Gerald R. Ford International Airport

KGRR / GRR

Grand Rapids, US

Current TAF Forecast

Raw TAF:
TAF KGRR 042340Z 0500/0524 VRB04KT P6SM SCT035 BKN050 FM050200 VRB04KT P6SM BKN025 FM050600 09005KT 4SM BR BKN013 FM051300 08008KT 2SM -RA BKN004 FM051500 08009KT 3/4SM -RA BR OVC003 FM051900 07010KT 4SM -RA BKN005

Detailed TAF Table

Parameter
Thu
02:00Z
+-1h
Thu
03:00Z
+0h
Thu
04:00Z
+1h
Thu
05:00Z
+2h
Thu
06:00Z
+3h
Thu
07:00Z
+4h
Thu
08:00Z
+5h
Thu
09:00Z
+6h
Thu
10:00Z
+7h
Thu
11:00Z
+8h
Thu
12:00Z
+9h
Thu
13:00Z
+10h
Thu
14:00Z
+11h
Thu
15:00Z
+12h
Thu
16:00Z
+13h
Thu
17:00Z
+14h
Thu
18:00Z
+15h
Thu
19:00Z
+16h
Thu
20:00Z
+17h
Thu
21:00Z
+18h
Thu
22:00Z
+19h
Wind Dir
VRB
VRB
VRB
VRB
90°
E
90°
E
90°
E
90°
E
90°
E
90°
E
VRB
80°
E
80°
E
80°
E
80°
E
80°
E
80°
E
70°
E
70°
E
70°
E
70°
E
Wind Speed
4 kt
4 kt
4 kt
4 kt
5 kt
5 kt
5 kt
5 kt
5 kt
5 kt
4 kt
8 kt
8 kt
9 kt
9 kt
9 kt
9 kt
10 kt
10 kt
10 kt
10 kt
Visibility
>6SM
>6SM
>6SM
>6SM
4SM
4SM
4SM
4SM
4SM
4SM
>6SM
2SM
2SM
3/4SM
3/4SM
3/4SM
3/4SM
4SM
4SM
4SM
4SM
Weather
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
Mist
BR
Mist
BR
Mist
BR
Mist
BR
Mist
BR
Mist
BR
☀️ Clear
Light Rain
-RA
Light Rain
-RA
Light Rain, Mist
-RA BR
Light Rain, Mist
-RA BR
Light Rain, Mist
-RA BR
Light Rain, Mist
-RA BR
Light Rain
-RA
Light Rain
-RA
Light Rain
-RA
Light Rain
-RA
Clouds
SCT035
BKN050
SCT035
BKN050
SCT035
BKN050
SCT035
BKN050
BKN013
BKN013
BKN013
BKN013
BKN013
BKN013
SCT035
BKN050
BKN004
BKN004
OVC003
OVC003
OVC003
OVC003
BKN005
BKN005
BKN005
BKN005
Ceiling
5,000 ft
AGL
5,000 ft
AGL
5,000 ft
AGL
5,000 ft
AGL
1,300 ft
AGL
1,300 ft
AGL
1,300 ft
AGL
1,300 ft
AGL
1,300 ft
AGL
1,300 ft
AGL
5,000 ft
AGL
400 ft
AGL
400 ft
AGL
300 ft
AGL
300 ft
AGL
300 ft
AGL
300 ft
AGL
500 ft
AGL
500 ft
AGL
500 ft
AGL
500 ft
AGL
Flight Rules VFR VFR VFR VFR IFR IFR IFR IFR IFR IFR VFR LIFR LIFR LIFR LIFR LIFR LIFR IFR IFR IFR IFR
Day/Night
🌙
Night
🌙
Night
🌙
Night
🌅 06:24Z
🌙
Night
🌅 06:24Z
🌅
Dawn
🌅 06:24Z
☀️
Day
🌅 06:24Z
☀️
Day
🌅 06:24Z
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
🌇 17:35Z
☀️
Day
🌇 17:35Z
☀️
Day
🌇 17:35Z
🌇
Dusk
🌇 17:35Z
🌙
Night
🌇 17:35Z
🌙
Night
🌙
Night
🌙
Night
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
VFR
Wind
VRB° at 4 kt
Visibility
>6SM
Clouds
SCT035 BKN050
📖 Plain English Explanation:

This is the base forecast condition. Winds will be variable in direction at 4 kt. Visibility will be excellent at more than 6SM. Scattered clouds at 3500 feet, Broken clouds at 5000 feet. Conditions will be suitable for Visual Flight Rules (VFR) operations.

FM050200 02:00Z - 08:00Z
MVFR
Wind
VRB° at 4 kt
Visibility
>6SM
Clouds
BKN025
📖 Plain English Explanation:

Winds will be variable in direction at 4 kt. Visibility will be excellent at more than 6SM. Broken clouds at 2500 feet. Marginal VFR conditions - some restrictions for visual flying.

FM050600 06:00Z - 12:00Z
IFR
Wind
90° at 5 kt
Visibility
4SM
Weather
Mist
Clouds
BKN013
📖 Plain English Explanation:

Winds from the East (90°) at 5 kt. Visibility will be good at 4SM. Weather conditions: Mist. Broken clouds at 1300 feet. Instrument Flight Rules (IFR) conditions - instrument flying required.

FM051300 13:00Z - 19:00Z
LIFR
Wind
80° at 8 kt
Visibility
2SM
Weather
Light Rain
Clouds
BKN004
📖 Plain English Explanation:

Winds from the East (80°) at 8 kt. Visibility will be moderate at 2SM. Weather conditions: Light Rain. Broken clouds at 400 feet. Low IFR conditions - challenging even for instrument operations.

FM051500 15:00Z - 21:00Z
LIFR
Wind
80° at 9 kt
Visibility
3/4SM
Weather
Light Rain, Mist
Clouds
OVC003
📖 Plain English Explanation:

Winds from the East (80°) at 9 kt. Visibility will be good at 3/4SM. Weather conditions: Light Rain, Mist. Overcast skies at 300 feet. Low IFR conditions - challenging even for instrument operations.

FM051900 19:00Z - 01:00Z
IFR
Wind
70° at 10 kt
Visibility
4SM
Weather
Light Rain
Clouds
BKN005
📖 Plain English Explanation:

Winds from the East-Northeast (70°) at 10 kt. Visibility will be good at 4SM. Weather conditions: Light Rain. Broken clouds at 500 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.