Gray Army Air Field

KGRF / GRF

Fort Lewis/Tacoma, US

Last Updated
Mar 5, 03:55Z

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 31 min ago
03:55Z

🌙 Night
VFR
Flight Rules
8°C
Temperature
Dewpoint: 6°C
6 kt
120°
10 SM
Visibility
Ceiling
Unlimited
1017 hPa
QNH
Altimeter Setting

Raw METAR

METAR KGRF 050355Z AUTO 12006KT 10SM CLR 08/06 A3004 RMK AO2 SLP177 T00820058 $
QNH
1017 hPa
Sea Level Pressure
For altitude above MSL
QFE
1007 hPa
Field Pressure
Height above aerodrome (300 ft)
Pressure Alt
188 ft
QNE Reference
Standard: 1013 hPa
Density Altitude: -580 ft
ISA Deviation: -6.4°C

Forecast (TAF)

View Full TAF
Raw TAF
TAF KGRF 041300Z 0413/0519 19003KT 9000 -RA FEW030 BKN040 OVC055 620555 QNH2978INS BECMG 0414/0415 15005KT 9000 -RA BKN015 OVC030 620555 QNH2980INS TEMPO 0416/0418 6000 RA BR BECMG 0419/0420 23012G20KT 9999 VCSH SCT015 OVC030 610604 520054 QNH2986INS BECMG 0422/0423 23012G18KT 9999 NSW BKN025 OVC040 620604 510054 QNH2992INS TX09/0418Z TN08/0413Z
Upcoming Changes (Next 12 Hours)
04:25Z BASE
+0h
VFR 190° 3 kt
Visibility: 9 km
Ceiling: 4,000 ft
Light Rain

24-Hour Weather Evolution

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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
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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°
5.2 kt 3.0 kt
30° 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.