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Midwest/Ohio Valley/Great Lakes Snow January 24-26


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Not to be a killjoy for those in the main axis across portions of IL/IN/OH/MI, but I wouldn't put too much stock in this snow maps showing a wide axis of 6-12" amounts.

Most foreign guidance is a drier/less snowy than American guidance. We've seen that battle many times in the past, and know how it often plays out. Would lean towards a solid corridor of 2-5" to 4-7" in the main axis, locally higher.

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URGENT - WINTER WEATHER MESSAGE
National Weather Service Chicago IL
213 PM CST Tue Jan 24 2023

ILZ006-013-103-104-250415-
/O.EXB.KLOT.WW.Y.0001.230125T0900Z-230126T0300Z/
Lake IL-DuPage-Northern Cook-Central Cook-
Including the cities of Waukegan, Buffalo Grove, Mundelein,
Gurnee, Naperville, Wheaton, Downers Grove, Lombard,
Carol Stream, Evanston, Des Plaines, Schaumburg, Palatine,
Northbrook, Chicago, Cicero, Oak Lawn, Oak Park, and La Grange
213 PM CST Tue Jan 24 2023

...WINTER WEATHER ADVISORY IN EFFECT FROM 3 AM TO 9 PM CST
WEDNESDAY...

* WHAT...Slippery travel due to falling snow expected. Total snow
  accumulations of 2 to 4 inches expected.

* WHERE...Lake IL, DuPage, Northern Cook and Central Cook
  Counties.

* WHEN...From 3 AM to 9 PM CST Wednesday.
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1 hour ago, Chicago Storm said:

Not to be a killjoy for those in the main axis across portions of IL/IN/OH/MI, but I wouldn't put too much stock in this snow maps showing a wide axis of 6-12" amounts.

Most foreign guidance is a drier/less snowy than American guidance. We've seen that battle many times in the past, and know how it often plays out. Would lean towards a solid corridor of 2-5" to 4-7" in the main axis, locally higher.

 

On 1/23/2023 at 11:59 AM, IWXwx said:

Me kicked back watching model run after model run having FWA in the sweet spot for max snowfall potential, while the ORD crowd laments a possible miss south and the Ohio group fretting about mixing issues :sizzle:

Me when the track takes a last minute 75 mile shift northwest or southeast:cliff:

I'm realistically calling for 5.5" here.

Thanks for giving me confidence in my call.

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Before things get bad here, I would suggest stopping in at Ventura's Mexican restaurant.  Welcome to T-Town!
https://venturasmexicanrestaurant.com/ 
To each their own, but if we're talking food there are better options. If you want a margarita it could be a good option.

Snow wise, the models are still looking good for Toledo. Hopefully we can get the first real snow blower worthy snow of the season.

Sent from my SM-G973U using Tapatalk

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“A localized "minima" in snow amounts and impacts may materialize between both bands near I-80 or the Kankakee River Valley.”

Will there be enough to cover the grass out this way? Hasn’t happened yet this winter. Heading into Feb and still haven’t been able to cover the leaves and grass.
 

Just one big prolonged November 


 

 

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31 minutes ago, King James said:
“A localized "minima" in snow amounts and impacts may materialize between both bands near I-80 or the Kankakee River Valley.”

Will there be enough to cover the grass out this way? Hasn’t happened yet this winter. Heading into Feb and still haven’t been able to cover the leaves and grass.
 

Just one big prolonged November 


 

 

Very possible we get little to nothing while places just to put north and south have snow on the ground. GFS has led the way on that scenario, remarkably. :arrowhead: HRRR onboard with that too. Think a final call of T-1” looks golden. And the weekend event looks to miss north. Good times! :lol:

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44 minutes ago, Stevo6899 said:

Hhr/rap both in the stronger/nw camp and looks good for detroit. Grain of salt I suppose looking at those past 12 hrs.

Seems like they may have initialized the low even 1-2mb weaker than it is now. So maybe possibly it could end up further nw if it ends up stronger. 

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23 minutes ago, StormChaser4Life said:

Seems like they may have initialized the low even 1-2mb weaker than it is now. So maybe possibly it could end up further nw if it ends up stronger. 

Yea I wouldn't be surprised to see the dry slot sneak into se mi. My early guess is what I've thought all along. Novi out to Jackson gonna jackpot, while NE/nw Ohio gets screwed over. Also areas to the east forecasted to get more, will end up with less.

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2 hours ago, michsnowfreak said:

DTX goes warning for Detroit south, 6-8"

 

 

Then issues an updated snowfall map with 6 inch line further north than before, lol. 

A rare nice-to-have for a sig S. Stream system is zero "other p-types" in my hourly at DTW. 

3rd bonus, lower DP's preserved a fair amount of patchy snow despite 40F and sun all damned day! 

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2 minutes ago, RogueWaves said:

Then issues an updated snowfall map with 6 inch line further north than before, lol. 

A rare nice-to-have for a sig S. Stream system is zero "other p-types" in my hourly at DTW. 

3rd bonus, lower DP's preserved a fair amount of patchy snow despite 40F and sun all damned day! 

Per usual they'll issue warnings for macomb/oakland after 6 inches of snow is on the ground.

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26 minutes ago, Stevo6899 said:

Yea I wouldn't be surprised to see the dry slot sneak into se mi. My early guess is what I've thought all along. Novi out to Jackson gonna jackpot, while NE/nw Ohio gets screwed over. Also areas to the east forecasted to get more, will end up with less.

Normally a $$ call but Downriver has had the hot hand the past 2 seasons so there's that arguing against

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2 minutes ago, RogueWaves said:

Normally a $$ call but Downriver has had the hot hand the past 2 seasons so there's that arguing against

True but this is the first respectable low pressure we've had in years take this track and not get sheared out by the time it gets to us. I could be wrong but I think we finally see the further nw bands than modeled.

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2 minutes ago, Stevo6899 said:

True but this is the first respectable low pressure we've had in years take this track and not get sheared out by the time it gets to us. I could be wrong but I think we finally see the further nw bands than modeled.

But we've got the x-fer east also tugging against all traditional odds. 991 mb actually

 

23-01-24 18z HRRR h29 Surf.png

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On 1/22/2023 at 10:17 PM, Dalfy said:

For greater STL metro I think fair prediction is 4-6'' --minimum range: 2''; maximum 8''.

Ugh, we just can't beat climo can we. Given how sheared and southeast this wave is, I'll be happy if we reach 3'' in the city. 

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Ugh, we just can't beat climo can we. Given how sheared and southeast this wave is, I'll be happy if we reach 3'' in the city. 
Look at your radar dumbass not the model

Sent from my SM-G960U using Tapatalk

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Already seeing some color on the county travel hazards map for Indiana. Allen county ( Ft. Wayne) and Hamilton county (northside of Indianapolis), are already under a travel watch. I guess some EMS managers are being proactive seeing how the snow has not even started yet.

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11 minutes ago, Powerball said:

Very nice comma head on the radar/satellite. Definitely has that "look," although it will be more bark than bite.

DTX trying to keep this one on the rails

National Weather Service Detroit/Pontiac MI
947 PM EST Tue Jan 24 2023

.UPDATE...

Evening observations are being monitored upstream for checks of
onset timing on the SE MI snow event set to begin toward sunrise and
then ramp up during the morning. The leading edge of precipitation
associated  with the textbook Gulf coast system is entering far
southern IL/western KY at mid evening. This is about on schedule
based on model comparisons which then project at least light snow
ongoing by the 5AM to 7 AM Warning/Advisory start times from the
Ohio border up to the northern Detroit suburbs. This initial phase
of the event puts down just enough accumulation for hazardous travel
during the morning travel peak in the Detroit metro area. Some
wavering of coverage and intensity is then expected around mid
morning as the leading isentropic ascent and moisture transport
plays out against resident dry air over the south half of Lower Mi
as indicated in the latest 00Z DTX sounding.

A transition to a more dynamically forced phase of the event begins
by late morning with a notable afternoon peak of coverage and
intensity. The afternoon phase is driven by an excellent combination
of coupled jet, short wave DCVA, and occlusion forcing that occurs
along and north of a classic NW Ohio surface low track. A band of
heavy snow is then expected around mid afternoon roughly centered on
a line from Adrian to metro Detroit to Port Huron matching up with
maximum elevated instability along the south flank of the TROWAL
axis. Snow rate of 1 inch per hour is likely during this time with
significant impacts to the evening peak travel period. Event total
accumulation of 3 to 6 inches Advisory and 6 to 8 inches Warning are
on target by the time snow diminishes Wednesday evening.

&&
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Impressive by DTW standards. Flash-backs of the Bliz of '99 airport nightmare by NW Airlines. Hopefully no repeat. Encouraged my sister NOT to fly out tomorrow and she re-booked for Thur.

Issued at 657 PM EST Tue Jan 24 2023

AVIATION...

Early evening satellite imagery indicates a wedge of mostly clear
sky over much of SE MI surrounded by MVFR clouds which are expected
to fill in from the south and west during the night. MVFR then holds
until snow spreads in from IN/OH toward sunrise when a quick
progression down into IFR takes place. Some variation of intensity
is expected during the morning while the leading edge moves south to
north across the region. The peak snow intensity remains on track
for the afternoon with LIFR/VLIFR in 1/2SM snow on average, and dips
to 1/4SM in heavy snow also possible, for several hours as the low
pressure system strengthens while moving through the Ohio valley.
The low center moves over NW OH, Lake Erie, and southern Ontario by
Wednesday evening resulting in a uniform east wind increasing and
backing NW along the terminal corridor. Gusts near 25 knots add some
blowing snow to the pattern as system snow diminishes mid Wednesday
evening.

For DTW... An area of MVFR clouds near the OH border move toward DTW
mid to late evening and then hold with broken coverage until snow
arrives toward sunrise. A 5 AM start time remains on track followed
by a quick transition into IFR early in the morning. Some variation
of intensity is possible during the mid to late morning before the
peak snow rate occurs in the afternoon. Rate near 1 inch per hour in
LIFR/VLIFR of 1/2SM to 1/4SM is likely for several hours before snow
diminishes toward Wednesday evening.

DTW THRESHOLD PROBABILITIES...

* High for ceiling 5000 ft or less tonight through Wednesday.

* High for snow late tonight through Wednesday.

* Moderate to high for visibility of 1/2SM or less Wednesday
  afternoon.
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