Gray Army Air Field

KGRF / GRF

Fort Lewis/Tacoma, US

Last Updated
Mar 5, 02:40Z

Military Airport

Restricted

This is a U.S. military installation. Civil aircraft operations are generally prohibited without prior authorization.

Access Notes:

Most military airfields closed to civil traffic; some joint-use exceptions exist

Consult official AIP (FAA AIP GEN 3.3) for current access procedures and restrictions.

Current Weather

Display Units
Fresh 12 min ago
02:40Z

🌙 Night
MVFR
Flight Rules
10°C
Temperature
Dewpoint: 6°C
7 kt
140°
10 SM
Visibility
2,700 ft
Ceiling
Above Ground Level
1016 hPa
QNH
Altimeter Setting

Raw METAR

SPECI KGRF 050240Z AUTO 14007KT 10SM BKN027 BKN033 10/06 A3001 RMK AO2 SLP167 $

Clouds - Visual Profile

12,000ft
9,000ft
6,000ft
3,000ft
Ground
Field Elev: 300 ft
BKN 2,700 ft AGL
BKN 3,300 ft AGL
☁️
BKN
Broken (5/8-7/8 sky coverage)
2,700 ft
AGL (Above Ground)
3,000 ft AMSL
☁️
BKN
Broken (5/8-7/8 sky coverage)
3,300 ft
AGL (Above Ground)
3,600 ft AMSL
QNH
1016 hPa
Sea Level Pressure
For altitude above MSL
QFE
1006 hPa
Field Pressure
Height above aerodrome (300 ft)
Pressure Alt
218 ft
QNE Reference
Standard: 1013 hPa
Density Altitude: -310 ft
ISA Deviation: -4.4°C

Forecast (TAF)

View Full TAF
Raw TAF
TAF KGRF 042100Z 0421/0603 18010G15KT 9999 VCSH BKN015 OVC020 620509 QNH2986INS BECMG 0423/0424 21009KT 9999 NSW BKN030 OVC050 620457 QNH2998INS BECMG 0511/0512 24009KT 9000 -RA BKN020 OVC025 620353 QNH3008INS BECMG 0519/0520 24006KT 9999 NSW BKN030 600302 QNH3029INS TX12/0500Z TN05/0515Z
Upcoming Changes (Next 12 Hours)
02:52Z BASE
+0h
MVFR 180° 10 kt
Visibility: 10+ km
Ceiling: 1,500 ft
11:00Z BECMG
+9h
MVFR 240° 9 kt
Visibility: 9 km
Ceiling: 2,000 ft
Light Rain

24-Hour Weather Evolution

Loading weather data...
Data Sources
  • • Current conditions from METAR observations
  • • Historical data from past 24 hours
  • • No forecast or predicted data included
  • • Data updated with each new METAR report
Chart Features
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  • • Click legend items to toggle data series
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Note: Future values beyond current TAF validity are estimates based on climatological data and trends. Always verify with current forecasts before flight operations.

Airport Runway Layout

N
GRF
15 ✈️
33

Runway Information

Runway Length Width Surface Heading Wind Component
✈️ 15/33
Active: 15
6,125 ft 150 ft ASP 167°
6.9 kt 1.2 kt
10° angle
🟢 Active Runway: Best headwind component for current conditions
⬆️ Headwind: Favorable wind component
↔️ Crosswind: ≤10kt Safe, 11-15kt Caution, >15kt Challenging

Weather Statistics - KGRF

6,790 observations | Sep 2025 - Mar 2026

Flight Rules Distribution

VFR
65.1%
MVFR
19.7%
IFR
11%
LIFR
4.1%

Gray Army Air Field typically experiences VFR conditions 65.1% of the time, though instrument-rated pilots will find IFR weather present approximately 15.1% of observations. Prevailing winds are from the SE averaging 6.8 knots. Calm conditions occur 30.3% of the time. Temperature extremes range from -6°C to 32°C, reflecting significant seasonal variation. The best months for VFR flying are September, March, October.

Wind Analysis

Prevailing Direction: SE (135°)
Average Speed: 6.8 kt
Maximum Recorded: 27 kt
Calm Winds: 30.3%
Direction Distribution:
N
4.3%
NE
1.6%
E
15.1%
SE
30.2%
S
9.7%
SW
2.5%
W
2.5%
NW
3.9%

Temperature Range

Average: 8.2°C
Range: -6°C to 32°C
-6°C 32°C

Visibility

Average: 9.2 SM
Below 3 SM: 2.2%
Fog Frequency: 5.7%

Best Months for VFR

September March October

Runway Wind Analysis

Runway 15/33
Favorable wind: 100%
Avg crosswind: 2.7 kt

Statistics computed from 6,790 METAR observations (Sep 2025 - Mar 2026). Data sourced from official aviation weather services. Updated daily.

Gray Army Air Field - Airport Information

Airport Details

ICAO Code: KGRF
IATA Code: GRF
Type: medium airport
Status: active
Elevation: 300 ft MSL

Location

City: Fort Lewis/Tacoma
Country: US
Latitude: 47.079201°
Longitude: -122.581001°
Time Zone: Etc/GMT+8

Runway Information

Runway 15/33
Length: 6,125 ft
Width: 150 ft
Surface: ASP
ILS: No

About Gray Army Air Field

Gray Army Air Field is a military facility. Civilian access may be restricted or require Prior Permission (PPR). Pilots should consult the US AIP for current access procedures and restrictions.

Overview

Gray Army Air Field serves Joint Base Lewis-McChord near Tacoma, Washington, supporting military aviation operations. Located at 300 feet mean sea level, the airport provides critical infrastructure for tactical and transport aircraft in the Pacific Northwest region.

Flying Conditions

Pilots can expect predominantly VFR conditions 62.3% of the time, with marginal VFR occurring in 20.9% of observations. Seasonal temperature variations range from -4°C to 32°C, creating diverse flying environments throughout the year. Southeast winds at an average of 7 knots characterize the local wind pattern, with calm conditions observed 29.8% of the time.

Notable Features

The single runway 15/33 is 6,125 feet long with an asphalt surface, providing adequate length for medium-sized military aircraft. The airport's location near Tacoma offers strategic positioning with consistent wind conditions that strongly favor runway alignment, with wind parameters supporting runway operations 100% of the time.

Approach Considerations

Approach planning should consider the prevailing southeast winds, with an average crosswind of only 2.7 knots. Visibility typically remains good, averaging 9.2 statute miles, though pilots should be prepared for occasional reduced visibility periods, with fog present in 5.6% of observations and visibility below 3 miles in 2.2% of reports.

Data Sources & Accuracy: Airport information sourced from OurAirports.com, a collaborative database of worldwide airport data. Weather data from official aviation weather services including NOAA Aviation Weather Center and international METAR/TAF providers. Information is updated regularly but pilots should always verify current conditions and NOTAMs through official channels before flight operations.

Official Data Sources

Weather NOAA Aviation Weather Center • International METAR/TAF Network
Airports OurAirports.com • Public domain airport database
NOTAMs FAA NOTAM System • ICAO NOTAM Distribution
Last updated: Jan 1, 1970 12:00 AM UTC

Disclaimer: Data is provided for informational purposes only. Pilots must verify all information through official sources before flight operations. Weather conditions change rapidly; always obtain a current briefing from approved weather services.