// Station · 1h 35m ago · STALE

KNHK

Patuxent River Naval Air Station (Trapnell Field)

CAT VFR

WIND 310° / 7 kt

VIS 10+ SM

CEILING BKN at 11,000 ft

T/Td 25.6°C / 22.8°C

ALTIM 29.93 inHg

ELEV 39 FT

38.2860°N / 76.4118°W

LOCATION · Patuxent River, US

WIND

310°7 kt

KNHK · 39 FT

// Current + 24h forecast · METAR loaded · TAF loading…

METRIC

NOW · 12Z

+6H

+12H

+18H

WIND

310°/7

VIS

10+ SM

CEILING

BKN110

LAYERS

FEW075 BKN110 BKN200

T / Td

26 / 23

ALTIM

29.93"

// Interpretation

VFR — ceiling 11,000 ft. Light winds at 310°/7 kt, visibility better than 10 statute miles, a few at 7,500 ft, broken at 11,000 ft, and broken at 20,000 ft. Would shift to MVFR if the ceiling drops to 3,000 ft or visibility below 5 SM.

Loading TAF forecast narrative…

SOURCES · NOAA Aviation Weather Center METAR (TAF loading…)

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// Raw observation METAR string + decoded

METAR KNHK 111252Z 31007KT 10SM FEW075 BKN110 BKN200 26/23 A2993 RMK AO2 SLP135 T02560228 $

KNHK · day 11 at 12:52 UTC · wind from 310° at 7 kt · visibility 10+ SM · a few clouds at 7,500 ft · broken layer at 11,000 ft · broken layer at 20,000 ft · temp 26°C / dewpoint 23°C · altimeter 29.93" Hg · automated station w/ precipitation discriminator · sea-level pressure 1013.5 mb

// Runway analysis · computed from current METAR wind

Wind 310° @ 7 kt

3 USABLE · 3 AVOID · 2 CAUTION

WIND

310°7 kt

HEADWIND CAUTION · HIGH XW AVOID · TAILWIND

HEADWIND ENDS 3 usable

32★ HDG 320° H7 kt X1 kt LEFT PRIMARY · 9,732'

02 HDG 020° H2 kt X7 kt LEFT ⚠ HIGH XW · 100%

24 HDG 240° H2 kt X7 kt RIGHT ⚠ HIGH XW · 100%

TAILWIND ENDS · AVOID 3 ends

20 HDG 200° T2 kt X7 kt RIGHT —

06 HDG 060° T2 kt X7 kt LEFT —

14 HDG 140° T7 kt X1 kt RIGHT —

Pattern altitude: 1,039 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 +11°C

1,300FT

+1,261 FT ABOVE FIELD ELEV

// DA · LAST 24 HOURS ↘ -400 FT

24h AGO18h12h6hNOW

FIELD ELEV39 FT OAT+26°C ISA DELTA+11°C PRESSURE ALT27 FT

// Performance equivalent Operating here right now feels like operating at KVVS (Joseph A. Hardy Connellsville Airport, Connellsville, elev 1,267 ft) on a standard ISA day.

// Aircraft performance impact MINOR

TAKEOFF ROLL CLIMB RATE

Single-engine propC172, PA-28, Cherokee

+13%

-9%

Turbo / high-perf pistonSR22T, Bonanza, Mooney

+9%

-6%

Light jetCJ4, Phenom 300, M2

+5%

-4%

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 · 3 reported · highest to lowest

// Reported layers (highest → lowest)

BKN200

Broken · base 20,000 ft AGL · ~5–7 oktas

BKN110

Broken · base 11,000 ft AGL · ~5–7 oktas

FEW075

Few · base 7,500 ft AGL · ~1–2 oktas

// Computed

CEILING11,000 ft AGL HIGHEST LAYER20,000 ft TOTAL COVERAGE~91% (overcast) FREEZING LEVEL12,968 ft VFR MARGIN+8,000 ft

// Sun & Moon · times in Z · bar = local day (UTC-5)

09:52ZSUNRISE

17:12ZSOLAR NOON

00:31ZSUNSET

01:02ZCIVIL END

CURRENT14:27Z DAYLIGHT REMAINING10h 04m VFR NIGHT BEGINS01:02Z (10h 35m) DAY LENGTH14h 39m

Waning Crescent

ILLUMINATION11% MOONRISE07:17Z MOONSET21:56Z FULL MOON IN18 days

// Nearest reporting stations · 5 shown · 60 NM radius

K2W6

—

St. Mary's County Regional Airport · California

WIND: VRB / 3 kt
VIS: —
CEILING: CLR
DIST: 7 NM W
AGE: 12m ago

KNUI

VFR

Naval Outlying Landing Field Webster · St Inigoes

WIND: VRB / 3 kt
VIS: 10+ SM
CEILING: BKN110
DIST: 9 NM S
AGE: 34m ago

KCGE

VFR

Cambridge Dorchester Airport · Cambridge

WIND: 360° / 5 kt
VIS: 10+ SM
CEILING: CLR
DIST: 24 NM NE
AGE: 12m ago

KXSA

VFR

Tappahannock-Essex County Airport · Tappahannock

WIND: 320° / 4 kt
VIS: 10+ SM
CEILING: SCT022
DIST: 34 NM SW
AGE: 12m ago

KESN

VFR

Easton Airport / Newnam Field · Easton

WIND: 020° / 5 kt
VIS: 10+ SM
CEILING: CLR
DIST: 35 NM NE
AGE: 42m ago

// Area map · 60 NM radius · CartoDB Dark Matter + aeronautical overlay

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