Naval Station Mayport / Admiral David L McDonald Field

KNRB / NRB

Jacksonville, US

Current TAF Forecast

Raw TAF:
TAF KNRB 1007/1107 14008KT 9999 VCTS SCT025CB BKN200 QNH3003INS TEMPO 1009/1015 VRB15G25KT 3200 TSRA BKN015CB OVC030 FM101500 12012KT 8000 -SHRA VCTS BKN025CB OVC050 QNH3001INS TEMPO 1015/1020 VRB18G28KT 3200 TSRA BKN015CB OVC030 FM102000 13010KT 9999 SCT025 SCT250 QNH2999INS BECMG 1101/1103 16009KT 9999 FEW050 SCT250 QNH2997INS AUTOMATED SENSOR METWATCH 1007 TIL 1010 TX30/1019Z TN23/1011Z FN00298

Detailed TAF Table

Parameter
Wed
14:00Z
+-1h
Wed
15:00Z
+0h
Wed
16:00Z
+1h
Wed
17:00Z
+2h
Wed
18:00Z
+3h
Wed
19:00Z
+4h
Wed
20:00Z
+5h
Wed
21:00Z
+6h
Wed
22:00Z
+7h
Wed
23:00Z
+8h
Thu
00:00Z
+9h
Thu
01:00Z
+10h
Wind Dir
140°
SE
VRB
VRB
VRB
VRB
VRB
130°
SE
130°
SE
130°
SE
130°
SE
130°
SE
160°
S
Wind Speed
8 kt
18 kt
G28 kt
18 kt
G28 kt
18 kt
G28 kt
18 kt
G28 kt
18 kt
G28 kt
10 kt
10 kt
10 kt
10 kt
10 kt
9 kt
Visibility
10+ km
3.2 km
3.2 km
3.2 km
3.2 km
3.2 km
10+ km
10+ km
10+ km
10+ km
10+ km
1.01 km
Weather
☀️ Clear
Thunderstorm Rain
TSRA
Thunderstorm Rain
TSRA
Thunderstorm Rain
TSRA
Thunderstorm Rain
TSRA
Thunderstorm Rain
TSRA
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
Clouds
SCT025CB
BKN200
BKN015CB
OVC030
BKN015CB
OVC030
BKN015CB
OVC030
BKN015CB
OVC030
BKN015CB
OVC030
SCT025
SCT250
SCT025
SCT250
SCT025
SCT250
SCT025
SCT250
SCT025
SCT250
FEW050
SCT250
Ceiling
20,000 ft
AGL
1,500 ft
AGL
1,500 ft
AGL
1,500 ft
AGL
1,500 ft
AGL
1,500 ft
AGL
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
Flight Rules MVFR IFR IFR IFR IFR IFR VFR VFR VFR VFR VFR LIFR
Day/Night
☀️
Day
☀️
Day
☀️
Day
🌇 18:59Z
☀️
Day
🌇 18:59Z
☀️
Day
🌇 18:59Z
🌇
Dusk
🌇 18:59Z
🌙
Night
🌇 18:59Z
🌙
Night
🌙
Night
🌙
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
MVFR
Wind
140° at 8 kt
Visibility
10+ km
Clouds
SCT025CB BKN200
📖 Plain English Explanation:

This is the base forecast condition. Winds from the Southeast (140°) at 8 kt. Visibility will be excellent at 10+ km. Scattered clouds at 2500 feet, Broken clouds at 20000 feet. Marginal VFR conditions - some restrictions for visual flying.

TEMPO 09:00Z - 15:00Z
IFR
Wind
VRB° at 15 kt
Gusts: 25 kt
Visibility
3.2 km
Weather
Thunderstorm Rain
Clouds
BKN015CB OVC030
📖 Plain English Explanation:

Temporary conditions (lasting less than an hour at a time) may include: Winds will be variable in direction at 15 kt. Gusts up to 25 kt are expected. Visibility will be moderate at 3.2 km. Weather conditions: Thunderstorm Rain. Broken clouds at 1500 feet, Overcast skies at 3000 feet. Instrument Flight Rules (IFR) conditions - instrument flying required.

FM101500 15:00Z - 21:00Z
MVFR
Wind
120° at 12 kt
Visibility
8 km
Weather
Light Showers Rain
Clouds
BKN025CB OVC050
📖 Plain English Explanation:

Winds from the East-Southeast (120°) at 12 kt. Visibility will be good at 8 km. Weather conditions: Light Showers Rain. Broken clouds at 2500 feet, Overcast skies at 5000 feet. Marginal VFR conditions - some restrictions for visual flying.

TEMPO 15:00Z - 20:00Z
IFR
Wind
VRB° at 18 kt
Gusts: 28 kt
Visibility
3.2 km
Weather
Thunderstorm Rain
Clouds
BKN015CB OVC030
📖 Plain English Explanation:

Temporary conditions (lasting less than an hour at a time) may include: Winds will be variable in direction at 18 kt. Gusts up to 28 kt are expected. Visibility will be moderate at 3.2 km. Weather conditions: Thunderstorm Rain. Broken clouds at 1500 feet, Overcast skies at 3000 feet. Instrument Flight Rules (IFR) conditions - instrument flying required.

FM102000 20:00Z - 02:00Z
VFR
Wind
130° at 10 kt
Visibility
10+ km
Clouds
SCT025 SCT250
📖 Plain English Explanation:

Winds from the Southeast (130°) at 10 kt. Visibility will be excellent at 10+ km. Scattered clouds at 2500 feet, Scattered clouds at 25000 feet. Conditions will be suitable for Visual Flight Rules (VFR) operations.

BECMG 01:00Z - 03:00Z
LIFR
Wind
160° at 9 kt
Visibility
1.01 km
Clouds
FEW050 SCT250
📖 Plain English Explanation:

Conditions will gradually change to become: Winds from the South-Southeast (160°) at 9 kt. Visibility will be poor at 1.01 km. Few clouds at 5000 feet, Scattered clouds at 25000 feet. Low IFR conditions - challenging even for instrument operations.

📚 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.