University of Illinois Willard Airport

KCMI / CMI

Savoy, US

Current TAF Forecast

Raw TAF:
TAF KCMI 041721Z 0418/0518 09005KT 1 1/2SM BR OVC003 PROB30 0420/0423 3/4SM TSRA BR OVC002CB FM050000 VRB03KT 3SM -SHRA BR OVC003 FM050600 VRB04KT 1/2SM -SHRA FG OVC002 PROB30 0507/0512 1/2SM TSRA BR OVC002CB FM051200 15005KT 1SM SHRA BR OVC003 FM051700 25009KT 4SM BR OVC007

Detailed TAF Table

Parameter
Wed
19:00Z
+-1h
Wed
20:00Z
+0h
Wed
21:00Z
+1h
Wed
22:00Z
+2h
Wed
23:00Z
+3h
Thu
00:00Z
+4h
Thu
01:00Z
+5h
Thu
02:00Z
+6h
Thu
03:00Z
+7h
Thu
04:00Z
+8h
Thu
05:00Z
+9h
Thu
06:00Z
+10h
Thu
07:00Z
+11h
Thu
08:00Z
+12h
Thu
09:00Z
+13h
Thu
10:00Z
+14h
Thu
11:00Z
+15h
Thu
12:00Z
+16h
Thu
13:00Z
+17h
Thu
14:00Z
+18h
Thu
15:00Z
+19h
Thu
16:00Z
+20h
Wind Dir
90°
E
90°
E
90°
E
90°
E
90°
E
VRB
VRB
VRB
VRB
VRB
VRB
VRB
90°
E
90°
E
90°
E
90°
E
90°
E
150°
SE
150°
SE
150°
SE
150°
SE
150°
SE
Wind Speed
5 kt
5 kt
5 kt
5 kt
5 kt
3 kt
3 kt
3 kt
3 kt
3 kt
3 kt
4 kt
5 kt
5 kt
5 kt
5 kt
5 kt
5 kt
5 kt
5 kt
5 kt
5 kt
Visibility
1/2SM
3/4SM
3/4SM
3/4SM
1/2SM
3SM
3SM
3SM
3SM
3SM
3SM
1/2SM
1/2SM
1/2SM
1/2SM
1/2SM
1/2SM
1SM
1SM
1SM
1SM
1SM
Weather
Mist
BR
Thunderstorm Rain, Mist
TSRA BR
30%
Thunderstorm Rain, Mist
TSRA BR
30%
Thunderstorm Rain, Mist
TSRA BR
30%
Mist
BR
Light Showers Rain, Mist
-SHRA BR
Light Showers Rain, Mist
-SHRA BR
Light Showers Rain, Mist
-SHRA BR
Light Showers Rain, Mist
-SHRA BR
Light Showers Rain, Mist
-SHRA BR
Light Showers Rain, Mist
-SHRA BR
Light Showers Rain, Fog
-SHRA FG
Thunderstorm Rain, Mist
TSRA BR
30%
Thunderstorm Rain, Mist
TSRA BR
30%
Thunderstorm Rain, Mist
TSRA BR
30%
Thunderstorm Rain, Mist
TSRA BR
30%
Thunderstorm Rain, Mist
TSRA BR
30%
Showers Rain, Mist
SHRA BR
Showers Rain, Mist
SHRA BR
Showers Rain, Mist
SHRA BR
Showers Rain, Mist
SHRA BR
Showers Rain, Mist
SHRA BR
Clouds
OVC003
OVC002CB
OVC002CB
OVC002CB
OVC003
OVC003
OVC003
OVC003
OVC003
OVC003
OVC003
OVC002
OVC002CB
OVC002CB
OVC002CB
OVC002CB
OVC002CB
OVC003
OVC003
OVC003
OVC003
OVC003
Ceiling
300 ft
AGL
200 ft
AGL
200 ft
AGL
200 ft
AGL
300 ft
AGL
300 ft
AGL
300 ft
AGL
300 ft
AGL
300 ft
AGL
300 ft
AGL
300 ft
AGL
200 ft
AGL
200 ft
AGL
200 ft
AGL
200 ft
AGL
200 ft
AGL
200 ft
AGL
300 ft
AGL
300 ft
AGL
300 ft
AGL
300 ft
AGL
300 ft
AGL
Flight Rules LIFR LIFR LIFR LIFR LIFR LIFR LIFR LIFR LIFR LIFR LIFR LIFR LIFR LIFR LIFR LIFR LIFR LIFR LIFR LIFR LIFR LIFR
Day/Night
🌙
Night
🌇 17:35Z
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌅 06:23Z
🌙
Night
🌅 06:23Z
🌅
Dawn
🌅 06:23Z
☀️
Day
🌅 06:23Z
☀️
Day
🌅 06:23Z
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
🌇 17:36Z
☀️
Day
🌇 17:36Z
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
LIFR
Wind
90° at 5 kt
Visibility
1/2SM
Weather
Mist
Clouds
OVC003
📖 Plain English Explanation:

This is the base forecast condition. Winds from the East (90°) at 5 kt. Visibility will be moderate at 1/2SM. Weather conditions: Mist. Overcast skies at 300 feet. Low IFR conditions - challenging even for instrument operations.

PROB30 20:00Z - 23:00Z
LIFR
Visibility
3/4SM
Weather
Thunderstorm Rain, Mist
Clouds
OVC002CB
📖 Plain English Explanation:

There is a 30% probability of: Visibility will be good at 3/4SM. Weather conditions: Thunderstorm Rain, Mist. Overcast skies at 200 feet. Low IFR conditions - challenging even for instrument operations.

FM050000 00:00Z - 06:00Z
LIFR
Wind
VRB° at 3 kt
Visibility
3SM
Weather
Light Showers Rain, Mist
Clouds
OVC003
📖 Plain English Explanation:

Winds will be variable in direction at 3 kt. Visibility will be good at 3SM. Weather conditions: Light Showers Rain, Mist. Overcast skies at 300 feet. Low IFR conditions - challenging even for instrument operations.

FM050600 06:00Z - 12:00Z
LIFR
Wind
VRB° at 4 kt
Visibility
1/2SM
Weather
Light Showers Rain, Fog
Clouds
OVC002
📖 Plain English Explanation:

Winds will be variable in direction at 4 kt. Visibility will be moderate at 1/2SM. Weather conditions: Light Showers Rain, Fog. Overcast skies at 200 feet. Low IFR conditions - challenging even for instrument operations.

PROB30 07:00Z - 12:00Z
LIFR
Visibility
1/2SM
Weather
Thunderstorm Rain, Mist
Clouds
OVC002CB
📖 Plain English Explanation:

There is a 30% probability of: Visibility will be moderate at 1/2SM. Weather conditions: Thunderstorm Rain, Mist. Overcast skies at 200 feet. Low IFR conditions - challenging even for instrument operations.

FM051200 12:00Z - 18:00Z
LIFR
Wind
150° at 5 kt
Visibility
1SM
Weather
Showers Rain, Mist
Clouds
OVC003
📖 Plain English Explanation:

Winds from the South-Southeast (150°) at 5 kt. Visibility will be moderate at 1SM. Weather conditions: Showers Rain, Mist. Overcast skies at 300 feet. Low IFR conditions - challenging even for instrument operations.

FM051700 17:00Z - 23:00Z
IFR
Wind
250° at 9 kt
Visibility
4SM
Weather
Mist
Clouds
OVC007
📖 Plain English Explanation:

Winds from the West-Southwest (250°) at 9 kt. Visibility will be good at 4SM. Weather conditions: Mist. Overcast skies at 700 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.