Chicago Storm

That’s not the reason for the different look at that time. Need to be looking aloft, not at that surface high. .

On the flip side, the 12z GEM shifted SE...and it was already well SE of the GFS.

Several changes aloft when taking a look at things... -Lead wave on Mon/Tue is further north, and ends up tracking further NE overall. -Much more ridging out across Ontario/Lakes/OV/Etc, due in part to aforementioned lead wave being north and handling of the PV in Canada. This is one factor in giving the overrunning portion a different angle. -Main trough in the West is more consolidated and the main wave is not elongated/lagging, thus you end up with a nicer and more neutral tilt at the base fairly easily. This leads to the ejection/development of a much more organized main storm system.

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Ton of changes favoring north there. .

0z GEFS mean… .

Slower/positive tilt/elongated final wave seems to be the trend the past several runs on most guidance. Still several days away obviously, but by the 0z suite on Sunday you’d like to see that trend reversed. .

correct. he moved to the pac nw a few years ago. .

never to be seen again after being up in alaska for a while. .

MSP crusher. .

we had a brief discussion on that recently. he’s been mia for a few years now. .

what we really need is a moneyman return. .

12z GEFS and EPS mean… .

Final snowfall totals of 3.3” ORD and 7.2” MDW.

Meso-low offshore from the Lake/Cook Co border… .

It’s fluff. The 6.4” at MDW as of 6AM was off of 0.27” liquid. .

Frank near MDW with 6.4” as of 6am. .

Will be interesting to see the totals out of the Winnetka area. The core of the band has been hanging around there for 3+ hours now. .

1.1” ORD as of 6am. .

Snowing fairly well here at ORD, with several tenths so far. Looks like the main band is stalling just east of here.

Ground dusted here at ORD, with this synoptic/lake enhanced combo ongoing for now. Lake convergence band is steadily pushing west on TMKE. However, the snows look far from impressive for now.

It’s available on GrLevel 3 and RadarScope. .

HRRR/3km NAM/NSSL/FV3/ARW all have a corridor of 6-12” in the Lake/Cook Co border area. .

This is suddenly becoming a more interesting overnight shift at ORD. Obviously dependent on trends being correct, and the LE not doing anything wonky. .

Early 0z guidance is shifting LE westward, targeting more from Kenosha down into Lake and N-C Cook Co’s. .