Boise Air Trml/Gowen Field to The Eastern Iowa Airport BOI → CID
1,082 nautical miles (1,245 statute miles) east on a straight line, true course 087°, about 074° magnetic at the departure end (variation 13E). At 120 knots that is 6 h 20 min at the quickest height in today's winds (39,000 ft, a 51-knot tailwind), arriving about 8:04 am CDT (13:04 UTC). Right now BOI is VFR, wind from the west (270°) at 7 knots; CID is VFR, wind from the south (180°) at 6 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
- SIGMET C11C: thunderstorms (a convective SIGMET) up to 31,000 ft, moving from the southwest at 40 knots, until 1:55 am MDT (07:55 UTC). Near the route, 556 nm along the route.
as issued
WSUS32 KKCI 120555 MKCC WST 120555 CONVECTIVE SIGMET 11C VALID UNTIL 0755Z SD WY FROM 60WNW DPR-20SSE DPR-40SSW RAP-60W RAP-60WNW DPR DMSHG AREA TS MOV FROM 22040KT. TOPS TO FL310.
- AIRMET TANGO 1W: moderate turbulence above 18,000 ft from 18,000 ft to 36,000 ft. Over the first 129 nm of the route.
- AIRMET ZULU 2C: moderate icing up to 23,000 ft. Over the route from 20 to 457 nm out.
- AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 40 to 417 nm out.
- AIRMET SIERRA 4E: low cloud or poor visibility (IFR conditions) (due to ceilings below 1,000 ft, visibility below 3 miles, precipitation, mist). Over the route from 79 to 715 nm out.
- AIRMET TANGO 4W: moderate turbulence below 18,000 ft up to 18,000 ft. Over the route from 288 to 506 nm out.
- AIRMET TANGO 4W: moderate turbulence above 18,000 ft from 18,000 ft to 38,000 ft. Over the route from 298 to 566 nm out.
- AIRMET TANGO 1W: 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 route from 328 to 546 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 248 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 BOI.
Pilot reports along the route within 50 nm of the line, last three hours, the serious ones first
- E175 at 6,300 ft, 8 nm southeast, 10:20 pm MDT (04:20 UTC): overcast above 6,300 ft, remarks: during the descent runway 31. 79 nm along the route, 8 nm southeast of the line.
as filed, and in English
SUN UA /OV KSUN/TM 0420/FL063/TP E175/SK OVC063-TOPUNKN/RM DURD RY31
- Report
- a routine report filed through SUN
- Where
- over KSUN
- Time
- 04:20 UTC
- Height
- at 6,300 ft
- Aircraft
- E175
- Sky
- overcast from 6,300 ft, tops unknown
- Remarks
- during the descent runway 31
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 10 forecast points nearest it (BOI, PIH, LND, RAP, PIR, ONL, FSD, OMA, DSM, DBQ). A plus sign is a headwind, a minus sign a tailwind.
| Height | Average wind | Head- or tailwind | Temperature | Ground speed | Time en route | Arrival |
|---|---|---|---|---|---|---|
| 5,500 ft | 220° at 18 kt | −8 kt | 13 °C | 128 kt | 8 h 27 min | 10:11 am CDT (15:11 UTC) |
| 7,500 ft | 220° at 20 kt | −10 kt | 11 °C | 130 kt | 8 h 19 min | 10:03 am CDT (15:03 UTC) |
| 9,500 ft | 220° at 21 kt | −12 kt | 7 °C | 132 kt | 8 h 12 min | 9:56 am CDT (14:56 UTC) |
| 11,500 ft | 220° at 23 kt | −14 kt | 3 °C | 134 kt | 8 h 04 min | 9:48 am CDT (14:48 UTC) |
| 13,500 ft | 220° at 25 kt | −16 kt | -1 °C | 136 kt | 7 h 57 min | 9:41 am CDT (14:41 UTC) |
| 15,500 ft | 220° at 28 kt | −18 kt | -5 °C | 138 kt | 7 h 50 min | 9:34 am CDT (14:34 UTC) |
| 17,500 ft | 220° at 31 kt | −20 kt | -10 °C | 140 kt | 7 h 44 min | 9:28 am CDT (14:28 UTC) |
| 18,000 ft FL180 | 220° at 31 kt | −21 kt | -11 °C | 141 kt | 7 h 40 min | 9:24 am CDT (14:24 UTC) |
| 24,000 ft FL240 | 230° at 39 kt | −27 kt | -22 °C | 147 kt | 7 h 22 min | 9:06 am CDT (14:06 UTC) |
| 30,000 ft FL300 | 230° at 47 kt | −36 kt | -33 °C | 156 kt | 6 h 56 min | 8:40 am CDT (13:40 UTC) |
| 34,000 ft FL340 | 240° at 54 kt | −46 kt | -38 °C | 166 kt | 6 h 31 min | 8:15 am CDT (13:15 UTC) |
| 39,000 ft FL390 | 250° at 57 kt | −51 kt | -46 °C | 171 kt | 6 h 20 min | 8:04 am CDT (13:04 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| BOI | used from 0 nm out; 25 nm from the line | 300/7 2° | 280/5 -4° | 210/16 -9° | 210/60 -20° | 210/75 -29° | 210/63 -32° | 220/64 -32° | 220/54 -39° | |
| PIH | used from 99 nm out; 55 nm from the line | L/V | 240/13 1° | 240/15 -3° | 210/42 -15° | 200/70 -25° | 220/74 -29° | 220/71 -36° | 220/62 -43° | |
| LND | used from 248 nm out; 73 nm from the line | 200/23 6° | 220/31 1° | 220/39 -11° | 230/39 -23° | 220/51 -28° | 220/66 -37° | 230/68 -45° | ||
| RAP | used from 447 nm out; 107 nm from the line | 180/23 12° | 200/38 13° | 210/38 6° | 220/28 -10° | 230/34 -21° | 230/37 -36° | 250/52 -38° | 250/59 -46° | |
| PIR | used from 645 nm out; 79 nm from the line | 170/22 19° | 190/25 13° | 210/32 6° | 240/23 -9° | 250/32 -21° | 250/38 -36° | 260/44 -40° | 260/52 -47° | |
| ONL | used from 695 nm out; 57 nm from the line | 210/31 20° | 230/27 13° | 230/18 7° | 220/19 -8° | 240/26 -20° | 250/44 -35° | 270/52 -39° | 260/57 -47° | |
| FSD | used from 844 nm out; 59 nm from the line | 190/9 | 230/30 18° | 240/23 13° | 240/20 6° | 260/22 -9° | 250/31 -21° | 250/43 -36° | 260/49 -43° | 270/53 -47° |
| OMA | used from 893 nm out; 75 nm from the line | 220/47 | 240/33 19° | 250/18 11° | 230/17 6° | 260/29 -8° | 250/33 -19° | 250/51 -33° | 260/61 -40° | 270/62 -49° |
| DSM | used from 943 nm out; 52 nm from the line | 230/40 | 250/33 17° | 250/18 12° | 240/17 5° | 260/28 -8° | 270/34 -19° | 260/41 -33° | 260/55 -41° | 270/62 -51° |
| DBQ | used from 1042 nm out; 69 nm from the line | 230/33 | 250/30 16° | 280/15 9° | 260/15 5° | 260/21 -7° | 260/24 -20° | 250/37 -33° | 270/42 -43° | 280/63 -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 |
|---|---|---|---|---|---|---|---|
| BOI Boise, ID | departure | VFR Sky: overcast at 9,000 feet | from the west (270°) at 7 knots | 10+ mi | 9,000 ft | 2,871 ft | 11:53 pm MDT (05:53 UTC) |
| SUN Hailey, ID | 79 nm out, 8 nm southeast of the line, tower | low IFR Sky: overcast at 400 feet | from the south (170°) at 7 knots | 7 mi | 400 ft | 5,319 ft | 06:35 UTC |
| IDA Idaho Falls, ID | 179 nm out, 9 nm south of the line, tower | marginal VFR Sky: overcast at 2,000 feet | calm | 10+ mi | 2,000 ft | 4,743 ft | 05:53 UTC |
| JAC Jackson, WY | 238 nm out, 3 nm south of the line, tower | VFR Sky: overcast at 5,500 feet | from the southwest (230°) at 5 knots | 10+ mi | 5,500 ft | 6,451 ft | 05:56 UTC |
| HSG Thermopolis, WY | 337 nm out, 7 nm northeast of the line | marginal VFR Sky: overcast at 2,000 feet | from the north-northeast (020°) at 12 knots | 10+ mi | 2,000 ft | 4,891 ft | 06:35 UTC |
| HSR Hot Springs, SD | 556 nm out, 3 nm east of the line | no report just now | 3,150 ft | ||||
| SUO Rosebud, SD | 665 nm out, 8 nm northeast of the line | low IFR Sky: overcast at 300 feet Weather: mist | from the east-northeast (060°) at 8 knots | 4 mi | 300 ft | 2,724 ft | 06:35 UTC |
| VMR Vermillion, SD | 844 nm out, 4 nm north of the line | VFR | from the west-northwest (300°) at 5 knots | 10+ mi | none | 1,146 ft | 06:35 UTC |
| SUX Sioux City, IA | 873 nm out, 13 nm south of the line, tower | VFR | from the southwest (220°) at 4 knots | 9 mi | none | 1,098 ft | 05:52 UTC |
| MIW Marshalltown, IA | 1022 nm out, 4 nm east of the line | VFR | from the south (170°) at 9 knots | 10+ mi | none | 974 ft | 05:53 UTC |
| CID Cedar Rapids, IA | destination | VFR | from the south (180°) at 6 knots | 10+ mi | none | 869 ft | 9:52 pm CDT (02:52 UTC) |
The highest airport on this list sits at 6,451 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At CID when you get there the forecast at the estimated arrival, 8:04 am CDT (13:04 UTC)
Wind from the south at 7 knots, visibility more than 6 miles, low-level wind shear, a broken layer at 25,000 feet VFR
The whole forecast for CID
- From Mon 1:00 am CDT (06:00 UTC): wind from the south at 7 knots, visibility more than 6 miles, low-level wind shear, a broken layer at 25,000 feet
- From Mon 10:00 am CDT (15:00 UTC): wind from the south-southwest at 15 knots, gusting to 22, visibility more than 6 miles, scattered clouds at 25,000 feet
- From Mon 7:00 pm CDT (00:00 UTC): wind from the south-southwest at 9 knots, visibility more than 6 miles, low-level wind shear, a few clouds at 25,000 feet
The forecast for BOI, the departure
- From Mon 12:00 am MDT (06:00 UTC): wind light and variable, visibility more than 6 miles, a broken layer at 8,000 feet
- From Mon 2:00 am MDT (08:00 UTC): wind from the west-northwest at 5 knots, visibility more than 6 miles, scattered clouds at 4,000 feet, a broken layer at 8,000 feet
- From Mon 12:00 pm MDT (18:00 UTC): wind from the northwest at 10 knots, visibility more than 6 miles, a broken layer at 10,000 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 BOI 7:05 pm MDT (01:05 UTC), at CID 6:30 pm CDT (23:30 UTC) (civil twilight ends 6:58 pm CDT (23:58 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: Boise Air Trml/Gowen Field, The Eastern Iowa Airport.
