Spring 2015 thread (Northern Hemisphere) (Alabama, perfect, climate, snowing)
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There's the digging trough with very cold temps at the mid levels. 1028mb Canadian High dropping in.
12z balloon launch in Nashville confirms its below freezing above 4300 feet.
In Atlanta it's over 10,000 feet.
Roanoke its over 3900 feet. You can see why the Virginia mountains are getting snow. Moisture with the front and crashing temps up there.
Progress towards a warmer eastern two thirds? And I like the fact that the Plains are showing signs of warming. This bodes well for the Midwest for the summer (I hope)
Progress towards a warmer eastern two thirds? And I like the fact that the Plains are showing signs of warming. This bodes well for the Midwest for the summer (I hope)
and it's not a coincidence that there is drought development in the Plains
March will still end up here being well below average. Jan was -2.2F, Feb -10F, and now March is running -4F.
When will this ever end? Far too many teleconnections impact North America compared to other continents. We have NAO, AO, PNA, EPO, and WPO. This winter when both the AO and NAO stayed mostly positive, hence the warmer winter again in Western Europe, we got slammed by the PNA and EPO. I assume the PNA and EPO have minimal impact on winter in Europe.
This is why N. America is so unstable in winter. We have too many weather teleconnections compared to elsewhere. Heck, are people aware that though Antarctica is far, far colder than the Arctic, there is rarely a sudden stratospheric warming over the south pole and hence no breakdown of the southern polar vortex. If it did break down, I'll bet places in southern Australia and NZ would get some serous cold at times. But that vortex is much stronger and hence doesn't tend to weaken and break down.
The Antarctic polar vortex is more pronounced and persistent than the Arctic one; this is because the distribution of land masses at high latitudes in the Northern Hemisphere gives rise to Rossby waves which contribute to the breakdown of the vortex, whereas in the Southern Hemisphere the vortex remains less disturbed.
March will still end up here being well below average. Jan was -2.2F, Feb -10F, and now March is running -4F.
I just checked, and I don't know why we are in the white or neutral zone for March, because thus far ORD is running 2.9F below averages while MDW is 1.5F below average
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When will this ever end?
A damn good question. And you are absolutely right, we have to deal with 240572340 teleconnections in North America thought there is some encouraging news out there if you are a warm weather fan. After the first 7-10 days of April, there may be a big pattern flip though most of the warm up will be centered over the Midwest and Plains. Unfortunately for you, the Northeast looks to remain coolish with some positive anomalies entering Pennsylvania
Might be the coldest March on record following the coldest February on record. [Well tied depending on station]
#EndlessCold
March 2015: 26.60°F, previous record 26.87°F. Five days not in the record, but the remaining will mostly average warmer than the month so far, so being #2 is more likely than #1.
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