Patuxent River Naval Air Station (Trapnell Field)

KNHK / NHK

Patuxent River, US

Current TAF Forecast

Raw TAF:
TAF KNHK 2623/2723 16008G13KT 9999 FEW050 SCT120 QNH2980INS BECMG 2700/2702 18008KT 9999 VCTS SCT035 BKN060CB BKN120 QNH2983INS TEMPO 2702/2708 VRB15G25KT 1600 TSRA BR BKN030CB OVC060 FM270800 VRB06KT 9999 SCT040 BKN120 QNH2980INS BECMG 2716/2717 14008KT 9999 VCTS BKN010CB BKN080 BKN130 QNH2980INS TEMPO 2718/2721 VRB15G25KT 1600 TSRA BKN010CB OVC080 AUTOMATED SENSOR METWATCH 2623 TIL 2707 TX27/2718Z TN22/2709Z FN00319

Detailed TAF Table

Parameter
Mon
05:00Z
+-1h
Mon
06:00Z
+0h
Mon
07:00Z
+1h
Mon
08:00Z
+2h
Mon
09:00Z
+3h
Mon
10:00Z
+4h
Mon
11:00Z
+5h
Mon
12:00Z
+6h
Mon
13:00Z
+7h
Mon
14:00Z
+8h
Mon
15:00Z
+9h
Mon
16:00Z
+10h
Mon
17:00Z
+11h
Mon
18:00Z
+12h
Mon
19:00Z
+13h
Mon
20:00Z
+14h
Mon
21:00Z
+15h
Mon
22:00Z
+16h
Mon
23:00Z
+17h
Tue
00:00Z
+18h
Tue
01:00Z
+19h
Tue
02:00Z
+20h
Tue
03:00Z
+21h
Tue
04:00Z
+22h
Tue
05:00Z
+23h
Tue
06:00Z
+24h
Tue
07:00Z
+25h
Tue
08:00Z
+26h
Tue
09:00Z
+27h
Tue
10:00Z
+28h
Tue
11:00Z
+29h
Tue
12:00Z
+30h
Tue
13:00Z
+31h
Tue
14:00Z
+32h
Tue
15:00Z
+33h
Tue
16:00Z
+34h
Tue
17:00Z
+35h
Tue
18:00Z
+36h
Tue
19:00Z
+37h
Tue
20:00Z
+38h
Tue
21:00Z
+39h
Tue
22:00Z
+40h
Tue
23:00Z
+41h
Wed
00:00Z
+42h
Wed
01:00Z
+43h
Wed
02:00Z
+44h
Wed
03:00Z
+45h
Wind Dir
160°
S
160°
S
160°
S
VRB
VRB
VRB
VRB
VRB
VRB
160°
S
160°
S
140°
SE
140°
SE
VRB
VRB
VRB
140°
SE
140°
SE
140°
SE
140°
SE
140°
SE
140°
SE
140°
SE
140°
SE
140°
SE
140°
SE
140°
SE
140°
SE
140°
SE
140°
SE
140°
SE
140°
SE
140°
SE
140°
SE
140°
SE
140°
SE
140°
SE
140°
SE
140°
SE
140°
SE
140°
SE
140°
SE
140°
SE
140°
SE
140°
SE
140°
SE
140°
SE
Wind Speed
8 kt
G13 kt
8 kt
G13 kt
8 kt
G13 kt
6 kt
G13 kt
6 kt
G13 kt
6 kt
G13 kt
6 kt
G13 kt
6 kt
G13 kt
6 kt
G13 kt
8 kt
G13 kt
8 kt
G13 kt
8 kt
G13 kt
8 kt
G13 kt
15 kt
G25 kt
15 kt
G25 kt
15 kt
G25 kt
8 kt
G13 kt
8 kt
G13 kt
8 kt
G13 kt
8 kt
G13 kt
8 kt
G13 kt
8 kt
G13 kt
8 kt
G13 kt
8 kt
G13 kt
8 kt
G13 kt
8 kt
G13 kt
8 kt
G13 kt
8 kt
G13 kt
8 kt
G13 kt
8 kt
G13 kt
8 kt
G13 kt
8 kt
G13 kt
8 kt
G13 kt
8 kt
G13 kt
8 kt
G13 kt
8 kt
G13 kt
8 kt
G13 kt
8 kt
G13 kt
8 kt
G13 kt
8 kt
G13 kt
8 kt
G13 kt
8 kt
G13 kt
8 kt
G13 kt
8 kt
G13 kt
8 kt
G13 kt
8 kt
G13 kt
8 kt
G13 kt
Visibility
10+ km
10+ km
10+ km
10+ km
10+ km
10+ km
10+ km
10+ km
10+ km
10+ km
10+ km
10+ km
10+ km
2.707 km
2.707 km
2.707 km
10+ km
10+ km
10+ km
10+ km
10+ km
10+ km
10+ km
10+ km
10+ km
10+ km
10+ km
10+ km
10+ km
10+ km
10+ km
10+ km
10+ km
10+ km
10+ km
10+ km
10+ km
10+ km
10+ km
10+ km
10+ km
10+ km
10+ km
10+ km
10+ km
10+ km
10+ km
Weather
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
Thunderstorm Rain
TSRA
Thunderstorm Rain
TSRA
Thunderstorm Rain
TSRA
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
Clouds
FEW050
SCT120
FEW050
SCT120
FEW050
SCT120
SCT040
BKN120
SCT040
BKN120
SCT040
BKN120
SCT040
BKN120
SCT040
BKN120
SCT040
BKN120
FEW050
SCT120
FEW050
SCT120
BKN010CB
BKN080
BKN010CB
BKN080
BKN010CB
OVC080
BKN010CB
OVC080
BKN010CB
OVC080
BKN010CB
BKN080
BKN010CB
BKN080
BKN010CB
BKN080
BKN010CB
BKN080
BKN010CB
BKN080
BKN010CB
BKN080
BKN010CB
BKN080
BKN010CB
BKN080
BKN010CB
BKN080
BKN010CB
BKN080
BKN010CB
BKN080
BKN010CB
BKN080
BKN010CB
BKN080
BKN010CB
BKN080
BKN010CB
BKN080
BKN010CB
BKN080
BKN010CB
BKN080
BKN010CB
BKN080
BKN010CB
BKN080
BKN010CB
BKN080
BKN010CB
BKN080
BKN010CB
BKN080
BKN010CB
BKN080
BKN010CB
BKN080
BKN010CB
BKN080
BKN010CB
BKN080
BKN010CB
BKN080
BKN010CB
BKN080
BKN010CB
BKN080
BKN010CB
BKN080
BKN010CB
BKN080
Ceiling
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
12,000 ft
AGL
12,000 ft
AGL
12,000 ft
AGL
12,000 ft
AGL
12,000 ft
AGL
12,000 ft
AGL
🌤️ Unlimited
🌤️ Unlimited
1,000 ft
AGL
1,000 ft
AGL
1,000 ft
AGL
1,000 ft
AGL
1,000 ft
AGL
1,000 ft
AGL
1,000 ft
AGL
1,000 ft
AGL
1,000 ft
AGL
1,000 ft
AGL
1,000 ft
AGL
1,000 ft
AGL
1,000 ft
AGL
1,000 ft
AGL
1,000 ft
AGL
1,000 ft
AGL
1,000 ft
AGL
1,000 ft
AGL
1,000 ft
AGL
1,000 ft
AGL
1,000 ft
AGL
1,000 ft
AGL
1,000 ft
AGL
1,000 ft
AGL
1,000 ft
AGL
1,000 ft
AGL
1,000 ft
AGL
1,000 ft
AGL
1,000 ft
AGL
1,000 ft
AGL
1,000 ft
AGL
1,000 ft
AGL
1,000 ft
AGL
1,000 ft
AGL
1,000 ft
AGL
1,000 ft
AGL
Flight Rules VFR VFR VFR VFR VFR VFR VFR VFR VFR VFR VFR MVFR MVFR IFR IFR IFR MVFR MVFR MVFR MVFR MVFR MVFR MVFR MVFR MVFR MVFR MVFR MVFR MVFR MVFR MVFR MVFR MVFR MVFR MVFR MVFR MVFR MVFR MVFR MVFR MVFR MVFR MVFR MVFR MVFR MVFR MVFR
Day/Night
☀️
Day
🌅 04:58Z
☀️
Day
🌅 04:58Z
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
🌇 19:01Z
☀️
Day
🌇 19:01Z
☀️
Day
🌇 19:01Z
🌙
Night
🌇 19:01Z
🌙
Night
🌇 19:01Z
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌅 04:59Z
🌙
Night
🌅 04:59Z
🌙
Night
🌅 04:59Z
☀️
Day
🌅 04:59Z
☀️
Day
🌅 04:59Z
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
🌇 19:00Z
☀️
Day
🌇 19:00Z
☀️
Day
🌇 19:00Z
🌙
Night
🌇 19:00Z
🌙
Night
🌇 19:00Z
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌅 04:59Z
🌙
Night
🌅 04:59Z
Flight Rules
VFR: Visual Flight Rules
MVFR: Marginal VFR
IFR: Instrument Flight Rules
LIFR: Low IFR
Ceiling Colors
Red: < 500ft
Amber: 500-1000ft
Blue: 1000-3000ft
Green: > 3000ft
⛈️ TCU: Towering Cumulus
🌩️ CB: Cumulonimbus
+Nh: Hours from now • %: Probability of occurrence • AGL: Above Ground Level

Forecast Periods

BASE
VFR
Wind
160° at 8 kt
Gusts: 13 kt
Visibility
10+ km
Clouds
FEW050 SCT120
📖 Plain English Explanation:

This is the base forecast condition. Winds from the South-Southeast (160°) at 8 kt. Gusts up to 13 kt are expected. Visibility will be excellent at 10+ km. Few clouds at 5000 feet, Scattered clouds at 12000 feet. Conditions will be suitable for Visual Flight Rules (VFR) operations.

BECMG 00:00Z - 02:00Z
MVFR
Wind
180° at 8 kt
Visibility
10+ km
Clouds
SCT035 BKN060CB BKN120
📖 Plain English Explanation:

Conditions will gradually change to become: Winds from the South (180°) at 8 kt. Visibility will be excellent at 10+ km. Scattered clouds at 3500 feet, Broken clouds at 6000 feet, Broken clouds at 12000 feet. Marginal VFR conditions - some restrictions for visual flying.

TEMPO 02:00Z - 08:00Z
LIFR
Wind
VRB° at 15 kt
Gusts: 25 kt
Visibility
1.6 km
Weather
Thunderstorm Rain, Mist
Clouds
BKN030CB OVC060
📖 Plain English Explanation:

Temporary conditions (lasting less than an hour at a time) may include: Winds will be variable in direction at 15 kt. Gusts up to 25 kt are expected. Visibility will be moderate at 1.6 km. Weather conditions: Thunderstorm Rain, Mist. Broken clouds at 3000 feet, Overcast skies at 6000 feet. Low IFR conditions - challenging even for instrument operations.

FM270800 08:00Z - 14:00Z
VFR
Wind
VRB° at 6 kt
Visibility
10+ km
Clouds
SCT040 BKN120
📖 Plain English Explanation:

Winds will be variable in direction at 6 kt. Visibility will be excellent at 10+ km. Scattered clouds at 4000 feet, Broken clouds at 12000 feet. Conditions will be suitable for Visual Flight Rules (VFR) operations.

BECMG 16:00Z - 17:00Z
MVFR
Wind
140° at 8 kt
Visibility
10+ km
Clouds
BKN010CB BKN080 BKN130
📖 Plain English Explanation:

Conditions will gradually change to become: Winds from the Southeast (140°) at 8 kt. Visibility will be excellent at 10+ km. Broken clouds at 1000 feet, Broken clouds at 8000 feet, Broken clouds at 13000 feet. Marginal VFR conditions - some restrictions for visual flying.

TEMPO 18:00Z - 21:00Z
IFR
Wind
VRB° at 15 kt
Gusts: 25 kt
Visibility
2.707 km
Weather
Thunderstorm Rain
Clouds
BKN010CB OVC080
📖 Plain English Explanation:

Temporary conditions (lasting less than an hour at a time) may include: Winds will be variable in direction at 15 kt. Gusts up to 25 kt are expected. Visibility will be moderate at 2.707 km. Weather conditions: Thunderstorm Rain. Broken clouds at 1000 feet, Overcast skies at 8000 feet. Instrument Flight Rules (IFR) conditions - instrument flying required.

📚 Understanding TAF Forecasts

Terminal Aerodrome Forecast (TAF) provides detailed weather forecasts specifically for aviation operations. Our system translates complex meteorological codes into plain English to help pilots of all experience levels understand forecasted conditions.

What TAF Includes:

  • • Wind direction, speed, and gusts
  • • Visibility in statute miles or kilometers
  • • Weather phenomena (rain, snow, fog, thunderstorms)
  • • Cloud coverage types and altitudes
  • • Forecast changes with timing
  • • Flight rules categories (VFR/IFR)

Change Indicators Explained:

  • • BASE - Main forecast conditions
  • • FM - Permanent change from specific time
  • • BECMG - Gradual change over 2-4 hours
  • • TEMPO - Temporary changes (less than 1 hour)
  • • PROB30/40 - 30% or 40% probability

🛩️ Flight Rules Categories

VFR

Visual Flight Rules

  • • Ceiling ≥ 3000 ft
  • • Visibility ≥ 5 miles
  • • Good for visual flying

MVFR

Marginal VFR

  • • Ceiling 1000-3000 ft
  • • Visibility 3-5 miles
  • • Caution for VFR

IFR

Instrument Flight Rules

  • • Ceiling 500-1000 ft
  • • Visibility 1-3 miles
  • • Instruments required

LIFR

Low IFR

  • • Ceiling < 500 ft
  • • Visibility < 1 mile
  • • Challenging conditions

💡 TAF Reading Tips

For Student Pilots:

  • • Focus on the plain English explanations above
  • • Pay attention to flight rules categories
  • • Look for wind direction relative to runway headings
  • • Check for temporary conditions (TEMPO)

For Experienced Pilots:

  • • Cross-reference with raw TAF for precise timing
  • • Consider probability forecasts for alternate planning
  • • Monitor BECMG periods for gradual changes
  • • Always check current METAR vs TAF forecast

Important: TAF forecasts should always be supplemented with current METAR observations, PIREPs, and other weather information for complete situational awareness. Weather can change rapidly, and forecasts have inherent limitations.