Gray Army Air Field

KGRF / GRF

Fort Lewis/Tacoma, US

Last Updated
Mar 5, 04:55Z

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
Recent 48 min ago
04:55Z

🌙 Night
VFR
Flight Rules
7°C
Temperature
Dewpoint: 6°C
5 kt
130°
10 SM
Visibility
Ceiling
Unlimited
1018 hPa
QNH
Altimeter Setting

Raw METAR

METAR KGRF 050455Z AUTO 13005KT 10SM FEW024 07/06 A3006 RMK AO2 SLP184 T00720055 $

Clouds - Visual Profile

12,000ft
9,000ft
6,000ft
3,000ft
Ground
Field Elev: 300 ft
FEW 2,400 ft AGL
🌤️
FEW
Few (1/8-2/8 sky coverage)
2,400 ft
AGL (Above Ground)
2,700 ft AMSL
QNH
1018 hPa
Sea Level Pressure
For altitude above MSL
QFE
1008 hPa
Field Pressure
Height above aerodrome (300 ft)
Pressure Alt
158 ft
QNE Reference
Standard: 1013 hPa
Density Altitude: -730 ft
ISA Deviation: -7.4°C

Forecast (TAF)

View Full TAF
Raw TAF
TAF KGRF 050500Z 0505/0611 13009KT 9999 BKN025 QNH3006INS TEMPO 0505/0508 SCT025 BECMG 0508/0509 18012KT 9999 BKN025 620353 QNH3010INS BECMG 0513/0515 24012G18KT 9999 SCT020 BKN030 620303 QNH3023INS BECMG 0523/0524 12006KT 9999 BKN030 620303 QNH3032INS BECMG 0606/0607 16006KT 8000 -RA BR SCT007 BKN015 OVC020 650409 540075 QNH3033INS TEMPO 0607/0611 4800 RA BR BKN007 TX12/0523Z TN05/0514Z
Upcoming Changes (Next 12 Hours)
05:42Z BASE
+0h
MVFR 130° 9 kt
Visibility: 10+ km
Ceiling: 2,500 ft
08:00Z BECMG
+3h
MVFR 180° 12 kt
Visibility: 10+ km
Ceiling: 2,500 ft
13:00Z BECMG
+8h
VFR 240° 12 kt
Visibility: 10+ km
Ceiling: 3,000 ft

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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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°
4.7 kt 1.7 kt
20° 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.