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The Australian Bureau of Meteorology has recorded a decline in water temperature in the tropical Pacific Ocean. Accordingly, models indicate the chance of a La Nina increasing from “neutral” to “watch”.
During a La Nina event tradewinds intensify across the Pacific from east to west. Climatic changes include:
- Above average rains in Australia and Southeast Asia
- Drier weather in the south of the U.S. and cooler temperatures and heavy rains in the Pacific Northwest due to a shift in the jet stream
- Drought in Southern Brazil depressing soybean yields
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Developing La Nina Event |
The U.S. National Weather Service considers that there is an equal chance of neutrality between a La Nina and an El Nino event. Water temperatures along the Pacific coastline will indicate the direction in which the El Nino-Southern Oscillation is developing.
Subscribers are referred to previous post on climastic cycles in the Pacific. Enter El Nino in the SEARCH feature.