Tri-Cities Regional TN/VA Airport

KTRI / TRI

Blountville, US

Current TAF Forecast

Raw TAF:
TAF KTRI 041723Z 0418/0518 VRB05KT P6SM BKN035 BKN250 FM042000 25006KT P6SM FEW050 SCT250 PROB30 0422/0503 4SM TSRA BKN030CB

Detailed TAF Table

Parameter
Sat
18:00Z
+-1h
Sat
19:00Z
+0h
Sat
20:00Z
+1h
Sat
21:00Z
+2h
Sat
22:00Z
+3h
Sat
23:00Z
+4h
Sun
00:00Z
+5h
Sun
01:00Z
+6h
Sun
02:00Z
+7h
Sun
03:00Z
+8h
Sun
04:00Z
+9h
Sun
05:00Z
+10h
Sun
06:00Z
+11h
Sun
07:00Z
+12h
Sun
08:00Z
+13h
Sun
09:00Z
+14h
Sun
10:00Z
+15h
Sun
11:00Z
+16h
Sun
12:00Z
+17h
Sun
13:00Z
+18h
Sun
14:00Z
+19h
Sun
15:00Z
+20h
Sun
16:00Z
+21h
Wind Dir
VRB
VRB
250°
W
250°
W
VRB
VRB
VRB
VRB
VRB
VRB
VRB
VRB
VRB
VRB
VRB
VRB
VRB
VRB
VRB
VRB
VRB
VRB
VRB
Wind Speed
5 kt
5 kt
6 kt
6 kt
5 kt
5 kt
5 kt
5 kt
5 kt
5 kt
5 kt
5 kt
5 kt
5 kt
5 kt
5 kt
5 kt
5 kt
5 kt
5 kt
5 kt
5 kt
5 kt
Visibility
>6SM
>6SM
>6SM
>6SM
4SM
4SM
4SM
4SM
4SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
Weather
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
Thunderstorm Rain
TSRA
30%
Thunderstorm Rain
TSRA
30%
Thunderstorm Rain
TSRA
30%
Thunderstorm Rain
TSRA
30%
Thunderstorm Rain
TSRA
30%
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
Clouds
BKN035
BKN250
BKN035
BKN250
FEW050
SCT250
FEW050
SCT250
BKN030CB
BKN030CB
BKN030CB
BKN030CB
BKN030CB
BKN035
BKN250
BKN035
BKN250
BKN035
BKN250
BKN035
BKN250
BKN035
BKN250
BKN035
BKN250
BKN035
BKN250
BKN035
BKN250
BKN035
BKN250
BKN035
BKN250
BKN035
BKN250
BKN035
BKN250
BKN035
BKN250
BKN035
BKN250
Ceiling
3,500 ft
AGL
3,500 ft
AGL
🌤️ Unlimited
🌤️ Unlimited
3,000 ft
AGL
3,000 ft
AGL
3,000 ft
AGL
3,000 ft
AGL
3,000 ft
AGL
3,500 ft
AGL
3,500 ft
AGL
3,500 ft
AGL
3,500 ft
AGL
3,500 ft
AGL
3,500 ft
AGL
3,500 ft
AGL
3,500 ft
AGL
3,500 ft
AGL
3,500 ft
AGL
3,500 ft
AGL
3,500 ft
AGL
3,500 ft
AGL
3,500 ft
AGL
Flight Rules VFR VFR VFR VFR MVFR MVFR MVFR MVFR MVFR VFR VFR VFR VFR VFR VFR VFR VFR VFR VFR VFR VFR VFR VFR
Day/Night
☀️
Day
🌇 19:09Z
☀️
Day
🌇 19:09Z
🌙
Night
🌇 19:09Z
🌙
Night
🌇 19:09Z
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌅 04:50Z
🌙
Night
🌅 04:50Z
🌙
Night
🌅 04:50Z
☀️
Day
🌅 04:50Z
☀️
Day
🌅 04:50Z
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
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
VRB° at 5 kt
Visibility
>6SM
Clouds
BKN035 BKN250
📖 Plain English Explanation:

This is the base forecast condition. Winds will be variable in direction at 5 kt. Visibility will be excellent at more than 6SM. Broken clouds at 3500 feet, Broken clouds at 25000 feet. Conditions will be suitable for Visual Flight Rules (VFR) operations.

FM042000 20:00Z - 02:00Z
VFR
Wind
250° at 6 kt
Visibility
>6SM
Clouds
FEW050 SCT250
📖 Plain English Explanation:

Winds from the West-Southwest (250°) at 6 kt. Visibility will be excellent at more than 6SM. Few clouds at 5000 feet, Scattered clouds at 25000 feet. Conditions will be suitable for Visual Flight Rules (VFR) operations.

PROB30 22:00Z - 03:00Z
MVFR
Visibility
4SM
Weather
Thunderstorm Rain
Clouds
BKN030CB
📖 Plain English Explanation:

There is a 30% probability of: Visibility will be good at 4SM. Weather conditions: Thunderstorm Rain. Broken clouds at 3000 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.