Spring 2014 (March-May) - Northern Hemisphere (Orlando, palm, tornado, snow)
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Here is the 500mb depiction of the cold shot coming in the 6-10 day period
Does anyone see even Spring showing up for the eastern 2/3rds anytime soon? Not me, nor do I see this pattern changing. I think we will be stuck in it for the next 23094584309845 months.
If you're right about this, I will be relocating down to North Texas in a Heartbeat, and I am sure all the climate change alarmist nuts will be claiming that this is the new normal, which would really be a pain in the $%$^.
Thanks Dan for chiming in. I like the Top down approach and agree which I think nei was saying too that details and factors like radiational cooling, solar warming, ect play a role in surface temps as well but does not control the whole flow or temps at the mid level..
Current maps.
A look at the 850mb temps and metars on left. Pink = freezing line at 4500'. Temps and Radar on right.
Very warm at the mid levels down south this evening.
Just nice snows around DC/Baltimore this late evening. In talking about 850 mb/surface.... Surface heating can impact of course 925 mb temps but in most locations 850 mb level is well above the immediate boundary layer and any influences are quite weak. As been stated it would act to tighten the temp gradient in the very lowest levels.
Of course in the higher elevations, high plains, you are above 850 mb level so you look at more 700 mb temps....
Just nice snows around DC/Baltimore this late evening. In talking about 850 mb/surface.... Surface heating can impact of course 925 mb temps but in most locations 850 mb level is well above the immediate boundary layer and any influences are quite weak. As been stated it would act to tighten the temp gradient in the very lowest levels.
Of course in the higher elevations, high plains, you are above 850 mb level so you look at more 700 mb temps....
Something I didn't touch on in my earlier posts to nei is the 925 level.. Hard to do in 1 or 2 posts. Thanks for clarifying and its nice to retouch and reconfirm a subject I thought I was familiar with. Learned a few extra points as well. So I appreciate the conversation between all of us. It's good to get the correct info out in a public forum as well.
Another thing I didn't touch on is being on a mountain at 6000' might be considered "surface" there at that point but it's technically a little above the 850mb level so like you said look at the 700mb level to see what the pattern/flow/temps will bring. Top down.
Anyway... A look at the current Map.. March 17, 2014. Not even Long Island getting some action.
Seeing some reports of 4-8", school/Business/Flight delays in the Mid Atlantic. I'll post some pics and snow total map later..
Everyone interested in why this winter/early spring has been so cold for so much of the country and what is in store for us later this spring and summer needs to watch this 30 minute very technical video (lots of graphics)
Current temp map for France, ranging from 43°F in the North to 80°F in the South:
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If you're right about this, I will be relocating down to North Texas in a Heartbeat, and I am sure all the climate change alarmist nuts will be claiming that this is the new normal, which would really be a pain in the $%$^.
Below -20°C at 850 hPa in mid-March at 42-43N (lake Erie) would be impressive.
