Naval Station Mayport / Admiral David L McDonald Field

KNRB / NRB

Jacksonville, US

Current TAF Forecast

Raw TAF:
TAF KNRB 220600Z 2207/2307 VRB05KT 9999 BKN250 QNH3020INS TEMPO 2212/2218 8000 HZ SCT030 FM221900 10008KT 9999 SCT050 BKN250 QNH3013INS AUTOMATED SENSOR METWATCH 2207 TIL 2210 TX26/2218Z TN17/2211Z FN00284

Detailed TAF Table

Parameter
Wed
07:00Z
+-1h
Wed
08:00Z
+0h
Wed
09:00Z
+1h
Wed
10:00Z
+2h
Wed
11:00Z
+3h
Wed
12:00Z
+4h
Wed
13:00Z
+5h
Wed
14:00Z
+6h
Wed
15:00Z
+7h
Wed
16:00Z
+8h
Wed
17:00Z
+9h
Wed
18:00Z
+10h
Wed
19:00Z
+11h
Wed
20:00Z
+12h
Wed
21:00Z
+13h
Wed
22:00Z
+14h
Wed
23:00Z
+15h
Thu
00:00Z
+16h
Thu
01:00Z
+17h
Thu
02:00Z
+18h
Thu
03:00Z
+19h
Thu
04:00Z
+20h
Thu
05:00Z
+21h
Wind Dir
VRB
VRB
VRB
VRB
VRB
VRB
VRB
VRB
VRB
VRB
VRB
VRB
100°
E
100°
E
100°
E
100°
E
100°
E
100°
E
VRB
VRB
VRB
VRB
VRB
Wind Speed
5 kt
5 kt
5 kt
5 kt
5 kt
5 kt
5 kt
5 kt
5 kt
5 kt
5 kt
5 kt
8 kt
8 kt
8 kt
8 kt
8 kt
8 kt
5 kt
5 kt
5 kt
5 kt
5 kt
Visibility
10+ km
10+ km
10+ km
10+ km
10+ km
8 km
8 km
8 km
8 km
8 km
8 km
10+ km
2.21 km
2.21 km
2.21 km
2.21 km
2.21 km
2.21 km
10+ km
10+ km
10+ km
10+ km
10+ km
Weather
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
Haze
HZ
Haze
HZ
Haze
HZ
Haze
HZ
Haze
HZ
Haze
HZ
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
Clouds
BKN250
BKN250
BKN250
BKN250
BKN250
SCT030
SCT030
SCT030
SCT030
SCT030
SCT030
BKN250
SCT050
BKN250
SCT050
BKN250
SCT050
BKN250
SCT050
BKN250
SCT050
BKN250
SCT050
BKN250
BKN250
BKN250
BKN250
BKN250
BKN250
Ceiling
25,000 ft
AGL
25,000 ft
AGL
25,000 ft
AGL
25,000 ft
AGL
25,000 ft
AGL
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
25,000 ft
AGL
25,000 ft
AGL
25,000 ft
AGL
25,000 ft
AGL
25,000 ft
AGL
25,000 ft
AGL
25,000 ft
AGL
25,000 ft
AGL
25,000 ft
AGL
25,000 ft
AGL
25,000 ft
AGL
25,000 ft
AGL
Flight Rules VFR VFR VFR VFR VFR MVFR MVFR MVFR MVFR MVFR MVFR VFR IFR IFR IFR IFR IFR IFR VFR VFR VFR VFR VFR
Day/Night
☀️
Day
🌅 05:30Z
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
🌇 18:29Z
☀️
Day
🌇 18:29Z
☀️
Day
🌇 18:29Z
🌙
Night
🌇 18:29Z
🌙
Night
🌇 18:29Z
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌅 05:29Z
🌙
Night
🌅 05:29Z
🌅
Dawn
🌅 05:29Z
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 5 kt
Visibility
10+ km
Clouds
BKN250
📖 Plain English Explanation:

This is the base forecast condition. Winds will be variable in direction at 5 kt. Visibility will be excellent at 10+ km. Broken clouds at 25000 feet. Conditions will be suitable for Visual Flight Rules (VFR) operations.

TEMPO 12:00Z - 18:00Z
MVFR
Visibility
8 km
Weather
Haze
Clouds
SCT030
📖 Plain English Explanation:

Temporary conditions (lasting less than an hour at a time) may include: Visibility will be good at 8 km. Weather conditions: Haze. Scattered clouds at 3000 feet. Marginal VFR conditions - some restrictions for visual flying.

FM221900 19:00Z - 01:00Z
IFR
Wind
100° at 8 kt
Visibility
2.21 km
Clouds
SCT050 BKN250
📖 Plain English Explanation:

Winds from the East (100°) at 8 kt. Visibility will be moderate at 2.21 km. Scattered clouds at 5000 feet, Broken clouds at 25000 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.