Category Archives: Weather & Sky

Huddle!

Ducks in a huddle (photo from Shutterstock)

1 October 2009

No, I’m not talking about football.  I’m talking about staying warm.

The weather has been getting colder every day for a week.  This morning it was in the upper 30s at dawn.  By now most of you have turned on your heat, but not us.  We’re toughing it out until we get a new furnace.  The old one won’t turn on and rather than pay to fix it I thought we could cope without it until the furnace man comes with a new one on Friday.

This plan has resulted in a couple of “learning experiences.”

First, we’ve learned that 60 degrees feels great outdoors but when you’re inside it’s like Antarctica, especially when it was summer last week.

On Tuesday I was really crabby and could not figure out why.  Eventually I put on my coat (though I was indoors) and suddenly felt fine, even happy.  I was crabby because I was cold.

We’ve discovered which rooms are warmer and are spending our time there.  So why is the basement warmer than the living room?  Cold air should be falling to the basement – and it is – but the water heater is running more often and its metal exhaust vent warms the room enough to make a difference.

And finally, we’re huddling.  We huddle at night just like the ducks in this picture and our cat finds a crack to sleep between us.  Emmy seems so affectionate right now.  I hope she remembers to love us when the heat is on.

(Ducks in a huddle from Shutterstock)

p.s. Emmy has many names including Emmalina.

Ice Jam

Ice jam on Raccoon Creek (photo by Kate St. John)After weeks of bitter cold, Raccoon Creek was icy and quiet yesterday when the temperature reached 55 degrees at the Wildflower Reserve.

Muddy water flowed through an ice-free channel but after two warm days the creek was high and made soft gurgling sounds as it passed under the remaining ice.  It looked peaceful while I paused to eat my lunch.

Then crack! Boom!  Upstream a large slab of ice broke free, crashed into a submerged tree and jammed.  More ice joined it, spinning in the flow.  The pressure cause a big section to break free and scrape the shoreline with an ugly tearing sound.

Chunks from the breakup floated down to a small jam in front of me.  When they reached the blockage their back ends tipped down, their noses tipped up, they flipped over, submerged and were sucked under the ice sheet.  I watched them pop out on the other side and bob downstream.

This didn’t last long.  Soon the entire channel filled with ice, the water rose rapidly and flooded the shore.  Then the ice rose too, buckled and broke.  Jamming and breaking, the amazing thing was that this action was caused by liquid and solid water rubbing up against each other.

I’m glad the episode at Raccoon Creek was small.  I didn’t get wet.  This morning’s news reported an ice jam on Neshannock Creek in Lawrence County where three people were rescued from the rising water.

(photo of an ice jam on Raccoon Creek on February 8, 2009, by Kate St. John)

Subnivean

Subnivian mouse trails at my bird feeder (photo by Kate St. John)Last night it snowed then sleeted then rained.  It’s still raining, but so cold it’s turning to ice.

This morning I looked out the back window to see how the bird feeders were doing and found a network in the snow. 

What’s this?  I went out to investigate. 

All the lines originated from a hole under the sidewalk and grew outward like a tree toward the bird feeder.  Subnivean mouse trails! 

Subnivean means “under the snow.”  The mouse came out last night and tunneled to the feeders.  Under the snow he stayed warm and relatively safe from predators while he munched down on fallen seed.  Until today I didn’t even know he lived there because his trails in powdery snow aren’t as visible, but this morning the ice and rain made his tunnel roof transparent.  Way cool!

Many animals live under the snow all winter.   If you click on the photo, you’ll see a diagram of subnivean life in the arctic.  Here in Pittsburgh we don’t have snow cover all winter so the activity is intermittent. 

Want to hear more?  Here’s an audio story from New Hampshire Public Radio.

(photo by Kate St. John, using my cell phone which caused that pink tinge.)

Brrrrrrr!

Pine Siskin and American Goldfinches (photo by Marcy Cunkelman)As I write this it’s -4 degrees Fahrenheit (-20 Celsius).

Fortunately there’s a nice covering of snow to protect the plants and small animals, but we and the birds operate in the air – where it’s coldest.

Years ago I knew a woman named Louise Reiley who was a missionary nurse in Alaska and China more than 50 years ago.  She had many stories about the successes and hardships of her time abroad but there was one thing she said that stuck with me:  “Hot and cold are a state of mind.”

Louise explained that if you thought “warm” when it was cold, you wouldn’t feel the temperature.  She said it really worked.  I have never been able to do it.  Instead I compensate by wearing layers. 

Today it’s going to take a while to get dressed:  tights, corduroy jeans, ski pants, two layers of socks, boots with felt linings, undershirt, turtleneck, wool sweater, parka with hood, boola scarf, hat, glove liners, mittens.  When I’m done I can barely walk and can’t see my feet without bending over, but I don’t feel the cold. 

I’m lucky I don’t have to stay outdoors all the time.  Birds do, so today will be especially challenging for them.  They’ll fluff out their feathers to make their down hold more heat and they’ll eat a lot.  If they don’t get enough to eat, they’ll die.

So bundle up and fill your bird feeders.  Let’s all think “warm.”

(photo of a Pine Siskin and American Goldfinches by Marcy Cunkelman)

Winter White

Schenley Park in snow (photo by Kate St. John)Just now we’re having two days of winter.

On Thursday it drizzled, rained and poured heavy snow-filled drops.  Miserable weather but excellent for ducks as Dan Yagusic discovered when he found, among other things, two long-tailed ducks on the Allegheny River.

It was a lot of rain – so much that it flooded the Monongahela parking wharf – but the rain changed to snow overnight and coated everything white.

I was stir crazy from staying indoors so I walked to work on Friday and took this picture in Schenley Park.  Not an inspiring photo, but you get the idea.   As if we needed to be convinced it’s winter again, it was 17 degrees last night.

Today it’s clear, sunny and bright.  The snow may stay through this afternoon but it’ll certainly melt tomorrow when the temperature climbs into the 50s again.

I shouldn’t complain.  I’ll be doing the Buffalo Creek Christmas Bird Count tomorrow and will appreciate the warmth.  But I really do prefer winter white.

Cold Sun

Outside my window (photo by Kate St. John)It’s one of those days when it looks nicer outside than it really is.   The wind is blowing hard from the north but the sun is out so the birds and squirrels are at my feeders. 

It’s a good day for staying indoors with a cup of hot chocolate.  I know this because I took a walk at Duck Hollow this morning.  It’s sheltered from the north so after seeing hundreds of gulls, some hooded mergansers and a lesser scaup I walked along the river trail. 

There I found a flock of cardinals, carolina chickadees and white-throated sparrows eating Oriental bittersweet berries.  This invasive plant seemed to be the only abundant bird food along the trail – except for the birds themselves.  A red-tailed hawk eventually caught one of them. 

I rounded the bend in the river.  Now the wind was in my face but there was a surprise overhead.  Two flocks of tundra swans flew over.  Woo hoo!

By then I was thoroughly cold so I hurried home for lunch and the comforts of home – and to look outside my window.

(photo by Kate St. John, taken from my back window)

So blue!

Absolutely blue skyI couldn’t let this day pass without commenting that we have yet another day of absolutely blue sky in Pittsburgh.  It looks just like that blue square at left (which is actually a picture of the sky).

Without a single cloud, it’s pretty hard to see migrating hawks.  I’m sure they’re up there but there’s no way to see them in a sky this blue.

OK, so I’m asking for clouds.

I’ll live to regret this request next month in gray November.

Not Long Now…

Red Sassafras leaves (photo by Kate St. John)Compared to the Great Plains and the coasts, Pittsburgh is not a windy place.  Our typical wind speed is 5-10 miles per hour and some days there’s no wind at all.

Gentle breezes are the norm, so you’ll understand why one of my favorite sounds is the swish of wind in the leaves.  Their rustling is so soothing that it actually improves my day to hear it.

Because I love this sound, I began to care whether the leaves were on or off the trees.  About ten years ago I started to keep track.

First I developed a rough standard for measuring “on” and “off.”  Then, using my neighborhood and Schenley Park as yardsticks, I watched the seasons change and tried to pick the date when most of the trees were bare.  Over the years that date has been around November 11th.

Of course the date is very weather dependent.  If a strong cold front comes through early, the wind and rain strip the trees.  If the weather’s mild and our first hard frost is late, the leaves hang on longer.  I’ve seen the date move later in recent years.

In any case, the days of leaves are numbered now.  It won’t be long before the trees are bare.  Then silence, except for the clacking of bare branches during winter storms.

(photo from my cell phone)

November 9, 2008:  Today is the first day this fall that most of the trees are bare.

Color & migration at Schenley Park

Ash tree at Schenley Park, Oct 11, 2008 (photo by Kate St.John)Not much to report – but it was a sunny day in Pittsburgh so I ignored my Saturday chores and took a walk in Schenley Park.

The fall colors are beautiful, as you can see by my photo.

I had my binoculars with me (always!) and searched the Cathedral of Learning for the peregrines when I got within view.  It didn’t take long to find them.

A light southeast wind was carrying migrating red-tailed hawks over Oakland.  The migrants didn’t know there are peregrines at Pitt and inevitably tried to catch an updraft at the Cathedral of Learning.  When they did, one of the peregrines would pop off the building and attack them.  This was bewildering for the hawks but I must admit I enjoyed watching the action after so many boring months of peregrine inactivity.

Between mock attacks, Dorothy and E2 perched up high to wait for the next red-tail.  It was a perfect day for hawk watching.

If a tree falls in the forest…

Fallen tree (photo by Kate St. John)…does it make a sound?

You bet it does!

On Sunday night, as the remnants of Hurricane Ike passed through western Pennsylvania, too many of us heard the noise of falling trees.  No rain fell but the wind gusted from 65 to 79 miles per hour.

Just that afternoon I had hiked the Glacier Ridge Trail at Moraine State Park.  At that point the weather was already unpleasant – 86 degrees and humid with winds over 30mph.

In the distance I heard the crack of a rifle shot, then several rapid shots followed by the sound of cannon.  It wasn’t gunfire.  Somewhere out of sight, a tree fell in the forest.

I was lucky I wasn’t close enough to see that tree fall.  When we were in Maine I learned about widow makers from my cousin John.  They’re dead limbs that are about to fall or have fallen partway and are hanging overhead.  Just a touch of wind is enough to send them hurtling to the ground.

Now that I knew what I was looking at, these trees over the trail made me nervous.  (I took their picture anyway).  The stronger the wind got, the sooner I wanted to be out of the woods so I picked up my pace.

Later that night when the wind howled against our house I wondered about the flock of wood thrushes I’d found in a thicket near these broken trees.   I hope they made it through the storm.