Category Archives: Weather & Sky

Seen Last Week: Tales of Two Things

Spotted knapweed closed on a gray day, Frick Park, 26 Sep 2026 (photo by Kate St. John)

28 September 2026

Same but different. Last week I photographed whatever caught my fancy. Today I found three pairs of photos connected by their similarities and differences. Tales of Two Things.

Saturday morning 26 September was chilly with heavy dew. At Frick Park I found two purple flowers with different approaches to the day. The spotted knapweed, at top, had been closed and was just starting to open at 9:50am. New England asters in the same meadow were fully open.

New England aster, open on a gray day, Frick Park, 26 Sep 2026 (photo by Kate St. John)

Schenley Park still has old incandescent streetlights in operation. This one on the Panther Hollow Bridge framed a tiny cloud on 24 September.

Streetlight frames a tiny cloud on Panther Hollow Bridge, 24 Sep 2026 (photo by Kate St. John)

On 25 September I discovered a paper wasp nest inside the bulb area of this streetlight at the edge of Panther Hollow Lake. The wasps were flying in and out. Obviously the light is not in operation.

Active paper wasp nest in a streetlight at Panther Hollow Lake, 25 Sep 2026 (photo by Kate St. John)

Panther Hollow Lake (actually pond-sized) keeps going through changes. About six weeks ago it was in flood. When I photographed it on 21 August the water level was falling with duckweed coating up to the high water mark.

Panther Hollow Lake, high water after flood plus lots of duckweed, 21 August 2026 (photo by Kate St. John)

The lake kept draining and now, on 25 September, it is the lowest I’ve seen in a long time — even lower than the drain. Again duckweed is coating the concrete edge up to the most recent high water mark. Hmmm.

Exceedingly low water at Panther Hollow Lake, 25 Sep 2026 (photo by Kate St. John)

Will it stop draining before it’s empty?

Seen This Week: Various

I hold a newly banded ovenbird at Bird Lab’s Hays Woods banding station, 15 September 2026 (photo by Shaina Kenny). All banding is conducted under a federally authorized Bird Banding permit issued by the U.S. Geological Survey.

19 September 2026

“The world is so full of a number of things, I’m sure we should all be as happy as kings.” — Robert Louis Stevenson

On Tuesday 15 September I visited Bird Lab’s banding station at Hays Woods. Migration had been intense the night before and they were having such a busy day that I forgot to take pictures. Finally things slowed down and there was time for me to meet and release a bird. Bon voyage, ovenbird!

On Friday 11 Sept I joined Three Rivers Birding Club’s outing to Sewickley Heights Park where we saw 47 species, 11 of which were warblers. Here we are walking the Pipeline Trail. See our checklist here which includes Dave Brooke’s photos.

The path of yellow flowers on the Pipeline Trail at Sewickley Heights Park during 3RBC outing, 11 Sept 2026 (photo by Kate St. John)

Meanwhile, three beautiful sunrises: September 5, 8 and 12.

Seen Last Week: Storms & the Aftermath

Storm clouds before the rain, 3 Sept 2026 at 6pm (photos by Kate St. John)

7 September 2026

On Thursday 3 September severe thunderstorms hit the Pittsburgh area with high winds and torrential rain. The official rain total at the airport was 2.14″ but that rain came all at once. At a sensor near Schenley Park, the rain came down at the rate of 5.58″ per hour for 15 mins and then the sensor lost power.

video embedded from WTAE Pittsburgh on YouTube

Areas east of the city were hard hit, especially Westmoreland County and eastern Allegheny.

video embedded from CBS Pittsburgh on YouTube

Schenley Park didn’t suffer too much but there were interesting side effects.

On a walk on Friday at the Bartlett end of Schenley I could tell that Panther Hollow Run had flooded, but it often does. I was surprised however to find six fullsize bricks scattered along the creek bank below the Hollow Run Trail bridge. Here’s where they came from.

At the head of the Panther Hollow Run valley, where the creek resurfaces(*) in three big drain pipes, I found another brick mostly buried in mud. This one couldn’t move but the other six were 290 yards downstream, carried by the flood for the length of three football fields.

Panther Hollow Run Valley after flash flood, 4 Sep 2026 (photo by Kate St. John)

Three pipes were inadequate to handle the flood. Water came down overtop the pipes and carried an orange cone with it, perhaps dislodging these structural stones.

The head of Panther Hollow Run resurfaces in these 3 pipes, 4 Sep 2026 (photo by Kate St. John)

The flood came from on Bartlett Street and eroded the hillside. (* The creek is buried under Bartlett Street.)

Flood aftermath seen from Bartlett Street, 4 Sep 2026 (photo by Kate St. John)

Many people in western Pennsylvania are still cleaning up, making insurance claims, and calling FEMA (Federal Emergency Management Agency).

“A Hard Rain’s a-Gonna Fall“

Early Signs That Winter is Coming

Western sandpipers in flight (photo from Wikimedia)

19 August 2026

Though the growing season hasn’t ended yet, it is waning fast in Alaska. The Fairbanks area has already lost 5 hours and 45 minutes of sunlight since the June solstice(*) and they’re currently losing nearly 7 minutes of sunlight per day.

The National Weather Service in Fairbanks points out they’ll have less than 14 hours of daylight by September 8 (at 13:49).

Shorebirds key on day length to determine when to migrate. When their very short breeding season ended they gathered at the shore in July and are now on the move in August

Shorebirds assembling at Kinzarof Lagoon, Izembek National Wildlife Refuge in July 2008 (photo from Wikimedia)ย 

Late August marks the peak departure window for adult arctic-breeding shorebirds leaving Alaska. Species actively migrating out of the state this week include the Western Sandpiper, Dunlin, Lesser Yellowlegs, American Golden-Plover, Buff-breasted Sandpiper, Pectoral Sandpiper, Red Phalarope, and [Hudsonian] Whimbrel.

— Google response to “what shorebirds are migrating out of Alaska this week?

Have we seen any of them in Allegheny County yet? No, but some birds are on the move. Here are screenshots from last night’s BirdCast tracking.

screenshot from BirdCast Migration Dashboard for Allegheny County, PA. Data for the night of 19 August 2026

Notice that we’ve had two exceptional nights this month.

screenshot from BirdCast Migration Dashboard for Allegheny County, PA. Data for the night of 19 August 2026

I missed them because I haven’t been paying attention. It’s already time to gear up for fall migration.

Seen This Week: Sun Pillar and Oh, Deer

“Welcome August” sunrise, 1 August 2026, 6:06am (photo by Kate St. John)

1 August 2026

There was a spectacular sunrise this morning to usher in the month of August. As quickly as it built to fiery red with a sun pillar, it was gone.

On Thursday 30 July, Charity Kheshgi and I went birding at Frick Park where our most impressive sighting was not a bird. In the area south of the large deer exclosure on Clayton Hill we saw a 10-point buck browsing with a 4-point comrade. Both were still in velvet and were exhibiting the behavior I’ve often noticed in August in the City Parks. The deer kept their distance but were curious and generally unafraid of us. Their placid behavior changes in September for the rut — at which point stay away.

We only had our cellphones and wanted to take pictures but we kept our distance, too. Hence the photo quality.

10-point buck, Frick Park, 30 July 2026 (photo by Charity Kheshgi)

A slideshow of my photos.

We also saw this beautiful flower, nodding onion (Allium cernuum), in the meadow near the Environmental Education Center. It thrives in the presence of so many deer because deer won’t eat it.

Nodding onion, Frick, 30 July 2026 (photo by Kate St. John)

Smoke Comes & Goes & Comes Again: Here’s Why

Wildfire smoke in Niagara region, St. Catharines, ON, 15 July 2026 (photo from Wikimedia)

19 July 2026

As I wrote on Friday 17 July, wildfire smoke has been plaguing the northeastern U.S. and the Great Lakes region in the U.S. and Canada.

The photo at top shows the worst day in the Niagara Falls area as seen in St. Catharines on Wednesday 15 July. Pittsburgh’s worst day was Friday the 17th, shown in the video below.

Wildfire smoke in Pittsburgh on 17 July 2026, video embedded from WTAE-TV Pittsburgh on YouTube

The source is nearly 1,000 forest fires in northern Minnesota and western Ontario, most of them at least a 1,000 miles away. Across the continent there are many, many more. Here’s what’s burning in North America this morning according to NASA’s Fire Information for Resource Management System US/CANADA map.

Wildfires in North America on 19 July 2026 (NASA FIRMS US/CANADA)

On Friday Pittsburgh’s air was so bad it was Hazardous (Maroon color) …

… shown on the PurpleAir map(*), Friday 17 July 2026 at 6:42am EDT. I’ve made it tiny so you won’t confuse it with today’s map. Click on the image for a larger view.

Happily the air cleared Saturday at noon and air quality improved into the Orange zone (considered a high rating but alas fairly common Pittsburgh’s Mon Valley). I went out for a walk and, though it was nice to be outdoors, it was so humid I dripped with sweat.

Today’s air quality should be even better, right? Nooooo! It’s in the Red Zone.

PurpleAir map North America as of 19 July 2026, 6:54am

Why is it worse? Why is it here at all?

This wildfire smoke comes to us on upper level winds that pass over the fire area before they reach us. (Wildfire smoke has risen that high!) This wind map from earth: a global map of wind, weather and ocean conditions shows the jet stream coming from the fire zone this morning (7:18am) and dipping south to reach us. Pittsburgh is the black dot.

screenshot, 250hPa. From earth:: a global map of wind, weather and water, 19 July 2026, 7:18am EDT

On Saturday upper level winds were coming from the Great Plains so our air was better. (I’ve added a wobbly green arrow to Saturday’s map to point this out. Pittsburgh is the black dot.)

screenshot, 500hPa. From earth:: a global map of wind, weather and water, 18 July 2026, 9am EDT

So I’m hoping the jet stream will wobble and give us good air. Then we’ll breathe easy.


And… a Huge Debt of Gratitude to Hudson Valley Weather on Facebook for their excellent description of the origin and persistence of the fires and upper-level transport. Their Facebook post is well worth a read.


p.s. (*) PurpleAir’s interactive map has a dot for each air quality monitor providing realtime data to their network. Some of the dots are government AQ monitors but most are individuals and organizations like GASP that want/need to know the air quality in their area.

Seen This Week Before The Smoke

Asiatic dayflower, Schenley Park, 11 July 2026 (photo by Kate St. John)

18 July 2026

Before the smoke came to town I went on a long walk in Schenley Park and around the neighborhood this week. The captions tell the stories.

  • Flowers and a cooperative young rabbit in Schenley Park on 11 July.
  • Smoke-free sunrise on 12 July.
  • A lovely tiny weed in the cobblestone cracks + a deer eating her way through a front yard on Bayard Street, 13 July.
  • A dinosaur statue being repainted, photographed in media res on 2 July and complete on 14 July. (I prefer the 2 July version.)
Bindweed with insects, Schenley Park, 11 July 2026 (photo by Kate St. John)
Young rabbit, Schenley Park, 11 July 2026 (photo by Kate St. John)
Sunrise before the smoke, 12 July 2026 (photo by Kate St. John)
Tiny pretty weed in the cracks, Japanese mazus, 13 July 2026 (photo by Kate St. John)
Doe browsing on Bayard Street, 13 July 2026 (photo by Kate St. John)
Doe browsing on Bayard Street, 13 July 2026 (photo by Kate St. John)

Smoke in Pittsburgh

Wildfire smoke in Pittsburgh before sunset 16 July 2026 (photo by Kate St. John)

17 July 2026

Yesterday while I wrote about the raging wildfires in western Ontario, 1000 miles from Pittsburgh, their smoke was blowing in our direction. By 8:00am yesterday I could see it as faint haze. By sunset it had turned the sun orange. The smoke was so thick that John English did not need a filter to photograph the sun, complete with sunspot.

Sun in wildfire smoke, Homestead, PA, 16 July 2026 (photo by John English)

Since then the air has gotten worse and is dangerous for everyone.

The PurpleAir monitor network shows a large swath of hazardous air (maroon color) from Western Ontario through the Great Lakes to the Atlantic Ocean. Its path is amazingly well defined on the northern edge where you need only drive 50-60 miles to escape the smoke (green). I’ve drawn a white line at that edge. Click on the screenshot for a closeup of the white line. Click to see the live PurpleAir monitor map. Zoom in on their map to see the details.

PurpleAir map North America as of 17 July 2026, 6:42am

Because of Pittsburgh’s frequent industrial bad air, the Group Against Smog and Pollution (GASP) teamed up with six local organizations to place PurpleAir monitors in the gaps of Allegheny County’s air monitoring network. Here’s the GASP 06 monitor in West Oakland at 8:01am this morning, 17 July 2026. Find out more about the Allegheny County Community Air Monitoring Project here and see their real-time data here.

GASP 06 Monitor in Allegheny County at 17 July 2026 8:01am

Observations:

Distant landmarks outside my window have disappeared. Notice the water tower in the sunrise picture is gone today.

I have seen very few birds flying. No hawks, no finches, no sparrows. Three chimney swifts came out this morning to check the air and went back to their roost. No swifts flying now.

Having lived in the Mon Valley airshed, I am all too familiar with the smell of Pittsburgh’s bad air. Yesterday it I was momentarily amazed the air does not smell like sulfur.

Indoor air quality is better that outdoors, but not best. Yesterday afternoon at 4pm I turned on my air filter and found out we were in the Red Zone. I’ve left it running since.

Indoor air quality on 16 July 2026, 4pm (photo by Kate St. John)

Fire in Canada

Forest fire photo from Wikimedia

16 July 2026

The wildfire smoke in Pittsburgh today is from wildfires in western Ontario and the Boundary Waters of Minnesota(*).

As of Thursday 16 July at 6:03am, there are 857 fires burning in Canada.

Active wildland fires in Canada, 16 July 2026, 10:03am UTC (map from Canadian Wildland Fire Information System)

NASA’s GeoFire product shows fire hotspots and visible smoke on Monday 13 July.

On the ground it is frightening. My first view of it was this raw footage from a Canadian National Railway (CN) freight train trapped by fire near Armstrong, Ontario. The engineer is on the radio calling for help. WARNING: THIS RAW FOOTAGE CONTAINS AN UNCENSORED WORD.

This 6+ minute CBC News report begins with the CN train and shows evacuations throughout that part of Canada and wildfire smoke in Toronto.

video embedded from CBC News: The National on YouTube

News from The Boundary Waters in Minnesota: 6,000 to 10,000 paddlers have been evacuated.

On Independence Day 250

Statue of Liberty during the Annular Solar Eclipse on 10 June 2021 (photo from Wikimedia Commons)

4 July 2026

Today we celebrate the signing of the Declaration of Independence in Philadelphia in 1776, 250 years ago.

We often hear a sentence or two from the Declaration but it’s worth a look today to see how well it holds up. I have transcribed the beginning below. NOTE: I added 1 paragraph break for readability.

Beginning of the United States Declaration of Independence (first 288 words)

In CONGRESS, July 4, 1776.

The unanimous Declaration of the thirteen united States of America,

When in the Course of human events, it becomes necessary for one people to dissolve the political bands which have connected them with another, and to assume among the powers of the earth, the separate and equal station to which the Laws of Nature and of Nature's God entitle them, a decent respect to the opinions of mankind requires that they should declare the causes which impel them to the separation.

We hold these truths to be self-evident, that all men are created equal, that they are endowed by their Creator with certain unalienable Rights, that among these are Life, Liberty and the pursuit of Happiness.โ€”That to secure these rights, Governments are instituted among Men, deriving their just powers from the consent of the governed,โ€”That whenever any Form of Government becomes destructive of these ends, it is the Right of the People to alter or to abolish it, and to institute new Government, laying its foundation on such principles and organizing its powers in such form, as to them shall seem most likely to effect their Safety and Happiness. Prudence, indeed, will dictate that Governments long established should not be changed for light and transient causes; and accordingly all experience hath shewn, that mankind are more disposed to suffer, while evils are sufferable, than to right themselves by abolishing the forms to which they are accustomed. But when a long train of abuses and usurpations, pursuing invariably the same Object evinces a design to reduce them under absolute Despotism, it is their right, it is their duty, to throw off such Government, and to provide new Guards for their future security.

Following this, the signers provided a list of grievances (29 paragraphs) documenting King George III’s “repeated injuries and usurpations” of the Americans’ rights and liberties. What were they? Here are nine of them, paragraphs 12 through 20 quoted below.

United States Declaration of Independence list of grievances, paragraphs 12 through 20.

He has kept among us, in times of peace, Standing Armies without the Consent of our legislatures.

He has affected to render the Military independent of and superior to the Civil power.

He has combined with others to subject us to a jurisdiction foreign to our constitution, and unacknowledged by our laws; giving his Assent to their Acts of pretended Legislation:

For Quartering large bodies of armed troops among us:

For protecting them, by a mock Trial, from punishment for any Murders which they should commit on the Inhabitants of these States:

For cutting off our Trade with all parts of the world:

For imposing Taxes on us without our Consent:

For depriving us in many cases, of the benefits of Trial by Jury:

For transporting us beyond Seas to be tried for pretended offences:

Read the full transcript of the Declaration of Independence at the National Archives.

United States Declaration of Independence (photo from Wikimedia Commons)

I usually write about Birds & Nature. A natural event is in the photo at the top. On 10 June 2021 an annular solar eclipse was visible from parts of Russia, Greenland, and northern Canada. Those in Northern Asia, Europe, and the United States saw aย partial eclipse. This is what it looked like near the Statue of Liberty. Photo by Anthony Quintano posted on Wikimedia Commons.