Gray Army Air Field

KGRF / GRF

Fort Lewis/Tacoma, US

Last Updated
Jul 24, 22:55Z

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 56 min ago
22:55Z

🌙 Night
VFR
Flight Rules
28°C
Temperature
Dewpoint: 14°C
9 kt
250°
10 SM
Visibility
Ceiling
Unlimited
1011 hPa
QNH
Altimeter Setting

Raw METAR

METAR KGRF 242255Z AUTO 25009KT 10SM CLR 28/14 A2986 RMK AO2 SLP114 T02790141 $

Weather Briefing

VFR

Gray Army Air Field is currently reporting visual flight rules (VFR) conditions with clear skies and 10 SM visibility.

Wind Analysis

Winds are from the west-southwest (250°) at 9 knots. Runway 33 is favored with a 2-knot headwind and 9-knot crosswind component.

Visibility & Ceiling

Visibility is 10 SM. Skies are clear with unlimited ceiling.

Temperature & Moisture

Temperature is 28°C (82°F) with a dewpoint of 14°C, indicating relatively dry conditions.

Forecast Outlook

The TAF forecast covers the next 30 hours. Conditions are expected to fluctuate between VFR and MVFR. VFR pilots should be prepared for deteriorating conditions.

Pilot Recommendations

Conditions are favorable for visual flight. The forecast indicates conditions may deteriorate. Ensure you have fuel reserves and a viable alternate airport.

This briefing is generated from real-time METAR and TAF data. Always verify with official sources before flight.

QNH
1011 hPa
Sea Level Pressure
For altitude above MSL
QFE
1001 hPa
Field Pressure
Height above aerodrome (300 ft)
Pressure Alt
368 ft
QNE Reference
Standard: 1013 hPa
Density Altitude: 2,000 ft
ISA Deviation: +13.6°C

Forecast (TAF)

View Full TAF
Raw TAF
TAF KGRF 242100Z 2421/2603 24005KT 9999 SKC QNH2985INS BECMG 2501/2502 26010G15KT 9999 SKC 510309 QNH2986INS BECMG 2507/2508 20009KT 9999 BKN013 QNH2991INS BECMG 2510/2511 19009KT 9999 OVC012 QNH2992INS BECMG 2515/2516 20010G15KT 9999 BKN020 510006 QNH2993INS BECMG 2517/2518 21012G18KT 9999 BKN030 BKN080 510009 QNH2994INS BECMG 2520/2521 22012G19KT 9999 BKN040 BKN060 OVC080 510003 QNH2994INS BECMG 2602/2603 22010G15KT 9999 SCT040 BKN060 OVC080 QNH2996INS TX27/2423Z TN13/2512Z
Upcoming Changes (Next 12 Hours)
23:50Z BASE
+0h
VFR 240° 5 kt
Visibility: 10+ km
01:00Z BECMG
+2h
VFR 260° 10 kt
Visibility: 10+ km
07:00Z BECMG
+8h
MVFR 200° 9 kt
Visibility: 10+ km
Ceiling: 1,300 ft
10:00Z BECMG
+11h
MVFR 190° 9 kt
Visibility: 10+ km
Ceiling: 1,200 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
  • • Hover for exact values and timestamps
  • • Click legend items to toggle data series
  • • Zoom and pan for detailed analysis
  • • Units automatically converted to preferences
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°
1.6 kt 8.9 kt
100° angle
🟢 Active Runway: Best headwind component for current conditions
⬆️ Headwind: Favorable wind component
↔️ Crosswind: ≤10kt Safe, 11-15kt Caution, >15kt Challenging

Weather Statistics - KGRF

11,379 observations | Sep 2025 - Jul 2026

Flight Rules Distribution

VFR
66%
MVFR
22.3%
IFR
9%
LIFR
2.7%

Gray Army Air Field typically experiences VFR conditions 66% of the time, though instrument-rated pilots will find IFR weather present approximately 11.7% of observations. Prevailing winds are from the SE averaging 6.8 knots. Calm conditions occur 24.5% of the time. Temperature extremes range from -6°C to 35°C, reflecting significant seasonal variation. The best months for VFR flying are September, October, July.

Wind Analysis

Prevailing Direction: SE (135°)
Average Speed: 6.8 kt
Maximum Recorded: 27 kt
Calm Winds: 24.5%
Direction Distribution:
E
12.6%
N
4%
S
13.6%
W
4.9%
NE
1.2%
NW
5.1%
SE
29%
SW
5.1%

Temperature Range

Average: 10.2°C
Range: -6°C to 35°C
-6°C 35°C

Visibility

Average: 9.4 SM
Below 3 SM: 1.4%
Fog Frequency: 3.4%

Best Months for VFR

September October July

Runway Wind Analysis

Runway 15/33
Favorable wind: 100%
Avg crosswind: 2.8 kt

Statistics computed from 11,379 METAR observations (Sep 2025 - Jul 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.