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McGhee Tyson Airport, Tennessee

Large airport in Blount County, Tennessee

Air quality

The air at McGhee Tyson Airport

Index 32, good, led by ozone. Read at 2 AM from its reporting area, Great Smoky Mtns. Natl. Park - TN (TN), 13 miles off.

32Good
  • Ozone32Good-

The days ahead

Good each day through Sat Oct 17, led by fine particles. Yesterday measured 36, good.

Smoke, the next 42 hours

Little smoke near the ground through Sat 8 PM: the index from smoke stays at 22 or under.

FriSat

Precipitation

What has fallen at McGhee Tyson 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 McGhee Tyson Airport, the next 42 hours

Visibility stays 9 miles or more through Sat 8 PM, lowest 9 miles Fri 7 AM.

FriSat

Airfield

Code
TYS
ICAO
KTYS
IATA
TYS
Field elevation
981 ft
Serves
Knoxville/Maryville
Kind
Large airport
Scheduled service
Yes
Its own instrument
TYS
Wind now
From 210° at 9 mph, read 16 Oct, 01:53

Runways

RunwayLengthWidthSurfaceHeading, trueWind along it nowCrosswind now
05L / 23R10,000 ft150 ftConcrete45° / 225°9 mph head, on 23R2 mph from the left
05R / 23L9,000 ft150 ftAsphalt45° / 225°9 mph head, on 23L2 mph from the left
05L23R05R23L2,500 ftN210° 9 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 Knoxville Municipal (TYS), McGhee Tyson Airport's own instrument, measure by measure, on the field's own clock.

Temperature

70 F at 2 AM; 88 F at its warmest, 3 PM Thursday, and 69 F at its coolest, 7 AM Thursday.

Now
70F
2 AM
Highest
88F
3 PM Thursday
Lowest
69F
7 AM Thursday
Temperature and Dew point at Knoxville Municipal, temperature from 69.0 to 88.0, the latest 70.0; dew point from 64.0 to 67.0, the latest 66.0, in degrees Fahrenheit.TEMPERATURE AND DEW POINTF607080906 AM9 AM12 PM3 PM6 PM9 PMOct 163 AMTEMPERATUREDEW POINT

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

Humidity and dew point

A dew point of 66 F, the air 87% saturated; the humidity ran from 45% at 3 PM Thursday to 90% at 4 AM Thursday.

Dew point now
66F
2 AM
Humidity now
87%
Humidity, range
45 to 90%
Relative humidity at Knoxville Municipal, relative humidity from 45 to 90, the latest 87, in per cent.RELATIVE HUMIDITY%4060801006 AM9 AM12 PM3 PM6 PM9 PMOct 163 AM

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

Wind

8 mph from the southwest at 2 AM; at its strongest 9 mph, 11 AM Thursday, and no gust reported.

Now
8mph
from the southwest
Strongest
9mph
11 AM Thursday
Highest gust
-
none reported
Wind at Knoxville Municipal, wind from 0 to 9, the latest 8, in miles an hour.WINDmph02.557.5106 AM9 AM12 PM3 PM6 PM9 PMOct 163 AM
Wind direction at Knoxville Municipal, wind direction from 150 to 280, the latest 230, 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

30.04 inHg at 2 AM, steady over 3 hours; 0.06 inHg lower than a day before.

Now
30.04inHg
2 AM
3 hours
+0.00inHg
steady
24 hours
-0.06inHg
Pressure, altimeter at Knoxville Municipal, pressure, altimeter from 30.03 to 30.14, the latest 30.04, in inches of mercury.PRESSURE, ALTIMETERinHg30.0030.0530.1030.156 AM9 AM12 PM3 PM6 PM9 PMOct 163 AM

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

Visibility

Down to 6 miles at 11 AM Thursday; 10 miles or more now.

Now
10+mi
Lowest
6mi
11 AM Thursday
Hours under a mile
0
Visibility at Knoxville Municipal, visibility from 6.0 to 10.0, the latest 10.0, 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 3,000 ft at 10 AM Thursday; a base was reported in 19 of the hours.

Lowest base now
-
Lowest in 24 hours
3,000ft
10 AM Thursday
Hours with a base reported
19
Lowest cloud base at Knoxville Municipal, lowest cloud base from 3,000 to 7,000, the latest 4,700, in feet.LOWEST CLOUD BASEft3,0004,0005,0006,0007,0006 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

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

What is measuring near here

The 4 instruments nearest McGhee Tyson Airport, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 0.7 miles away.

measured now2 instruments

Knoxville MunicipalTYS

At an airfield/0.7 mi away/981 ft/level with here

temp, wind, gust, visibility, precip, pressure

Indian Grave GapIGGT1

At a river or reservoir gauge/16.6 mi away/2,861 ft/1,880 ft above here

temp, wind, gust, humidity, pressure

measured daily2 instruments

Louisville 3.6 ETN-BT-49

In a volunteer observer's own ground/1.5 mi away/1,026 ft/45 ft above here

precip, snowfall, snow depth

KnoxvilleKNXT1

At a cooperative observer's station/5.3 mi away/817 ft/164 ft below here

snowfall, snow depth, precip, high, low

-

Snow on the ground

Elsewhere in Tennessee

23 places, each with its own forecast and its own instruments.

Near McGhee Tyson Airport

The nearest places, each with its own forecast and the instruments nearest it.

Near McGhee Tyson Airport