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Pattern April Thread

I know we are trying to get through this severe weather currently, but next Tuesday looks like another bad one. I sure hope not.
 
An article yesterday from CNN also acknowledged what has been a shift in the location where tornadoes seem to be occuring more frequently as a late (Dixie Alley), even calling into question whether "Tornado Alley" still lives up to its name...

amp.cnn.com

Scientists are seeing a dangerous shift in early-spring tornadoes | CNN

This month has seen more tornadoes in the US than any March on record following this week’s severe weather outbreak.
amp.cnn.com amp.cnn.com
 
NorthDFWwx said:
An article yesterday from CNN also acknowledged what has been a shift in the location where tornadoes seem to be occuring more frequently as a late (Dixie Alley), even calling into question whether "Tornado Alley" still lives up to its name...

amp.cnn.com

Scientists are seeing a dangerous shift in early-spring tornadoes | CNN

This month has seen more tornadoes in the US than any March on record following this week’s severe weather outbreak.
amp.cnn.com amp.cnn.com
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The last few years it seems like MS and AL have really been ground zero for tornadoes.
 
Those studies do suggest the drying out of the atmosphere is part of the reason for the decreasing tornadic activity in the Plains, but I also suspect it has to do with the wind currents becoming progressively faster.

Systems get shoved off to the east so fast when they blow off the Rockies that it limits the amount of time for atmospheric recovery to support significant severe weather outbreaks, with the window for moisture return being limited the further west you get and updrafts getting sheared apart.

That's probably the same reason it's so difficult to get a storm system like the 1978 Blizzatd today.
 
LovingGulfLows said:
I don't think GA gets a lot of tornadoes honestly...maybe NW GA, but outside of that area....not much.
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Yeah, downsloping from the Apps make it harder for tornadic to form & sustain themselves storms the further SE you go.

I know there was the March 2019 event, but that was a pretty rare setup.
 
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A reminder, we are probably gonna bake, especially the eastern SE, this ridge positioning and sfc high positioning is favorable for really really warm/hot days, I’m willing to be some mid/upper 80s if this look holds 4C0F4096-2C07-448D-8E16-29A43ADD5D0A.png4578D526-2B51-4DD2-94C0-53AC6F3AB8FC.png1830EE9E-4E7E-464C-8B45-8D68B02CF1D7.png
 
LovingGulfLows said:
I don't think GA gets a lot of tornadoes honestly...maybe NW GA, but outside of that area....not much.
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Northwest of 85 gets a lot. Being a life long local I can’t drive too long without passing an area I know a tornado went through.
 
EmersonGA said:
Northwest of 85 gets a lot. Being a life long local I can’t drive too long without passing an area I know a tornado went through.
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A 30-40 mile wide area from around Rome Ga over to Dahlonega and up towards Habersham county is a known corridor for them. 1994, 2011, and 2012 are great examples of this. Another area is southwest to southeast of ATL including the Newnan area.
 
LovingGulfLows said:
I don't think GA gets a lot of tornadoes honestly...maybe NW GA, but outside of that area....not much.
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The two things that have really protected a large part of N GA and especially areas east of Atlanta has been the wedge and timing of severe events.

The wedge has always been a shield for the severe storms and almost always kills storms moving in. Although it’s effects are less further west.

The timing is probaly a little less effective since there are a number of examples of morning and overnight tornadoes in N GA, but it does make at least some difference. I would say about 70-80% of N GA severe events have occurred primarily in the overnight or morning hours. It’s not often we get severe events that take place in the afternoon and evening hours.

Speaking of which, when was the last formidable tornado/severe weather threat that primarily occurred in the daytime across N GA? The last I can remember were March 15, 2008 and April 10, 2009.
 
BufordWX said:
The two things that have really protected a large part of N GA and especially areas east of Atlanta has been the wedge and timing of severe events.

The wedge has always been a shield for the severe storms and almost always kills storms moving in. Although it’s effects are less further west.

The timing is probaly a little less effective since there are a number of examples of morning and overnight tornadoes in N GA, but it does make at least some difference. I would say about 70-80% of N GA severe events have occurred primarily in the overnight or morning hours. It’s not often we get severe events that take place in the afternoon and evening hours.

Speaking of which, when was the last formidable tornado/severe weather threat that primarily occurred in the daytime across N GA? The last I can remember were March 15, 2008 and April 10, 2009.
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Yeah the years I mentioned earlier had decent timing and no CAD. I agree though that for some reason most events do come through GA in an unfavorable time frame, reducing the threat. The Newnan tornado last spring was a major exception to this. As far as daytime threats go April 2017 comes to mind although this was for east central GA. April 2009 may very well be the last time the area north of I-85 had a serious daytime threat.
 
That April 2017 threat was supposed to be a daytime threat for all of GA, but heavy rain and weaker storms killed it north of I-85. I still wonder what that day would have been like if the heavy rain and storms had not been there.
 
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