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Monthly Weather Summary

NATIONAL METEOROLOGICAL SERVICE OF BELIZE

 


 

 

Month:

August, 2014


 

Climate statistics show that the main weather features that affect the country of Belize during August are tropical waves, Tropical Upper Tropospheric Troughs (TUTTs) and an occasional tropical cyclone. The month of August is also characterized by a two-week dry spell referred to locally as the ‘Maga Season’. August 2014  saw the passage of six tropical waves. Most of these waves were weak except for the last wave which crossed on the final day of the month. No tropical cyclone affected the country during August this year.

 

The first four days of the month were mostly dry as a slack pressure pattern over the area produced a relatively dry and weak east to southeasterly airflow. Winds backed up to the east on the 5th and conditions became a bit more moist. This was mostly in response to a TUTT which was producing weak divergence aloft. Fair and mostly dry conditions returned the following day and lasted until the 9th.

 

The first tropical wave for August crossed on the 9th causing conditions to become relatively moist. This resulted in a few showers and thunderstorms across the country. Moist conditions persisted on the 10th as another tropical wave was approaching. This second wave crossed late on the  11th resulting in few more showers and thunderstorms. Moisture remained high on the 12th with a few showers and thunderstorms developing mainly inland.

 

Atmospheric moisture decreased significantly on the 13th resulting in a sunny and warm day over the country.

 

The third tropical wave for August crossed on the 14th.  This wave was enhanced by a TUTT over the northwest Caribbean and produced another increase in showers and thunderstorms over Belize. This increase in moisture was short-lived as fair conditions returned on the 15th. An upper ridge over the southwest Caribbean helped to produce a divergent southerly airflow on the 16th. The result was a few showers and thunderstorms developing across the country that day. Moisture decreased the following day and the 17th and 18th were mainly warm and fair across Belize.

 

The fourth Tropical wave for August 2014 crossed on the 19th causing another weak surge in moisture. Upper level conditions were not supportive with this wave and a few showers and thunderstorms in the morning decreased by the afternoon. The following two days (20th and 21st) were mostly dry. Moisture increased a bit more on the 22nd as broad trofing developed over the Northwest Caribbean in response to Cristobal.  A broad low pressure system later developed over the northwest Caribbean. The result was a slack pressure pattern with relatively light winds and mainly fair weather until the 28th.On the 28th the fifth tropical wave for the month of August crossed Belize. As with most of the other waves, this was also a relatively weak wave. It only produced a few showers and isolated thunderstorms mainly along the coast during the morning and inland later in the day. The 29th was mainly fair.

 

Conditions became increasingly moist on the 30th as an active wave approached the area. This tropical wave which was being monitored for signs of development crossed Belize on the 31st. It did not develop before crossing Belize and the Yucatan  producing some showers, thunderstorms and periods of rain especially in the North.

 

Although the last day of the month  was wet,  August 2014 was dry compared to climatology (See Table 1). The maga season was not evident given the overall dry pattern that prevailed for most of the month. Table 1 summarizes the rainfall totals for August 2014 compared to average for some selected stations across the country. As shown, most of the stations recorded Below normal rainfall.

 

Stations

August 2014 Rainfall (mm)

August Average rainfall (mm) 1981-2010

Analysis

Airport

85.5

145.9-201.6

Below Normal

Punta Gorda

648.7

517.7-709.6

Normal

Belmopan

NA

193.2-282.6

NA

Tower Hill

NA

160.1-191.0

NA

Libertad

110.7

117.7-175.7

Below Normal

Savannah

103.1

311.4-398.5

Below Normal

Central Farm

51.6

126.2-203.0

Below Normal

Melinda

161.3

218.7-241.7

Below Normal

Belize Zoo

118.0

175.7-268.3

Below Normal

Pomona

207.4

239.6-324.7

Below Normal

 

 

       


Forecaster:

R. Gordon