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December 21-22nd Winter Storm Part 3


Chicago Storm

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Haha!  That's about right.  I'm sure Justin, and the folks at DVN feel the same way lol. 

 

This is a nightmare laying out where the main snow axis is going to be...pretty much have GFS and Euro in one camp, NAM and SREF, and other short range stuff further W.  Sweating like I'm on my wedding night....

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No, that goes to 2/6/11.

 

2/6/11 makes the model performance with this system seem excellent in comparison.

 

The funny thing is the models haven't been way off from where they were when we started seriously tracking this thing, perhaps about 90 miles northwest of the consenus, but the flip flops back and forth, NW, SE, NW, SE, combined with the models diverging in the last 24 hours makes for a dizzying pattern of events.

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No, that goes to 2/6/11.

 

2/6/11 makes the model performance with this system seem excellent in comparison.

 

 

And for folks who have been around for a while, 12/24/02.  It's easy to give the models a pass in borderline situations (getting more mixing than expected when you're supposed to be just north of the rain/snow line, etc) but last minute 100-200 mile bodily shifts, not so much.

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That's nasty looking^

 

Wave spinning it's way towards western TX now. Water vapor loop.

 

http://www.goes.noaa.gov/GSSLOOPS/ecwv.html

 

Already over 2800 posts on this system.

 

Very impressive looking.  This moisture laden system is the kind of thing we dream of when we're in a pattern of moisture starved clippers that take hours to saturate the column. 

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what happened there?

 

As I believe michsnowfreak describes it, the day Detroit picked up 4-6" of Partly Sunny. 

 

http://www.meteo.psu.edu/~fxg1/NARR/2011/us0205.php

 

(note the date the thread was started)

 

http://www.americanwx.com/bb/index.php/topic/12575-feb-4th-5th-snow-event/

 

It just goes to show, as bad as the models are doing with this system, they've done MUCH worse recently. The fact that, in the grand scheme of things, they haven't changed from the idea of a moisture-laden winter storm impacting the sub-forum, and there hasn't been any wild swings in the track/temps since earlier this week, is impressive. 

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A light coating of ZR has already presented itself in downtown T.O this evening.

This very icy initial presentation is a foreboding of possible rare historic weather event here in T.O.

I was going to ask what the worst ice storm was for Toronto because none come to my mind. I don't know that much about ice storm history for southern Ontario. Someone from there might be able to answer.

 

I'm also not sure where to post our situation in, this or the other thread.

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That's nasty looking^

 

Wave spinning it's way towards western TX now. Water vapor loop.

 

http://www.goes.noaa.gov/GSSLOOPS/ecwv.html

 

Already over 2800 posts on this system.

 

That is incredible! you can clearly see both disturbances very well defined. def on course to phase very well ;) 12z runs should have a full sampling of both waves so maybe that will eliminate some of the model flip flop. that front def made it pretty south. if that low deepens to fast a more nw path would make sense. kinda hoping for a slowly strengthening system b/c I am on the fine line of seeing cold rain or major ice. man this has been a tough storm to forecast. which model will be right? :P

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I was going to ask what the worst ice storm was for Toronto because none come to my mind. I don't know that much about ice storm history for southern Ontario. Someone from there might be able to answer.

 

I'm also not sure where to post our situation in, this or the other thread.

The most disruptive one I can recall was around Jan 13-14 1968, it came after a heavy snowfall of about 30 cms and caused a lot of tree damage, power was out in some parts of the downtown (university) area for most of a week -- the storm was over a weekend but I recall the University of Toronto being either closed or some cancellations for several days. I was no longer residing in Ontario when the 1998 storm hit, but I remember a few bad ones in the 1980s in Peterborough.

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Wonder if we will have to worry about convective elements on the cold side of the storm, convective ZR, PL, SN? If you seen the yesterday as the low was near the baja, there was lightning with it..

I would say yes, some of the model soundings were showing some elevated instability, and it doesn't take much to get lightning with such strong dynamics that would be in place.

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Dtx pulls the trigger on ice storm warnings from i69 corridor south to 8 mile road

URGENT - WINTER WEATHER MESSAGE

NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI

326 AM EST SAT DEC 21 2013

...ICE STORM TO IMPACT PARTS OF SOUTHEAST MICHIGAN...

.A LOW PRESSURE SYSTEM WILL TRACK NORTHEAST OUT OF TEXAS

TODAY...MOVING THROUGH THE CENTRAL GREAT LAKES TOMORROW. HIGH

PRESSURE OVER ONTARIO WILL SUPPLY JUST ENOUGH COLD AIR IN THE LOW

LEVELS TO SUPPORT A WINTRY MIX OF PRECIPITATION NORTH OF

I-69...WITH FREEZING RAIN ALONG THE I-69 CORRIDOR TO NEAR EIGHT

MILE. FOR THE CITY OF DETROIT AND POINTS SOUTH...JUST A COLD RAIN

IS EXPECTED.

MIZ060>062-211700-

/O.UPG.KDTX.WS.A.0003.131221T1800Z-131222T1400Z/

/O.NEW.KDTX.IS.W.0002.131221T2200Z-131222T1200Z/

SHIAWASSEE-GENESEE-LAPEER-

INCLUDING THE CITIES OF...OWOSSO...FLINT...LAPEER

326 AM EST SAT DEC 21 2013

...ICE STORM WARNING IN EFFECT FROM 5 PM THIS AFTERNOON TO 7 AM

EST SUNDAY...

THE NATIONAL WEATHER SERVICE IN DETROIT/PONTIAC HAS ISSUED AN ICE

STORM WARNING...WHICH IS IN EFFECT FROM 5 PM THIS AFTERNOON TO

7 AM EST SUNDAY. THE WINTER STORM WATCH IS NO LONGER IN EFFECT.

HAZARDOUS WEATHER...

* FREEZING RAIN IS EXPECTED TO DEVELOP LATE THIS AFTERNOON...CONTINUING

INTO TONIGHT.

* ICE ACCUMULATIONS OF A QUARTER OF AN INCH TO HALF AN INCH ARE

EXPECTED.

* THE FREEZING RAIN COULD BE MIXED WITH SLEET AT TIMES...ESPECIALLY

DURING THE ONSET.

* NORTHEAST WINDS OF 10 TO 15 MPH WILL ADD STRESS TO THE ICE

COATED TREES AND POWER LINES.

IMPACTS...

* ICE ACCUMULATIONS ON TREES AND POWER LINES WILL LIKELY LEAD TO

POWER OUTAGES AS TREE DAMAGE OCCURS.

* THIS ICE STORM HAS THE POTENTIAL TO PRODUCE POWER OUTAGES

THAT COULD LAST FOR SEVERAL DAYS.

* EXPECT ROADS TO BECOME ICY LATE TODAY AND ESPECIALLY THIS

EVENING.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

* AN ICE STORM WARNING MEANS SEVERE WINTER WEATHER CONDITIONS

ARE EXPECTED OR OCCURRING. SIGNIFICANT AMOUNTS OF ICE

ACCUMULATIONS WILL MAKE TRAVEL DANGEROUS OR IMPOSSIBLE. TRAVEL IS

STRONGLY DISCOURAGED. COMMERCE WILL LIKELY BE SEVERELY IMPACTED.

IF YOU MUST TRAVEL...KEEP AN EXTRA FLASHLIGHT...FOOD...AND WATER

IN YOUR VEHICLE IN CASE OF AN EMERGENCY. ICE ACCUMULATIONS AND

WINDS WILL LIKELY LEAD TO SNAPPED POWER LINES AND FALLING TREE

BRANCHES THAT ADD TO THE DANGER.

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