Juan Santamaría International Airport

MROC / SJO

San José (Alajuela), CR

Current TAF Forecast

Raw TAF:
TAF MROC 032324Z 0400/0424 11010KT 9999 FEW035 TX29/0419Z TN22/0411Z TEMPO 0402/0405 22005KT DZ BKN010 TEMPO 0420/0424 24008KT SHRA SCT010TCU

Detailed TAF Table

Parameter
Sat
03:00Z
+-1h
Sat
04:00Z
+0h
Sat
05:00Z
+1h
Sat
06:00Z
+2h
Sat
07:00Z
+3h
Sat
08:00Z
+4h
Sat
09:00Z
+5h
Sat
10:00Z
+6h
Sat
11:00Z
+7h
Sat
12:00Z
+8h
Sat
13:00Z
+9h
Sat
14:00Z
+10h
Sat
15:00Z
+11h
Sat
16:00Z
+12h
Sat
17:00Z
+13h
Sat
18:00Z
+14h
Sat
19:00Z
+15h
Sat
20:00Z
+16h
Sat
21:00Z
+17h
Sat
22:00Z
+18h
Wind Dir
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
110°
E
110°
E
110°
E
110°
E
240°
SW
240°
SW
240°
SW
Wind Speed
10 kt
10 kt
10 kt
10 kt
10 kt
10 kt
10 kt
10 kt
10 kt
10 kt
10 kt
10 kt
10 kt
10 kt
10 kt
10 kt
10 kt
8 kt
8 kt
8 kt
Visibility
10+ km
10+ km
10+ km
10+ km
10+ km
10+ km
10+ km
10+ km
10+ km
10+ km
10+ km
10+ km
10+ km
10+ km
10+ km
10+ km
10+ km
10+ km
10+ km
10+ km
Weather
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
Showers Rain
SHRA
Showers Rain
SHRA
Showers Rain
SHRA
Clouds
FEW035
FEW035
FEW035
FEW035
FEW035
FEW035
FEW035
FEW035
FEW035
FEW035
FEW035
FEW035
FEW035
FEW035
FEW035
FEW035
FEW035
SCT010TCU
SCT010TCU
SCT010TCU
Ceiling
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
🌤️ Unlimited
1,000 ft ⛈️
TCU Base
1,000 ft ⛈️
TCU Base
1,000 ft ⛈️
TCU Base
Flight Rules VFR VFR VFR VFR VFR VFR VFR VFR VFR VFR VFR VFR VFR VFR VFR VFR VFR IFR IFR IFR
Day/Night
🌙
Night
🌅 05:39Z
🌙
Night
🌅 05:39Z
🌙
Night
🌅 05:39Z
☀️
Day
🌅 05:39Z
☀️
Day
🌅 05:39Z
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
☀️
Day
🌇 18:20Z
☀️
Day
🌇 18:20Z
☀️
Day
🌇 18:20Z
🌙
Night
🌇 18:20Z
🌙
Night
🌇 18:20Z
🌙
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
VFR
Wind
110° at 10 kt
Visibility
10+ km
Clouds
FEW035
📖 Plain English Explanation:

This is the base forecast condition. Winds from the East-Southeast (110°) at 10 kt. Visibility will be excellent at 10+ km. Few clouds at 3500 feet. Conditions will be suitable for Visual Flight Rules (VFR) operations.

TEMPO 02:00Z - 05:00Z
IFR
Wind
220° at 5 kt
Weather
Drizzle
Clouds
BKN010
📖 Plain English Explanation:

Temporary conditions (lasting less than an hour at a time) may include: Winds from the Southwest (220°) at 5 kt. Weather conditions: Drizzle. Broken clouds at 1000 feet. Instrument Flight Rules (IFR) conditions - instrument flying required.

TEMPO 20:00Z - 00:00Z
IFR
Wind
240° at 8 kt
Weather
Showers Rain
Clouds
SCT010TCU
📖 Plain English Explanation:

Temporary conditions (lasting less than an hour at a time) may include: Winds from the West-Southwest (240°) at 8 kt. Weather conditions: Showers Rain. Scattered clouds at 1000 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.