Wind on the strip—The strip’s direction is not mapped
Computed from the forecast air temperature, dew point and station pressure (NWS formulas; the correction factor by SAE J1349 and the older 60 °F STD standard). Track temperature is estimated from sun, wind and the surface; it is not a sensor reading. How these are figured.
This week
Day by day
TodayNov 859°15°37°3° 3%Yellow flag
TomorrowNov 958°14°33°1° 2%Green flag
TueNov 1051°11°37°3° 12%Yellow flag
WedNov 1161°16°36°2° 0%Green flag
ThuNov 1262°17°39°4° 0%Green flag
FriNov 1360°16°39°4° 3%Green flag
SatNov 1458°14°38°4° 5%Green flagpartial
Day
Flag
Sky
High / low
Rain
Gusts
Track temp
Density alt.
Sunrise · sunset
Today Nov 8
Yellow flaggusty wind
Overcast
59°15°37°3°
3%
25 mph41 km/h SSW
74°23°
6,036 ft1,840 m
7:21 AM · 5:09 PM
Tomorrow Nov 9
Green flag
Overcast
58°14°33°1°
2%
21 mph35 km/h SSW
69°20°
5,978 ft1,822 m
7:22 AM · 5:08 PM
Tue Nov 10
Yellow flaggusty wind
Overcast
51°11°37°3°
12%
25 mph40 km/h SW
70°21°
5,522 ft1,683 m
7:24 AM · 5:07 PM
Wed Nov 11
Green flag
Overcast
61°16°36°2°
0%
17 mph28 km/h SSW
78°26°
6,107 ft1,861 m
7:25 AM · 5:05 PM
Thu Nov 12
Green flag
Overcast
62°17°39°4°
0%
6 mph9 km/h S
75°24°
6,310 ft1,923 m
7:27 AM · 5:04 PM
Fri Nov 13
Green flag
Overcast
60°16°39°4°
3%
19 mph30 km/h SSW
72°22°
6,358 ft1,938 m
7:28 AM · 5:03 PM
Sat Nov 14
Green flag
Overcast
58°14°38°4°
5%
6 mph10 km/h SSW
68°20°
6,264 ft1,909 m
7:30 AM · 5:02 PM
Flags judge the racing hours: 9 am to 10 pm at the track for a drag strip. National Weather Service alerts raise them. Days marked partial are at the edge of the forecast. How the flags work
Today’s remaining 12 hours are free. Pro members get all seven days and the CSV.
Hour
Air
Dew pt
Humidity
Barometer
Density alt.
Air density kg/m³
Grains
Track temp (est.)
Wind
Rain
58°15°
27°-3°
30%
30.09 inHg1019 hPa
6,036 ft1,840 m
1.023
26
74°23°
10 mph16 km/h SW · gusts 18 mph29 km/h
0%
59°15°
27°-3°
29%
30.14 inHg1021 hPa
6,023 ft1,836 m
1.023
25
74°23°
11 mph18 km/h W · gusts 19 mph30 km/h
0%
58°14°
28°-2°
32%
30.14 inHg1021 hPa
5,978 ft1,822 m
1.025
27
69°21°
12 mph19 km/h W · gusts 20 mph32 km/h
1%
56°13°
31°-1°
39%
30.13 inHg1020 hPa
5,874 ft1,790 m
1.028
30
63°17°
13 mph21 km/h WNW
1%
53°12°
32°0°
44%
30.11 inHg1020 hPa
5,763 ft1,757 m
1.031
31
57°14°
15 mph24 km/h WNW
1%
49°9°
31°-1°
49%
30.14 inHg1021 hPa
5,515 ft1,681 m
1.039
30
49°9°
11 mph18 km/h WNW · gusts 21 mph34 km/h
1%
46°8°
30°-1°
53%
30.16 inHg1021 hPa
5,329 ft1,624 m
1.045
29
46°8°
9 mph15 km/h WNW · gusts 20 mph33 km/h
1%
44°7°
30°-1°
56%
30.19 inHg1022 hPa
5,220 ft1,591 m
1.048
29
44°7°
9 mph14 km/h WNW · gusts 17 mph27 km/h
1%
43°6°
32°0°
65%
30.21 inHg1023 hPa
5,109 ft1,557 m
1.052
31
43°6°
7 mph12 km/h N
2%
40°4°
30°-1°
68%
30.22 inHg1023 hPa
4,945 ft1,507 m
1.057
29
40°4°
5 mph7 km/h N
1%
38°4°
29°-2°
69%
30.23 inHg1024 hPa
4,846 ft1,477 m
1.060
28
38°4°
4 mph7 km/h NW
1%
37°3°
28°-2°
69%
30.24 inHg1024 hPa
4,791 ft1,460 m
1.062
27
37°3°
4 mph7 km/h NW
3%
Every hour from the forecast, the same arithmetic as the pit box above (NWS density-altitude formula; track temperature is an estimate). Hours are track time.
Raceway Weather Pro
Plan the whole week at Lost Creek
Pit box, all week
Every forecast hour for the next seven days at Lost Creek: density altitude, air density, grains, track temp and more, with a CSV for the tuning laptop.
Do the models agree?
ECMWF, GFS and ICON side by side for the next three racing days, so you know when the forecast is shaky.
Next 6 hours of rain
Rain in 15-minute steps for the next six hours at your tracks, refreshed every hour.
Alerts for your tracks
An email the morning a red or yellow flag is due at Lost Creek, and a heads-up three days out.
Typical for November here: highs around 43°6°, lows 23°-5°, rain on 29% of days.
Month by month
Average highs and lows, rain days, gusty days, freezing and hot days for all twelve months at Lost Creek, from 5 years of records. Part of Raceway Weather Pro.
Partly cloudyTemperature 59°15°Rain chance 0%Wind 11 mph18 km/hWTrack temperature 74°23°Density altitude 6,023 ft1,836 m
OvercastTemperature 58°14°Rain chance 1%Wind 12 mph19 km/hWTrack temperature 69°21°Density altitude 5,978 ft1,822 m
OvercastTemperature 46°8°Rain chance 1%Wind 9 mph15 km/hWNWTrack temperature 46°8°Density altitude 5,329 ft1,624 m
Partly cloudyTemperature 43°6°Rain chance 2%Wind 7 mph12 km/hNTrack temperature 43°6°Density altitude 5,109 ft1,557 m
Mostly clearTemperature 40°4°Rain chance 1%Wind 5 mph7 km/hNTrack temperature 40°4°Density altitude 4,945 ft1,507 m