McChord Air Force Base

KTCM / TCM

Tacoma, US

Last Updated
Jul 24, 21:55Z

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
Aging 1 hour ago
21:55Z

🌙 Night
VFR
Flight Rules
27°C
Temperature
Dewpoint: 14°C
3 kt
290°
10 SM
Visibility
Ceiling
Unlimited
1013 hPa
QNH
Altimeter Setting

Raw METAR

METAR KTCM 242155Z AUTO 29003KT 10SM CLR 27/14 A2990 RMK AO2 SLP127 T02690143 $

Weather Briefing

VFR

McChord Air Force Base is currently reporting visual flight rules (VFR) conditions with clear skies and 10 SM visibility. Note: This observation is 1 hours old and conditions may have changed.

Wind Analysis

Winds are from the west-northwest (290°) at 3 knots.

Visibility & Ceiling

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

Temperature & Moisture

Temperature is 27°C (81°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
1013 hPa
Sea Level Pressure
For altitude above MSL
QFE
1002 hPa
Field Pressure
Height above aerodrome (322 ft)
Pressure Alt
330 ft
QNE Reference
Standard: 1013 hPa
Density Altitude: 1,847 ft
ISA Deviation: +12.6°C

Forecast (TAF)

View Full TAF
Raw TAF
TAF KTCM 242100Z 2421/2603 26009KT 9999 SKC QNH2987INS BECMG 2508/2509 22006KT 9999 SCT010 OVC015 QNH2993INS BECMG 2512/2513 21006KT 9999 OVC015 520406 QNH2993INS BECMG 2516/2517 22012G18KT 9999 BKN020 OVC030 520406 QNH2996INS BECMG 2522/2523 23010G15KT 9999 SCT035 OVC050 QNH2998INS TX27/2500Z TN14/2512Z
Upcoming Changes (Next 12 Hours)
22:56Z BASE
+0h
VFR 260° 9 kt
Visibility: 10+ km
08:00Z BECMG
+10h
MVFR 220° 6 kt
Visibility: 10+ km
Ceiling: 1,500 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
TCM
16
34 ✈️
160
340

Runway Information

Runway Length Width Surface Heading Wind Component
✈️ 16/34
Active: 34
10,108 ft 150 ft ASP 180°
1.9 kt 2.3 kt
50° angle
160/340 3,000 ft 60 ft ASPH
1.0 kt 2.8 kt
70° angle
🟢 Active Runway: Best headwind component for current conditions
⬆️ Headwind: Favorable wind component
↔️ Crosswind: ≤10kt Safe, 11-15kt Caution, >15kt Challenging

Weather Statistics - KTCM

14,028 observations | Sep 2025 - Jul 2026

Flight Rules Distribution

VFR
58.5%
MVFR
22.6%
IFR
9%
LIFR
9.9%

McChord Air Force Base is frequently affected by reduced visibility conditions, with VFR weather only 58.5% of the time and IFR/LIFR conditions occurring in 18.9% of observations. Prevailing winds are from the S averaging 7 knots, with gusts recorded up to 31 knots. Calm conditions occur 35% of the time. Temperature extremes range from -7°C to 34°C, reflecting significant seasonal variation. The best months for VFR flying are September, July, October.

Wind Analysis

Prevailing Direction: S (180°)
Average Speed: 7 kt
Maximum Recorded: 31 kt
Calm Winds: 35%
Direction Distribution:
E
1.9%
N
4.2%
S
22.7%
W
7%
NE
4.7%
NW
3%
SE
3%
SW
18.4%

Temperature Range

Average: 9.2°C
Range: -7°C to 34°C
-7°C 34°C

Visibility

Average: 9.3 SM
Below 3 SM: 1.7%
Fog Frequency: 6.5%

Best Months for VFR

September July October

Runway Wind Analysis

Runway 16/34
Favorable wind: 100%
Avg crosswind: 4.8 kt
Runway 160/340
Favorable wind: 100%
Avg crosswind: 4.8 kt

Statistics computed from 14,028 METAR observations (Sep 2025 - Jul 2026). Data sourced from official aviation weather services. Updated daily.

McChord Air Force Base - Airport Information

Airport Details

ICAO Code: KTCM
IATA Code: TCM
Type: medium airport
Status: active
Elevation: 322 ft MSL

Location

City: Tacoma
Country: US
Latitude: 47.137699°
Longitude: -122.475998°
Time Zone: Etc/GMT+8

Runway Information

Runway 16/34
Length: 10,108 ft
Width: 150 ft
Surface: ASP
ILS: No
Runway 160/340
Length: 3,000 ft
Width: 60 ft
Surface: ASPH
ILS: No

About McChord Air Force Base

McChord Air Force Base 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

McChord Air Force Base (KTCM) is a medium airport located in Tacoma, Washington, serving critical military aviation operations. Situated at 322 feet mean sea level, the base features two paved runways that support military and strategic airlift missions in the Pacific Northwest region.

Flying Conditions

The airport experiences diverse weather conditions, with Visual Flight Rules (VFR) prevailing 54.3% of the time. Pilots should anticipate significant variability, including Marginal VFR (20.9%) and Instrument Flight Rules (10.9%) conditions. Temperature ranges from -4°C to 33°C, with an average of 7.9°C, and wind patterns predominantly from the south at an average of 7.2 knots.

Notable Features

Located at coordinates 47.137699, -122.475998, McChord AFB offers two runways: a primary 10,108-foot runway and a secondary 3,000-foot runway. Both runways demonstrate consistent wind alignment, with 100% favorable wind conditions and an average crosswind of 4.6 knots. Visibility averages 9 statute miles, with occasional reduced visibility due to fog (10.4% occurrence).

Approach Considerations

September through November represent the most favorable VFR months for operations. Pilots should be prepared for potential reduced visibility, with 2.5% of observations showing visibility below 3 statute miles. The prevailing south winds and minimal crosswind make both runways consistently accessible, with calm conditions present 41.9% of the time.

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.