Chicago/Rockford International to Portland International RFD → PDX
1,453 nautical miles (1,672 statute miles) west on a straight line, true course 290°, about 293° magnetic at the departure end (variation 3W). At 120 knots that is 11 h 43 min at the quickest height in today's winds (4,500 ft, a 4-knot tailwind), arriving about 6:31 am PDT (13:31 UTC), after sunset at the destination. Right now RFD is VFR, wind calm; PDX is VFR, wind from the east-southeast (110°) at 4 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: 615 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 3W: thunderstorms (a convective SIGMET) up to 31,000 ft, moving from the southwest at 40 knots, until 9:55 pm CDT (02:55 UTC). Over the route from 746 to 846 nm out.
as issued
WSUS33 KKCI 120055 MKCW WST 120055 CONVECTIVE SIGMET 3W VALID UNTIL 0255Z MT WY FROM 10WSW MLS-70E DDY-20N LAR-50E BPI-30NE BIL-10WSW MLS AREA TS MOV FROM 22040KT. TOPS TO FL310.
- 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 route from 139 to 249 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 498 to 1125 nm out.
- AIRMET TANGO 4W: moderate turbulence above 18,000 ft from 18,000 ft to 36,000 ft. Over the route from 587 to 1174 nm out.
- AIRMET TANGO 4W: moderate turbulence below 18,000 ft up to 18,000 ft. Over the route from 786 to 935 nm out.
- AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 816 to 1304 nm out.
- AIRMET ZULU 3C: moderate icing up to 22,000 ft. Over the route from 836 to 886 nm out.
- AIRMET ZULU 2C: moderate icing up to 16,000 ft. Over the route from 1015 to 1373 nm out.
- AIRMET TANGO 1W: moderate turbulence above 18,000 ft from 18,000 ft to 39,000 ft. Over the last 129 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 RFD.
Pilot reports along the route within 50 nm of the line, last three hours, the serious ones first
Not fetched just now.
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 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 12 forecast points nearest it (DBQ, MCW, FSD, ABR, PIR, RAP, MLS, BIL, DLN, LWS, YKM, PDX). 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 | 150° at 4 kt | −4 kt | 12 °C | 124 kt | 11 h 43 min | 6:31 am PDT (13:31 UTC) |
| 6,500 ft | 180° at 3 kt | −2 kt | 10 °C | 122 kt | 11 h 55 min | 6:43 am PDT (13:43 UTC) |
| 8,500 ft | 200° at 4 kt | −1 kt | 5 °C | 121 kt | 12 h | 6:48 am PDT (13:48 UTC) |
| 10,500 ft | 210° at 9 kt | +2 kt | 2 °C | 118 kt | 12 h 19 min | 7:07 am PDT (14:07 UTC) |
| 12,500 ft | 210° at 13 kt | +5 kt | -1 °C | 115 kt | 12 h 38 min | 7:26 am PDT (14:26 UTC) |
| 14,500 ft | 220° at 15 kt | +8 kt | -5 °C | 112 kt | 12 h 58 min | 7:46 am PDT (14:46 UTC) |
| 16,500 ft | 230° at 17 kt | +10 kt | -9 °C | 110 kt | 13 h 13 min | 8:01 am PDT (15:01 UTC) |
| 18,000 ft FL180 | 230° at 19 kt | +12 kt | -12 °C | 108 kt | 13 h 27 min | 8:15 am PDT (15:15 UTC) |
| 24,000 ft FL240 | 240° at 28 kt | +21 kt | -22 °C | 99 kt | 14 h 41 min | 9:29 am PDT (16:29 UTC) |
| 30,000 ft FL300 | 230° at 32 kt | +23 kt | -35 °C | 97 kt | 14 h 59 min | 9:47 am PDT (16:47 UTC) |
| 34,000 ft FL340 | 240° at 43 kt | +36 kt | -42 °C | 84 kt | 17 h 18 min | 12:06 pm PDT (19:06 UTC) |
| 39,000 ft FL390 | 250° at 54 kt | +50 kt | -48 °C | 70 kt | 20 h 45 min | 3:33 pm PDT (22:33 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| DBQ | used from 0 nm out; 48 nm from the line | 220/23 | 240/22 16° | 240/24 10° | 260/18 5° | 270/16 -8° | 290/27 -19° | 310/42 -35° | 320/55 -44° | 300/71 -52° |
| MCW | used from 149 nm out; 22 nm from the line | 200/35 | 240/33 18° | 250/20 10° | 260/10 6° | 270/18 -8° | 260/28 -19° | 280/30 -34° | 290/49 -43° | 280/70 -54° |
| FSD | used from 249 nm out; 74 nm from the line | 200/16 | 220/20 17° | 240/26 13° | 230/19 6° | 240/25 -9° | 240/28 -20° | 250/39 -33° | 250/44 -43° | 260/63 -52° |
| ABR | used from 398 nm out; 76 nm from the line | 030/24 | 220/5 16° | 230/18 12° | 230/32 5° | 240/38 -10° | 250/37 -20° | 240/40 -35° | 240/56 -44° | 250/72 -52° |
| PIR | used from 448 nm out; 34 nm from the line | L/V 17° | 230/13 12° | 220/22 6° | 250/31 -9° | 250/34 -21° | 240/50 -35° | 230/61 -43° | 240/62 -51° | |
| RAP | used from 597 nm out; 49 nm from the line | 120/15 12° | 180/22 11° | 220/26 5° | 230/35 -9° | 240/40 -22° | 240/50 -37° | 240/51 -41° | 240/47 -47° | |
| MLS | used from 697 nm out; 83 nm from the line | 120/22 5° | 170/18 4° | 200/33 1° | 230/49 -10° | 230/58 -21° | 220/54 -37° | 230/64 -44° | 250/74 -49° | |
| BIL | used from 796 nm out; 50 nm from the line | 080/24 | 130/14 -1° | 180/33 0° | 210/43 -10° | 220/58 -21° | 200/55 -36° | 220/75 -44° | 240/83 -48° | |
| DLN | used from 945 nm out; 64 nm from the line | 080/10 -3° | 180/8 -3° | 180/23 -14° | 200/58 -22° | 200/80 -36° | 220/85 -41° | 230/81 -45° | ||
| LWS | used from 1144 nm out; 63 nm from the line | 010/5 | 050/14 -2° | 040/12 -6° | 160/7 -10° | 190/30 -22° | 200/54 -27° | 200/48 -35° | 210/40 -37° | 230/32 -41° |
| YKM | used from 1294 nm out; 71 nm from the line | 030/16 | 020/18 0° | 030/30 -8° | 030/23 -13° | 020/40 -23° | 010/73 -29° | 010/54 -36° | 360/29 -37° | 330/16 -40° |
| PDX | used from 1393 nm out; 35 nm from the line | 330/7 | 360/13 0° | 040/22 -6° | 030/23 -12° | 020/64 -18° | 010/93 -25° | 010/91 -39° | 360/62 -40° | 350/41 -43° |
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 |
|---|---|---|---|---|---|---|---|
| RFD Chicago/Rockford, IL | departure | VFR Sky: a few clouds at 25,000 feet | calm | 10+ mi | none | 742 ft | 7:54 pm CDT (00:54 UTC) |
| DBQ Dubuque, IA | 70 nm out, 12 nm southwest of the line, tower | VFR | from the south-southeast (160°) at 9 knots | 10+ mi | none | 1,076 ft | 00:53 UTC |
| FXY Forest City, IA | 209 nm out, 3 nm south of the line | VFR | from the south-southeast (150°) at 7 knots | 10+ mi | none | 1,229 ft | 01:30 UTC |
| FSD Sioux Falls, SD | 348 nm out, 19 nm south of the line, tower | VFR Sky: scattered clouds at 18,000 feet, scattered clouds at 25,000 feet | from the west-northwest (290°) at 5 knots | 10+ mi | none | 1,430 ft | 00:56 UTC |
| PIR Pierre, SD | 508 nm out, 7 nm south of the line | marginal VFR Sky: a few clouds at 500 feet, overcast at 1,100 feet | from the east-northeast (070°) at 5 knots | 10+ mi | 1,100 ft | 1,744 ft | 00:53 UTC |
| EFC Belle Fourche, SD | 657 nm out, 14 nm southwest of the line | no report just now | 3,190 ft | ||||
| BIL Billings, MT | 866 nm out, 23 nm north of the line, tower | IFR Sky: a broken layer at 800 feet, overcast at 1,200 feet Weather: light snow, mist | from the north (010°) at 12 knots | 4 mi | 800 ft | 3,662 ft | 01:23 UTC |
| BZN Bozeman, MT | 975 nm out, 12 nm north of the line, tower | low IFR Sky: overcast at 300 feet Weather: light snow, mist | calm | 1.5 mi | 300 ft | 4,473 ft | 01:25 UTC |
| RVF Twin Bridges, MT | 1025 nm out, 7 nm southeast of the line | IFR Sky: scattered clouds at 300 feet, a broken layer at 800 feet, a broken layer at 1,400 feet Weather: mist | from the north-northeast (030°) at 23 knots, gusting to 29 | 1 mi | 800 ft | 4,788 ft | 01:35 UTC |
| PDT Pendleton, OR | 1294 nm out, 2 nm southwest of the line, tower | VFR Sky: overcast at 6,000 feet | from the north-northeast (030°) at 3 knots | 10+ mi | 6,000 ft | 1,494 ft | 00:53 UTC |
| DLS The Dalles, OR | 1393 nm out, 2 nm south of the line | VFR Sky: overcast at 9,000 feet | from the west-southwest (240°) at 4 knots | 10+ mi | 9,000 ft | 246 ft | 00:53 UTC |
| PDX Portland, OR | destination | VFR Sky: a few clouds at 3,900 feet, scattered clouds at 7,000 feet, a broken layer at 9,000 feet | from the east-southeast (110°) at 4 knots | 10+ mi | 9,000 ft | 30 ft | 5:53 pm PDT (00:53 UTC) |
The highest airport on this list sits at 4,788 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At PDX when you get there the forecast at the estimated arrival, 6:31 am PDT (13:31 UTC)
Wind light and variable, visibility more than 6 miles, clear skies VFR
The whole forecast for PDX
- From Sun 5:00 pm PDT (00:00 UTC): wind from the west-northwest at 6 knots, visibility more than 6 miles, a broken layer at 5,000 feet
- From Sun 8:00 pm PDT (03:00 UTC): wind light and variable, visibility more than 6 miles, clear skies
The forecast for RFD, the departure
- From Sun 7:00 pm CDT (00:00 UTC): wind from the south at 5 knots, visibility more than 6 miles, clear skies
- From Mon 12:00 pm CDT (17:00 UTC): wind from the south-southwest at 12 knots, gusting to 22, visibility more than 6 miles, scattered clouds at 20,000 feet
- From Mon 6:00 pm CDT (23:00 UTC): wind from the south-southwest at 12 knots, visibility more than 6 miles, a few clouds at 12,000 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 RFD 6:19 pm CDT (23:19 UTC), at PDX 6:30 pm PDT (01:30 UTC) (civil twilight ends 7:00 pm PDT (02:00 UTC)). At 120 knots the arrival at PDX is before sunrise there (7:22 am PDT (14:22 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: Chicago/Rockford International, Portland International.
