Following the jet-stream across the North Atlantic, things get warmer, but also, much, much wetter.
London is used to rain, but this? The River Thames has burst its banks.
What British meteorologists say makes it sound like they may have already heard NOAA's Lapenta mention of hovering, long-lasting storms.
The Met Office, the UK's national weather service, said the recent series of winter storms "has been exceptional in its duration, and has led to the wettest December to January period in the UK since records began."
Some communities in low-lying areas in southwest England are looking more like the water-bound city of Venice, Italy. They have been under water since December.
And there's no letup in sight just yet.
Authorities have warned communities along the Thames that more flooding is on its way, as the river reaches its highest level in 60 years.
A powerful Atlantic storm that is blowing in on Friday will add to people's woes.
Where's that coming from? It's what's left of a storm that plastered the United States with snow and ice.
Let it snow!
Photos of Olympic cross-country skiers striding for miles in the snow in short sleeves were all the rage this week.
They illustrate how warm it has been in Sochi, Russia, at the Winter Games. Low temperatures have been well above freezing, and daytime highs have hit the 50s, NOAA says.
Spectators may find it pleasant to walk around in light jackets -- or amusing to sit in the sun in shorts and T-shirts.
But for the organizers, the warm weather, which Lapenta says is strongly influenced by that same jet-stream, has been no laughing matter.
They've had to crank up snow machines to keep some pistes white.
Sochi has been one of the warmest cities to host the Winter Games, NOAA says on its website.
But that's not really shocking, the climate agency says.
"Sochi sits in a marginally wintry zone along the Black Sea coast near the Caucasus Mountains," it says.
But with the current jet-stream pattern, marginally wintry does not seem to be enough to hold back balmier air.