// Station · 14m ago
KHEF
Manassas Regional Airport/Harry P. Davis Field
CAT VFR
WIND 340° / 8 kt
VIS 10+ SM
CEILING CLR
T/Td 26.7°C / 21.1°C
ALTIM 29.97 inHg
ELEV 192 FT
38.7214°N / 77.5154°W
LOCATION · Manassas, US
WIND
340°8 kt
KHEF · 192 FT
© OSM · CartoDB
// Current + 24h forecast · METAR loaded · TAF loading…
METRIC
NOW · 12Z
+6H
+12H
+18H
WIND
340°/8
VIS
10+ SM
CEILING
CLR
LAYERS
—
T / Td
27 / 21
ALTIM
29.97"
// Interpretation
VFR with moderate winds at 340°/8 kt. Visibility better than 10 statute miles and no reported cloud layers. Would shift to MVFR if the ceiling drops to 3,000 ft or visibility below 5 SM.
Loading TAF forecast narrative…
// Want this glance-able on 10 airports? METAR Deck →// Raw observation METAR string + decoded
METAR KHEF 111256Z 34008KT 10SM CLR 27/21 A2997 RMK AO2 SLP151 T02670211 $
KHEF · day 11 at 12:56 UTC · wind from 340° at 8 kt · visibility 10+ SM · temp 27°C / dewpoint 21°C · altimeter 29.97" Hg · automated station w/ precipitation discriminator · sea-level pressure 1015.1 mb
// Runway analysis · computed from current METAR wind
Wind 340° @ 8 kt
2 USABLE · 2 AVOID
WIND
340°8 kt
HEADWIND
CAUTION · HIGH XW
AVOID · TAILWIND
HEADWIND ENDS
2 usable
34R★
HDG 340°
H8 kt
X0 kt —
PRIMARY · 6,200'
34L
HDG 340°
H8 kt
X0 kt —
3,715'
TAILWIND ENDS · AVOID
2 ends
16L
HDG 160°
T8 kt
X0 kt —
—
16R
HDG 160°
T8 kt
X0 kt —
—
Pattern altitude: 1,192 ft MSL (1,000 ft AGL).
Verify pattern direction and altitude with the chart supplement before flying.
// On calm winds (<3 kt), all runways are usable — favor the longest or whatever the pattern calls for.
// Density altitude · ISA +12°C
1,600FT
+1,408 FT ABOVE FIELD ELEV
FIELD ELEV192 FT
OAT+27°C
ISA DELTA+12°C
PRESSURE ALT139 FT
// Performance equivalent
Operating here right now feels like operating at K0VG
(Lee County Airport, Jonesville, elev 1,411 ft)
on a standard ISA day.
// Aircraft performance impact
MINOR
TAKEOFF ROLL
CLIMB RATE
Single-engine propC172, PA-28, Cherokee
+16%
-11%
Turbo / high-perf pistonSR22T, Bonanza, Mooney
+11%
-7%
Light jetCJ4, Phenom 300, M2
+6%
-5%
Approximate using ~10% perf loss / 1,000 ft DA for normally aspirated, scaled by powerplant type. Verify with your aircraft's POH for accurate numbers — especially above 5,000 ft DA where these rules of thumb diverge.
// Cloud layers · clear · no layers reported
// Sun & Moon · times in Z · bar = local day (UTC-5)
09:55ZSUNRISE
17:16ZSOLAR NOON
00:37ZSUNSET
01:08ZCIVIL END
CURRENT13:10Z
DAYLIGHT REMAINING11h 27m
VFR NIGHT BEGINS01:08Z (11h 58m)
DAY LENGTH14h 41m
Waning Crescent
ILLUMINATION11%
MOONRISE07:17Z
MOONSET21:59Z
FULL MOON IN18 days
// Nearest reporting stations · 5 shown · 60 NM radius
KHWY
VFR
Warrenton Fauquier Airport · Midland
- WIND
- 330° / 8 kt
- VIS
- 10+ SM
- CEILING
- CLR
- DIST
- 12 NM SW
- AGE
- 15m ago
KIAD
VFR
Washington Dulles International Airport · Dulles
- WIND
- 320° / 5 kt
- VIS
- 10+ SM
- CEILING
- BKN250
- DIST
- 14 NM N
- AGE
- 18m ago
KDAA
VFR
Davison Army Air Field · Fort Belvoir
- WIND
- 320° / 7 kt
- VIS
- 10+ SM
- CEILING
- FEW100
- DIST
- 16 NM E
- AGE
- 15m ago
KNYG
—
Quantico Marine Corps Airfield / Turner Field · Quantico
- WIND
- 350° / 6 kt
- VIS
- —
- CEILING
- FEW090
- DIST
- 16 NM SE
- AGE
- 14m ago
KRMN
VFR
Stafford Regional Airport · Fredericksburg
- WIND
- 350° / 5 kt
- VIS
- 10+ SM
- CEILING
- SCT080
- DIST
- 20 NM S
- AGE
- 15m ago
// Area map · 60 NM radius · CartoDB Dark Matter + aeronautical overlay
© OpenStreetMap · CartoDB · OpenAIP
//
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