KNHK/NHK METAR & TAF Patuxent River Naval Air Station (Trapnell Field)

Patuxent River, MarylandElevation 39 ftMedium airport

CURRENT STATUS

VFR48 min old

No ceiling, visibility 10 SM.

FLIGHT CATEGORY

VFR

ceiling & visibility

WIND

290@6

steady

VISIBILITY

10 SM

16.1 km

CEILING

None

no BKN/OVC layer

DENSITY ALT

-897 ft

-936 ft vs field

CURRENT METAR

Decoded observation

Observed 1252Z (8:52 AM local) · 48 min old

KNHK is currently VFR. Winds are from the west at 6 knots. Visibility is 10 statute miles. There is no ceiling.

WIND

290° at 6 kt

Steady.

VISIBILITY

10 statute miles

16.1 km, good.

CEILING & SKY

CLR

FEW and SCT layers are not ceilings.

TEMP / DEWPOINT

11°C / 10°C

52°F / 50°F. 1°C spread.

ALTIMETER

30.39 inHg

1029.1 hPa, above standard.

WEATHER & HAZARDS

No significant hazards

No precipitation or obscuration reported.

Codes in this report: CLR RMK AO2

Hover or tap any group for a plain-English explanation.

REMARKS: DECODED

AO2

automated station with a precipitation discriminator (can tell rain from snow)

SLP290

sea-level pressure 1029.0 hPa

T01110100

precise temperature 11.1°C, dew point 10.0°C

$

station needs maintenance

TERMINAL AERODROME FORECAST

TAF timeline

Issued 0700Z (3:00 AM local) · valid to 0700Z (3:00 AM local)

KNHK forecast starts VFR at 07Z. Conditions are roughly steady over the period.

Maximum temperature 21°C expected at 1900Z on day 26.
Minimum temperature 7°C expected at 1000Z on day 26.

VFR

0700Z3:00 AM1148Z7:48 AM1636Z12:36 PM2124Z5:24 PM0212Z10:12 PM0700Z3:00 AM

Codes in this report: 9999 FEW SCT

Tap any group to decode it.

FAA: no delays reported at NHK.

Source: FAA System Operations (ASWS). Operational status only; verify with official FAA sources and NOTAMs.

SUGGESTED RISK · TRAINING USE

Suggested risk level: Low

›No significant weather concerns in the current report.

A suggested risk level for training and situational awareness only, not a go/no-go authority. Verify with official sources and apply your personal minimums.

FORECAST & PILOT NOTES · SUPPLEMENTAL

Extended forecast and pilot notes

Current aviation conditions show flight category VFR, wind from 290° at 6 kt, visibility 10 SM, ceiling none. Forecast suggests today patchy fog then sunny, high near 68F, low near 51F, 0% chance of precipitation. Key risks: no significant hazards are highlighted right now, but always confirm against an official briefing.

Day	Conditions	Temp F	Wind	Gusts	Precip
Today	Patchy Fog then Sunny	68/51	W 4 kt	–	0%
Tuesday	Sunny	66/50	N 9 kt	–	0%
Wednesday	Mostly Sunny	66/53	NE 6 kt	–	0%
Thursday	Mostly Sunny	68/53	SE 3 kt	–	0%
Friday	Sunny	72/55	SW 3 kt	–	0%
Saturday	Partly Sunny	68/55	N 5 kt	–	5%
Sunday	Slight Chance Rain Showers	68/57	SE 6 kt	–	39%

Source: National Weather Service (office LWX). Forecast issued 1339Z.

Radar

Radar data: NOAA/NWS MRMS composite reflectivity. For situational awareness only, not a substitute for an official weather briefing.

RUNWAYS & WIND

3 runways · crosswind ranking

ON-FIELD METAR

READING THE BARB · SWIPE FOR MORE →

Calm

5 kt

10 kt

15 kt

20 kt

25 kt

30 kt

35 kt

40 kt

45 kt

50 kt

65 kt

75 kt

100 kt

105 kt

Half feather = 5 kt, full = 10 kt, filled pennant = 50 kt; add them up. The staff points the direction the wind blows from.

WIND USED

290° at 6 kt

Components computed from the current on-field METAR wind.

RECOMMENDED

RWY 326 kt headwind · 2 kt crosswind

RUNWAYS BY WIND · best end

32

HEAD

6 kt

CROSS

2 kt L

BEST

24

HEAD

3 kt

CROSS

5 kt R

OK

02

HEAD

1 kt

CROSS

6 kt L

OK

20

HEAD

1 kt tail

CROSS

6 kt R

OK

06

HEAD

3 kt tail

CROSS

5 kt L

OK

14

HEAD

6 kt tail

CROSS

2 kt R

OK

Components are estimates from the current METAR wind and runway heading. Verify with the Chart Supplement and NOTAMs.

RUNWAYS

Runway detail & declared distances

3 runways · longest 11,799 ft

02/20

Dimensions

5,021 x 75 ft

Surface

Asphalt (good)

RWY 028°T

RWY 20188°T

06/24

Dimensions

11,799 x 200 ft

Surface

Asphalt (good)

Edge lights

HIGH

RWY 0649°T

ILSILS/DME

Approach lightsALSF1

RWY 24229°T

14/32

Dimensions

9,732 x 200 ft

Surface

Asphalt (good)

Edge lights

HIGH

RWY 14126°T

RWY 32306°T

Runway data from the FAA NASR dataset (effective 2026-06-11). Verify with the current Chart Supplement and NOTAMs.

FIELD CONDITIONS

Performance & density altitude

Density altitude

-897 ft

Pressure altitude

-431 ft

Field elevation

39 ft MSL

Temperature

11°C (52°F)

Dewpoint

10°C (50°F)

Altimeter

30.39 inHg

Density altitude estimates how the aircraft performs versus standard atmosphere. Higher density altitude reduces climb performance and increases takeoff distance.

DAYLIGHT & NIGHT

Sun & logging windows

Sunset

2213Z 6:13 PM

Sunrise

1126Z 7:26 AM

Loggable night

2240Z (6:40 PM local) → 1059Z (6:59 AM local)

end of evening to start of morning civil twilight

Position lights required

2213Z (6:13 PM local) → 1126Z (7:26 AM local)

sunset to sunrise (91.209)

Night passenger currency

2313Z (7:13 PM local) → 1026Z (6:26 AM local)

1 hr after sunset to 1 hr before sunrise (61.57(b))

FAA definitions, shown in Zulu with airport-local time. Verify for your operation.

AIRPORT INFORMATION

Facility & services

Patuxent River Naval Air Station (Trapnell Field) is in Patuxent River, Maryland. Field elevation 39 ft MSL. Airport facts are drawn from OurAirports and the FAA NASR dataset.

OPERATIONS & CONTACT

OwnershipNavy owned

UsePrivate use

TypeMedium airport

ManagerCOMMANDING OFFICER

Manager phone301-863-3339

AttendedDaily, 1200–0400Z++.

CHARTS & AIRSPACE

ICAO / IATAKNHK / NHK

SectionalWASHINGTON

Center (ARTCC)WASHINGTON

Flight service (AFSS)LEESBURG

RegionMaryland

CountryUnited States

Coordinates38.2860, -76.4118

Distance from city0 NM N

SERVICES & LIGHTING

Control towerTowered

Field lightingSee remarks

BeaconSunset to sunrise · Split white-green (military)

FREQUENCIES

Communications

120.05

APP/DEP

A/D

27.62

ATIS

135.2

CLNC DEL

CLD

120.6

GND

30.255

BASE OPS

OPS

35.62

PMSV METRO

PMSV

117.6

LEESBURG RDO

RDO

123.7

TWR

Not all tower/ground/approach frequencies are in our datasets. Verify with the FAA Chart Supplement.

AIRCRAFT ACTIVITY

KNHK traffic patterns

2026-07-15 to 2026-10-23, 24 days observed · data 2026-10-23

Medium confidence

TRAFFIC VOLUME (30-DAY)

AVG LANDINGS/DAY

9.5

AVG OPS/DAY

19.4

Operations trend (11 days)

Busiest day: Tue · Busiest month: Oct

FLEET MIX

Unknown 48%Helicopter 32%Jet 8%Turboprop 7%Airliner 3%Piston single 1%

Fleet composition unclear from available data.

TOP AIRCRAFT TYPES

›T38 (Unknown) · ~13 landings/mo

›H60 (Helicopter) · ~11 landings/mo

›B06 (Helicopter) · ~8 landings/mo

›EC45 (Helicopter) · ~7 landings/mo

›E2 (Unknown) · ~7 landings/mo

LIKELY BASED AIRCRAFT

Low-confidence estimate

Aircraft likely based near this airport (estimate), mostly aircraft of unknown type.

›T38 (Unknown)

›H60 (Helicopter)

›TEX2 (Unknown)

›SW4 (Unknown)

›BE20 (Turboprop)

This is an estimate based on repeated flight patterns, not registration data. Do not rely on it to identify specific aircraft or owners.

Data limitations (4)

›ADS-B coverage is incomplete; counts are an observed lower bound, not official totals.

›Some aircraft do not transmit usable ADS-B and are not counted.

›Aircraft types and based estimates are inferred and may be wrong.

›This is not official ATC, FAA, or airport data.

NEARBY AIRPORTS

Weather reference stations

Current flight category at nearby reporting stations.

KCGE Cambridge Dorchester Airport

24 NM NE

VFR

KESN Easton Airport / Newnam Field

35 NM NE

VFR

KADW Joint Base Andrews

38 NM NW

VFR

KSBY Salisbury Ocean City Wicomico Regional Airport

43 NM E

VFR

KNYG Quantico Marine Corps Airfield / Turner Field

44 NM W

VFR

KDAA Davison Army Air Field

44 NM NW

VFR

AIRPORT REMARKS

Operational remarks

›OLS.

›CSTMS/AG/IMG: LTD TO ACFT ON OFFICIAL BUSINESS AT PAX RIV WITH 72 HR PN. CTC AODO AT DSN 342-3836, C301-342-3836.

›MISC: WX FCST SVC AVBL 0900-0100Z++ MON-FRI. FOR FCST SVC ALL OT CTC FWC-N AT DSN 565-4555 OR C888-745-6899. WX OBSN AND PMSV MTR AVBL 1100-0400Z++ MON-FRI AND 1200-2300Z++ SAT-SUN.

›CLSD HOLIDAYS.

›TRAN ALERT: AVBL 1200-23000Z++ MON-FRI EXC HOL.

›OIL: O-128-133-148-156 (MIL).

›FLUID: SP LHOX LOX.

›FUEL: 100LL, A, J5.

›MISC: CLASS D AVAIL EXCLUDING THAT AIRSPACE WITHIN RESTRICTED AREAS R-4005 AND R-4007 WHEN ACTIVE. SEE FLIP AP/1 SUPPLEMENTARY ARPT REMARKS.

›MISC: NS NORFOLK, CHAMBERS FLD COORD ALL FLT PLANNING SVC. FLT PLANS SHOULD BE EMAILED TO W_CNI_NRFK_NSNORFOLK_N32_ATC_USERS@NAVY.MIL OR FAX TO DSN 565-9680, C757-445-9680. TO CONFIRM RECEIPT OF FLT PLANS CALL NS NORFOLK, CHAMBERS FLD FLT PLANNING SUPERVISOR AT DSN 232-3419/3429, C757-322-3419/3429.

›SERVICE: NO BASE TRANSPORTATION AVBL.

›CAUTION: STOPPING IN RSTD AREA ON TWY A, W TWY IS PROH. PORTIONS OF RWY, TWY AND ACFT RAMPS NOT VIS FR TWR. FIRST 1630 FT. RWY 32 MAY BE CLSD DALGT HR MON-SAT DUR VFR. BUILDINGS AND EQUIPMENT ARE LOCATED NEAR THE APPROACH END OF RWY 32. DEER AND BIRD HAZ.

›JASU: (GTC-85) (NCPP-105) (NC-8) (NC-10).

›NS ABTMT: MIL ACFT MAINT AT LEAST 1500 FT BTN 3 NM AND 10 NM FR 210 DEG CW TO 240 DEG. NO PRACTICE APCH 0300Z++ TO 1200Z++ MON-FRI, SAT BEFORE 1500Z++, SUN BEFORE 1700Z++. TRAN ACFT PRACTICE APCH NOT TO INTERFERE BASIS.

›MISC: FOR INFO REGARDING CIVIL AIR LANDING PERMITS (CALPS) CTC AFM AT 301-342-8923 OR EMAIL NASPATUXENTRIVERCALPS@US.NAVY.MIL.

›RSTD: PPR-NO NOTAM TRML FAC AVBL. PPR REQUESTS SHOULD BE EMAILED TO PAXPPRS@US.NAVY.MIL TO CONFIRM RECEIPT OF PPRS CALL DSN 342-8923, C301-342-8923. ACFT MUST MAKE PRIOR ARNG AND RCV PPR FR HOST SQUADRON, OR NAS AIR OPERATONS. LTD RAMP SPACE, AND LTD TRAN SVC AVBL EXPECT DELAYS. TWY ALL EXP DLY DUE TO ACFT WT LIMITATIONS.

›TFC PAT: VFR INITIAL AT 4 DME (RWY 32 AT 3 DME) 2000 FT, BREAK 1500 FT, DOWNWIND 1000 FT. REDUCED RWY SEPARATION STD IN EFF FOR LCL BASED USN/USMC ACFT.

›FOR CD WHEN NHK ATCT/APCH ARE CLSD CTC POTOMAC APCH AT 866-640-4124.

›OLS.

›REMARKS: OPR 1200-0400Z++ MON-FRI,1300-2300Z++ SAT-SUN, CLSD HOL. SEE FLIP AP/1 SUPPLEMENTARY ARPT RMK.

›AVBL ONLY DURING HRS OF OPERATION.

›HOOK E28(B) (2180 FT).

›HOOK E28(B) (1280 FT).

›HOOK E28(B) (1499 FT).

›HOOK E28(B) (3050 FT).

OFFICIAL LINKS & SOURCES

↗Official METAR on AviationWeather.gov

↗Search NOTAMs (official FAA NOTAM Search)

↗Wikipedia

↗KNHK on OurAirports

FREQUENTLY ASKED

Does KNHK have a METAR?

Yes. KNHK has a current METAR observation, decoded into plain English on this page.

Does KNHK have a TAF?

Yes, a TAF is issued for KNHK; the decoded forecast timeline is shown above.

What is the field elevation at KNHK?

KNHK sits at 39 ft MSL, which factors into the density-altitude estimate on this page.

Is this an official preflight weather briefing for KNHK?

No. wxdecoder.com is for education and situational awareness only. It is not an official weather briefing or a substitute for official sources, NOTAM review, and pilot judgment.