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Joined: Oct 1999
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Marty Offline OP
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Belize Weather Forecast: July 20, 2021

General Situation:
Ambergris Caye: Conditions this morning by Elbert just before or after this post!
Belize NMS: Present Condition: Mostly cloudy throughout the country this morning, including San Pedro. A relatively moist airflow dominates our weather.
Advisories: None.
24-hour forecast: Sunny skies today with cloudy spells. Tonight skies will be cloudy. A few out breaks of showers and isolated thunderstorms will develop over most areas, but more so along the coast this morning, then decreasing by afternoon. Tonight and tomorrow expect a few showers and isolated thunderstorms to develop mainly along the coast and this will be associated with the passage of a tropical wave.
Winds: E, 5-15 kts
Sea State: Light Chop
Waves: 2-4 ft
Sea Surface Temperature (°f): 86
Outlook: For Wednesday and Wednesday and night is for cloudy spells with a few showers and isolated thunderstorms mainly south and coast.
Sargassum Forecast from July 16 to July 21: There is the chance that few sargassum mats could affect beaches, particularly in the northern parts of the country during the next few days. San Pedro has a medium probability and a moderate impact.
Tropical Weather Outlook: Tropical cyclone formation is not expected in the North Atlantic, the Caribbean Sea or the Gulf of Mexico within the next 48 hours. Click for more...

Marine Conditions:

The Caribbean Sea

There are three tropical waves moving across the basin.

Please refer to the section above for details on the tropical wave moving across the basin.

Over the southwest Caribbean, the monsoon trough extends along 10N between 76W-83W. Scattered moderate convection is noted along the trough mainly south of 10N. Scatterometer data depicts fresh to strong trades prevailing across the south central portion of the basin south of 18N between 70W-82W, while gentle to moderate trades prevail elsewhere.

The Bermuda High north of the area combined with low pressure N Colombia will continue to support fresh to strong NE to E winds over the central Caribbean through most of the week. Expect an increase in areal coverage of strong wind speeds through Wed night, reaching as far north as Hispaniola adjacent waters. Winds near the coast of NE Colombia and the Gulf of Venezuela will pulse to near-gale force at times, through Thu morning. Fresh to strong E winds will occur in the afternoons and early evenings in the Windward Passage through midweek. Fresh to strong winds are expected to pulse in the Gulf of Honduras Wed night and Thu night. No tropical cyclone activity is expected through the week.

  High Low
Coastal 31° C
87° F
26° C
79° F
Inland 34° C
93° F
23° C
73° F
Hills 28° C
82° F
19° C
66° F
High: 5:56 AM Low: 1:34 PM
High: 8:22 PM Low: 12:26 AM (Wed)
Sunrise: 5:28 AM Moonrise: 3:22 PM
Sunset: 6:29 PM Moonset: 2:44 AM (Wed)

Four Day Weather Outlook:

For more information, check the Daily Tropical Weather Outlook.

Climate Prediction Center's Central America Hazards Outlook

Belize National Emergency Management Organization (NEMO)

Ambergris Caye:

Philip S W Goldson International Airport:


Caye Caulker:

For the North Atlantic...Caribbean Sea and the Gulf of Mexico:

Tropical development is not anticipated through at least the end of this week, mainly due to a broad area of Saharan dust over much of the Atlantic basin.

There are a few waves moving westward through the basin, but none of those waves show any signs of organizing.

For further information on tropical conditions, check the daily Tropical Weather Outlook, click here.

Joined: Oct 1999
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Marty Offline OP
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The Medden Julian Oscillation's wet phase should be found penetrating over the Atlantic region July 27th-August 2th. It will bring with it a wetter environment and low atmospheric pressure, which will make it much easier for disturbances to develop to possible cyclones.

The Medden Julian Oscillation( MJO) is a wave or areas of low pressures that travel the world between 30 days, MJO moves from West to East at a speed of 14 to 29 KMH, has greater effect on warm waters, For this reason, when this phenomenon reaches the Atlantic in the next few days cyclonic activity is expected to start increasing. This phenomenon was discovered by scientists Roland Madden and Paul Julian in 1971.

Tropical wave over the Caribbean.

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Joined: Dec 2006
Posts: 13,675
On Ambergris Caye this morning we have a 12 mph wind from the East with clear sky and a calm sea around our barrier reef. Today's expected high temperature is set at 87 f.


White Sands Dive Shop
Joined: Oct 1999
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Marty Offline OP
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That next wave of rain clouds, a mixture of easterly Caribbean winds and high level from the NW arrived during the night and is now resulting in areas of rain all over the western Caribbean and Belize

Looks as if it will be mainly cloudy, with significant rain showers from time to time, and patches of sunshine.

Could be continuing with on and off rain showers

Some rain showers may well still be will us on Wednesday morning.

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Temperatures in Belmopan : ( Coast usually cooler, hills even cooler )
Last Night 25°C 78°F Yesterday max. 32°C 89°F Yesterday Rain 1.2 mm ( 0.05") Over Night Rain 5.8 mm ( 0.2" )

Joined: Oct 1999
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Marty Offline OP
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Present Condition: Mostly cloudy, rain in the central regions. Clear and windy in San Pedro. A tropical wave is affecting the country. Small craft caution for gusty winds and locally rough seas near heavy showers and thunderstorms.

24hr Forecast: Cloudy at times with showers and thunderstorms over most areas but especially inland and north this afternoon then over the south and coast tonight and tomorrow morning.

Outlook: A few showers and isolated thunderstorms will continue across the country Wednesday afternoon then mainly over southern districts Wednesday night and Thursday morning.

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Joined: Oct 1999
Posts: 84,392
Marty Offline OP
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Rain squall on Ambergris Caye

Being creative on space - roof laundry. Photo by Tacogirl

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Before the rain this Tuesday afternoon in Corozal. Photo by Belize Scoop Blogger

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