Napa County to Friedman Memorial APC → SUN
482 nautical miles (554 statute miles) northeast on a straight line, true course 046°, about 031° magnetic at the departure end (variation 15E). At 120 knots that is 3 h 22 min at the quickest height in today's winds (39,000 ft, a 23-knot tailwind), arriving about 12:04 pm MDT (18:04 UTC). Right now APC is VFR, wind from the north (360°) at 6 knots; SUN is low IFR, wind from the southeast (130°) at 10 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 TANGO 1W: moderate turbulence above 18,000 ft from 18,000 ft to 39,000 ft. Over the route from 10 to 324 nm out.
- AIRMET ZULU 2C: moderate icing up to 23,000 ft. Over the last 197 nm of the route.
- AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the last 167 nm of the route.
- 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 last 20 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 APC.
Pilot reports along the route within 50 nm of the line, last three hours, the serious ones first
- B739 at 27,000 ft, 19 nm southeast, 5:56 am PDT (12:56 UTC): moderate chop turbulence. 403 nm along the route, 19 nm southeast of the line.
as filed, and in English
TWF UA /OV TWF247042/TM 1256/FL270/TP B739/TB MOD CHOP/ZLC
- Report
- a routine report filed through TWF
- Where
- 42 nm southwest (247°) of TWF
- Time
- 12:56 UTC
- Height
- at 27,000 ft
- Aircraft
- B739
- Turbulence
- moderate chop/zlc
- B789 at 39,000 ft, 41 nm west, 6:37 am PDT (13:37 UTC): light to moderate turbulence, remarks: entered by zoa fdcs. At the departure end, 41 nm west of the line.
as filed, and in English
STS UA /OV PYE218013/TM 1337/FL390/TP B789/TB LGT-MOD/RM ENTERED BY ZOA FDCS
- Report
- a routine report filed through STS
- Where
- 13 nm southwest (218°) of PYE
- Time
- 13:37 UTC
- Height
- at 39,000 ft
- Aircraft
- B789
- Turbulence
- light to moderate
- Remarks
- entered by zoa fdcs
- B738 at 14,000 ft, 44 nm southeast, 5:38 am PDT (12:38 UTC): light icing, -2 °C. 138 nm along the route, 44 nm southeast of the line.
as filed, and in English
RNO UA /OV RNO130020/TM 1238/FL140/TP B738/TA M02/IC LGT RM
- Report
- a routine report filed through RNO
- Where
- 20 nm southeast (130°) of RNO
- Time
- 12:38 UTC
- Height
- at 14,000 ft
- Aircraft
- B738
- Temperature
- −2 °C
- Icing
- light remarks
- B38M at 11,000 ft, 39 nm southeast, 5:30 am PDT (12:30 UTC): light rime icing, -1 °C, remarks: from 11,000 ft to 14,000 ft rno dept southeast bound entered by zoa fdcs. 138 nm along the route, 39 nm southeast of the line.
as filed, and in English
RNO UA /OV 3917N11935W/TM 1230/FL110/TP B38M/SK UNKN/TA M01/IC LGT RIME/RM 110-140 RNO DEPT SE BOUND ENTERED BY ZOA FDCS
- Report
- a routine report filed through RNO
- Where
- 3917N11935W
- Time
- 12:30 UTC
- Height
- at 11,000 ft
- Aircraft
- B38M
- Sky
- unknown
- Temperature
- −1 °C
- Icing
- light rime
- Remarks
- from 11,000 ft to 14,000 ft rno dept southeast bound entered by zoa fdcs
- MU2 at 12,000 ft, 0 nm northwest, 7:07 am PDT (14:07 UTC): a routine report with nothing remarked on. At the destination end, 0 nm northwest of the line.
as filed, and in English
SUN UA /OV SUN/TM 1407/FL120/TP MU2/SK BASE 055 TOP 118 /ZLC
- Report
- a routine report filed through SUN
- Where
- over SUN
- Time
- 14:07 UTC
- Height
- at 12,000 ft
- Aircraft
- MU2
- Sky
- base 5,500 ft top 11,800 ft; zlc
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 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 4 forecast points nearest it (SAC, RNO, BAM, BOI). 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 | 350° at 5 kt | +2 kt | 1 °C | 118 kt | 4 h 05 min | 12:47 pm MDT (18:47 UTC) |
| 7,500 ft | 310° at 6 kt | −1 kt | -2 °C | 121 kt | 3 h 59 min | 12:41 pm MDT (18:41 UTC) |
| 9,500 ft | 290° at 7 kt | −4 kt | -5 °C | 124 kt | 3 h 53 min | 12:35 pm MDT (18:35 UTC) |
| 11,500 ft | 280° at 9 kt | −6 kt | -9 °C | 126 kt | 3 h 50 min | 12:32 pm MDT (18:32 UTC) |
| 13,500 ft | 270° at 11 kt | −7 kt | -12 °C | 127 kt | 3 h 48 min | 12:30 pm MDT (18:30 UTC) |
| 15,500 ft | 280° at 12 kt | −8 kt | -15 °C | 128 kt | 3 h 46 min | 12:28 pm MDT (18:28 UTC) |
| 17,500 ft | 280° at 14 kt | −9 kt | -17 °C | 129 kt | 3 h 44 min | 12:26 pm MDT (18:26 UTC) |
| 18,000 ft FL180 | 280° at 14 kt | −9 kt | -18 °C | 129 kt | 3 h 44 min | 12:26 pm MDT (18:26 UTC) |
| 24,000 ft FL240 | 290° at 17 kt | −7 kt | -27 °C | 127 kt | 3 h 48 min | 12:30 pm MDT (18:30 UTC) |
| 30,000 ft FL300 | 290° at 20 kt | −9 kt | -35 °C | 129 kt | 3 h 44 min | 12:26 pm MDT (18:26 UTC) |
| 34,000 ft FL340 | 260° at 20 kt | −17 kt | -38 °C | 137 kt | 3 h 31 min | 12:13 pm MDT (18:13 UTC) |
| 39,000 ft FL390 | 230° at 24 kt | −23 kt | -42 °C | 143 kt | 3 h 22 min | 12:04 pm MDT (18:04 UTC) |
Based on data from the 12th at 12:00 UTC; valid on the 12th 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| SAC | used from 0 nm out; 19 nm from the line | L/V | 320/8 4° | 330/12 -3° | 350/25 -6° | 350/63 -12° | 340/65 -24° | 340/60 -40° | 340/45 -45° | 290/24 -45° |
| RNO | used from 98 nm out; 28 nm from the line | L/V | 280/12 -4° | 260/15 -10° | 340/47 -17° | 340/75 -25° | 330/47 -37° | 280/20 -40° | 240/24 -42° | |
| BAM | used from 246 nm out; 63 nm from the line | 270/8 -4° | 260/21 -11° | 190/44 -21° | 200/54 -28° | 210/38 -31° | 220/38 -35° | 210/35 -41° | ||
| BOI | used from 344 nm out; 75 nm from the line | 360/9 1° | L/V -5° | 180/10 -12° | 200/58 -21° | 180/62 -31° | 200/41 -31° | 210/34 -32° | 200/29 -41° |
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 |
|---|---|---|---|---|---|---|---|
| APC Napa, CA | departure | VFR | from the north (360°) at 6 knots | 8 mi | none | 35 ft | 6:54 am PDT (13:54 UTC) |
| SMF Sacramento, CA | 39 nm out, 4 nm northeast of the line, tower | VFR Sky: a few clouds at 11,000 feet | calm | 10+ mi | none | 26 ft | 13:53 UTC |
| MHR Sacramento, CA | 49 nm out, 17 nm southeast of the line, tower | VFR | from the south (170°) at 4 knots | 10+ mi | none | 98 ft | 08:15 UTC |
| TRK Truckee, CA | 118 nm out, 20 nm southeast of the line, tower | VFR Sky: scattered clouds at 7,500 feet | calm | 10+ mi | none | 5,904 ft | 13:47 UTC |
| WMC Winnemucca, NV | 265 nm out, 21 nm southeast of the line | VFR Sky: overcast at 8,000 feet | from the west-northwest (300°) at 3 knots | 10+ mi | 8,000 ft | 4,307 ft | 13:56 UTC |
| GNG Gooding, ID | 442 nm out, 15 nm southeast of the line | VFR Sky: a broken layer at 12,000 feet | from the southwest (230°) at 8 knots | 10+ mi | 12,000 ft | 3,732 ft | 14:35 UTC |
| SUN Hailey, ID | destination | low IFR Sky: a broken layer at 400 feet, overcast at 900 feet Weather: light rain | from the southeast (130°) at 10 knots | 4 mi | 400 ft | 5,319 ft | 7:47 am MDT (13:47 UTC) |
The highest airport on this list sits at 5,904 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.
At SUN when you get there the forecast at the estimated arrival, 12:04 pm MDT (18:04 UTC)
Wind light and variable, visibility 6 miles, light rain showers, a broken layer at 400 feet, overcast at 2,000 feet low IFR
The whole forecast for SUN
- From Mon 6:00 am MDT (12:00 UTC): wind light and variable, visibility 6 miles, light rain showers, a broken layer at 400 feet, overcast at 2,000 feet
- From Mon 1:00 pm MDT (19:00 UTC): wind from the south-southeast at 6 knots, visibility more than 6 miles, showers nearby, a few clouds at 1,200 feet, scattered clouds at 2,500 feet and more above
- From Mon 10:00 pm MDT (04:00 UTC): wind from the west-northwest at 7 knots, visibility more than 6 miles, showers nearby, scattered clouds at 3,000 feet, a broken layer at 5,000 feet and more above
The forecast for APC, the departure
- From Mon 5:00 am PDT (12:00 UTC): wind light and variable, visibility more than 6 miles, clear skies
Temporary flight restrictions on the line or within 25 nm of it
- 6/3475 BEALE AFB, CA, Sunday, March 8, 2026 through Sunday, November 1, 2026 Local 3 nm from the route, 69 nm along the route · security · until 1 November · ZOA
Daylight
Sunset at APC 6:34 pm PDT (01:34 UTC), at SUN 6:57 pm MDT (00:57 UTC) (civil twilight ends 7:26 pm MDT (01:26 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: Napa County, Friedman Memorial.