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Aug 3, 2020 3 tweets 1 min read Read on X
[THREAD] Latest on #Isaias:
- A strong tropical storm, to make landfall tonight near SC/NC border near or at hurricane intensity.
- Significant coastal flooding, high wind, heavy rain threat from Carolinas to Maine.
- DC to NYC to be heavily impacted. 1/
washingtonpost.com/weather/2020/0…
Storm will interact with unseasonably strong dip in jet stream as it nears Mid-Atlantic, will result in powerful onshore winds from MD to New England.
- Jersey Shore to see 70-75 mph wind gusts. Surge threat for NYC.
- Widespread 3-6-inch rain amounts in DC area. 2/
Also possibility of tornadoes with squalls coming ashore in parts of SC/NC with landfall, but also in northern Mid-Atlantic and southern New England.

This is a serious storm that could cause widespread power outages and disruptions, during a time of other disruptions. 3/3

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More from @capitalweather

Aug 7, 2023
⚠️DC area: We expect intense storms that could produce damaging or destructive winds -- especially in 5-7p window in immediate area.

Our detailed brief is up. Read it and share it:


Will thread some key points... 1/xwashingtonpost.com/weather/2023/0…
We are under a level 4 out of 5 risk. The last time that happened locally was June 13, 2013; the previous time before that was the June 29, 2012 derecho. So the @NWSSPC sees ingredients in place for numerous dangerous storms in the area.

2/x Image
@NWSSPC We're most concerned about:
1) Downburst winds -- like we saw July 29 this year. @NWSPC sees 45% chance of winds over 58 mph within 25 miles of any point in our area & 10% chance of 75+ mph
2) Quick-hitting tornadoes -- a lower chance than downburst winds but possible

3/x Image
Read 5 tweets
Jun 23, 2023
Communities are taking part in a radical revolution — of our lightbulbs. Bulbs are being swapped for more energy-efficient brighter LED lights.

But the rise of LEDs creates new issues for our night sky & health.

By @KashaPatel, @sadbumblebee, @kt_prry: wapo.st/3r3mNB3
Common types of LED lights emit more blue light than traditional high-pressure sodium bulbs. Differences are seen in this 2020 image from the Space Station. Bluer LEDs appear in Baltimore, while older amber-colored lights spread across D.C.

More: https://t.co/7TyF7WcYnCwapo.st/3r3mNB3
The blue light in LEDs can lead to more light pollution. In Chelan County in Wash, pollution grew worse after streetlights were replaced w/LEDs. Additional glare masked about half the previously visible stars:

📷@PostGraphics w/National Park Service data https://t.co/xtVNOw2KlCwapo.st/3r3mNB3
Read 5 tweets
Jun 12, 2023
This wildfire season in Canada is unlike anything it's ever seen to date. And part of a trend toward larger fires & more damaging fire seasons.

4.7 million hectares have burned; average year to date is 310,000.

Carbon emissions from fires through the roof

(1/5) Image
The land area burned so far in Canada has exceeded 5,000 percent of normal in some provinces. (2/5) Image
Some climate skeptics - to dismiss this year's fire activity - have pointed to decrease in number of fires in Canada over time. That is true, but prob b/c of improved prevention.

BUT, fires that burn have trended substantially BIGGER while summer temps have trended higher. (3/5) Image
Read 6 tweets
Jun 6, 2023
The smoke -- making the Eastern U.S. look like California at the peak of fire season -- is not normal.
The air is compromised from Minneapolis to DC to Boston, and the worst from western NY to arround Ottawa. A thread... 1/ Image
New York City, Detroit and Toronto rank among top 12 cities in the world for bad air quality currently. 2/ Image
The source of the smoke is wildfires in Quebec, which erupted late last week amid record heat. 3/

Read 7 tweets
Apr 22, 2023
Happy #EarthDay! We compiled images of Earth from different perspectives . Take a moment to appreciate the fragility and beauty of our home. 🧵

See the full list of images ranging from 12,000 feet under the sea to 4 billion miles in space by @KashaPatel: bit.ly/3AgM1xp Image
🛰️Bering Sea, from a satellite 440 miles above Earth

High vantage points often reveal large-scale marks on our planet. These colorful pockets are often blooms of microscopic marine algae called phytoplankton, from the Greek words phyto (plant) and plankton (wanderer). Image
👨‍🚀Auroral beads, as captured from the International Space Station 250 miles above Earth

The aurora can sometimes be obscured to sky watchers on the ground by clouds, but astronauts on the International Space Station can have a front-row seat to aurora activity from above. Image
Read 6 tweets
Feb 16, 2023
So much NOT NORMAL in DC this February:
* Tidal Basin cherry blossom buds already developing
* Biggest February tree pollen explosion on record
* Leaf out on area trees is occurring earliest in at least a a generation
Reporting by @islivingston: bit.ly/3ItPhu5 (1/x)
Here's the map which shows where spring leaves are emerging... it's already happening just south and east of Washington -- and is the earliest in at least 40 years per @USANPN. (2/x)
On Feb. 8, DC's tree pollen count hit 487 grains per cubic meter of air -- the highest on record so early in the year. While the time series is short, instances of very high pollen counts seem to be trending earlier. (3/x)
Read 4 tweets

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