It’s been three and a half weeks since the September equinox and every day is shorter than the last. Sunrise draws attention because it’s later every day. On Thursday the sky turned red before the sun appeared.
In the half light after sunset Morela prepared to roost.
The days are the same length as in late February during peregrine courtship. Morela and Ecco visited the nest as if they are thinking of spring.
Meanwhile most plants and trees have set fruit, including this streetside Callery pear.
And in Downtown Pittsburgh I found a directional message on our tallest building.
It’s foggy this morning in Pittsburgh as it has been for several days. On Saturday, heavy dew gleamed at Frick Park and laced the spider webs with beads of moisture.
Today the temperature is warm enough under the trees that there is no fog beneath them though there is plenty above.
On Friday at Schenley Park we could see at ground level but fog above the trees made the sun look like a moon under the arch of the Panther Hollow Bridge.
When the fog cleared, the Cathedral of Learning emerged as from a magical kingdom.
Today the fog has intensified in the last hour, no birds are stirring in the trees and Ecco is waiting at the Cathedral of Learning to start his day.
When most storms form they stay in the troposphere, the layer of the atmosphere where the majority of our planet’s weather takes place. But occasionally, they “punch up” into the stratosphere, creating mountains of clouds that trail wispy formations called above-anvil cirrus plumes (AACPs). These high-flying clouds have been linked to high winds, hailstorms, and tornadoes on the ground.
The weather has been pleasant with low humidity and highs in the 70s. Chilly fall mornings produce a mist on Panther Hollow Lake.
Asters are blooming right on time …
… but this hawthorn tree is confused, opening two flowers and a leaf in September.
This eastern screech-owl confirms it’s fall when he peeks from his well known roost on 4 September. Though screech-owls breed in Schenley Park, they only use this roost during the non-breeding season.
My least favorite hot weather will return tomorrow through Tuesday, forewarned by this morning’s red sunrise.
Pittsburgh’s crows have finished breeding so the local families now gather in a communal roost. Last week I counted 100 of them, mostly fish crows, congregating at dusk on Ascension Church’s knobby towers, then they flew west to roost beyond the VA Hospital.
Last month they congregated long before sunset near the Cathedral of Learning but they’ve been warned not to do that. On 29 July a peregrine chased the pre-roost flock out of Oakland. I watched her repeatedly dive-bomb them, harass an individual low-flying crow, and push the flock east into the trees in Shadyside. As soon as they had settled far away, Morela flew back to the Cathedral of Learning.
The crows still fly west into the sunset and east into the sunrise but now they give the Cathedral of Learning peregrines a wide berth.
Which month produces the most lightning in Pittsburgh?
If a person is struck by lightning what’s their percentage change of surviving it?
Who holds the world record for being struck by lightning? How many times was he hit? Did it eventually kill him? And a much longer story about him here.
How far away is that lightning? Plus an easy technique for answering this question.
(And of course) Why does thunder rumble?
And a bonus! Here’s a 10 minute video of lightning in slow motion recorded in Singapore by The Slow Mo Guys. (I’ve skipped the video forward to just before the lightning starts.)
(photo from Wikimedia Commons; click on the caption to see the original)
This week my husband and I have been visiting family in Tidewater Virginia, our first long trip since the COVID-19 shutdown. Everyone’s vaccinated (& some had COVID last winter) so at last we’re making the “Real Hugs Tour.”
It is hot. 92 degrees F near the water, 100 degrees on the roads in the interior. Every morning I take a walk before it gets too unpleasant.
At the ocean I was pleased to see saltwater birds and southern songbird species. Favorite birds on the bay side of First Landing State Park were least, royal and sandwich terns plus a blue grosbeak (eBird checklist here).
I also encountered a lot of bug sounds …
… and a dragonfly that repeatedly perched on a twig in the stiff wind. Its behavior reminded me of a kestrel.
The landscape is beautiful and welcoming until you stand in the sun.
Blackberries ripen in the heat.
House finches are prolific breeders in the hanging baskets on my sisters porch. This brood froze as we peeked under the fern in one basket while another house finch couple was building a new nest in the next basket.
In Pittsburgh it is 10-15 degrees cooler but we will miss the sea breeze when we get home tomorrow.
At 3pm on Wednesday 7 Jul 2021 a heavy downpour in the Nine Mile Run watershed caused a flash flood recorded by Upstream Pittsburgh‘s stream cam (video below, blurry because it’s raining). The downpour was so localized to the East End that it did not register on Pittsburgh’s official weather gauges. Flood debris showed that if I’d been on the Nine Mile Run Trail the water would have been up to my ears! (photo at top taken at 40.4263341,-79.9068387).
And on Friday 9 July another localized thunderstorm let loose for half an hour in Squirrel Hill. I have no photos because I was driving down Braddock Avenue in the downpour, hoping the river on the road would not become a car-swallowing lake under the Parkway bridge. Fortunately the water ran off into Nine Mile Run. Another flash flood. I’m glad I was not on the trail.
We don’t need a particularly wet year for this to happen. Pittsburgh’s 2021 rainfall is actually 0.93 inches below normal as of today. The problem is that the rain falls all at once, especially in June and July.
Climate change is making the problem worse. A 2019 study found that extreme precipitation has increased 55% in the Northeastern US in my lifetime.
Brace yourself, Pittsburgh, for a lot of flash floods in the future. Sometimes every day.
About Nine Mile Run per Upstream Pgh (formerly Nine Mile Run Watershed Association): “Nine Mile Run is a small stream that flows through Pittsburgh’s East End, mostly underground. The 7 square mile Nine Mile Run watershed is home to the largest urban stream restoration in the United States, completed by the U.S. Army Corps of Engineers in 2006.” Upstream Pgh got its start with this project and now works throughout the region on community-oriented stormwater management projects, large and small, plus much more. Click here for their website.
(photo by Kate St. John, videos from Upstream Pittsburgh and CBS Pittsburgh, maps from NWS Pittsburgh an climate.gov; click on the captions to see the originals)
The sky was enchanting on Thursday morning while enchanter’s nightshade (Circaea lutetiana or perhaps Circaea canadensis) was blooming in Schenley Park.
On 16 June, six of us were enchanted by mountain laurel and hundreds of pitcher plants blooming at Spruce Bog on top of Laurel Mountain.
Mountain laurel on Laurel Mountain, 16 June 2021 (photo by Kate St. John)
Mountain laurel flower buds, 16 June 2021 (photo by Kate St. John)
Pitcher plants in bloom at Spruce Bog, 16 June 2021 (photo by Kate St. John)
same scene in Portrait mode
Wild Sarsaparilla gone to seed, Laurel Ridge State Park, 16 June 2021 (photo by Kate St. John)
An insect wrapped and sealed this leaf, Laurel Ridge State Park, 16 June 2021 (photo by Kate St. John)
In the slideshow above, notice the leaf that’s wrapped and sealed into a tube. The structure was made by an insect. I don’t know which one.