1.   But the February performance was mostly a result of abnormal weather, economists said.

2.   The second explanation for the abnormal weather patterns applies to the Minnesota tornadoes, which stemmed from an entirely different set of meteorological events, Knight said.

3.   But meteorologists say El Nino, an abnormal weather pattern over the Pacific Ocean, has delayed the downpour.

4.   El Nino is an abnormal weather pattern occurring every two or five years over the Pacific Ocean.

5.   El Nino, an abnormal weather pattern over the Pacific Ocean, causes droughts in some areas and floods in other places worldwide.

6.   Forecaster Ludy Alviar said El Nino, an abnormal weather pattern over the Pacific Ocean, tends to reduce the number of typhoons that hit the Philippines.

7.   However, meteorologists say El Nino, an abnormal weather pattern over the Pacific Ocean, has triggered the worst drought in a half-century.

8.   However, the downpours have been delayed this year by El Nino, an abnormal weather pattern over the Pacific Ocean.

9.   However, meteorologists say El Nino, an abnormal weather pattern over the Pacific Ocean, has delayed the downpour.

10.   However, seasonal downpours have been delayed this year by El Nino, an abnormal weather pattern over the Pacific Ocean.