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12/3-12/6 MW/GL snow event?


Thundersnow12

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Euro:

we're out to 48... the system retrograding off the east coast has a stretched out 1000 mb low pressure.. the clipper has a light to moderate snow band from Minneapolis through Chicago.

Not sure if it's stronger or anything but that was from the euro thread.

Euro reversed that slight north/east thing from the 00z run.

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On the positive side, this event looks to be safely all snow here even if there are some minor shifts. There were a couple prior model run that were one bump or two away from introducing mixing concerns. On the negative side, the weakening shown as it moves east. Although the Euro is still putting out about .3 here which would still be a decent event even without the higher ratios that should be experienced farther north. The DGZ depth looks to be a bit less here but we might still be able to pull off 12:1 or something.

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12z NAM spits out 3 inches for ORD, with the GFS about the same.

48 12/04 12Z 29 28 138 6 0.03 0.00 530 547 -6.6 -22.9 1020 100 -SN 000OVC200 0.3 0.8

51 12/04 15Z 30 28 138 6 0.08 0.00 529 545 -6.5 -26.4 1020 100 -SN 000OVC181 0.8 0.8

54 12/04 18Z 30 28 105 4 0.08 0.00 527 543 -7.8 -27.2 1019 100 -SN 000OVC169 0.8 0.8

57 12/04 21Z 31 29 61 5 0.08 0.00 526 542 -8.8 -27.5 1019 100 -SN 005OVC178 0.7 1.4

60 12/05 00Z 31 30 17 5 0.04 0.00 525 542 -9.1 -27.8 1021 100 -SN 006OVC135 0.4 3.5

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ORD:

12z....

ECMWF: 0.30"

GFS: 0.30"

NAM: 0.29"

GGEM: 0.25-0.50"

LAF:

12z...

ECMWF: 0.30"

GFS: 0.24"

NAM: 0.21"

GGEM: 0.10-0.25"

MSN:

12z....

ECMWF: 0.28"

GFS: 0.25"

NAM: 0.38"

GGEM: 0.25-0.50"

MSP:

12z...

ECMWF: 0.39"

GFS: 0.30"

NAM: 0.46"

GGEM: 0.50-0.75"

LSE:

12z...

ECMWF: 0.38"

GFS: 0.30"

NAM: 0.46"

GGEM: About 0.50"

MKE:

12z...

ECMWF: 0.14"

GFS: 0.22"

NAM: 0.28"

GGEM: 0.25-0.50"

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MPX has upgraded to warning

MN...WINTER STORM WARNING FROM NOON FRIDAY TO 6 AM CST SATURDAY FOR

ANOKA-BLUE EARTH-CARVER-DAKOTA-FARIBAULT-FREEBORN-GOODHUE-

HENNEPIN-LE SUEUR-MARTIN-MCLEOD-MEEKER-NICOLLET-RAMSEY-RICE-

SCOTT-SHERBURNE-SIBLEY-STEARNS-STEELE-TODD-WASECA-

WASHINGTON-WATONWAN-WRIGHT.

WINTER STORM WARNING FROM 6 AM FRIDAY TO MIDNIGHT CST FRIDAY

NIGHT FOR BROWN-CHIPPEWA-DOUGLAS-KANDIYOHI-LAC QUI PARLE-

POPE-REDWOOD-RENVILLE-STEVENS-SWIFT-YELLOW MEDICINE.

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IND issued a special weather statement and mentions the possibility of 2-4" of snow along and north of a line from Terre Haute-Martinsville-Columbus.

Seems pretty solid...I also like the mention of the possibility of a thin stripe of 4+ somewhere. 18z NAM did bump our QPF back over .3 fwiw... hard to believe (well maybe not) that it had nearly 1" qpf yesterday.

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