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Gray Army Air Field, Washington

Medium airport in Pierce County, Washington

Air quality

The air at Gray Army Air Field

Index 59, moderate, led by fine particles. Read at 1 AM from its reporting area, Tacoma-Puyallup (WA), 10 miles off.

59Moderate
  • Fine particles (PM2.5)59Moderate9.5 mi
  • Ozone-1 ppb11.9 mi

The days ahead

Good each day through Sat Oct 17, led by fine particles. Yesterday measured 48, good.

Smoke, the next 41 hours

Little smoke near the ground through Sat 5 PM: the index from smoke stays at 28 or under.

FriSat

Precipitation

What has fallen at Gray Army Air Field

None in the last 3 days, to Fri 12 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 Gray Army Air Field, the next 41 hours

Visibility stays 7 miles or more through Sat 5 PM, lowest 8 miles Sat 5 AM.

FriSat

Airfield

Code
GRF
ICAO
KGRF
IATA
GRF
Field elevation
300 ft
Serves
Joint Base Lewis McChord
Kind
Medium airport
Scheduled service
No
Its own instrument
GRF
Wind now
Calm, read 16 Oct, 00:55

Runways

RunwayLengthWidthSurfaceHeading, trueWind along it nowCrosswind now
15 / 336,124 ft150 ftAsphalt166° / 346°CalmCalm
15332,000 ftN
Runways from their surveyed ends, north up, lengths and positions to scale.

Measured here

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

Every hour from Fort Lewis/Gray AAF (GRF), Gray Army Air Field's own instrument, measure by measure, on the field's own clock.

Temperature

45 F at 12 AM; 68 F at its warmest, 3 PM Thursday, and 45 F at its coolest, 12 AM.

Now
45F
12 AM
Highest
68F
3 PM Thursday
Lowest
45F
12 AM
Temperature and Dew point at Fort Lewis/Gray AAF, temperature from 45.3 to 68.0, the latest 45.3; dew point from 44.0 to 51.9, the latest 44.0, in degrees Fahrenheit.TEMPERATURE AND DEW POINTF405060703 AM6 AM9 AM12 PM3 PM6 PM9 PMOct 16TEMPERATUREDEW POINT

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

Humidity and dew point

A dew point of 44 F, the air 95% saturated; the humidity ran from 54% at 3 PM Thursday to 97% at 5 AM Thursday.

Dew point now
44F
12 AM
Humidity now
95%
Humidity, range
54 to 97%
Relative humidity at Fort Lewis/Gray AAF, relative humidity from 54 to 97, the latest 95, in per cent.RELATIVE HUMIDITY%4060801003 AM6 AM9 AM12 PM3 PM6 PM9 PMOct 16

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

Wind

Calm at 12 AM; at its strongest 9 mph, 8 AM Thursday, and no gust reported.

Now
0mph
calm
Strongest
9mph
8 AM Thursday
Highest gust
-
none reported
Wind at Fort Lewis/Gray AAF, wind from 0 to 9, the latest 0, in miles an hour.WINDmph02.557.5103 AM6 AM9 AM12 PM3 PM6 PM9 PMOct 16
Wind direction at Fort Lewis/Gray AAF, wind direction from 300 to 360, the latest 300, in degrees.WIND DIRECTION°0901802703603 AM6 AM9 AM12 PM3 PM6 PM9 PMOct 16

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

Pressure

30.21 inHg at 12 AM, steady over 3 hours; 0.13 inHg lower than a day before.

Now
30.21inHg
12 AM
3 hours
-0.02inHg
steady
24 hours
-0.13inHg
Pressure, altimeter at Fort Lewis/Gray AAF, pressure, altimeter from 30.21 to 30.37, the latest 30.21, in inches of mercury.PRESSURE, ALTIMETERinHg30.2030.2530.3030.3530.403 AM6 AM9 AM12 PM3 PM6 PM9 PMOct 16

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

Visibility

Down to 0.9 miles at 7 AM Thursday, under a mile for 1 hour; 6 miles now.

Now
6mi
Lowest
0.9mi
7 AM Thursday
Hours under a mile
1
Visibility at Fort Lewis/Gray AAF, visibility from 0.9 to 10.0, the latest 6.0, in miles.VISIBILITYmi02.557.5103 AM6 AM9 AM12 PM3 PM6 PM9 PMOct 16LIFRIFRMVFRVFR

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

Cloud base

The lowest cloud base came down to 100 ft at 6 AM Thursday; a base was reported in 11 of the hours.

Lowest base now
-
Lowest in 24 hours
100ft
6 AM Thursday
Hours with a base reported
11
Lowest cloud base at Fort Lewis/Gray AAF, lowest cloud base from 100 to 1,000, the latest 1,000, in feet.LOWEST CLOUD BASEft02505007501,0003 AM6 AM9 AM12 PM3 PM6 PM9 PMOct 16LIFRIFR

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

Fort Lewis/Gray AAF: 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 Gray Army Air Field, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 0.1 miles away.

measured now3 instruments

Fort Lewis/Gray AAFGRF

At an airfield/0.1 mi away/302 ft/2 ft above here

temp, wind, gust, visibility, precip, pressure

Nisqually RiverTNISQ

Beside a road/6.4 mi away/23 ft/277 ft below here

temp, pavement temp, wind, visibility, precip

Deschutes Falls ParkDFPW1

At a river or reservoir gauge/20.4 mi away/915 ft/615 ft above here

temp, wind, gust, humidity, pressure

measured daily2 instruments

DuPont 1.0 SEWA-PR-72

In a volunteer observer's own ground/2.9 mi away/242 ft/58 ft below here

precip, snowfall, snow depth

Tacoma No. 1TACW1

At a cooperative observer's station/14.1 mi away/6 ft/294 ft below here

snowfall, snow depth, precip, high, low

-

Snow on the ground

Elsewhere in Washington

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

Near Gray Army Air Field

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

Near Gray Army Air Field