Plan a flight · Sun 4:29 pm PDT (23:29 UTC)

Auburn Municipal to Renton Municipal AUN → RNT

515 nautical miles (593 statute miles) north on a straight line, true course 355°, about 339° magnetic at the departure end (variation 16E). At 120 knots that is 4 h 41 min at the quickest height in today's winds (4,500 ft, a 10-knot headwind), arriving about 9:10 pm PDT (04:10 UTC), after sunset at the destination. Right now AUN is VFR, wind from the south-southwest (210°) at 6 knots, gusting to 12; RNT is VFR, wind from the north-northwest (340°) at 11 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

AIRMET SIERRA 1E: mountains obscured by cloud (due to mountains obscured by clouds, precipitation, mist). Over the route from 277 to 317 nm out.
AIRMET ZULU 2C: moderate icing up to 14,000 ft. Near the route, 337 nm along 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 AUN.

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

UAL195 at 35,000 ft, 20 nm west, 1:30 pm PDT (20:30 UTC): moderate turbulence. 198 nm along the route, 20 nm west of the line.
as filed, and in English
```
ARP UAL195 4208N 12154W 2030 F350 TB MODERATE SK CLEAR IC NONE
```
Report
a routine report filed through ARP
B739 at 27,000 ft, 12 nm southwest, 1:30 pm PDT (20:30 UTC): moderate turbulence, remarks: during the climb eastbound zse. 198 nm along the route, 12 nm southwest of the line.
as filed, and in English
```
LMT UA /OV LMT/TM 2030/FL270/TP B739/TB OCNL MOD CONS LGT CHOP 270-300/RM DURC EASTBOUND ZSE
```
Report
a routine report filed through LMT
Where
over LMT
Time
20:30 UTC
Height
at 27,000 ft
Aircraft
B739
Turbulence
occasional moderate continuous light chop from 27,000 ft to 30,000 ft
Remarks
during the climb eastbound zse
E75L at 10,000 ft, 18 nm west, 3:04 pm PDT (22:04 UTC): moderate rime icing, -9 °C, remarks: from 10,000 ft to 7,500 ft during the descent. 426 nm along the route, 18 nm west of the line.
as filed, and in English
```
PDX UA /OV PDX360025/TM 2204/FL100/TP E75L/TA M9/IC MOD RIME /RM 100-075 DURD
```
Report
a routine report filed through PDX
Where
25 nm north (360°) of PDX
Time
22:04 UTC
Height
at 10,000 ft
Aircraft
E75L
Temperature
−9 °C
Icing
moderate rime
Remarks
from 10,000 ft to 7,500 ft during the descent
E75L at 33,000 ft, 19 nm east, 1:32 pm PDT (20:32 UTC): remarks: mountain wave +/-300 ft entered by zoa fdcs. 109 nm along the route, 19 nm east of the line.
as filed, and in English
```
RNO UA /OV RBL039074/TM 2032/FL330/TP E75L/RM MTN WAVE +/-300 FT. ENTERED BY ZOA FDCS
```
Report
a routine report filed through RNO
Where
74 nm northeast (039°) of RBL
Time
20:32 UTC
Height
at 33,000 ft
Aircraft
E75L
Remarks
mountain wave +/-300 ft entered by zoa fdcs
E75L at 9,000 ft, 19 nm east, 4:05 pm PDT (23:05 UTC): light rime icing, -6 °C, remarks: zse. 307 nm along the route, 19 nm east of the line.
as filed, and in English
```
RDM UA /OV DSD155012/TM 2305/FL090/TP E75L/TA M06/IC LGT RIME/RM ZSE
```
Report
a routine report filed through RDM
Where
12 nm southeast (155°) of DSD
Time
23:05 UTC
Height
at 9,000 ft
Aircraft
E75L
Temperature
−6 °C
Icing
light rime
Remarks
zse
E75L at 9,500 ft, 26 nm east, 4:07 pm PDT (23:07 UTC): light rime icing from 7,000 ft to 9,500 ft, a broken layer above 7,300 ft, -2 °C, remarks: during the descent runway 5. 317 nm along the route, 26 nm east of the line.
as filed, and in English
```
RDM UA /OV RDM/TM 2307/FL095/TP E75L/SK BKN073-TOPSUNKN/TA M2/IC LGT RIME 095-070/RM DURD RWY 5
```
Report
a routine report filed through RDM
Where
over RDM
Time
23:07 UTC
Height
at 9,500 ft
Aircraft
E75L
Sky
a broken layer from 7,300 ft, tops unknown
Temperature
−2 °C
Icing
light rime from 9,500 ft to 7,000 ft
Remarks
during the descent runway 5
E170 at 10,000 ft, 26 nm east, 3:02 pm PDT (22:02 UTC): light rime icing from 7,000 ft to 10,000 ft. 317 nm along the route, 26 nm east of the line.
as filed, and in English
```
RDM UA /OV RDM/TM 2202/FL100/TP E170/SK BASE 065-TOPS UNKN/TA UNKN/IC LGT RIME 100-070
```
Report
a routine report filed through RDM
Where
over RDM
Time
22:02 UTC
Height
at 10,000 ft
Aircraft
E170
Sky
base 065-TOPS unknown
Temperature
UNKN
Icing
light rime from 10,000 ft to 7,000 ft
C182 at 8,000 ft, 14 nm west, 3:52 pm PDT (22:52 UTC): light rime icing, -2 °C. 406 nm along the route, 14 nm west of the line.
as filed, and in English
```
PDX UA /OV PDX040017/TM 2252/FL080/TP C182/TA M02/IC LGT RIME
```
Report
a routine report filed through PDX
Where
17 nm northeast (040°) of PDX
Time
22:52 UTC
Height
at 8,000 ft
Aircraft
C182
Temperature
−2 °C
Icing
light rime

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 7 forecast points nearest it (SAC, RBL, SIY, LKV, RDM, PDX, SEA). 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	360° at 10 kt	+10 kt	0 °C	110 kt	4 h 41 min	9:10 pm PDT (04:10 UTC)
6,500 ft	010° at 10 kt	+10 kt	1 °C	110 kt	4 h 41 min	9:10 pm PDT (04:10 UTC)
8,500 ft	020° at 12 kt	+11 kt	-4 °C	109 kt	4 h 43 min	9:12 pm PDT (04:12 UTC)
10,500 ft	020° at 13 kt	+11 kt	-7 °C	109 kt	4 h 43 min	9:12 pm PDT (04:12 UTC)
12,500 ft	010° at 15 kt	+14 kt	-11 °C	106 kt	4 h 52 min	9:21 pm PDT (04:21 UTC)
14,500 ft	010° at 23 kt	+22 kt	-14 °C	98 kt	5 h 15 min	9:44 pm PDT (04:44 UTC)
16,500 ft	010° at 30 kt	+29 kt	-17 °C	91 kt	5 h 40 min	10:09 pm PDT (05:09 UTC)
18,000 ft FL180	010° at 36 kt	+35 kt	-19 °C	85 kt	6 h 04 min	10:33 pm PDT (05:33 UTC)
24,000 ft FL240	360° at 56 kt	+56 kt	-25 °C	64 kt	8 h 03 min	12:32 am PDT (07:32 UTC)
30,000 ft FL300	350° at 50 kt	+50 kt	-34 °C	70 kt	7 h 21 min	11:50 pm PDT (06:50 UTC)
34,000 ft FL340	340° at 33 kt	+32 kt	-36 °C	88 kt	5 h 51 min	10:20 pm PDT (05:20 UTC)
39,000 ft FL390	310° at 23 kt	+15 kt	-41 °C	105 kt	4 h 54 min	9:23 pm PDT (04:23 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
SAC	used from 0 nm out; 54 nm from the line	270/5	L/V 5°	L/V -1°	240/11 -5°	250/22 -15°	270/25 -24°	260/31 -27°	240/39 -33°	240/39 -42°
RBL	used from 50 nm out; 47 nm from the line	350/10	350/7 6°	L/V -1°	320/6 -8°	340/24 -18°	340/38 -24°	330/32 -30°	300/25 -34°	270/37 -40°
SIY	used from 149 nm out; 47 nm from the line		020/15 4°	020/16 -5°	010/11 -10°	010/47 -18°	360/70 -25°	350/58 -34°	330/46 -35°	300/23 -40°
LKV	used from 198 nm out; 58 nm from the line			010/18 -6°	280/7 -11°	290/9 -22°	280/13 -27°	290/20 -31°	260/19 -34°	260/27 -39°
RDM	used from 248 nm out; 52 nm from the line		010/15 -2°	030/21 -8°	020/26 -12°	020/46 -22°	010/72 -27°	360/47 -34°	340/31 -35°	320/20 -40°
PDX	used from 347 nm out; 42 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°
SEA	used from 446 nm out; 43 nm from the line	360/9	350/10 1°	010/10 -5°	030/20 -11°	020/60 -17°	010/86 -26°	360/90 -40°	010/68 -42°	360/31 -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
AUN Auburn, CA	departure	VFR	from the south-southwest (210°) at 6 knots, gusting to 12	10+ mi	none	1,538 ft	4:15 pm PDT (23:15 UTC)
GOO Grass Valley, CA	20 nm out, 7 nm southeast of the line	VFR	variable at 5 knots	10+ mi	none	3,157 ft	23:15 UTC
LMT Klamath Falls, OR	198 nm out, 12 nm southwest of the line, tower	VFR	from the east-northeast (060°) at 12 knots, gusting to 21	10+ mi	none	4,095 ft	22:53 UTC
BDN Bend, OR	307 nm out, 23 nm east of the line	VFR Sky: a broken layer at 3,100 feet, overcast at 3,700 feet	from the north-northwest (330°) at 8 knots	10+ mi	3,100 ft	3,459 ft	23:15 UTC
TTD Portland, OR	396 nm out, 20 nm west of the line, tower	VFR Sky: overcast at 10,000 feet	from the east (090°) at 9 knots	10+ mi	10,000 ft	38 ft	22:53 UTC
PLU Puyallup, WA	495 nm out, 6 nm southwest of the line	VFR Weather: light drizzle	from the north (010°) at 6 knots	10+ mi	none	537 ft	23:15 UTC
RNT Renton, WA	destination	VFR	from the north-northwest (340°) at 11 knots	10+ mi	none	32 ft	3:53 pm PDT (22:53 UTC)

The highest airport on this list sits at 4,095 ft; the ground between airports is higher still. Check the sectional chart for the terrain and the minimum safe heights along the line.

At RNT when you get there the forecast at the estimated arrival, 9:10 pm PDT (04:10 UTC)

RNT has no terminal forecast; use the nearest airport that does.

Temporary flight restrictions on the line or within 25 nm of it

6/6740 SACRAMENTO, CA, Thursday, October 8, 2026 through Sunday, October 11, 2026 Local 19 nm from the route, at the departure end · air shows/sports · until 11 October · ZOA
6/3475 BEALE AFB, CA, Sunday, March 8, 2026 through Sunday, November 1, 2026 Local 6 nm from the route, at the departure end · security · until 1 November · ZOA

Daylight

Sunset at AUN 6:30 pm PDT (01:30 UTC), at RNT 6:26 pm PDT (01:26 UTC) (civil twilight ends 6:57 pm PDT (01:57 UTC)). At 120 knots the arrival at RNT is after sunset there (6:28 pm PDT (01:28 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 Pacific Southwest · loop National Weather Service

Radar now, the Pacific Northwest · 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: Auburn Municipal, Renton Municipal.