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Feb. 26-Mar. 1st Winter Storm Potential


Chicago Storm

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0z NAM:

MKE: (2M, 850, QPF)

HR 27: 30.8. 1.6, 0.13

HR 30: 31.3, -0.2, 0.40

HR 33: 28.7, -1.8, 0.53

HR 36: 26.4, -2.5, 0.08

FZR: 0.13

Snow: 1.01

Total QPF: 1.14

MSN:

HR 27: 26.6, 0.5, 0.06

HR 30: 26.7, -1.8, 0.27

HR 33: 24.9, -3.7, 0.14

HR 36: 21.8, -4.9, 0.03

FZR: 0.06

Snow: 0.44

ORD:

HR 24: 32.0, 6.3, 0.04

HR 27: 32.7, 8.1, 0.09

HR 30: 33.0, 8.4, 0.08

HR 33: 32.6, 0.7, 0.35

HR 36: 29.2, -0.6, 0.05

FZR: 0

Rain: .61

Snow: 0

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pretty good period of FZDZ going on here with a solid glaze of ice on the trees already.

...FREEZING RAIN ADVISORY IN EFFECT UNTIL 5 AM CST SUNDAY...

THE NATIONAL WEATHER SERVICE IN CHICAGO HAS ISSUED A FREEZING

RAIN ADVISORY...WHICH IS IN EFFECT UNTIL 5 AM CST SUNDAY.

* TIMING...LIGHT FREEZING DRIZZLE WILL CONTINUE WITH TEMPERATURES

HOLDING STEADY AROUND OR JUST BELOW FREEZING OVERNIGHT.

* ICE ACCUMULATIONS...TRACE AMOUNTS OF ICE ACCUMULATION IS

EXPECTED. ICY PATCHES MAY DEVELOP ON ROADWAYS MAKING TRAVEL

HAZARDOUS.

* OTHER IMPACTS...SLIPPERY CONDITIONS ON LIGHTLY TRAVELED OR

UNTREATED ROADS AND SIDEWALKS...ESPECIALLY ON EXPOSED BRIDGE

DECKS AND OVERPASSES.

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The 0z NAM appears to be coming in with a period fo FZRA for NW. Missouri, C/E. Iowa, NW. Illinois and S. Wisconsin tomorrow evening/night.

Looks like it does turn to snow for many of the areas mentioned, especially C. Michigan.

The GFS affects the same areas with wintery precip, but it appears to be more SN than FZRA.

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MKE takes notice

AREA FORECAST DISCUSSION...UPDATED

NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI

945 PM CST SAT FEB 26 2011

BASED ON 18Z RUNS AND NEW 00Z RUN OF THE NAM...FELT IT NECESSARY TO

BUMP POPS ACROSS THE SOUTHEAST HALF OF THE CWA FOR SUNDAY NIGHT. THE

MODELS HAVE SHIFTED NORTH AND IT IS HARD TO IGNORE. THE NEW 00Z NAM

LOOKS LIKE AN OVERCORRECTION. THE MODELS ARE DEPICTING A VERY DEEP

ZONE OF FRONTOGENETIC FORCING UNDER A STRONG COUPLED UPPER LEVEL

JET. THE DYNAMIC COOLING SHOULD QUICKLY COOL THE COLUMN RESULTING IN

QUITE A VARIETY OF MIXED/FROZEN PRECIP ACROSS THE FAR SOUTHEAST. THE

REMAINDER OF THE MODEL SUITE IS DRIBBLING IN THIS EVENING...SO THE

OVERNIGHT CREW WILL FURTHER REFINE THE FORECAST.

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0z NAM:

MKE: (2M, 850, QPF)

HR 27: 30.8. 1.6, 0.13

HR 30: 31.3, -0.2, 0.40

HR 33: 28.7, -1.8, 0.53

HR 36: 26.4, -2.5, 0.08

FZR: 0.13

Snow: 1.01

Total QPF: 1.14

MSN:

HR 27: 26.6, 0.5, 0.06

HR 30: 26.7, -1.8, 0.27

HR 33: 24.9, -3.7, 0.14

HR 36: 21.8, -4.9, 0.03

FZR: 0.06

Snow: 0.44

ORD:

HR 24: 32.0, 6.3, 0.04

HR 27: 32.7, 8.1, 0.09

HR 30: 33.0, 8.4, 0.08

HR 33: 32.6, 0.7, 0.35

HR 36: 29.2, -0.6, 0.05

FZR: 0

Rain: .61

Snow: 0

:lmao::lol::weenie:

After seeing this my mouth was agape. I'd easily take a half, maybe even a third of that. Today and tonight we had a nice steady light to moderate snow, which probably amounted to a total of 3 or 4 inches, including last night. I already considered that a bonus. Anything close to this, though, and I'd have nothing to complain about.

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If the EURO comes on board, you guys would be in great shape. GFS is easily 6+ inches, and NAM would give you 8-10+ as well.

FYI, RUC is coming in pretty far north (I know it isn't great 24 hours out, but meh)

It really is hard for me to believe such a dramatic shift is possible, but I guess that's weather. 6 or 7 hours ago, 20% of mixy precip. Now, potential for a decent storm.

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http://www.emc.ncep....nt4km/conus/00/ that's the link btw. 2M temps are easily cold enough for snow, and most of S. WI receives at least .25 QPF.

What a good change.

I really don't know what to think. Even with a perfect track, I had been thinking the best we could have hoped for would be a few inches of wind driven snow due to marginal cold air.

ETA: I'm not even sure I would've checked this thread until tomorrow. I had given up any hope and was content with the WAA snow we had tonight. Now I don't think I will be able to sleep.:P

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MKE AFD from this afternoon:

MODELS HAVE MADE A DRAMATIC SHIFT TO THE SOUTH WITH THE

APPROACHING UPPER WAVE AND SFC TROUGH. THE STRONG SHORTWAVE TROUGH

WILL MOVE ACROSS THE SRN PLAINS SUN NT WITH THE SFC TROUGH

DEVELOPING NEWD FROM THE SRN PLAINS TO THE ERN GRTLKS. THE UPPER

TROUGH WILL THEN MOVE ALONG THE OHIO RIVER ON MON WITH THE SFC

TROUGH SHIFTING EWD. FAR SE WI IS ON THE NRN EDGE OF MID LVL

QVECTOR CONVERGENCE ALONG WITH WEAK 850 MB FRONTOGENESIS IN THE

EVENINGS AS THE 850 MB COOL FROPA OCCURS. THUS TRIMMED POPS TO

ONLY 20-50 POPS IN FAR SRN WI. TEMP PROFILES ARE COMPLEX BUT

OVERALL A LGT MIXTURE OF RAIN...SLEET AND FREEZING RAIN IS

POSSIBLE.

Now they may need to issue winter storm warnings for the SE part of the state lol.

GEM comes in line with the rest of the models. Dropping .5+ QPF of snow in the S. part of WI.

HR 36:

530_100.gif

Should be all snow imo.

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MKE AFD from this afternoon:

MODELS HAVE MADE A DRAMATIC SHIFT TO THE SOUTH WITH THE

APPROACHING UPPER WAVE AND SFC TROUGH. THE STRONG SHORTWAVE TROUGH

WILL MOVE ACROSS THE SRN PLAINS SUN NT WITH THE SFC TROUGH

DEVELOPING NEWD FROM THE SRN PLAINS TO THE ERN GRTLKS. THE UPPER

TROUGH WILL THEN MOVE ALONG THE OHIO RIVER ON MON WITH THE SFC

TROUGH SHIFTING EWD. FAR SE WI IS ON THE NRN EDGE OF MID LVL

QVECTOR CONVERGENCE ALONG WITH WEAK 850 MB FRONTOGENESIS IN THE

EVENINGS AS THE 850 MB COOL FROPA OCCURS. THUS TRIMMED POPS TO

ONLY 20-50 POPS IN FAR SRN WI. TEMP PROFILES ARE COMPLEX BUT

OVERALL A LGT MIXTURE OF RAIN...SLEET AND FREEZING RAIN IS

POSSIBLE.

Now they may need to issue winter storm warnings for the SE part of the state lol.

GEM comes in line with the rest of the models. Dropping .5+ QPF of snow in the S. part of WI.

HR 36:

Should be all snow imo.

I wonder if Bow's even going to find out about this shift until tomorrow. It would be funny if he shows up right at the onset and asks what the heck is going on.

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He probably won't lol, but who knows. GEM/NAM/GFS/NMM would all give you guys at least 5+ inches with the NMM and NAM giving you at least 7. Gonna be interesting to see if the EURO follows at all. I need about a 30 mile shift NW here with the GFS. NAM and NMM hit me decent though as is, so who knows. Gonna be a tough forecast for the MKE office.

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He probably won't lol, but who knows. GEM/NAM/GFS/NMM would all give you guys at least 5+ inches with the NMM and NAM giving you at least 7. Gonna be interesting to see if the EURO follows at all. I need about a 30 mile shift NW here with the GFS, NAM and NMM hit me decent though as is, so who knows. Gonna be a tough forecast for the MKE office.

Good luck with this. I hope you can cash in decently as well. It looks like a relatively thin strip of 6+ inches, so we still may need a lot of things to go right.

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Interesting changes this evening. The precip shield has shifted northwest, but the temps seem a bit cooler as well. Someone from eastern Iowa into southern Wisconsin may get a nice surprise snow from this. There also seems like there's a growing concern for a zone of icing a bit further southeast. Here near the QC it looks like we start as rain, but may go over to a period of glazing. Don't think we'll see much snow here, as mid level temps stay a bit too warm until most of the precip is gone. Cedar Rapids/Iowa City to Madison look pretty good for some accumulating snows at this point. Since things still seem to be shifting around a bit I'd wait until the 12z runs before getting too excited either way.

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