El Nino and Central Florida Weather
El Nino <ul><li>El Nino is a warming of the eastern tropical Pacific Ocean. </li></ul><ul><li>El Nino events average 1-3 y...
 
What do we already know? <ul><li>We stated that El Nino affects hurricane development. </li></ul><ul><ul><li>High level wi...
 
What do we already know? <ul><li>According to the Investigate activity how does El Nino affect Florida’s: </li></ul><ul><u...
Is that all there is? End of investigation? <ul><li>No, let’s look deeper. </li></ul><ul><li>Research by Bartlett Hagemeye...
Why Tornadoes? <ul><li>Upper level jet stream moving at 100+ mph travels west to east across the state </li></ul><ul><li>A...
What should we do? <ul><li>Preparedness </li></ul><ul><li>Prediction </li></ul><ul><li>Warning </li></ul>
Temperature variations <ul><li>What do other studies show about temperature changes during El Nino? </li></ul><ul><li>(-)2...
More about precipitation <ul><li>During El Nino winter precipitation may exceed normal by 30% </li></ul><ul><li>What affec...
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El Nino And Central Florida Weather

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El Nino And Central Florida Weather

  1. 1. El Nino and Central Florida Weather
  2. 2. El Nino <ul><li>El Nino is a warming of the eastern tropical Pacific Ocean. </li></ul><ul><li>El Nino events average 1-3 years long </li></ul><ul><li>El Nino events occur about every 5-10 years </li></ul><ul><li>El Nino affects weather around the globe </li></ul>
  3. 4. What do we already know? <ul><li>We stated that El Nino affects hurricane development. </li></ul><ul><ul><li>High level winds cause wind shear and limit development of hurricanes </li></ul></ul><ul><li>This is caused by movement of the jet streams </li></ul><ul><ul><li>Upper level jet streams (30,000 Feet +) have moved South across the US </li></ul></ul>
  4. 6. What do we already know? <ul><li>According to the Investigate activity how does El Nino affect Florida’s: </li></ul><ul><ul><li>Temperatures (October to March 1982-83 El Nino) </li></ul></ul><ul><ul><ul><li>No noticeable change </li></ul></ul></ul><ul><ul><li>Precipitation </li></ul></ul><ul><ul><ul><li>Increased by 10 inches </li></ul></ul></ul>
  5. 7. Is that all there is? End of investigation? <ul><li>No, let’s look deeper. </li></ul><ul><li>Research by Bartlett Hagemeyer, National Weather Service Melbourne Fl. “Significant extratropical tornado occurrences in Florida during strong El Nino and strong La Nina events” </li></ul><ul><ul><li>This study found a high correlation between strong El Nino events and development of tornadoes in Florida particularly during January - April </li></ul></ul>
  6. 8. Why Tornadoes? <ul><li>Upper level jet stream moving at 100+ mph travels west to east across the state </li></ul><ul><li>A low pressure system in the Gulf draws lower level air northward over Florida </li></ul><ul><li>If the low level winds build this may cause a “crossing” of the winds triggering tornado outbreaks </li></ul>
  7. 9. What should we do? <ul><li>Preparedness </li></ul><ul><li>Prediction </li></ul><ul><li>Warning </li></ul>
  8. 10. Temperature variations <ul><li>What do other studies show about temperature changes during El Nino? </li></ul><ul><li>(-)2-3 °F change during winter months </li></ul><ul><li>What does that make our overnight low temperature? </li></ul><ul><li>What affect might that have? </li></ul>
  9. 11. More about precipitation <ul><li>During El Nino winter precipitation may exceed normal by 30% </li></ul><ul><li>What affects might this have on </li></ul><ul><ul><li>Lake/aquifer levels </li></ul></ul><ul><ul><li>Fire season </li></ul></ul><ul><ul><li>Beef cattle production </li></ul></ul><ul><ul><li>Agriculture </li></ul></ul><ul><ul><li>Tourism </li></ul></ul>

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