Extreme weather news and discussion

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caltrek
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Even Weak Tropical Cyclones Have Grown More Intense Worldwide – We Tracked 30 Years of Them
by Wei Mei and Shang-Ping Xie
November 29, 2022

Introduction:
(The Conversation) Tropical cyclones have been growing stronger worldwide over the past 30 years, and not just the big ones that you hear about. Our new research finds that weak tropical cyclones have gotten at least 15% more intense in ocean basins where they occur around the world.

That means storms that might have caused minimal damage a few decades ago are growing more dangerous as the planet warms.

Warmer oceans provide more energy for storms to intensify, and theory and climate models point to powerful storms growing stronger, but intensity isn’t easy to document. We found a way to measure intensity by using the ocean currents beneath the storms – with the help of thousands of floating beachball-sized labs called drifters that beam back measurements from around the world.
Read more here: https://theconversation.com/even-weak- ... s-194891


Image
Over 1,100 drifters are currently operating around the world. The U.S. (blue dots) operates over 430 of them. France (orange) has about 200. Each typically lasts about a year.
NOAA


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Examples of NOAA’s drifters and the drogue that helps stabilize them.
NOAA
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wjfox
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weatheriscool
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Heavy rain, wind, snow blows through California into Sierra
Source: AP

By SCOTT SONNER today

RENO, Nev. (AP) — A winter storm packing powerful winds, heavy rain and potentially several feet of snow in the Sierra Nevada shut down mountain highways, toppled trees and triggered flood watches and avalanche warnings on Saturday from the coast of Northern California to Lake Tahoe.

More than 250 miles (400 kilometers) of the Sierra remained under a winter storm warning at least until Sunday night or early Monday from north of Reno to south of Yosemite National Park.

As much as 4 feet (1.2 meters) of snow is expected to fall by the end of the weekend in the upper elevations around Lake Tahoe, and as much as 6 feet (1.8 meters) in more remote parts of the Sierra to the north and south.

A 70-mile (112-kilometer) stretch of eastbound U.S. Interstate 80 was closed “due to zero visibility” from Colfax, California to the Nevada state line, transportation officials said. Chains were required on much of the rest of I-80 in the mountains from Reno toward Sacramento.

Read more: https://apnews.com/article/california-s ... osition_05
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erowind
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Post by erowind »

Was the winter of 2010 brutal for brits too. I remember it fondly, we got 5 feet of snow here!
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erowind wrote: Mon Dec 12, 2022 7:21 pm Was the winter of 2010 brutal for brits too. I remember it fondly, we got 5 feet of snow here!

Indeed it was!

Old video I made that year, back when I lived in South London –


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A massive coast-to-coast winter storm is bringing blizzard conditions and threatening tornadoes
Source: CNN

By Nouran Salahieh, Rob Shackelford and Joe Sutton,

Published 3:44 AM EST, Tue December 13, 2022

CNN
A giant winter storm cutting through the US is bringing severe weather, with dangerous blizzard conditions in the Great Plains, icy weather in the upper Midwest and severe storms along the Gulf Coast Tuesday.

There are more than 10 million people across 17 states under winter weather alerts as the massive storm continues to head east.

The coast-to-coast storm – which walloped the West over the weekend – is expected to strengthen as it pushes eastward Tuesday, and stall across the central Plains into Thursday, snarling travel amid blowing snow and freezing rain.

Meanwhile, the southern end of the storm is expected to bring late-season tornadoes along with strong thunderstorms.



Read more: https://www.cnn.com/2022/12/13/weather/ ... index.html
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weatheriscool
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US storm brings tornadoes, blizzard-like conditions; 2 dead (UPDATE)
Source: AP

By JAMIE STENGLE and STEPHEN GROVES 12 minutes ago

DALLAS (AP) -- A destructive storm marched across the United States, spawning tornadoes that touched down in parts of Texas, Oklahoma and Louisiana, where two deaths were reported, and it delivered blizzard-like conditions to the Great Plains and threatened more severe weather Wednesday in the South.

A young boy was found dead in the Pecan Farms area of Keithville, Louisiana, where his home was destroyed Tuesday after a tornado hit about 10 miles (16 kilometers) from Shreveport, and his mother's body was found nearby under debris, the Caddo Parish Sheriff's office said early Wednesday.

First responders were searching the area, but no one else had been reported missing, the sheriff's office said.

Five tornadoes were confirmed across north Texas as of Tuesday afternoon based on video and eyewitness reports, but potentially a dozen may have occurred, the National Weather Service in Fort Worth, Texas, reported.

Original post below: https://apnews.com/article/storms-weath ... osition_05
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Drought emergency declared for all Southern California
Source: Los Angeles Times
As California faces the prospect of a fourth consecutive dry year, officials with the Metropolitan Water District of Southern California have declared a regional drought emergency and called on water agencies to immediately reduce their use of all imported supplies.

The decision from the MWD’s board came about eight months after officials declared a similar emergency for 7 million people who are dependent on supplies from the State Water Project, a vast network of reservoirs, canals and dams that convey water from Northern California. Residents reliant on California’s other major supply — the Colorado River — had not been included in that emergency declaration.

“Conditions on the Colorado River are growing increasingly dire,” MWD chairwoman Gloria Gray said in a statement. “We simply cannot continue turning to that source to make up the difference in our limited state supplies. In addition, three years of California drought are drawing down our local storage.”

Officials said the call for conservation could become mandatory if drought conditions persist in the coming months, which some experts say is likely. By April, the MWD will consider allocating supplies to all of its 26 member agencies, requiring them to either cut their use of imported water or face steep additional fees.
Read more: https://www.latimes.com/environment/sto ... california
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