Earth Changes
It is important to note that seismic activity is will likely continue northwest of Þorbjörn, and earthquakes over M4.0 could be found in populated areas. Triggered seismic activity can also be expected in the coming days because the magma intrusion causes increased tension in the area. Rockfall can occur following strong earthquakes, so it is important to be cautious on steep slopes.
On Wednesday morning, snow was on the ground in 17.9 percent of the Lower 48, according to the National Oceanic and Atmospheric Administration.
Locations from eastern Minnesota to western New York saw snow on Halloween — even enough to shovel in Minneapolis; Milwaukee; Muskegon, Mich.; and Buffalo. Areas downwind of Lakes Erie and Ontario were also blanketed early Wednesday, including Cleveland and Akron, Ohio, while several inches were anticipated along some of the west-facing slopes of the Appalachian Mountains.
This latest batch of wintry weather comes on the heels of two other storm systems that brought snow to the Mountain West, the northern Plains, the Midwest and northern New England over the past week.
Strong winds and heavy rain are barrelling across southern England, with gusts of more than 110mph (160km/h) recorded in northern France and the Channel Islands.
Major incidents have been declared in parts of England with hundreds of schools shut and train services suspended.

The Klyuchevskoy volcano, one of the highest active volcanoes in the world, erupts in Russia's northern Kamchatka Peninsula, Russian Far Eat, on Wednesday, Nov. 1, 2023.
The eruptions from the Klyuchevskaya Sopka volcano sent ash as high as 13 kilometers (8 miles) above sea level, officials said.
There were no reports of injuries, but officials ordered schools in Ust-Kamchatsk and Klyuchy closed as a precaution. Each town has a population of about 5,000. Klyuchy is located about 30 kilometers (20 miles) from the volcano and Ust-Kamchatsk 50 kilometers (30 miles) away.
Dozens of properties have been damaged as firefighters battle to contain more than 200 blazes across the states amid windy, dry conditions.
Queensland's premier, Annastacia Palaszczuk, told reporters on Tuesday evening she had witnessed "very distressing" scenes on the ground, particularly in the hard-hit community of Tara.
"Some people have lost everything," she said. "I think everybody is feeling absolutely broken with what's been happening out there."
SPD says they responded to reports of an animal attack at a home on East Walton Avenue near North Nevada Street just after 8 p.m. Tuesday night when officers arrived and found that a child was attacked by the family's dog.
SPD says the child died from his injuries despite the efforts of first responders.
SPD says family member's attempts to protect the child led to the dog being severely hurt, and officers ultimately euthanized the dog at the scene.
Tod Gendle, 55, was killed by a four-metre great white while surfing near Granite Rock, close to Streaky Bay - about 700km from Adelaide - on Tuesday.
Friends watched in horror as he was dragged underwater. His body has still not been found.
On Wednesday afternoon, part of his board and a piece of his wetsuit were recovered.
Mr Gendle's family issued a statement thanking the police for their help.
The quake struck at a depth of 36.1 kilometers (22.5 miles) on the west of Timor Island near the city of Kupang, according to the US Geological Survey.
Indonesia's geophysics agency, or BMKG, said the quake had a higher magnitude of 6.6.
The tremor was strongly felt in Kupang on the island split between Indonesian territory in the west and the sovereign state of East Timor in the east, according to an AFP journalist, but no casualties were reported.

On November 1, 2023 the California Highlands fire the fire was mapped at 2,200 acres and 0% contained.
A large wildfire in Southern California continues to rapidly spread after destroying multiple structures and forcing evacuations in Riverside County.
The Highland Fire broke out Monday afternoon near Highlands and Aguanga Ranchos roads, the Riverside County Fire Department said. As of the latest update, the fire is currently mapped at more than 2,400 acres and is 15% contained.
More than 300 firefighters are working to put out the fire that's destroyed at least seven structures and damaged six others as of Tuesday, Cal Fire officials reported. More than 2,300 structures are threatened by the blaze, according to Cal Fire.
Comment: Oppenheimer Ranch are providing regular reports on the uptick in Iceland, and elsewhere:
See also: Ground uplift continues at Thorbjorn Complex, volcano-tectonic unrest affecting wide area of Reykjanes Peninsula, Iceland