Heat Advisory Update

 
The National Weather Service change the EXCESSIVE HEAT ADVISORY to a HEAT ADVISORY. 

It will still be hot, just not warm enough and long enough for what the National Weather Service considers excessive.  You still need to be careful and give the heat its proper respect around the Bay and into our Inland valleys today through Wednesday but especially tomorrow. 

Biggest Temperature Jump Today

 

It won't be too hard to feel the new heat today.  Our afternoons highs will be 10 - 20° warmer than yesterday.

We will be near record high temperatures around the Bay today.  Tomorrow will be the hottest afternoon and the one most likely to set a few record highs. 

RECORD HIGHS FOR TODAY - MONDAY, AUGUST 23rd:
CONCORD - 94°  in 2005
GILROY  - 103° in 1999
HAYWARD - 79°  in 2003
HOLLISTER - 102°  in 1931
LIVERMORE - 109°  in 1913
KENTFIELD - 101°  in 1931
MOFFETT FIELD - 92°  in 1992
NAPA  - 104°  in 1931
OAKLAND - 90°  in 1971
RICHMOND - 94°  in 1978
SALINAS ARPT - 84°  in 1968
SAN FRANCISCO - 89°  in 1931
SFO AIRPORT - 91°  in 1959
SAN JOSE - 98°  in 1931
SANTA ROSA - 102°  in 1931
SAN RAFAEL - 94°  in 1979

Mini-Heat Wave Today - Wednesday

Summer heat and poor air quality return to our neighborhoods today through Wednesday. 

 
High pressure over the Pacific Northwest reverses the cooling sea breeze that dominated the rest or our summer. 

High pressure puts a lid on the atmosphere.  The sinking air traps our pollution near the ground.  The sinking air along with the loss of venting our air into the Central Valley creates unhealthy conditions around the Bay. 

The heat peaks Tuesday with the warmest weather of the year.  Below is a list of our warmest temperatures and the day we experienced them this year.  

HAYWARD - 92° on June 12th
MOFFETT FIELD  - 90° on June 12th
MONTEREY  - 79° on June 12th 
NAPA    - 92° on June 12th
OAKLAND  - 90° on June 12th
SALINAS AIRPORT   - 87° on June 12th
SAN FRANCISCO  - 87° on June 12th 
SFO AIRPORT  - 88° on June 12th
SAN JOSE  - 92° on June 12th  
WATSONVILLE   - 91° on June 12th

CONCORD   - 101° on June 27th
LIVERMORE   - 102 on June 27th
SANTA ROSA  - 92° on June 27th   

Coolest August in San Jose

More proof we are living through a historically cool summer, especially August in San Jose.

 

Any Summer Weather for August?

Mike:

When you look at the long range forecast model – do you see any warm weather for August? I have a strange feeling we won’t get any summer weather until Indian Summer time in September or October and then it will be short lived…

I think we should re-name San Jose to Salinas this summer…

Thanks,

Bob McTighe

 

Hi Mr. McTighe,

Great question and a topic I'm hearing more and more people talk about. 

The Climate Prediction Center issues an 8-14 day outlook and it's not going to please those looking for summer heat.

 
We have a better than average chance of seeing below normal temperatures through August 31.  For a detailed description of the above graphic please read this. 

 

The persistent and unusually placed jet stream is steering a cooler than average airmass form the ocean over the Coast and Bay Area.  This stronger than average onshore wind gets its chill from the ocean water, water temperature in the 50s.  During a typical summer, the jet stream would travel closer to the U.S./Canadian border. 
  

  

Touring Our Studio For Charity

Yesterday Bob DuBridge brought his daughters Emma, Tara and Cynthia along with two of their friends Audrey Weers and Eden Hagen. 

Mr. DuBridge was kind enough to bid on the tour at an auction benefiting Central Elementary School in Belmont.

 
Watching the Midday Show.

After the Show, Cheryl Jennings and Kristen Sze show and tell about their jobs.

 
 
Best part of tour - playing weather person.

 
 Watching Cheryl Jennings anchor our web-cast.

 
Happy tour ending.

Thank you for visiting us and supporting Central Elementary School.

Mike  
  
  
  
  
  
  
  

   

   

Perfect Pet - August 13th

 
IZZY

Izzy’s the one you’ll want to be with when you crave a friendly companion by your side. Our 10-year-old neutered male terrier mix will amuse you with his funny cockeyed teeth (but rest assured his teeth have been given a healthy stamp of approval by a veterinarian). Izzy is sweet and attentive, but undemanding. He may be 10, but like any youngster Izzy has plenty of bounce, spunk and fun in him. On weekend hikes with our volunteers, Izzy has no trouble keep up with the younger shelter dogs. Visit Izzy at the Marin Humane Society and see why he’s the perfect companion! You can also watch Izzy in action on-line: http://www.youtube.com/watch?v=QBHGQkqaxMs

For more information about Izzy or any adoption animals at the Marin Humane Society, call the Adoption Center at 415.506.6225.

 

Perseid's Meteor Shower

 
It's that time of the year again and tonight is the climax.  The annual Perseid's meteor shower, one the most consistent celestial shows, will shower the night sky with up to 100 meteors per hour. 

Earth is passing through the grit from the Comet Swift-Tuttle.  The bright meteor streaks develop as the 140,000 mph grit/meteors burn in the upper atmosphere. 

It is called the Perseid's because they appear to stream from the direction of the constellation of Perseus but in fact can appear in any part of the sky.  Look to the northeast as darkness falls tonight and follow the streaks as they climb steadily through the night sky.   

For Bay Area watching you will need to get above the returning marine layer clouds, about 2000 feet.  The best viewing areas are most likely to be Mt. Diablo, Mt. Hamilton, the Santa Cruz Mountains, Briones Regional Park in Contra Costa County, Henry Coe State Park in the South Bay and possibly Mt. Tamalpias and around Sonoma.

If you capture any meteors, we would love to see them.  You can e-mail pictures to uReport@kgo-tv.com and upload video to uReport.abc7news.com.

Good luck tonight. 

My View

 
This is a picture I took at 11 AM from my desk.  We are looking southeast down the Embarcadero in Downtown San Francisco with the Bay Bridge in the background.  It's another gray morning, but I do see some breaks in the clouds by AT&T Park.  The sun comes out just in time for the Giants/Cubs game at 12:45 PM. 

ABC7News Tower Cams

   

Rain & Drizzle, What's the Difference?

Crazy weather in San Francisco yesterday afternoon.  We had a burst of drizzle that our wind moved sideways.  The intensity caught a few people off-guard.  Officially, nothing landed in a rain gauge.

Today's Forecast

We use size to differentiate drizzle from rain and even cloud droplets.

Cloud Droplets - Microscopic water droplets whose average size is 10-15 microns.  A micron (micrometer) is one-thousandth of a millimeter or one-millionth of a meter.  Individual drops within a cloud can range from 1 to 100 microns in size.  Cloud droplets are 10 to 1000 times smaller than raindrops.  It takes billions of droplets to make a cloud.

Drizzle - Small, slowly falling water droplets, with diameters between .2 and .5 millimeters.

Rain - Water droplets having diameters greater than drizzle (0.5 mm).