Along the north US Atlantic coast in places like Maine, the geomorphic impacts of ice in tidal marshes is well-documented. Ice is much less common in estuaries farther south - I wonder how it might impact some Chesapeake marshes in particular that are barely holding on.
For WNC and #Asheville - this Reddit post raised two good (and concerning) points that is related to a post-Helene infrastructure. #icestorm
The aurora is back in central PA, and surprisingly better than yesterday evening!
Rare purple and blue aurora early this morning over central PA! The lights were sporadic throughout the night, but this was by far the best part.
Black Moshannon is a great place if you don’t mind the drive. Toftrees or anywhere near the airport is probably one of the better spots in town though since it’s north of most the light pollution.
Faint #aurora is visible to the naked eye from central PA, despite a Bz of +51. If that flips negative, this could be quite the night!
It will be a cold night for skywatching, but if it's clear, there's a good chance to see the #NorthernLights tonight!
The slow climb out of winter has begun: www.accuweather.com/en/space-new...
Snapshot from NOAA sea level rise visualization tool showing what level of inundation a 2.5 foot increase in water height would cause in the SF Bay Area.
Highest astronomical high tides of year (aka the "King Tides") will occur this weekend in NorCal. But this year, they will coincide w/additional storm surge from nearby low pressure--causing potential for SF Bay Area coastal flooding beyond what we've seen in recent years. #CAwx
Some false reports are circulating that Mt. Rainier is suddenly showing seismic tremor activity — this is not true. The signal being referenced is actually radio interference, most likely due to rime ice buildup on the antenna of one of our seismic stations.
The cloud forecast for Wednesday night when the Aurora Borealis is predicted to unfold. Even where the northern lights are not visible to the naked eye, smartphone cameras may still be able to capture pictures of the lights. Clouds are predicted across most of the West Coast and interior Northeast, with fair to good viewing conditions forecast for much of the balance of the contiguous U.S.
Encore of the #NorthernLights?
Another CME is about to hit Earth with impacts likely to continue into tonight. SWPC is predicting it to be similar to last night with #aurora potentially visible in almost every state... where it isn't cloudy:
www.accuweather.com/en/space-new...
Northern Lights are glowing over Pennsylvania!
From sunrise to sunset, Hurricane Melissa is still a Category 5 storm as it starts to move northward towards Jamaica.
I did a brief writeup on known space debris reentries on Oct 16, none of which match the UA1093 airliner incident
planet4589.org/space/misc/u...
West vent in Halema'uma'u, Hawaii Volcanoes National Park
West vent in Halema'uma'u, Hawaii Volcanoes National Park
#NPS #NationalParkService #HawaiiVolcanoesNationalPark
The recent storm in California has blanketed the Sierra high country with snow, including parts of Yosemite National Park (Image/Yosemite Conservancy) www.accuweather.com/en/weather-n...
Last night’s #HarvestMoon shining through the clouds.
The 22 degree halo & sun dogs were accompanied by a rare Parhelic Circle! It was faint, but my first time seeing one!
Another day of amazing atmospheric optics
Impressive sunset from Tropical Storm Imelda, which is ~900 miles away from central Pennsylvania.
Tropical swirls of three varieties
Fascinating satellite imagery of a strong low-pressure system creating hurricane-force winds approaching the Alaska panhandle.
A great display of Undulatus Asperatus clouds over Pennsylvania yesterday. They can be tricky to photograph, but it helped that they hung around for hours.
A volunteer holds a pizza box that was found in Yellowstone National Park.
Over 300 hats have been collected in Yellowstone National Park in 2025. A gust of wind is all it takes to blow a hat into a restricted area of the park.
Geologists at Yellowstone NP have picked up 13,000+ pieces of trash this year, including 300 hats, a pizza box with food still inside and even a stuffed koala bear: www.accuweather.com/en/leisure-r...
Fog permeating the valleys of the Mid-Atlantic and New England states dissipates in the morning light.
Autumn bird migration is well underway in Pennsylvania! Each expanding circle marks birds taking off from their roost at daybreak
Sunrise on Sept. 2, 2025, as seen from Apgar Mountain, Montana.
Beautiful September #sunrise over Glacier National Park this morning
September is the best month of the year, especially in terms of weather. The only drawback? We're losing too much daylight! www.accuweather.com/en/space-new...
A sycamore "moontree" growing in Hollidaysburg, Pennsylvania.
Bicentennial moon tree. This sycamore, planted May 5, 1976, was grown from a seed carried to the Moon aboard Apollo 14 by Astronaut Stuart Rossa, Command Module Pilot. Blair Country Bicentennial Commission.
This tree went to the moon!
This Sycamore is one of dozens of trees growing around the world that went to the Moon with Apollo14 while they were still seeds. It was planted in Hollidaysburg, PA to commemorate the bicentennial.
Half Dome and Clouds Rest, Yosemite National Park
Half Dome and Clouds Rest, Yosemite National Park
#NPS #NationalParkService #YosemiteNationalPark
