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Pattern Freezing Ferocious February

Webberweather53 said:
MJO amplitude is determined by the sums of the squares of the amplitude on both the sides of the diagram which is all taken under the square root because in order to average standardized data like the PCs that make up the MJO you have to do this otherwise it's not the same. Averaging standardized numbers doesn't follow the same procedure as actual numbers
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Oh okay, I'm sorry excuse my ignorance.
 
Storm5 said:
Euro has 70s up and down the east coast in the extended. I hope it's right . My power bill was 323 last month. I had three separate events this winter with the big one in early December. I give it an A+ for sure

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I’ll give winter here a B-. Temp wise it was ok but to miss out on any real accumulating snow sucks.


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CAE was a B- for cold early on, this month will kill its grade.
For Wintry precip, it gets a D. I'd like to slap a F on it but we atleast saw flurries. The amount of jokes Mother Nature played on Central SC was a bit harsh. Missed in every single direction. Today 4 years ago we were in the middle of our last major winter storm to hit the Columbia, SC area. Richland county hasn't been under a Winter storm warning since.
 
Webberweather53 said:
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Intuitively this makes sense if we consider the variables at play which steer planetary-scale ridges and troughs. While background advection by the mean wind is wanting to push them to the east, planetary vorticity advection attributable to the difference in the coriolis parameter across them (from the crest of the ridge to its base) actually pushes it towards the west. For ridges that are of enough amplitude and scale, this planetary vorticity advection term actually wins out and the ridge moves westward against the mean flow, which in this case means our blocking high begins closer to Scandinavia and with time it progresses towards Greenland and eventually the Baffin Bay & northern Canada. All the while (in many cases) this ridge is being dampened (or weakened) by radiative & diabatic processes/fluxes as well as dispersion and ongoing alterations in the background flow (particularly ageostrophic geopotential flux/downstream development of Rossby Wave trains from pre-existing or newly forced ones). Retrograding, strong high-latitude blocks are more commonly observed over the North Pacific due to the zonal asymmetry of the jet but the North Atlantic is no stranger to them either. Thus, similar to how many -WPO blocks begin as -EPO ridges over Alaska & NW Canada, as Masiello/HM has correctly pointed out, most -NAO blocking highs start out as "east-based" or "SCAND" (Scandinavian) highs that retrograde west towards Greenland and northern Canada becoming "west-based -NAOs". Occasionally, we'll see very intense cyclonic wave breaking over and just off of eastern North America force a temporary blocking high that noses up from the North Atlantic and into Greenland but the pattern response is often different and these blocks tend to be more transient in nature unless the background forcing is favorable for their continued amplification.
 
I think that it's too early to give winter a conclusive grade, but I'm currently giving it a solid B for my location. I recorded several nights in the teens (I occasionally go a winter without one teen even occurring) and recorded snow for the first time since January 29, 2014. In terms of negative aspects regarding this winter, I doubt that I will ever get over being one county too far north to receive any type of snow while places 45 miles to my SE received around four inches. Additionally, I have failed (hope that this changes) to break my eight year streak of not receiving at least one inch of snow.
 
Growing up in central Mississippi where I still live, back in the sixties and seventies we almost always started mowing the grass by early March. Climate change or not nothing has really changed.
 
Millibar-Monster said:
Growing up in central Mississippi where I still live, back in the sixties and seventies we almost always started mowing the grass by early March. Climate change or not nothing has really changed.
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Lately no matter what Enso state it's been seemingly like winter has ended in February now, usually shortly after the halfway point but this time seems as if it will be earlier.
 
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