Manassas Regional Airport/Harry P. Davis Field

KHEF / MNZ

Manassas, US

Last Updated
Apr 19, 03:56Z

Current Weather

Display Units
Recent 48 min ago
03:56Z

🌙 Night
VFR
Flight Rules
21°C
Temperature
Dewpoint: 15°C
6 kt
Variable
10 SM
Visibility
10,000 ft
Ceiling
Above Ground Level
1010 hPa
QNH
Altimeter Setting

Raw METAR

METAR KHEF 190356Z AUTO VRB06KT 10SM OVC100 21/15 A2984 RMK AO2 SLP108 T02060150 403000094 $

Clouds - Visual Profile

12,000ft
9,000ft
6,000ft
3,000ft
Ground
Field Elev: 192 ft
OVC 10,000 ft AGL
☁️
OVC
Overcast (8/8 sky coverage)
10,000 ft
AGL (Above Ground)
10,192 ft AMSL

Weather Briefing

VFR

Manassas Regional Airport/Harry P. Davis Field is currently reporting visual flight rules (VFR) conditions with overcast skies at 10,000 feet and 10 SM visibility.

Wind Analysis

Winds are from the variable directions at 6 knots.

Visibility & Ceiling

Visibility is 10 SM. The ceiling is 10000 feet AGL (overcast), well above standard VFR minimums.

Temperature & Moisture

Temperature is 21°C (70°F) with a dewpoint of 15°C, indicating moderate moisture conditions.

Pilot Recommendations

Conditions are favorable for visual flight.

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

QNH
1010 hPa
Sea Level Pressure
For altitude above MSL
QFE
1004 hPa
Field Pressure
Height above aerodrome (192 ft)
Pressure Alt
290 ft
QNE Reference
Standard: 1013 hPa
Density Altitude: 1,056 ft
ISA Deviation: +6.4°C

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
HEF
16L
34R
16R
34L

Runway Information

Runway Length Width Surface Heading Wind Component
16L/34R 5,700 ft 100 ft ASP 150° No wind data
16R/34L 3,702 ft 100 ft ASP 150° No wind data
🟢 Active Runway: Best headwind component for current conditions
⬆️ Headwind: Favorable wind component
↔️ Crosswind: ≤10kt Safe, 11-15kt Caution, >15kt Challenging

Weather Statistics - KHEF

5,725 observations | Sep 2025 - Apr 2026

Flight Rules Distribution

VFR
76.1%
MVFR
11.3%
IFR
7.5%
LIFR
5.1%

Manassas Regional Airport/Harry P. Davis Field typically experiences VFR conditions 76.1% of the time, though instrument-rated pilots will find IFR weather present approximately 12.6% of observations. Prevailing winds are from the N averaging 7.8 knots. Calm conditions occur 30% of the time. Temperature extremes range from -18°C to 34°C, reflecting significant seasonal variation. The best months for VFR flying are April, October, November.

Wind Analysis

Prevailing Direction: N (0°)
Average Speed: 7.8 kt
Maximum Recorded: 30 kt
Calm Winds: 30%
Direction Distribution:
N
18%
NE
3.5%
E
4.5%
SE
4.8%
S
16.2%
SW
7.1%
W
4.1%
NW
11.9%

Temperature Range

Average: 7.7°C
Range: -18°C to 34°C
-18°C 34°C

Visibility

Average: 9.3 SM
Below 3 SM: 3.1%
Fog Frequency: 2.8%

Best Months for VFR

April October November

Runway Wind Analysis

Runway 16L/34R
Favorable wind: 100%
Avg crosswind: 3.6 kt
Runway 16R/34L
Favorable wind: 100%
Avg crosswind: 3.6 kt

Statistics computed from 5,725 METAR observations (Sep 2025 - Apr 2026). Data sourced from official aviation weather services. Updated daily.

Manassas Regional Airport/Harry P. Davis Field - Airport Information

Airport Details

ICAO Code: KHEF
IATA Code: MNZ
Type: medium airport
Status: active
Elevation: 192 ft MSL

Location

City: Manassas
Country: US
Latitude: 38.721401°
Longitude: -77.515404°
Time Zone: Etc/GMT+5

Runway Information

Runway 16L/34R
Length: 5,700 ft
Width: 100 ft
Surface: ASP
ILS: No
Runway 16R/34L
Length: 3,702 ft
Width: 100 ft
Surface: ASP
ILS: No

About Manassas Regional Airport/Harry P. Davis Field

Overview

Manassas Regional Airport/Harry P. Davis Field serves the metropolitan Washington D.C. area as a strategic medium airport located in Prince William County, Virginia. Positioned at 192 feet above mean sea level, the airport provides critical general aviation infrastructure for the Northern Virginia region. Its two asphalt runways offer substantial operational flexibility for pilots navigating the busy mid-Atlantic airspace.

Flying Conditions

Weather conditions at Manassas demonstrate highly favorable VFR operations, with 76.9% of observations reporting visual flight rules. Seasonal temperature variations are significant, ranging from -13°C to 32°C, which pilots should carefully consider during preflight planning. Wind patterns are predominantly northerly at an average of 7.3 knots, with calm conditions occurring 33.1% of the time, making for generally stable flying environments.

Notable Features

The airport features two parallel runways: 16L/34R at 5,700 feet and 16R/34L at 3,702 feet, both constructed with asphalt surfaces. Both runways demonstrate 100% favorable wind alignments, with consistently low average crosswind conditions of 3.5 knots. The airport's elevation and geographic location provide relatively predictable meteorological conditions, particularly during autumn and winter months.

Approach Considerations

October, January, and November represent the most consistent VFR months for airport operations. Pilots can expect average visibility of 9.4 statute miles, with only 1.8% of observations reporting visibility below 3 statute miles. Fog occurs in just 2.3% of observations, suggesting generally clear approach conditions. Both runways offer reliable wind alignments, allowing flexible approach and departure options.

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.