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December 18-20 Winter Storm Discussion


Chicago WX

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I see what's happening, along with rumors of the Apocalypse, things are lining up just right so Chicago gets its first measurable snow shortly after they would set their record for latest first measurable, and Milwaukee will do the same. Our date: December 26th :axe: lol. Anyways, way too much uncertainty exists.

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Well, at least the models aren't jerking us around. No 970mb bombs over State College, PA that never had a snowball's chance in hell at verifying. It was either an EC focused event, and now, maybe one focused to our west.

Either a system goes to far south for us and were left cold and dry or a system goes to our west and we awarm up and get rain. We just can't seem to win in T.O in weather and sports :axe::lmao:

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Either a system goes to far south for us and were left cold and dry or a system goes to our west and we awarm up and get rain. We just can't seem to win in T.O in weather and sports :axe::lmao:

You're forgetting the Arrrrrggggooooos!

Canadian model doesn't bode well for Ontario, barely even any back-side precipitation on the system. Maybe some lake effect as this thing passes if 850mb temps can get a little cooler. Never mind looks like surface temps will be too high.

GFS gives us a shot at some snow:

iEVCy.png

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You're forgetting the Arrrrrggggooooos!

Canadian model doesn't bode well for Ontario, barely even any back-side precipitation on the system. Maybe some lake effect as this thing passes if 850mb temps can get a little cooler. Never mind looks like surface temps will be too high.

GFS gives us a shot at some snow:

iEVCy.png

Argos don't count haha. I'm counting on the jays to make some noise next season.

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12z Euro looks really nice too.

Pretty good dumping for Detroit/Northern Indiana/Toronto.

I am now mildly but catiously interested in this storm again.

Wow, the Euro must look really different from the GFS. According to that model, this storm is mostly rain. Hope the Euro is right.

It does look like arctic air rushes in by next weekend.

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Yeah, I wish we could calm things down. It's hard to be optimistic with how things have gone but this type of setup with fast flow/multiple waves is notorious for model fits so something is telling me to not throw in the towel on snow chances just yet.

Good call. Just enough separation between waves being shown on most guidance today for Monday-Tuesday.

post-525-0-14846300-1355536517_thumb.gif

This doesn't have the makings of a big snow storm but if there is enough room for that wave to amplify like today there could be a swath of a few inches. I'm more excited about the end of the week but that's for another thread.

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Well, at least the models aren't jerking us around. No 970mb bombs over State College, PA that never had a snowball's chance in hell at verifying. It was either an EC focused event, and now, maybe one focused to our west.

It wasn't too far from that when Tim started this thread. A 984mb low over south central OH:

post-830-0-42880200-1355538176_thumb.gif

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For some reason my phone isnt copy/pasting: this morning (12/15) LOT AFD has some relevant discussion on a Thursday (12/20) potential event. Not much but the phrase "potential winter storm" coming from the LOT guys got me a little tingly.

327 AM...MULTIPLE FORECAST CONCERNS/CHALLENGES THROUGH THE PERIOD

THIS MORNING INCLUDING THE POTENTIAL FOR A STRONG WINTER STORM TO

AFFECT THE REGION NEXT THURSDAY...

BY WEDNESDAY AFTERNOON...LOW PRESSURE WILL BE DEVELOPING OVER THE

SOUTHERN PLAINS AS AN UPPER LEVEL TROUGH DIGS ACROSS THE MID

SECTION OF THE COUNTRY. WHILE SPECIFICS AND TIMING STILL VARY...

ECMWF AND GFS ARE IN FAIR AGREEMENT FROM THIS DISTANCE WITH A

DEEPENING STORM MOVING NORTHEAST ACROSS OR NEAR NORTHERN IL BY

THURSDAY AFTERNOON AND TO NEAR DETROIT FRIDAY MORNING. EXACT

TRACK WILL OBVIOUSLY HAVE MAJOR IMPACTS ON THE SPECIFICS BUT GIVEN

THE CURRENT TRENDS...LOOKS LIKE THURSDAY MAY END UP BEING FAIRLY

MILD AND WET UNTIL THE LOW PASSES AND PRECIP TRANSITIONS TO SNOW.

OF COURSE A SHIFT OF JUST 50 OR 100 MILES WILL COMPLETELY CHANGE

THE FORECAST. THUS CONFIDENCE IS MEDIUM REGARDING THE STORM... BUT

LOW REGARDING PRECIP TYPE AND TIMING. ONE ADDITIONAL ITEM OF NOTE

IS HOW STRONG THE WIND FIELD COULD END UP BEING WITH THIS STORM

AND IF...OR WHERE...ANY SNOW DOES FALL...WINTER WILL CERTAINLY

ARRIVE/RETURN IN FULL FORCE. CURRENTLY FORECAST SOUNDINGS SUPPORT

GUSTS 35-40 KNOTS AT THE SURFACE WHICH WOULD CAUSE PROBLEMS

REGARDLESS OF PRECIP TYPE. CMS

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