Williams Field Skiway

NZWD

McMurdo Station, AQ

Current TAF Forecast

Raw TAF:
TAF NZWD 172056Z 1721/1821 17012KT 4800 -SN BR FEW030 OVC040 620406 QNH2897INS GRID34012KT TEMPO 1721/1801 3200 -SN BR BKN030 620307 BECMG 1723/1801 07012KT 9999 FEW030 BKN040 620406 QNH2895INS GRID24012KT

Detailed TAF Table

Parameter
Sun
01:00Z
+-1h
Sun
02:00Z
+0h
Sun
03:00Z
+1h
Sun
04:00Z
+2h
Sun
05:00Z
+3h
Sun
06:00Z
+4h
Sun
07:00Z
+5h
Sun
08:00Z
+6h
Sun
09:00Z
+7h
Sun
10:00Z
+8h
Sun
11:00Z
+9h
Sun
12:00Z
+10h
Sun
13:00Z
+11h
Sun
14:00Z
+12h
Sun
15:00Z
+13h
Sun
16:00Z
+14h
Sun
17:00Z
+15h
Sun
18:00Z
+16h
Sun
19:00Z
+17h
Wind Dir
170°
S
170°
S
170°
S
170°
S
170°
S
170°
S
170°
S
170°
S
170°
S
170°
S
170°
S
170°
S
170°
S
170°
S
170°
S
170°
S
170°
S
170°
S
170°
S
Wind Speed
12kt
12kt
12kt
12kt
12kt
12kt
12kt
12kt
12kt
12kt
12kt
12kt
12kt
12kt
12kt
12kt
12kt
12kt
12kt
Visibility
4.8 km
4.8 km
4.8 km
4.8 km
4.8 km
4.8 km
4.8 km
4.8 km
4.8 km
4.8 km
4.8 km
4.8 km
4.8 km
4.8 km
4.8 km
4.8 km
4.8 km
4.8 km
4.8 km
Weather
Light Snow, Mist, GRID34012KT
-SN BR GRID34012KT
Light Snow, Mist, GRID34012KT
-SN BR GRID34012KT
Light Snow, Mist, GRID34012KT
-SN BR GRID34012KT
Light Snow, Mist, GRID34012KT
-SN BR GRID34012KT
Light Snow, Mist, GRID34012KT
-SN BR GRID34012KT
Light Snow, Mist, GRID34012KT
-SN BR GRID34012KT
Light Snow, Mist, GRID34012KT
-SN BR GRID34012KT
Light Snow, Mist, GRID34012KT
-SN BR GRID34012KT
Light Snow, Mist, GRID34012KT
-SN BR GRID34012KT
Light Snow, Mist, GRID34012KT
-SN BR GRID34012KT
Light Snow, Mist, GRID34012KT
-SN BR GRID34012KT
Light Snow, Mist, GRID34012KT
-SN BR GRID34012KT
Light Snow, Mist, GRID34012KT
-SN BR GRID34012KT
Light Snow, Mist, GRID34012KT
-SN BR GRID34012KT
Light Snow, Mist, GRID34012KT
-SN BR GRID34012KT
Light Snow, Mist, GRID34012KT
-SN BR GRID34012KT
Light Snow, Mist, GRID34012KT
-SN BR GRID34012KT
Light Snow, Mist, GRID34012KT
-SN BR GRID34012KT
Light Snow, Mist, GRID34012KT
-SN BR GRID34012KT
Clouds
FEW030
OVC040
FEW030
OVC040
FEW030
OVC040
FEW030
OVC040
FEW030
OVC040
FEW030
OVC040
FEW030
OVC040
FEW030
OVC040
FEW030
OVC040
FEW030
OVC040
FEW030
OVC040
FEW030
OVC040
FEW030
OVC040
FEW030
OVC040
FEW030
OVC040
FEW030
OVC040
FEW030
OVC040
FEW030
OVC040
FEW030
OVC040
Ceiling
4000ft
AGL
4000ft
AGL
4000ft
AGL
4000ft
AGL
4000ft
AGL
4000ft
AGL
4000ft
AGL
4000ft
AGL
4000ft
AGL
4000ft
AGL
4000ft
AGL
4000ft
AGL
4000ft
AGL
4000ft
AGL
4000ft
AGL
4000ft
AGL
4000ft
AGL
4000ft
AGL
4000ft
AGL
Flight Rules IFR IFR IFR IFR IFR IFR IFR IFR IFR IFR IFR IFR IFR IFR IFR IFR IFR IFR IFR
Day/Night
🌙
Night
🌙
Night
🌅 04:15
🌙
Night
🌅 04:15
🌅
Dawn
🌅 04:15
☀️
Day
🌅 04:15
☀️
Day
🌅 04:15
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
🌇 19:44
☀️
Day
🌇 19:44
☀️
Day
🌇 19:44
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 occurrenceAGL: Above Ground Level

Forecast Periods

BASE
IFR
Wind
170° at 12 kt
Visibility
4.8 km
Weather
Light Snow, Mist, GRID34012KT
Clouds
FEW030 OVC040
📖 Plain English Explanation:

This is the base forecast condition. Winds from the South (170°) at 12kt. Visibility will be moderate at 4.8 km. Weather conditions: Light Snow, Mist, GRID34012KT. Few clouds at 3000 feet, Overcast skies at 4000 feet. Instrument Flight Rules (IFR) conditions - instrument flying required.

TEMPO 2026-02-17 21:00:00 - 2026-02-18 01:00:00
IFR
Visibility
3.2 km
Weather
Light Snow, Mist
Clouds
BKN030
📖 Plain English Explanation:

Temporary conditions (lasting less than an hour at a time) may include: Visibility will be moderate at 3.2 km. Weather conditions: Light Snow, Mist. Broken clouds at 3000 feet. Instrument Flight Rules (IFR) conditions - instrument flying required.

BECMG 2026-02-17 23:00:00 - 2026-02-18 01:00:00
VFR
Wind
70° at 12 kt
Visibility
10+ km
Weather
GRID24012KT
Clouds
FEW030 BKN040
📖 Plain English Explanation:

Conditions will gradually change to become: Winds from the East-Northeast (70°) at 12kt. Visibility will be excellent at 10+ km. Weather conditions: GRID24012KT. Few clouds at 3000 feet, Broken clouds at 4000 feet. Conditions will be suitable for Visual Flight Rules (VFR) operations.

📚 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.