Another Aleutian low reached 948 mb on February 10th.
On February 11th, hard freeze warnings (dark blue) were issued down to the Gulf Coast, and winter weather advisories (purple) extended into central Texas:
On February 13th, yet another Aleutian low reached 944 mb.
These Aleutian lows were likely related to La Nna, which tends to favor a stronger polar jet stream.
This has been an especially brutal winter in parts of Europe, where over 550 people were killed, and 140,000 were trapped by snow. Some villages in Italy were buried under more than 9 feet of snow. In Romania, some people had to tunnel through 15 feet of snow to get out of their homes (video). The Danube River nearly froze over for the first time in 25 years. Ice in the Kerch Strait trapped 126 ships in the Sea of Azov. Heavy snow hit as far south as Turkey, and cold reached northern Africa.
A major tornado outbreak hit from Kansas to Tennessee on February 28-29, killing 13. 6 were killed by an EF4 in Harrisburg, IL on the morning of the 29th. This outbreak also included the first February tornado ever reported in Nebraska. By 6Z (midnight central time) on the 29th, a 70+ knot low level jet had spread over the warm sector across southern Missouri, producing helicity values off the charts even using the 0-1 km layer.
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