IMPACTS OF 2012 HURRICANE IMPACTS OF 2012 HURRICANE SEASON ON TRINIDAD AND SEASON ON TRINIDAD AND

TOBAGO.TOBAGO.

Marlon Noel - Director (Ag).Marlon Noel - Director (Ag).Trinidad and Tobago Meteorological Service.Trinidad and Tobago Meteorological Service.

DYNAMICS

TROPICAL WAVES AND THE INTER-TROPICAL CONVERGENCE ZONE - WITH SUPPORT AT TIMES FROM UPPER-LEVEL TROUGHS, WERE THE MAIN IMPACTS ON T&T WEATHER DURING THE 2012 HURRICANE SEASON.

DYNAMICS

• IN THE ABSENCE OF SYNOPTIC-TYPE (SCALE) WEATHER SYSTEMS, LOCAL EFFECTS TOOK OVER.

• THIS TOOK THE FORM OF AFTERNOON THUNDERSTORMS WHICH WERE SEA-BREEZE INDUCED OFTEN RESULTING IN SHORT-LIVED FLASH FLOODS EVENTS IN THE CAPITAL CITY.

• AUGUST TO OCTOBER WAS THE FAVOURED PERIOD.

2012 HURRICANE SEASON IMPACTS.

• T & T IMPACTED BY ‘ROUTINE’ HURRICANE SEASON TYPE WEATHER SYSTEMS (NON-ROTATING) CAN BE TERMED AS BEING NORMAL.

• APART FROM JUNE, MONTHLY RAINFALL ACCUMULATIONS WERE BELOW AVERAGE.

2012 HURRICANE SEASON IMPACTS.

• EXTENSIVE RIVERINE FLOODING – 13th JUNE, RAINFALL ACTIVITY ASSOCIATED WITH THE ITCZ.

• ITCZ INDUCED MODERATE TO HEAVY PERSISTENT SHOWERS AFFECTED T&T FROM 10th – 13th OCTOBER

• 147.2 MM MEASURED AT PIARCO, TRINIDAD. LONG TERM AVERAGE FOR JUNE – 252.1 MM.

2012 HURRICANE SEASON IMPACTS.

• 1111thth AUGUST - DISASTROUS FLOODING/LANDSLIDE AUGUST - DISASTROUS FLOODING/LANDSLIDE EVENT IN NW AREAS OF TRINIDAD VIZ. DIEGO EVENT IN NW AREAS OF TRINIDAD VIZ. DIEGO MARTIN AND MARAVALMARTIN AND MARAVAL

• ACTIVE ITCZ MODULATED BY TD#7 WHICH LATER ACTIVE ITCZ MODULATED BY TD#7 WHICH LATER DEGENERATED INTO A TW.DEGENERATED INTO A TW.

• Two (2) Deaths - Solomon Britto of Richplain and Two (2) Deaths - Solomon Britto of Richplain and Everald Bentham, of Upper La Puerta, were both Everald Bentham, of Upper La Puerta, were both killed when they were caught in their homes by killed when they were caught in their homes by raging floodwaters, laden with sediment. raging floodwaters, laden with sediment.

• DAMAGES EXCEEDEDDAMAGES EXCEEDED 200 MILLION TT 200 MILLION TT DOLLARS.DOLLARS.

FLOODING – 11FLOODING – 11THTH AUGUST IN DEIGO MARTIN. AUGUST IN DEIGO MARTIN.

LANDSLIDE – 11LANDSLIDE – 11THTH AUGUST IN DEIGO AUGUST IN DEIGO MARTIN.MARTIN.

FLOODING – 11FLOODING – 11THTH AUGUST IN DEIGO MARTIN. AUGUST IN DEIGO MARTIN.

2012 HURRICANE SEASON IMPACTS.

• EXTENSIVE STREET/FLASH & RIVERINE FLOODING – 23rd AUGUST. RAINFALL ACTIVITY ASSOCIATED WITH FEEDER BAND ACTIVITY FROM TS ISSAC.

• WIDESPREAD WIDESPREAD SHOWERS/THUNDERSHOWERS ASSOC SHOWERS/THUNDERSHOWERS ASSOC WITH ITCZ AND PASSAGE OF TWs WITH ITCZ AND PASSAGE OF TWs PRODUCED FLASH FLOODING ON 23rd AND PRODUCED FLASH FLOODING ON 23rd AND 3030thth SEPTEMBER. SEPTEMBER.

FLOODING AT CITY GATE, PORT OF SPAIN – 23FLOODING AT CITY GATE, PORT OF SPAIN – 23RDRD AUGUST. AUGUST.

2012 HURRICANE SEASON IMPACTS.

• RAINBANDS ASSOCIATED WITH TROPICAL RAINBANDS ASSOCIATED WITH TROPICAL STORM RAPHAEL PRODUCED WIDESPREAD STORM RAPHAEL PRODUCED WIDESPREAD RAINFALL AND FLOODING IN SOME AREAS RAINFALL AND FLOODING IN SOME AREAS 1212thth – 14 – 14thth OCTOBER. OCTOBER.

• RAINFALL MEASURED AT PIARCO, RAINFALL MEASURED AT PIARCO, TRINIDAD OVER 12TRINIDAD OVER 12thth – 14 – 14thth : 52.3 MM : 52.3 MM..

• Widespread Flooding in Port of Spain Widespread Flooding in Port of Spain – 08– 08thth November 2012 – ITCZ induced November 2012 – ITCZ induced Rainfall.Rainfall.

Flooding in Port of Spain – 08Flooding in Port of Spain – 08thth November November 2012. 2012.

2012 HURRICANE SEASON IMPACTS.

• APART FROM DISASTROUS APART FROM DISASTROUS FLOODING/LANDSLIDE EVENT ON FLOODING/LANDSLIDE EVENT ON 1111thth AUGUST, THERE WERE NO AUGUST, THERE WERE NO MAJOR IMPACTS.MAJOR IMPACTS.

• OTHER IMPACTS WERE CONSIDERED TYPICAL OR NORMAL DURING A HURRICANE SEASON.

2012 HURRICANE SEASON IMPACTS.BULLETINS/ADVISORIES/WARNINGS ISSUED BY THE TTMS.

• 55 General Information Bulletins.55 General Information Bulletins.

• 5 ITCZ Events.5 ITCZ Events.

• 8 Tropical Wave Passage.8 Tropical Wave Passage.

• 5 Flood Events (Includes Riverine Flooding).5 Flood Events (Includes Riverine Flooding).

• 7 Information Bulletins (Info Only) on TS’s.7 Information Bulletins (Info Only) on TS’s.

• 7 Information Bulletins (Info Only) on TD’s.7 Information Bulletins (Info Only) on TD’s.

• 9 Daytime Heating/Showers events.9 Daytime Heating/Showers events.

FLOODING AT CITY GATE, PORT OF SPAIN – 23FLOODING AT CITY GATE, PORT OF SPAIN – 23RDRD AUGUST. AUGUST.

Thank You.Thank You.