Grissom Air Reserve Base

KGUS / GUS

Peru, US

Current TAF Forecast

Raw TAF:
TAF AMD KGUS 041635Z 0416/0520 10009KT 4800 BR OVC004 QNH3004INS TEMPO 0416/0420 2400 -DZ BR OVC003 TEMPO 0420/0423 3200 -RA BR OVC002 BECMG 0422/0423 11008KT 4800 -SHRA BKN003 OVC010 QNH2999INS TEMPO 0500/0506 22015G25KT 1600 TSRA BR SCT002 BKN004 OVC010CB BECMG 0517/0518 19010G15KT 9999 NSW SCT008 BKN015 BKN120 OVC200 QNH2986INS TX08/0421Z TN05/0416Z

Detailed TAF Table

Parameter
Wed
22:00Z
+-1h
Wed
23:00Z
+0h
Thu
00:00Z
+1h
Thu
01:00Z
+2h
Thu
02:00Z
+3h
Thu
03:00Z
+4h
Thu
04:00Z
+5h
Thu
05:00Z
+6h
Thu
06:00Z
+7h
Thu
07:00Z
+8h
Thu
08:00Z
+9h
Thu
09:00Z
+10h
Thu
10:00Z
+11h
Thu
11:00Z
+12h
Thu
12:00Z
+13h
Thu
13:00Z
+14h
Thu
14:00Z
+15h
Thu
15:00Z
+16h
Thu
16:00Z
+17h
Thu
17:00Z
+18h
Thu
18:00Z
+19h
Wind Dir
100°
E
110°
E
220°
SW
220°
SW
220°
SW
220°
SW
220°
SW
220°
SW
110°
E
110°
E
110°
E
110°
E
110°
E
110°
E
110°
E
110°
E
110°
E
110°
E
110°
E
110°
E
110°
E
Wind Speed
9 kt
8 kt
G15 kt
15 kt
G25 kt
15 kt
G25 kt
15 kt
G25 kt
15 kt
G25 kt
15 kt
G25 kt
15 kt
G25 kt
8 kt
G15 kt
8 kt
G15 kt
8 kt
G15 kt
8 kt
G15 kt
8 kt
G15 kt
8 kt
G15 kt
8 kt
G15 kt
8 kt
G15 kt
8 kt
G15 kt
8 kt
G15 kt
8 kt
G15 kt
8 kt
G15 kt
8 kt
G15 kt
Visibility
4.8 km
4.8 km
1.6 km
1.6 km
1.6 km
1.6 km
1.6 km
1.6 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
Mist
BR
Light Showers Rain
-SHRA
Thunderstorm Rain, Mist
TSRA BR
Thunderstorm Rain, Mist
TSRA BR
Thunderstorm Rain, Mist
TSRA BR
Thunderstorm Rain, Mist
TSRA BR
Thunderstorm Rain, Mist
TSRA BR
Thunderstorm Rain, Mist
TSRA BR
Light Showers Rain
-SHRA
Light Showers Rain
-SHRA
Light Showers Rain
-SHRA
Light Showers Rain
-SHRA
Light Showers Rain
-SHRA
Light Showers Rain
-SHRA
Light Showers Rain
-SHRA
Light Showers Rain
-SHRA
Light Showers Rain
-SHRA
Light Showers Rain
-SHRA
Light Showers Rain
-SHRA
Light Showers Rain
-SHRA
Light Showers Rain
-SHRA
Clouds
OVC004
BKN003
OVC010
SCT002
BKN004
SCT002
BKN004
SCT002
BKN004
SCT002
BKN004
SCT002
BKN004
SCT002
BKN004
BKN003
OVC010
BKN003
OVC010
BKN003
OVC010
BKN003
OVC010
BKN003
OVC010
BKN003
OVC010
BKN003
OVC010
BKN003
OVC010
BKN003
OVC010
BKN003
OVC010
BKN003
OVC010
BKN003
OVC010
BKN003
OVC010
Ceiling
400 ft
AGL
300 ft
AGL
400 ft
AGL
400 ft
AGL
400 ft
AGL
400 ft
AGL
400 ft
AGL
400 ft
AGL
300 ft
AGL
300 ft
AGL
300 ft
AGL
300 ft
AGL
300 ft
AGL
300 ft
AGL
300 ft
AGL
300 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
Day/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
☀️
Day
🌇 17:36Z
🌇
Dusk
🌇 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
100° at 9 kt
Visibility
4.8 km
Weather
Mist
Clouds
OVC004
📖 Plain English Explanation:

This is the base forecast condition. Winds from the East (100°) at 9 kt. Visibility will be moderate at 4.8 km. Weather conditions: Mist. Overcast skies at 400 feet. Low IFR conditions - challenging even for instrument operations.

TEMPO 16:00Z - 20:00Z
LIFR
Visibility
2.4 km
Weather
Light Drizzle, Mist
Clouds
OVC003
📖 Plain English Explanation:

Temporary conditions (lasting less than an hour at a time) may include: Visibility will be moderate at 2.4 km. Weather conditions: Light Drizzle, Mist. Overcast skies at 300 feet. Low IFR conditions - challenging even for instrument operations.

TEMPO 20:00Z - 23:00Z
LIFR
Visibility
3.2 km
Weather
Light Rain, Mist
Clouds
OVC002
📖 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 Rain, Mist. Overcast skies at 200 feet. Low IFR conditions - challenging even for instrument operations.

BECMG 22:00Z - 23:00Z
LIFR
Wind
110° at 8 kt
Visibility
4.8 km
Weather
Light Showers Rain
Clouds
BKN003 OVC010
📖 Plain English Explanation:

Conditions will gradually change to become: Winds from the East-Southeast (110°) at 8 kt. Visibility will be moderate at 4.8 km. Weather conditions: Light Showers Rain. Broken clouds at 300 feet, Overcast skies at 1000 feet. Low IFR conditions - challenging even for instrument operations.

TEMPO 00:00Z - 06:00Z
LIFR
Wind
220° at 15 kt
Gusts: 25 kt
Visibility
1.6 km
Weather
Thunderstorm Rain, Mist
Clouds
SCT002 BKN004 OVC010CB
📖 Plain English Explanation:

Temporary conditions (lasting less than an hour at a time) may include: Winds from the Southwest (220°) at 15 kt. Gusts up to 25 kt are expected. Visibility will be moderate at 1.6 km. Weather conditions: Thunderstorm Rain, Mist. Scattered clouds at 200 feet, Broken clouds at 400 feet, Overcast skies at 1000 feet. Low IFR conditions - challenging even for instrument operations.

BECMG 17:00Z - 18:00Z
MVFR
Wind
190° at 10 kt
Gusts: 15 kt
Visibility
10+ km
Clouds
SCT008 BKN015 BKN120 OVC200
📖 Plain English Explanation:

Conditions will gradually change to become: Winds from the South (190°) at 10 kt. Gusts up to 15 kt are expected. Visibility will be excellent at 10+ km. Scattered clouds at 800 feet, Broken clouds at 1500 feet, Broken clouds at 12000 feet, Overcast skies at 20000 feet. Marginal VFR conditions - some restrictions for visual flying.

📚 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.