John C. Munro Hamilton International Airport

CYHM / YHM

Hamilton, CA

Current TAF Forecast

Raw TAF:
TAF CYHM 041740Z 0418/0518 20008KT P6SM SCT040 BKN080 TEMPO 0418/0423 P6SM -SHRA BKN040 BKN080 PROB30 0418/0423 VRB20G30KT 2SM TSRA BR BKN015 OVC060CB FM050000 02005KT P6SM BKN015 OVC060 TEMPO 0500/0502 SCT015 OVC060 FM050200 02005KT 6SM BR SCT004 BKN010 OVC060 PROB30 0502/0505 2SM -DZ BR OVC004 FM050500 04008KT 2SM BR OVC004 PROB30 0505/0514 1/4SM -DZ FG VV001 FM051400 04010KT P6SM BKN004 OVC015 FM051700 04010KT P6SM BKN015 OVC060 RMK NXT FCST BY 050000Z

Detailed TAF Table

Parameter
Sat
19:00Z
+-1h
Sat
20:00Z
+0h
Sat
21:00Z
+1h
Sat
22:00Z
+2h
Sat
23:00Z
+3h
Sun
00:00Z
+4h
Sun
01:00Z
+5h
Sun
02:00Z
+6h
Sun
03:00Z
+7h
Sun
04:00Z
+8h
Sun
05:00Z
+9h
Sun
06:00Z
+10h
Sun
07:00Z
+11h
Sun
08:00Z
+12h
Sun
09:00Z
+13h
Sun
10:00Z
+14h
Sun
11:00Z
+15h
Sun
12:00Z
+16h
Sun
13:00Z
+17h
Sun
14:00Z
+18h
Sun
15:00Z
+19h
Sun
16:00Z
+20h
Wind Dir
200°
S
200°
S
200°
S
200°
S
200°
S
200°
S
200°
S
200°
S
200°
S
200°
S
200°
S
200°
S
200°
S
200°
S
200°
S
200°
S
200°
S
200°
S
200°
S
40°
NE
40°
NE
40°
NE
Wind Speed
8 kt
8 kt
8 kt
8 kt
8 kt
8 kt
8 kt
8 kt
8 kt
8 kt
8 kt
8 kt
8 kt
8 kt
8 kt
8 kt
8 kt
8 kt
8 kt
10 kt
10 kt
10 kt
Visibility
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
>6SM
2SM
2SM
2SM
1/4SM
1/4SM
1/4SM
1/4SM
1/4SM
1/4SM
1/4SM
1/4SM
1/4SM
>6SM
>6SM
>6SM
Weather
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
☀️ Clear
Light Drizzle, Mist
-DZ BR
30%
Light Drizzle, Mist
-DZ BR
30%
Light Drizzle, Mist
-DZ BR
30%
Light Drizzle, Fog
-DZ FG
30%
Light Drizzle, Fog
-DZ FG
30%
Light Drizzle, Fog
-DZ FG
30%
Light Drizzle, Fog
-DZ FG
30%
Light Drizzle, Fog
-DZ FG
30%
Light Drizzle, Fog
-DZ FG
30%
Light Drizzle, Fog
-DZ FG
30%
Light Drizzle, Fog
-DZ FG
30%
Light Drizzle, Fog
-DZ FG
30%
☀️ Clear
☀️ Clear
☀️ Clear
Clouds
SCT040
BKN080
SCT040
BKN080
SCT040
BKN080
SCT040
BKN080
SCT040
BKN080
SCT015
OVC060
SCT015
OVC060
OVC004
OVC004
OVC004
VV001
VV001
VV001
VV001
VV001
VV001
VV001
VV001
VV001
BKN004
OVC015
BKN004
OVC015
BKN004
OVC015
Ceiling
8,000 ft
AGL
8,000 ft
AGL
8,000 ft
AGL
8,000 ft
AGL
8,000 ft
AGL
6,000 ft
AGL
6,000 ft
AGL
400 ft
AGL
400 ft
AGL
400 ft
AGL
100 ft 🌫️
Indefinite
100 ft 🌫️
Indefinite
100 ft 🌫️
Indefinite
100 ft 🌫️
Indefinite
100 ft 🌫️
Indefinite
100 ft 🌫️
Indefinite
100 ft 🌫️
Indefinite
100 ft 🌫️
Indefinite
100 ft 🌫️
Indefinite
400 ft
AGL
400 ft
AGL
400 ft
AGL
Flight Rules VFR VFR VFR VFR VFR VFR VFR LIFR LIFR LIFR LIFR LIFR LIFR LIFR LIFR LIFR LIFR LIFR LIFR LIFR LIFR LIFR
Day/Night
☀️
Day
🌇 19:20Z
🌙
Night
🌇 19:20Z
🌙
Night
🌇 19:20Z
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌙
Night
🌅 04:39Z
🌙
Night
🌅 04:39Z
🌙
Night
🌅 04:39Z
☀️
Day
🌅 04:39Z
☀️
Day
🌅 04:39Z
☀️
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
200° at 8 kt
Visibility
>6SM
Clouds
SCT040 BKN080
📖 Plain English Explanation:

This is the base forecast condition. Winds from the South-Southwest (200°) at 8 kt. Visibility will be excellent at more than 6SM. Scattered clouds at 4000 feet, Broken clouds at 8000 feet. Conditions will be suitable for Visual Flight Rules (VFR) operations.

TEMPO 18:00Z - 23:00Z
VFR
Visibility
>6SM
Weather
Light Showers Rain
Clouds
BKN040 BKN080
📖 Plain English Explanation:

Temporary conditions (lasting less than an hour at a time) may include: Visibility will be excellent at more than 6SM. Weather conditions: Light Showers Rain. Broken clouds at 4000 feet, Broken clouds at 8000 feet. Conditions will be suitable for Visual Flight Rules (VFR) operations.

PROB30 18:00Z - 23:00Z
IFR
Wind
VRB° at 20 kt
Gusts: 30 kt
Visibility
2SM
Weather
Thunderstorm Rain, Mist
Clouds
BKN015 OVC060CB
📖 Plain English Explanation:

There is a 30% probability of: Winds will be variable in direction at 20 kt. Gusts up to 30 kt are expected. Visibility will be moderate at 2SM. Weather conditions: Thunderstorm Rain, Mist. Broken clouds at 1500 feet, Overcast skies at 6000 feet. Instrument Flight Rules (IFR) conditions - instrument flying required.

FM050000 00:00Z - 06:00Z
MVFR
Wind
20° at 5 kt
Visibility
>6SM
Clouds
BKN015 OVC060
📖 Plain English Explanation:

Winds from the North-Northeast (20°) at 5 kt. Visibility will be excellent at more than 6SM. Broken clouds at 1500 feet, Overcast skies at 6000 feet. Marginal VFR conditions - some restrictions for visual flying.

TEMPO 00:00Z - 02:00Z
VFR
Clouds
SCT015 OVC060
📖 Plain English Explanation:

Temporary conditions (lasting less than an hour at a time) may include: Scattered clouds at 1500 feet, Overcast skies at 6000 feet. Conditions will be suitable for Visual Flight Rules (VFR) operations.

FM050200 02:00Z - 08:00Z
IFR
Wind
20° at 5 kt
Visibility
6SM
Weather
Mist
Clouds
SCT004 BKN010 OVC060
📖 Plain English Explanation:

Winds from the North-Northeast (20°) at 5 kt. Visibility will be excellent at 6SM. Weather conditions: Mist. Scattered clouds at 400 feet, Broken clouds at 1000 feet, Overcast skies at 6000 feet. Instrument Flight Rules (IFR) conditions - instrument flying required.

PROB30 02:00Z - 05:00Z
LIFR
Visibility
2SM
Weather
Light Drizzle, Mist
Clouds
OVC004
📖 Plain English Explanation:

There is a 30% probability of: Visibility will be moderate at 2SM. Weather conditions: Light Drizzle, Mist. Overcast skies at 400 feet. Low IFR conditions - challenging even for instrument operations.

FM050500 05:00Z - 11:00Z
LIFR
Wind
40° at 8 kt
Visibility
2SM
Weather
Mist
Clouds
OVC004
📖 Plain English Explanation:

Winds from the Northeast (40°) at 8 kt. Visibility will be moderate at 2SM. Weather conditions: Mist. Overcast skies at 400 feet. Low IFR conditions - challenging even for instrument operations.

PROB30 05:00Z - 14:00Z
LIFR
Visibility
1/4SM
Weather
Light Drizzle, Fog
Clouds
VV001
📖 Plain English Explanation:

There is a 30% probability of: Visibility will be moderate at 1/4SM. Weather conditions: Light Drizzle, Fog. Vertical visibility at 100 feet. Low IFR conditions - challenging even for instrument operations.

FM051400 14:00Z - 20:00Z
LIFR
Wind
40° at 10 kt
Visibility
>6SM
Clouds
BKN004 OVC015
📖 Plain English Explanation:

Winds from the Northeast (40°) at 10 kt. Visibility will be excellent at more than 6SM. Broken clouds at 400 feet, Overcast skies at 1500 feet. Low IFR conditions - challenging even for instrument operations.

FM051700 17:00Z - 23:00Z
MVFR
Wind
40° at 10 kt
Visibility
>6SM
Weather
FCST
Clouds
BKN015 OVC060
📖 Plain English Explanation:

Winds from the Northeast (40°) at 10 kt. Visibility will be excellent at more than 6SM. Weather conditions: FCST. Broken clouds at 1500 feet, Overcast skies at 6000 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.