McChord Air Force Base

KTCM / TCM

Tacoma, US

Last Updated
May 15, 06:55Z

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
Fresh 27 min ago
06:55Z

☀️ Day
VFR
Flight Rules
9°C
Temperature
Dewpoint: 8°C
10 kt
210°
10 SM
Visibility
Ceiling
Unlimited
1020 hPa
QNH
Altimeter Setting

Raw METAR

METAR KTCM 150655Z AUTO 21010KT 10SM CLR 09/08 A3013 RMK AO2 SLP207 T00910079 $

Weather Briefing

VFR

McChord Air Force Base is currently reporting visual flight rules (VFR) conditions with clear skies and 10 SM visibility.

Wind Analysis

Winds are from the south-southwest (210°) at 10 knots. Runway 16/34 is favored with a 6-knot headwind and 8-knot crosswind component.

Visibility & Ceiling

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

Temperature & Moisture

Temperature is 9°C (48°F) with a dewpoint of 8°C. The temperature-dewpoint spread is very narrow, indicating saturated or near-saturated air. Fog formation or low cloud development is likely.

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. Expected weather includes: Light Showers Rain.

Pilot Recommendations

Conditions are favorable for visual flight. The narrow temperature-dewpoint spread creates risk of fog formation, particularly during evening and early morning hours. 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
1020 hPa
Sea Level Pressure
For altitude above MSL
QFE
1009 hPa
Field Pressure
Height above aerodrome (322 ft)
Pressure Alt
120 ft
QNE Reference
Standard: 1013 hPa
Density Altitude: -523 ft
ISA Deviation: -5.4°C

Forecast (TAF)

View Full TAF
Raw TAF
TAF KTCM 150500Z 1505/1611 21010G15KT 9999 VCSH SCT006 SCT015 BKN023 OVC080 610505 QNH3010INS BECMG 1507/1508 20012KT 9999 NSW FEW025 BKN035 620409 QNH3013INS BECMG 1517/1518 21012G20KT 9000 -SHRA FEW008 SCT015 BKN025 OVC050 610409 510005 QNH3002INS BECMG 1602/1603 20010G15KT 9999 VCSH BKN022 OVC040 610406 QNH3002INS TX11/1523Z TN08/1513Z
Upcoming Changes (Next 12 Hours)
07:22Z BASE
+0h
MVFR 210° 10 kt
Visibility: 10+ km
Ceiling: 2,300 ft
17:00Z BECMG
+10h
MVFR 210° 12 kt
Visibility: 9 km
Ceiling: 2,500 ft
Light Showers 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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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: 16
10,108 ft 150 ft ASP 180°
6.4 kt 7.7 kt
50° angle
160/340 3,000 ft 60 ft ASPH
8.7 kt 5.0 kt
150° angle
🟢 Active Runway: Best headwind component for current conditions
⬆️ Headwind: Favorable wind component
↔️ Crosswind: ≤10kt Safe, 11-15kt Caution, >15kt Challenging

Weather Statistics - KTCM

11,771 observations | Sep 2025 - May 2026

Flight Rules Distribution

VFR
56.2%
MVFR
22.3%
IFR
10%
LIFR
11.5%

McChord Air Force Base is frequently affected by reduced visibility conditions, with VFR weather only 56.2% of the time and IFR/LIFR conditions occurring in 21.5% of observations. Prevailing winds are from the S averaging 7.1 knots, with gusts recorded up to 31 knots. Calm conditions occur 38.3% of the time. Temperature extremes range from -7°C to 33°C, reflecting significant seasonal variation. The best months for VFR flying are September, October, February.

Wind Analysis

Prevailing Direction: S (180°)
Average Speed: 7.1 kt
Maximum Recorded: 31 kt
Calm Winds: 38.3%
Direction Distribution:
E
2.2%
N
3.5%
S
23.7%
W
5%
NE
4.2%
NW
2.2%
SE
3.3%
SW
17.4%

Temperature Range

Average: 8°C
Range: -7°C to 33°C
-7°C 33°C

Visibility

Average: 9.2 SM
Below 3 SM: 2.1%
Fog Frequency: 7.9%

Best Months for VFR

September October February

Runway Wind Analysis

Runway 16/34
Favorable wind: 100%
Avg crosswind: 4.7 kt
Runway 160/340
Favorable wind: 100%
Avg crosswind: 4.7 kt

Statistics computed from 11,771 METAR observations (Sep 2025 - May 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.