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March 2011 general obs/discussion thread


snowstormcanuck

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The average high temp right now in la crosse is 42. We can call march winter and it can indeed be very wintery but to not expect and except drastic warm ups in march is as unrealistic and expecting warm and sunny everyday imo. There is a reason that the average high is up too 42 even in la crosse.

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GFS 12z also shows a decent rain event developing in eastern parts of Central states and moving through towards the SE/Mid Atlantic states in the 4-5 day period. Will be interesting to see whether it comes off.

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^Story of the year up here with nothing cutting. It has been pretty dry lately with the southern storm track and it doesn't look to change anytime soon.

Checking the 0z EURO, there was some continuity, although the 12z is really going to town with that blocking. OP GFS is warmer though.

Don't worry though. A blocking pattern (what the EURO is showing) is what JB is predicting for the end of March. So the chances of it verifying are next to nil.

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Checking the 0z EURO, there was some continuity, although the 12z is really going to town with that blocking. OP GFS is warmer though.

Don't worry though. A blocking pattern (what the EURO is showing) is what JB is predicting for the end of March. So the chances of it verifying are next to nil.

Yes! What exactly is a blocking pattern? I am new to some of this stuff. Is it a permanent area of high pressure that moves around in Canada that forces a further south storm track?

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Spring Outlook from DTX

http://www.crh.noaa.gov/images/dtx/Spring%202011%20Outlook%20for%20Southeast%20Lower%20Michigan.pdf

Cool, normal to a bit above normal precip, and "feast or famine" in terms of severe weather.

Bill Deedler also mentions at the end of the outlook that this will be his last outlook and that he is retiring from the NWS. :(

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Yes! What exactly is a blocking pattern? I am new to some of this stuff. Is it a permanent area of high pressure that moves around in Canada that forces a further south storm track?

blocking just means that the upper atmosphere becomes so amplified that various troughs and ridges are nearly stationary. Generally the "block" is in reference to the ridge, and the downstream troughs are considered "blocked" because of it.

Not sure if a -NAO block is its own type of specific blocking or whether it fits into some of the more generalized typologies (like "rex" or "omega"). But basically the ridge over Greenland "blocks" the vortex over Atlantic Canada forcing cold air to flood the NE quadrant of the continent and forcing storms in the Plains to shear E/ESEward.

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Spring Outlook from DTX

http://www.crh.noaa....%20Michigan.pdf

Cool, normal to a bit above normal precip, and "feast or famine" in terms of severe weather.

Bill Deedler also mentions at the end of the outlook that this will be his last outlook and that he is retiring from the NWS. :(

I know, do NOT want to see him retire! Best outlooks and season reviews in the business, love his past weather stories...and hes probably the only person who knows Detroits climate history better than myself. A bit of good news is that he lives in Livonia and does plan to stay active in the weather field!

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Models showing a lot of fluidity right now but that's a sweet looking -PNA/-NAO overrunning pattern by D10 on the EURO.

f240.gif

Hi Mitch, would the pattern your depicting be one that keeps things mild, not warm, not cold and drier? What do you think I can expect with this pattern?

I checked the ensembles and the PNA and NAO go negative, and most ensembles show the AO positive, the majority of them anyway. I know the NAO would favor the east coast for the wet weather which they don't need, but for us will it be time to get out in the yard and start working?

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Models showing a lot of fluidity right now but that's a sweet looking -PNA/-NAO overrunning pattern by D10 on the EURO.

f240.gif

Hi Mitch, would the pattern your depicting be one that keeps things mild, not warm, not cold and drier? What do you think I can expect with this pattern?

I checked the ensembles and the PNA and NAO go negative, and most ensembles show the AO positive, the majority of them anyway. I know the NAO would favor the east coast for the wet weather which they don't need, but for us will it be time to get out in the yard and start working?

Who's Mitch? Is this directed at me?

-NAO has decreasing effects as you go south and west from New England. Were it to materialize, I'd guess northern Illinois would probably be removed from the best snow/ice threat zone, but it might suppress the true springtime warmth just to your south.

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Who's Mitch? Is this directed at me?

-NAO has decreasing effects as you go south and west from New England. Were it to materialize, I'd guess northern Illinois would probably be removed from the best snow/ice threat zone, but it might suppress the true springtime warmth just to your south.

Good analysis Mitch. :lol:

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Who's Mitch? Is this directed at me?

-NAO has decreasing effects as you go south and west from New England. Were it to materialize, I'd guess northern Illinois would probably be removed from the best snow/ice threat zone, but it might suppress the true springtime warmth just to your south.

Thanks Canuck, thought Mitch had posted that, old age equates to poor vision..lol, thanks for your input, the gfs also shows it cooler here overall towards the latter stages of the month.

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Today is the 20th anniversary of one of central Indiana's largest ice storms. This area was especially hard hit. Back home in Kankakee it was all snow with amounts up to a foot.

1991 A 2 DAY ICE AND SNOW STORM IN THE NORTHERN HALF OF THE

STATE BRINGS UP TO 3 INCHES OF ICE...12 INCHES OF SNOW AND

WIND GUSTS TO 40 MPH.

1991 -- As northern Indiana received heavy snow, including 12" at Plymouth,

central Indiana had a destructive ice storm.

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Coming up far short on temps today. Thick clouds and strong west winds blowing over the snowfields of SE MN aren't allowing the temps to go anywhere. Sitting in the mid 20F's.

Was in Rochester, MN yesterday and could really tell that they had far more snow left then here in La Crosse.

Euro still looks good for a chance at 60F next week...

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Coming up far short on temps today. Thick clouds and strong west winds blowing over the snowfields of SE MN aren't allowing the temps to go anywhere. Sitting in the mid 20F's.

Was in Rochester, MN yesterday and could really tell that they had far more snow left then here in La Crosse.

Euro still looks good for a chance at 60F next week...

I would stick with the Euro for the long--it has been leading the way and the GFS has consistently been a tad too far S with all off these Pacific waves ejecting through the Rockies.

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