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October's El Niño Presentation (& Jan. 2016 update)

10/9/2015

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ICL's October meeting on 10/6 featured a timely presentation from Alexander Tardy of NOAA, who spoke about the expected effects on Southern California and the canyons from this year's large "El Nino".

This presentation and guests were arranged by ICL's Emergency Disaster Preparedness committee headed by Joanne Hubble. Our thanks to her for a great job. And also thanks to Mr. Tardy and the other guests listed below who attended to answer questions.

Click the "read more" link just below to view the rest of this post.
Picture
We had an overflow crowd and some people couldn't get in. Alex Tardy's slides are at the bottom of this post, and a video recording of his presentation is just below.
Our thanks to Dion Sorrell of Modjeska Canyon for making this video available to us.
(If you want to view it full-screen, click the "box" icon at the lower right of the video.)
The brief takeaway from the presentation:
  1. This summer’s rain and high humidity so far has been mostly from two warm-water ocean “blobs” off the pacific northwest, and not El Niño (also termed "ENSO"). ENSO is warm water event that happens much farther south in the equatorial regions off the west coast. See the slides below.
  2. El Niños affect our local weather mainly by redirecting the upper atmosphere's westerly jet stream, pulling a trough to the south and so redirecting the usual winter storm track down from the pacific northwest and Canada into California.
  3. The effects of an El Niño vary widely, but this year's El Niño is big, scoring at 2.5 on a scale of 3.0. So it is unlikely to be a "dud.” If it stays at 2.5, it will be the strongest on record for sea surface temperatures in the equatorial pacific.
  4. El Niño usually results in a cooler and longer rainy season, possibly extending through May. This one will produce more storms and/or more intense storms. But whether any particular storm will be unusually intense is not known. And the rain rates this year also may be enhanced by our unusually warm coastal waters.
But The Most Important Of All...
Because of these uncertainties, if you live in the canyons you
must be prepared to deal with extensive rainfall this winter and spring, however and whenever it arrives.

ICL Emergency Disaster Preparedness Committee:
Joanne Hubble
For Questions, Contact jahubble@occoxmail.com


Guest Speaker From NOAA:

Alexander Tardy
Warning Coordination Meteorologist
U.S. National Oceanic & Atmospheric Administration


ICL's Other Invited Guests:
U.S. Forest Service:
    
Darrell Vance: District Ranger, Cleveland National Forest
Orange County Parks:
    
John Gannaway: O.C. Parks Division #1 Manager
Orange County Animal Care:
    
Katie Ingram: Administrative Manager
    Dr. Jennifer Hawkins: Director of O.C. Animal Care
Orange County Sheriff’s:
    
Victoria Osborn: Assistant Manager
Orange County Fire Authority:
    
Brian Norton: Battalion Chief
Orange County Public Works:
    Kevin Onuma: Deputy Director of Operations & Maintenance
A.J. Jaime: Manager of Operations & Maintenance
    Raymond Sanchez: Canyon Area Inspector
Irvine Ranch Water District:
    Matthew Veeh: Public Affairs Manager
    Tom Roberts: Assistant Director of Water Operations
American Red Cross:
    Sean Ward: Disaster Program Manager

Alex Tardy's Presentation Slides

An Adobe Acrobat version of Alex Tardy's presentation.
Click the rectangle at the lower left to view it full-screen.
​If you want to download the PDF to your device, use the link to the right.
NOAA 2015 PDF
File Size: 6140 kb
File Type: pdf
Download File


We've updated this blog post on Jan 8th, 2016 with Alex Tardy's Jan 4th, 2016 forecast update video on the El Niño storms.
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