feet
FM131600 04007KT P6SM OVC020: from Tue 10:00 am MDT (16:00 UTC): wind from the northeast at 7 knots, visibility more than 6 miles, overcast at 2,000 feet
FM132000 36008KT P6SM BKN025: from Tue 2:00 pm MDT (20:00 UTC): wind from the north at 8 knots, visibility more than 6 miles, a broken layer at 2,500 feet
PROB30 1320/1401 5SM -SHRA BKN015: a 30% chance from Tue 2:00 pm MDT (20:00 UTC) to Tue 7:00 pm MDT (01:00 UTC): visibility 5 miles, light rain showers, a broken layer at 1,500 feet
FM140800 16007KT P6SM BKN035: from Wed 2:00 am MDT (08:00 UTC): wind from the south-southeast at 7 knots, visibility more than 6 miles, a broken layer at 3,500 feet

At COD when you get there the forecast at the estimated arrival, 2:27 pm MDT (20:27 UTC)

Wind from the north at 8 knots, visibility more than 6 miles, a broken layer at 2,500 feet marginal VFR

30% chance between Tue 2:00 pm MDT (20:00 UTC) and 7:00 pm MDT (01:00 UTC): visibility 5 miles, light rain showers, a broken layer at 1,500 feet marginal VFR

The whole forecast for COD

From Tue 5:00 am MDT (11:00 UTC): wind from the east-northeast at 5 knots, visibility more than 6 miles, showers nearby, scattered clouds at 400 feet, a broken layer at 800 feet and more above
From Tue 10:00 am MDT (16:00 UTC): wind from the northeast at 7 knots, visibility more than 6 miles, overcast at 2,000 feet
From Tue 2:00 pm MDT (20:00 UTC): wind from the north at 8 knots, visibility more than 6 miles, a broken layer at 2,500 feet
30% chance between Tue 2:00 pm MDT (20:00 UTC) and 7:00 pm MDT (01:00 UTC): visibility 5 miles, light rain showers, a broken layer at 1,500 feet
From Wed 2:00 am MDT (08:00 UTC): wind from the south-southeast at 7 knots, visibility more than 6 miles, a broken layer at 3,500 feet

The forecast for ATY, the departure

From Tue 11:00 am CDT (16:00 UTC): wind from the north-northwest at 10 knots, visibility more than 6 miles, a few clouds at 1,300 feet, scattered clouds at 9,000 feet
From Tue 12:00 pm CDT (17:00 UTC): wind from the northwest at 10 knots, visibility more than 6 miles, a broken layer at 2,200 feet
From Tue 2:00 pm CDT (19:00 UTC): wind from the northwest at 10 knots, visibility more than 6 miles, a broken layer at 3,500 feet
From Tue 7:00 pm CDT (00:00 UTC): wind from the north at 6 knots, visibility more than 6 miles, scattered clouds at 5,000 feet

COD:

the forecast as issued, and in English

TAF KCOD 131121Z 1311/1412 06005KT P6SM VCSH SCT004 BKN008 OVC020 FM131600 04007KT P6SM OVC020 FM132000 36008KT P6SM BKN025 PROB30 1320/1401 5SM -SHRA BKN015 FM140800 16007KT P6SM BKN035

TAF: a terminal aerodrome forecast: the weather expected at the airport, usually for the next 24 or 30 hours
KCOD: the station, KCOD
131121Z: issued 5:21 am MDT (11:21 UTC)
1311/1412 06005KT P6SM VCSH SCT004 BKN008 OVC020: valid from Tue 5:00 am MDT (11:00 UTC) to Wed 6:00 am MDT (12:00 UTC): wind from the east-northeast at 5 knots, visibility more than 6 miles, vcsh, scattered clouds at 400 feet, a broken layer at 800 feet, overcast at 2,000 feet
FM131600 04007KT P6SM OVC020: from Tue 10:00 am MDT (16:00 UTC): wind from the northeast at 7 knots, visibility more than 6 miles, overcast at 2,000 feet
FM132000 36008KT P6SM BKN025: from Tue 2:00 pm MDT (20:00 UTC): wind from the north at 8 knots, visibility more than 6 miles, a broken layer at 2,500 feet
PROB30 1320/1401 5SM -SHRA BKN015: a 30% chance from Tue 2:00 pm MDT (20:00 UTC) to Tue 7:00 pm MDT (01:00 UTC): visibility 5 miles, light rain showers, a broken layer at 1,500 feet
FM140800 16007KT P6SM BKN035: from Wed 2:00 am MDT (08:00 UTC): wind from the south-southeast at 7 knots, visibility more than 6 miles, a broken layer at 3,500 feet

ATY:

the forecast as issued, and in English

TAF KATY 131553Z 1316/1412 34010KT P6SM FEW013 SCT090 FM131700 32010KT P6SM BKN022 FM131900 32010KT P6SM BKN035 FM140000 36006KT P6SM SCT050

TAF: a terminal aerodrome forecast: the weather expected at the airport, usually for the next 24 or 30 hours
KATY: the station, KATY
131553Z: issued 10:53 am CDT (15:53 UTC)
1316/1412 34010KT P6SM FEW013 SCT090: valid from Tue 11:00 am CDT (16:00 UTC) to Wed 7:00 am CDT (12:00 UTC): wind from the north-northwest at 10 knots, visibility more than 6 miles, a few clouds at 1,300 feet, scattered clouds at 9,000 feet
FM131700 32010KT P6SM BKN022: from Tue 12:00 pm CDT (17:00 UTC): wind from the northwest at 10 knots, visibility more than 6 miles, a broken layer at 2,200 feet
FM131900 32010KT P6SM BKN035: from Tue 2:00 pm CDT (19:00 UTC): wind from the northwest at 10 knots, visibility more than 6 miles, a broken layer at 3,500 feet
FM140000 36006KT P6SM SCT050: from Tue 7:00 pm CDT (00:00 UTC): wind from the north at 6 knots, visibility more than 6 miles, scattered clouds 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.

Notices to air missions closures and things out of service at both ends; airspace, navigation aids and obstructions near the line

ATY: 15 notices in force. all of them, grouped →

COD: 14 notices in force. all of them, grouped →

7 notices near the line (airspace and special activity within 25 nm, navigation aids within 25 nm, obstructions within 5 nm):

Obstruction tower lights (ASR 1037042) 44°52′N 97°48′W (4.5 nautical miles WSW 8D7) 2074.8FT (318.9FT above ground level) out of service until Mon 23 Nov, 2:23 am CST (08:23 UTC) · 30 nm along the route, 3 nm off the line · 8D7 08/088
as issued
```
!HON 08/088 8D7 OBST TOWER LGT (ASR 1037042) 445243.50N0974851.10W (4.5NM WSW 8D7) 2074.8FT (318.9FT AGL) U/S 2608250723-2611230823
```
Obstruction tower lights (ASR 1213427) 45°02′N 99°09′W (1.9 nautical miles WNW 3FU) 1898.0FT (295.9FT above ground level) out of service until Mon 28 Dec, 6:23 am CST (12:23 UTC) · 89 nm along the route, 8 nm off the line · 3FU 09/117
as issued
```
!HON 09/117 3FU OBST TOWER LGT (ASR 1213427) 450222.80N0990920.30W (1.9NM WNW 3FU) 1898.0FT (295.9FT AGL) U/S 2609291123-2612281223
```
Obstruction tower lights (ASR 1307359) 44°58′N 99°29′W (16.5 nautical miles west 3FU) 2,255 ft (306 ft above ground level) out of service until Thu 19 Nov, 2:26 pm CST (20:26 UTC), estimated · 99 nm along the route, 2 nm off the line · 3FU 10/023
as issued
```
!HON 10/023 3FU OBST TOWER LGT (ASR 1307359) 445813.60N0992925.90W (16.5NM W 3FU) 2255FT (306FT AGL) U/S 2610051427-2611192026EST
```
Obstruction tower lights (ASN 2023-above ground level-14045-OE) 44°58′N 103°25′W (23.8 nautical miles northeast EFC) 3,450 ft (305 ft above ground level) out of service until Sun 8 Nov, 8:49 am CST (14:49 UTC) · 268 nm along the route, 8 nm off the line · EFC 09/097
as issued
```
!HON 09/097 EFC OBST TOWER LGT (ASN 2023-AGL-14045-OE) 445859N1032533W (23.8NM NE EFC) 3450FT (305FT AGL) U/S 2609241450-2611081449
```
Navigation aid ILS runway 33 DME out of service until Thu 15 Oct, 3:00 pm CDT (20:00 UTC), estimated · 417 nm along the route, 6 nm off the line · SHR 10/009
as issued
```
!SHR 10/009 SHR NAV ILS RWY 33 DME U/S 2610080025-2610152000EST
```
Navigation aid VOR/DME not monitor until Fri 23 Oct, 3:00 pm CDT (20:00 UTC), estimated · 417 nm along the route, 11 nm off the line · SHR 10/010
as issued
```
!SHR 10/010 SHR NAV VOR/DME NOT MNT 2610121439-2610232000EST
```
Airspace aerobatic aircraft within an area defined as 1.5 nautical miles radius of COD012016 the surface-10,000 ft daily SR-SS until Tue 29 Jun, 10:05 pm CDT (03:05 UTC) · Daily:SR-SS~DLY SR-SS · 497 nm along the route, 20 nm off the line · POY 08/022
as issued
```
!CPR 08/022 POY AIRSPACE AEROBATIC ACFT WI AN AREA DEFINED AS 1.5NM RADIUS OF COD012016 SFC-10000FT DLY SR-SS 2408131216-2706300305
```

From the FAA's notice service (NOTAMs), the site's copy refreshed every few minutes; last checked 2 minutes ago. The FAA has so far issued eFlight its test feed, which misses some notices (checked against the FAA's own search on 12 October: about a third missing at Santa Barbara and Burbank, none at Atlanta or Las Vegas); the request for the full feed is with the FAA. Times are local to the field. This is for planning; the legal briefing comes from Flight Service or the FAA's own tools.

Daylight

Sunset at ATY 6:47 pm CDT (23:47 UTC), at COD 6:33 pm MDT (00:33 UTC) (civil twilight ends 7:03 pm MDT (01:03 UTC)).

Each restriction opens the FAA's own page with the exact area, heights and times.

The wind over the route live wind map, from Windy.com · drag the time bar for the coming hours; the level menu changes the height

Colours show wind speed, the moving lines its direction, at the surface unless you pick a height. Map and forecast by Windy.com; a second opinion beside the government's winds-aloft table above.

Radar and forecast charts for the regions crossed government pictures, the latest each time the page loads · the turbulence and icing forecasts: turbulence ↗ · icing ↗

Radar now, the northern Rockies · loop National Weather Service

Aviation forecast, clouds and visibility, the north-central states, 3 hours ahead · on the government's site ↗ Aviation Weather Center (NOAA) · cloud cover and bases, visibility, and the areas of low cloud or poor visibility

Aviation forecast, surface weather, the north-central states, 3 hours ahead · on the government's site ↗ Aviation Weather Center (NOAA) · surface winds, weather, thunderstorms, and the AIRMET boxes for turbulence, icing and strong winds

Aviation forecast, clouds and visibility, the Northwest, 3 hours ahead · on the government's site ↗ Aviation Weather Center (NOAA) · cloud cover and bases, visibility, and the areas of low cloud or poor visibility

Aviation forecast, surface weather, the Northwest, 3 hours ahead · on the government's site ↗ Aviation Weather Center (NOAA) · surface winds, weather, thunderstorms, and the AIRMET boxes for turbulence, icing and strong winds

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: Watertown Regional, Yellowstone Regional.