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December 2007

December 31, 2007

Weather Story of the Year

Lorie_mike_and_beck_tucson_2First, let's talk about our local memorable weather this year.  I think it may be a toss up between the snow that fell in late January and the monsoon. 

I picked the snow because it really did shut down southern Arizona for at least a day, more is some areas.  We received over 1000 e-mails from viewers with at least one photo attached.  It was a great day but many people just didn't go out or couldn't leave their home!  I know some cities and towns at higher elevations just waited for the snow to melt rather than risk allowing workers out on the road.  It was an extra and welcome holiday for many people.   Oscar_herrera_bisbee_4

These are just a few photos that you sent in.  The first one is, of course, a snow covered car in Tucson.  The second is from Bisbee.  It was an unusually picturesque morning all around!

The other top weather story is this year's Monsoon with July being the month with the most action.  Microbursts were a big part of the Monsoon this year.  There was quite a bit of damage across southern AZ.  One microburst on July 18th knocked down over 100 large trees at the Oro Valley Country Club. There were a lot of reports of smaller trees and roofs damage at homes as well. 

Sherrymaher_sierravista_2Another unusual weather phenomenon about this monsoon...funnel clouds!  Southern Arizona rarely sees these forces of nature.  Fortunately for us, tornadoes are rare. Even when they do form, the tornadoes are usually weak. Funnel clouds are rotating columns air,extending from the base of the cloud, but not making contact with the ground.  After talking with the National Weather Service earlier this year, it is unclear if the funnel clouds were more prevalent this year because of extreme conditions or if digital photography and the ease of quickly informing weather teams like ours through e-mail is the reason for increased reports of funnel clouds. 

Another big local story is the 37 days of 100 degree or higher temperatures in Tucson.  That is 2 days shy of the record 39 days.  And this year is the 7th year in a row with below average rainfall.  It is also the 9th year in the row with above average temperatures.  During the monsoon, a flash flood in Bear Canyon swept away hikers. Two hikers never made it out of the canyon alive. They were killed while trying to rescue others. 

Nationally the two major weather stories that I picked are the tornado that pretty much wiped Greensburg, Kansas off the map and the extreme drought in the southeast.  23drought600_2

The drought in the southeast is just downright bad.  That's really the best way to describe it.  Check out the photo at left.  Many docks at Lake Lanier, the major water source for the city of Atlanta, now lead to dirt and mud.  It is the second driest year on record for Atlanta with 31.85" of rain. That is 18.21" of rain less than their yearly average. The driest year on record was 1954 with 31.80" of rain.  But keep in mind, the population of metro Atlanta is about 5.3 million.  In the mid-1950s the population was a little over a million.  Some smaller towns in the south did run out of water earlier this year.  A few had to truck in water for their residents.  And major cities like Atlanta and Raleigh are down to about 90 days of water left.  As they get winter rains there is some relief but one more dry year like this one could mean a major water crisis for the southeast. 

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Check out this photo at left.  This is what's left of Greensburg, Kansas after an F5 tornado hit the town on May 4th. The last F5 on record was almost exactly 8 years earlier in Oklahoma.  10 people were killed in the town, 12 overall from the massive tornado.  About 95% of the town's buildings, homes, and businesses were destroyed.  Although the material things were wiped out, the spirit of Greensburg's residents was not.  Many are coming back to rebuild.  Greensburg is even becoming a "green" city.  You can check out what they are doing to make this happen at Greensburg Green Town.

I picked the two national stories because of how historic the events were or are in the case of the southeast drought.  Another big event was the southern Plains and Texas flooding this summer.  In a matter of a few weeks, that area was inundated by feet of rain!  After a long-term drought, the rain was welcome but they didn't need it all at one time.  The wildfires in southern California grabbed headlines at the end of October.  About 1500 homes were destroyed and nine people died.

Do you agree or disagree with my picks?  Let me know...leave a comment telling me why you think these are the top weather stories of the year or let me know if you think another story should have made the list.  Have a safe New Year's Eve! - First Alert Meteorologist Erin Jordan

December 28, 2007

Friday Morning Lows

Tombstone: 23°

UofA: 26°

Davis Monthan: 26°

Kitt Peak: 17°

Desert Museum: 27°

McNary (White Mtns.): -2°

Greer (White Mtns.): 4°

Show Low (White Mtns.): 8°

Grand Canyon (South Rim): 3°

Flagstaff: 2°

Tucson Int'l. Airport: 25°

Ajo: 32°

Mt. Lemmon: 7°

Elgin: 14°

Safford: 19°

Nogales: 18°

Willcox: 14°

Sierra Vista: 19°

Bisbee: 17°

Douglas: 12°

 

Coldest Yet This Winter!

ColdToday was cold but it could have been worse!  Tucson had a morning low of 25 degrees.  Douglas had a morning low of 12 degrees .  What was the temperature at your home?  Leave us a comment below to tells us how cold it got where you live. 

And check out some of these cold weather facts I dug up for you.  At least we didn't break our record low of 18 degrees.  And I hope we don't ever see our all time record low of 6 degrees in Tucson ever again!  6 degrees reminds me too much of those cold winter nights in Minnesota. 

The temperatures do warm up step by step right through the weekend. So for now...Saturday morning is the last day of 20s in Tucson for a little while.

Stay safe this long holiday weekend! - First Alert Meteorologist Erin Jordan

December 27, 2007

Hard Freeze Means You Need To Take Precautions

Friday morning could be the coldest morning yet this season!  I know there have been isolated reports of pipes bursting already but this widespread cold snap Thursday night into Friday morning may damage a lot of homes if people don't prepare.  I have some tips below to help you get through the winter chill but I know I haven't covered everything!  So please add your comments and tips.  And if your pipes freeze or burst, call a plumber immediately.  Better to get it taken care of quickly and minimize damage. - First Alert Meteorologist Erin Jordan

PROTECTING PIPES

  • Insulate exposed pipes.  These are the pipes that come out of the ground and go into your house.  Wrap them with old towels and tape the towels in place.  You can also buy insulation that fits around the pipe.  However, I have this on my own pipes at home and they still froze last year.  That is because there are some gaps in the insulation.  It doesn't fit perfectly around the joints.  You may want to wrap towels on any exposed areas just in case. 
  • Drip your outdoor water tap.  This keeps the water moving and moving water freezes slower than water stilling still.
  • Drip an indoor water tap the farthest away from where the water comes into the house.  By doing this you are moving water through most of the pipes in the house.
  • Open the inside door to the garage to circulate warm air into that part of the house.  Many of us have the pipes installed through the garage wall and then into the house.  The garage is not heated so by opening the door and allowing heat to escape into the garage, the walls and pipes inside them remain a bit warmer.
  • Open cabinets below sinks if they are located on an outside wall.  By doing this the warm air circulates through the cabinet and keeps that outside wall, where the pipes are located, a bit warmer than it would be if the cabinet was closed off from the warm air in the house. 

SWAMP COOLERS

  • Drain the pump.
  • Clear out any debris.
  • Disconnect the water line before the first freeze. If you don't do this, the water left in the line could freeze and burst the line.  This could cause some major damage. 
  • Cover your swamp cooler to prevent winter drafts. 
  • Turn off the circuit breaker.

PLANTS

  • Keep cold-sensitive plants covered.  At this point, if you haven't covered them, don't worry about it.  The spring and summer growth has probably already died off.  But keep that growth on there because that dead leaves and branches insulates the layers below and keeps them from being damaged by other freezes. 
  • Cover fruit trees.  Some fruit trees have done OK with the weather so far.  But with the very cold temperatures you may want to throw a sheet over the tree if you don't see any damage.  If there is damage just let the tree be and cut off the dead limbs in the spring.  The tree will probably not bear fruit next year but it should survive. 
  • Cover cactus tips with Styrofoam cups.  This insulates the tip of the cactus, which is where new growth generally occurs.  Most cacti of southern Arizona is used to the cold.  However, with hard freezes, damage can occur easier. 

PETS

  • Pets need to be inside!  That fur can only do so much when temps drop below 40 degrees!  If you have an outdoor only dog, make sure the doghouse is protected from the wind and has plenty of warm blankets for the pup to tunnel into.  Puppies and elderly dogs are more sensitive to the cold.  And dogs that are ill should definitely be treated to a warmer room during this cold snap. 
  • Bang loudly on the car hood before starting if up if you park outside.  Outdoor cats sometimes crawl into engine compartments that are nice and warm from all that driving.  If you start up the car and the cat is in the engine, you could injure or kill the animal.  Give the cat a chance to escape. 
  • Get out the sweater.  Short-haired dog breeds get cold quick!  So dress them up in a little coat or sweater to keep them from catching a cold.
  • Never leave dogs or cats in the car alone.  A car can act like a refrigerator, holding the cold in.  Just think how cold you are and how long the car takes to warm up, animals are feeling the same thing. 
  • Active dogs need more food.  Animals burn more calories during the cold weather. So add a little something extra to the bowl.  Of course you want to make sure they have fresh, unfrozen water.

WATER HEATERS

  • Insulate your water heater.  There are blankets that are specially made for water heaters sold at home improvement stores.  You can put the blankets on yourself, however if applied wrong you can damage your water heater, cause damage to your home, and sometimes void the warrenty.  It is best to have a professional install these.  You don't necessarily need this for tonight but it's a good idea to do this during the southern Arizona winters.  Water heaters are often outside, in the cold garage.  They lose some of the heat to the air and become less efficient during this time of year. 
  • If water cut is cut to the house because of a burst pipe, turn off the water heater.  You can burn out the elements by not having water in your water heater.  So it's best just to turn it off until everything is fixed. 

IRRIGATION SYSTEMS

  • Shut off the water and drain.  Refer to your owners manual on how to do this.  Most piping buried in the ground is safe from freezing because the dirt, rocks, and foliage above it act as an insulator.  Where the pipes are exposed, you want to cover that with old towels or pipe insulation. 

December 26, 2007

Danger! Cold Night Ahead!

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Another cold morning Thursday, but we are going to get even colder Friday morning! Ok, so here are a few forecasted temperatures for cities around Southern Arizona for Friday Morning:

Tucson – 26 degrees

Green Valley – 22 degrees

Mt. Lemmon – 11 degrees

Hannagan Meadow – 8 degrees

Picacho Peak – 27 degrees

Oracle – 21 degrees

Safford – 19 degrees

Sells – 22 degrees

Nogales – 21 degrees

Willcox – 18 degrees

Sierra Vista – 19 degrees

Bisbee – 16 degrees

Douglas – 18 degrees

With temperatures this cold, we would expect this coming night to be the coldest so far this season. With that said, make sure you wrap your pipes, cover the sensitive plants, and bring the pets inside. This will be a hard freeze with temperatures dropping below the 32 degree mark for several hours.

We are getting this cold because of a push of cold air coming directly from Canada, combine that with clear skies and dry conditions and you have the perfect situation for a very cold night. Clouds help to trap heat, moisture will also help to hold some of the heat of the day, and wind help to mix the air (not allowing it to cool). With none of these in place, the earth’s surface gives off the energy it gained during the day (from the sun) in the form of heat and it shoots right out into space. You can think of the situation like having a really thin sheet on your bed instead of the normal comforter, heat just passes through the thin sheet instead of being trapped by a thick comforter.

We will slowly warm into the weekend and have near seasonal average temperatures return by the beginning of next week. No rain over the next seven days! Enjoy you week!

-          First Alert Meteorologist Aaron Pickering

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Who Had The White Christmas?

Nsm_depth_2007122505_national_2

Check out this map.  It's of the snow on Christmas day.  The deeper the snow, the darker the color.  The average snow depth is 4.1" and 40.9% of the country woke up to snow on the ground Christmas morning. 

More snow is on the way for much of the country.  To track the latest weather check out our Weather Extras.  You can get the latest delays at airports across the country and see what is going on right now in the nation's weather. 

Have a safe holiday week! - First Alert Meteorologist Erin Jordan

December 21, 2007

Keeping An Eye Out For Santa!

Each year NORAD, the North American Aerospace Defense Command, tracks Santa, which is definitely a good thing.  Although Santa is no threat to the U.S., NORAD's official job is tracking man-made threats to the United States and it's territories. This includes missiles and aircraft.  Santa needs to make sure his sleigh stays safe and away from any planes during his travels.  So each year on Christmas Eve into early Christmas morning, NORAD helps him avoid obstacles in the sky as he delivers presents to children around the world.  Santa As he enters North America, jets from both Canada and the United States escort him to make sure he gets to all the homes safely.  The photo at left is from last year.  It's of Santa entering New York harbor, passing right be the Statue of Liberty.  Santa Tracking is a high security, high tech mission!  And you can track Santa across the world yourself, just check out NORAD's Santa Tracker.  Throughout the day you can find out exactly where he and his reindeer are located.  And you can check out photos, just like the one at left, of him flying in and out of cities across the world. 

Have a wonderful holiday weekend! -  First Alert Meteorologist Erin Jordan

December 20, 2007

Will It Be A White Christmas?

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Check out this image!  The blue is the areas of the country that is snow covered as of Wednesday December 19th.  A pretty good portion of the country has something on the ground.  In fact 46.8% has some snow.  The average snow depth across the country for Wednesday was 3.8".  And the place with the most snow is in the Cascade Mountains with 569.7". That is over 47 feet of snow!  Crazy!  For form information on snow check out the National Weather Services National Snow Analysis page

Some of this snow is melting as you read this but a series of storms sweeping of the Pacific will bring more snow to much of the northern part of the country.  It looks like about half the country could have a white Christmas!

Have a great day! - First Alert Meteorologist Erin Jordan

December 19, 2007

Looking Down At Midwest Snow

Usa_tmo_2007350Snow!  Ok...so I know snow has been the subject of the last three entries on the blog, but when I don't live in it, I get excited about it.  The massive storm that moved across the central United States last weekend covered many states in snow.  And as the clouds clear out you can actually see the snow on the ground.  Check out the photos at left.  You can tell the difference between snow and clouds by looking at the topography of the ground. You can see rivers and mountain ranges clearly defined by the snow.  While if the area is covered by clouds, like much of Minnesota in this photo at top, you can't see the rivers and hills.  Pretty cools stuff! 

More snow is in store for southern Arizona, but not as much as you see in the photos at left!  Southern Arizona won't see much of anything Friday, as a weak disturbance heads through the state.  We'll have a mix of sun and clouds but the rain and snow will mostly elude us.  However, the northern part of the state will see a bit more.  So Snowbowl could see some fresh powder for the holiday weekend.  Check out the live webcam of the San Francisco Peaks

Have a great week and safe holiday travels! - First Alert Meteorologist Erin Jordan

December 18, 2007

How The Snow Stacks Up

Tucson experienced it's first freeze on Saturday with a low of 29 degrees.  Now that is chilly!  The ice may have been on the windshield but the snow remains elusive in our city of over a million people.  However, our average yearly snowfall is 1.3".  Phoenix usually gets a trace amount, which basically means a few flakes are seen ever year but nothing really sticks to the ground. 

Flagstaff_snowThis photo, sent in by Bill Morrow, is of Flagstaff this past weekend.  What a gorgeous sight!  It may only be a few hours from Phoenix but it's a world away when it comes to winter weather.  They average 100.8" of snow a year!  Compare that to Buffalo New York, which averages 91.1" of snow.  Even Anchorage, Alaska averages less than Flagstaff with 69.5" of snow.  Check out this list of average snowfalls for cities, towns, and other locations across the country.  A few of the totals may surprise you. 

Ski Valley on Mt. Lemmon isn't on the list, but that Sky Island does get it's fair share of snow.  Records have only been kept at Ski Valley since 1990, which makes the averages a bit unreliable. The longer the record keeping, the more accurate the numbers.  In the past 27 years, Ski Valley has average 72.4" of snow each year.  The month with the most snow was February 1997 with 150"!  On the last day of the month 30" fell.  1997 was also the snowiest year with 285" piling up.  That is almost 24 feet of snow!  Of course that did not fall all at one time.  Thank goodness.  I think we would still be digging out a decade later! 

Send us you photos!  We love the snow and just about any other weather photo you can e-mail. Check out our Viewer Views.  You may see your photo in the slide show or on the air. 

Have a wonderful week finishing up your Christmas shopping.  I just mailed all mine out! - First Alert Meteorologist Erin Jordan