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Colstrip Airport, Montana

Small airport in Rosebud County, Montana

Air quality

The air at Colstrip Airport

Index 38, good, led by fine particles. Read at 2 AM from its reporting area, Sheridan (WY), 74 miles off.

38Good
  • Fine particles (PM2.5)38Good-
  • Coarse particles (PM10)6Good-

The days ahead

Yesterday measured 30, good.

Smoke, the next 40 hours

No smoke near the ground through Sat 6 PM.

FriSat

Precipitation

What has fallen at Colstrip Airport

None in the last 3 days, to Fri 2 AM. Measured by radar and rain gauges, as water.

Last 24 hours
0.00in
Last 3 days
0.00in

Visibility

How far you can see at Colstrip Airport, the next 40 hours

Visibility stays 10 miles or more through Sat 6 PM.

FriSat

Airfield

Code
M46
ICAO
-
IATA
-
Field elevation
3,426 ft
Serves
Colstrip
Kind
Small airport
Scheduled service
No
Its own instrument
M46
Wind now
From 250° at 5 mph, read 16 Oct, 02:35

Runways

RunwayLengthWidthSurfaceHeading, trueWind along it nowCrosswind now
06 / 245,100 ft75 ftAsphalt74° / 254°5 mph head, on 24None
06242,000 ftN250° 5 mph
Runways from their surveyed ends, north up, lengths and positions to scale; the rose in the corner is the wind now.

Measured here

What the airfield's own instrument measured, the last 24 hours

Every hour from Colstrip (M46), Colstrip Airport's own instrument, measure by measure, on the field's own clock.

Temperature

25 F at 2 AM; 49 F at its warmest, 12 PM Thursday, and 25 F at its coolest, 2 AM.

Now
25F
2 AM
Highest
49F
12 PM Thursday
Lowest
25F
2 AM
Temperature and Dew point at Colstrip, temperature from 25.5 to 48.5, the latest 25.5; dew point from 22.0 to 36.9, the latest 22.0, in degrees Fahrenheit.TEMPERATURE AND DEW POINTF203040506 AM9 AM12 PM3 PM6 PM9 PMOct 163 AMFREEZINGTEMPERATUREDEW POINT

How it is measured: Stevenson screen and siting, Field Book FB-INS-009

Humidity and dew point

A dew point of 22 F, the air 86% saturated; the humidity ran from 38% at 5 PM Thursday to 86% at 2 AM.

Dew point now
22F
2 AM
Humidity now
86%
Humidity, range
38 to 86%
Relative humidity at Colstrip, relative humidity from 38 to 86, the latest 86, in per cent.RELATIVE HUMIDITY%204060801006 AM9 AM12 PM3 PM6 PM9 PMOct 163 AM

How it is measured: Humidity variables, Field Book FB-WAT-002

Wind

5 mph from the west southwest at 2 AM; at its strongest 25 mph, 12 PM Thursday, with a gust of 36 mph at 12 PM Thursday.

Now
5mph
from the west southwest
Strongest
25mph
12 PM Thursday
Highest gust
36mph
12 PM Thursday
Wind and Gust at Colstrip, wind from 3 to 25, the latest 5; gust from 28 to 36, the latest 28, in miles an hour.WIND AND GUSTmph0102030406 AM9 AM12 PM3 PM6 PM9 PMOct 163 AMWINDGUST
Wind direction at Colstrip, wind direction from 250 to 340, the latest 250, in degrees.WIND DIRECTION°0901802703606 AM9 AM12 PM3 PM6 PM9 PMOct 163 AM

How it is measured: Coriolis as geometry, Field Book FB-ENG-008

Pressure

30.72 inHg at 2 AM, falling 0.04 inHg over 3 hours; 0.31 inHg higher than a day before.

Now
30.72inHg
2 AM
3 hours
-0.04inHg
falling
24 hours
+0.31inHg
Pressure, altimeter at Colstrip, pressure, altimeter from 30.41 to 30.76, the latest 30.72, in inches of mercury.PRESSURE, ALTIMETERinHg30.4030.5030.6030.7030.806 AM9 AM12 PM3 PM6 PM9 PMOct 163 AM

How it is measured: Hydrostatic balance, Field Book FB-ENG-003

Visibility

Down to 8 miles at 9 AM Thursday; 8 miles now.

Now
8mi
Lowest
8mi
9 AM Thursday
Hours under a mile
0
Visibility at Colstrip, visibility from 8.0 to 10.0, the latest 8.0, in miles.VISIBILITYmi02.557.5106 AM9 AM12 PM3 PM6 PM9 PMOct 163 AMLIFRIFRMVFRVFR

How it is measured: Fog types, Field Book FB-WAT-020

Cloud base

The lowest cloud base came down to 7,000 ft at 7 AM Thursday; a base was reported in 5 of the hours.

Lowest base now
-
Lowest in 24 hours
7,000ft
7 AM Thursday
Hours with a base reported
5
Lowest cloud base at Colstrip, lowest cloud base from 7,000 to 8,500, the latest 8,500, in feet.LOWEST CLOUD BASEft7,0007,5008,0008,5006 AM9 AM12 PM3 PM6 PM9 PMOct 163 AMVFR

How it is measured: Cloud classification, Field Book FB-SKY-001

Precipitation

None measured in the gauge in the last 24 hours.

Last 24 hours
0.00in
Wettest hour
-
Hours with some
0

How it is measured: ASOS, Field Book FB-INS-002

Colstrip: every reading, the last 7 days, 30 days and the year, and how well it reports

What is measuring near here

The 5 instruments nearest Colstrip Airport, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 0.0 miles away.

measured now3 instruments

ColstripM46

At an airfield/0.0 mi away/3,425 ft/1 ft below here

temp, wind, gust, visibility, precip, pressure

Badger PeakBAFM8

At a river or reservoir gauge/17.3 mi away/4,193 ft/767 ft above here

temp, wind, gust, humidity, pressure

measured daily2 instruments

ColstripCOLM8

At a cooperative observer's station/4.6 mi away/3,225 ft/201 ft below here

snowfall, snow depth, precip, high, low

Colstrip 0.6 NE (Closed)MT-RB-13

In a volunteer observer's own ground/5.3 mi away/3,229 ft/197 ft below here

precip, snowfall, snow depth

-

Snow on the ground

Elsewhere in Montana

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Near Colstrip Airport

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Near Colstrip Airport