Weather chaos looks set to reign this week, as near record-high temperatures, a deluge of rain and gale-force winds combine to provoke an avalanche of discussion among us Brits - and for once it's entirely justified.
Now heavy rain is predicted as Jonas, which will be called Gertrude once it makes its way to the British Isles, will lead to severe weather warnings for parts of north-west England, north Wales and Scotland.
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A lone New Yorker traverses an empty street in the wake of Storm Jonas on Sunday
The Met Office says up to 100mm of rain is expected in exposed uplands, while the Environment Agency (EA) has warned areas previously affected by flooding should make preparations.
Forecaster Charles Powell said: "The remnants of the US snow storm when it arrives will be rain from first thing across western Scotland and Northern Ireland."
Chris Wilding of the EA told the Press Association: "Our thoughts are with all those who have suffered serious flooding over the past few months, and it is once again vital that people prepare for heavy rainfall and the risk of further flooding.
"We will issue flood warnings and alerts where necessary as rivers respond to the rainfall, which could also inundate drains, so people need to be ready for flash flooding in some places."
People sail at Kingsbury Water Park as Britons enjoyed unseasonably warm weather this weekend
Meanwhile Sunday's temperatures came close to setting records for January's warmest. The maximum temperature hit 16.5C, putting it close to the 18.3C recorded in 2003.
The maximum temperature yesterday was 16.5C, putting it close to the 18.3C recorded in 2003 for the highest January temperature.
The Met Office is providing updates on the situation via Twitter, below.
WASHINGTON, USA - JANUARY 24: A father and son sled down the local hill in their neighborhood in Rockville, Md., USA on January 24, 2015. Winter Storm Jonas dropped more than 30 inches of snow in some area of the Washington region in a 3 day period. (Photo by Samuel Corum/Anadolu Agency/Getty Images) (credit:Anadolu Agency via Getty Images)
Sledding after Winter Storm Jonas(02 of08)
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WASHINGTON, USA - JANUARY 24: Sofie and Samuel sled down the local hill in their neighborhood in Rockville, Md., USA on January 24, 2015. Winter Storm Jonas dropped more than 30 inches of snow in some area of the Washington region in a 3 day period. (Photo by Samuel Corum/Anadolu Agency/Getty Images) (credit:Anadolu Agency via Getty Images)
Sledding after Winter Storm Jonas(03 of08)
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WASHINGTON, USA - JANUARY 24: Katie Monahan launches off a ramp as she sleds down the local hill in their neighborhood in Rockville, Md., USA on January 24, 2015. Winter Storm Jonas dropped more than 30 inches of snow in some area of the Washington region in a 3 day period. (Photo by Samuel Corum/Anadolu Agency/Getty Images) (credit:Anadolu Agency via Getty Images)
Sledding after Winter Storm Jonas(04 of08)
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WASHINGTON, USA - JANUARY 24: A boy wipes out as he sleds down the local hill in their neighborhood in Rockville, Md., USA on January 24, 2015. Winter Storm Jonas dropped more than 30 inches of snow in some area of the Washington region in a 3 day period. (Photo by Samuel Corum/Anadolu Agency/Getty Images) (credit:Anadolu Agency via Getty Images)
Sledding after Winter Storm Jonas(05 of08)
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WASHINGTON, USA - JANUARY 24: Families gather to sled down the local hill in their neighborhood in Rockville, Md., USA on January 24, 2015. Winter Storm Jonas dropped more than 30 inches of snow in some area of the Washington region in a 3 day period. (Photo by Samuel Corum/Anadolu Agency/Getty Images) (credit:Anadolu Agency via Getty Images)
Sledding after Winter Storm Jonas(06 of08)
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WASHINGTON, USA - JANUARY 24: A boy catches so air off a ramp as he sleds down the local hill in their neighborhood in Rockville, Md., USA on January 24, 2015. Winter Storm Jonas dropped more than 30 inches of snow in some area of the Washington region in a 3 day period. (Photo by Samuel Corum/Anadolu Agency/Getty Images) (credit:Anadolu Agency via Getty Images)
Huge Snow Storm Slams Into Mid Atlantic States(07 of08)
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TAKOMA PARK, MD - JANUARY 24: Marshal Webster digs his cars out of almost 20 inches of snowfall January 24, 2016 in Takoma Park, Maryland. Blizzard Jonas blanked the East Cost in snow, leaving 18 people dead, near-record snowfall from Arkansas to New York and heavy flooding along the coast. The storm, dubbed 'Snowzilla,' lasted into early January 24. (Photo by Chip Somodevilla/Getty Images) (credit:Chip Somodevilla via Getty Images)
Huge Snow Storm Slams Into Mid Atlantic States(08 of08)
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TAKOMA PARK, MD - JANUARY 24: Children play on top of a six-foot-tall pile of snow after almost 20 inches fell over the weekend January 24, 2016 in Takoma Park, Maryland. Blizzard Jonas blanked the East Cost in snow, leaving 18 people dead, near-record snowfall from Arkansas to New York and heavy flooding along the coast. The storm, dubbed 'Snowzilla,' lasted into early January 24. (Photo by Chip Somodevilla/Getty Images) (credit:Chip Somodevilla via Getty Images)