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January 10th-12th OV/MW/GL Winter Storm prospects


Harry

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First things first, would like to apologize if I made anyone mad last night, it was an honest mistake. And yes I am still on the 5 post thing, so Im not gonna reply to anyone.. Enough of that. As per the storm. Mostly everything has been covered where the models are concerned so I wanted to post my map for Ohio.. Basing it more on the NAM, as I dont buy the underdone qpf on the gfs. But anyways here ya go. Enjoy..

SnowMapTuesdayJanuary112011.jpg

Nice map. Agree with it completely.

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This close in I tend to lean toward the NAM more then the GOV(gfs). So Im calling for a nice 3-5 inch snowfall with 15 to 1 ratios for all of the Detroit area.:drunk:

Sounds good. With 1-2" on the ground before the storm arrives, it looks as though we may regain the nice snowdepth we had much of December. Only this time instead of a grinch torch in the offing, looks to stay cold, so we will be able to build on it as time goes on, accounting for settling of course :)

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00Z Euro

DSM: 0.44

DBQ: 0.19

FSM: 0.15

ORD: 0.14

MKE: 0.10

MSP: 0.24

STL: 0.24

PIA: 0.24

IND: 0.27

GRR: 0.11

DET: 0.21

DTW: 0.22

PTK: 0.20

TOL: 0.23

FDY: 0.27

CMH: 0.27

DAY: 0.27

SDF: 0.21

YYZ: 0.08

Thanks for these qpf updates all the time btw.

So for the 00z runs we have for DTW

NAM: 0.40"

EURO: 0.22"

GFS: 0.20"

Lets say we have 15-1 ratios, Id say a 3-5" with locally 6" forecast would be decent.

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the NAM is showing a crazy deep DGZ here tuesday morning around 250mb or so. given some decent lift through that this could be interesting. even if were not getting a big amount of snow, I will still be happy with a few inches and big flakes.

What are you thinking around there? At this point I'm figuring something like 2-4" for much of northern IL except maybe 3-5" near the lake.

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What are you thinking around there? At this point I'm figuring something like 2-4" for much of northern IL except maybe 3-5" near the lake.

Im with you on the 2-4" here with better amounts near the lake due to some enhancement then possibly some lake banding. the euro has the least qpf at .14" but NAM/GFS both over .20". with good ratios I like that call for out here. you never know though with decent lift through a 250mb deep DGZ. wouldnt be surprised if this overperformed in some spots. I just want some quarter size flakes lol

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highest totals I have seen coming out of NE are 7" and 8"

0837 PM SNOW GOTHENBURG 40.93N 100.16W

01/09/2011 E12.0 INCH DAWSON NE TRAINED SPOTTER

FROM GOTHENBURG TO COZAD ON HWY 30...ESTIMATED 12 INCHES

OF STORM TOTAL SNOW FALL..INCLUDING 8 INCHES OF NEW

SNOWFALL SINCE 4 AM.

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06Z run of the NAM looks like it might be strengthening the 500 MB low earlier this run might help out those North and West.

6z models holding firm, GFS showing 0.17" at DTW with NAM 0.36".

DTX says 2-3" for much of metro Detroit with 4"+ possible far east/southeast, which would be mby.

UPPER LEVEL TROUGH OVER THE ROCKY MOUNTAINS WILL SLIDE EAST ON

TUESDAY AS A JET STEAK ROUNDS THE BASE OF THE TROUGH. THIS TROUGH

BECOMES NEGATIVELY TILTED AS IT SWINGS THROUGH THE MID-MISSISSIPPI

AND OHIO VALLEYS WITH A CLOSED UPPER LEVEL LOW DEVELOPING OVER OHIO

BY 00Z WED. THE ASSOCIATED SURFACE REFLECTION WILL ALSO DEEPEN ON

TUESDAY AS IT CURLS UP THE WEST SIDE OF THE APPALACHIANS TOWARDS

CLEVELAND. THE GFS/ECMWF/REG GEM ARE IN GOOD AGREEMENT WITH THE

TRACK OF THIS FEATURE WHILE THE NAM IS A STRONG OUTLIER. ALTHOUGH A

SLIGHTLY DEEPER SOLUTION IS A POSSIBILITY...THE MAIN CONCERN WITH

THE NAM IS THAT IT SEEMS TOO SLOW IN SHIFTING TO THE EAST COAST.

WILL LEAN THE FORECAST TOWARDS THE GFS...ALTHOUGH TEMPER QPF DOWN A

TOUCH ACROSS THE NORTH THINKING THAT THE GFS IS TOO BROAD WITH THE

QPF FIELDS. SNOW IS STILL EXPECTED TO SPREAD INTO THE SOUTHERN

BORDER COUNTIES BY EARLY TUESDAY AFTERNOON...OVERSPREADING ALL OF

SOUTHEAST MICHIGAN BY TUESDAY EVENING. A WEDGE OF DRY LOW LEVEL AIR

OUT OF THE EAST WILL HAVE TO BE OVERCOME BEFORE THE ISENTROPIC

ASCENT IN THE 280-290K LAYER CAN BE EFFICIENT AT PRODUCING

WIDESPREAD SNOW. CURRENT TIMING STILL SUGGESTS THE METRO DETROIT

AREA WILL HAVE TO CONTEND WITH ACCUMULATING SNOWFALL BY THE EVENING

COMMUTE WHILE SNOW MAY NOT START IN FLINT UNTIL MIDWAY THROUGH RUSH

HOUR. SPECIFIC HUMIDITIES ARE STILL FORECAST TO BE IN THE 1-2 G/KG

RANGE WITH THE HIGHEST AMOUNTS FOCUSED FROM THE SOUTHERN

BORDER...THROUGH METRO DETROIT...TOWARDS PORT HURON. SNOWFALL IN

THIS AREA SHOULD BE IN THE 2-3 INCH RANGE...TAPERING DOWN TO AN INCH

OR LESS ACROSS THE SAGINAW VALLEY BY LATE TUESDAY NIGHT. A FEW

LOCATIONS MAY SNEAK UP TO 4+ INCHES IN THE VICINITY OF LAKE ERIE AND

THE DETROIT RIVER. LIGHT SNOW WILL CONTINUE INTO THE OVERNIGHT

HOURS...ESPECIALLY ACROSS THE EAST AS THE DEFORMATION AXIS PIVOTS

OVERHEAD.

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6z models holding firm, GFS showing 0.17" at DTW with NAM 0.36".

DTX says 2-3" for much of metro Detroit with 4"+ possible far east/southeast, which would be mby.

UPPER LEVEL TROUGH OVER THE ROCKY MOUNTAINS WILL SLIDE EAST ON

TUESDAY AS A JET STEAK ROUNDS THE BASE OF THE TROUGH. THIS TROUGH

BECOMES NEGATIVELY TILTED AS IT SWINGS THROUGH THE MID-MISSISSIPPI

AND OHIO VALLEYS WITH A CLOSED UPPER LEVEL LOW DEVELOPING OVER OHIO

BY 00Z WED. THE ASSOCIATED SURFACE REFLECTION WILL ALSO DEEPEN ON

TUESDAY AS IT CURLS UP THE WEST SIDE OF THE APPALACHIANS TOWARDS

CLEVELAND. THE GFS/ECMWF/REG GEM ARE IN GOOD AGREEMENT WITH THE

TRACK OF THIS FEATURE WHILE THE NAM IS A STRONG OUTLIER. ALTHOUGH A

SLIGHTLY DEEPER SOLUTION IS A POSSIBILITY...THE MAIN CONCERN WITH

THE NAM IS THAT IT SEEMS TOO SLOW IN SHIFTING TO THE EAST COAST.

WILL LEAN THE FORECAST TOWARDS THE GFS...ALTHOUGH TEMPER QPF DOWN A

TOUCH ACROSS THE NORTH THINKING THAT THE GFS IS TOO BROAD WITH THE

QPF FIELDS. SNOW IS STILL EXPECTED TO SPREAD INTO THE SOUTHERN

BORDER COUNTIES BY EARLY TUESDAY AFTERNOON...OVERSPREADING ALL OF

SOUTHEAST MICHIGAN BY TUESDAY EVENING. A WEDGE OF DRY LOW LEVEL AIR

OUT OF THE EAST WILL HAVE TO BE OVERCOME BEFORE THE ISENTROPIC

ASCENT IN THE 280-290K LAYER CAN BE EFFICIENT AT PRODUCING

WIDESPREAD SNOW. CURRENT TIMING STILL SUGGESTS THE METRO DETROIT

AREA WILL HAVE TO CONTEND WITH ACCUMULATING SNOWFALL BY THE EVENING

COMMUTE WHILE SNOW MAY NOT START IN FLINT UNTIL MIDWAY THROUGH RUSH

HOUR. SPECIFIC HUMIDITIES ARE STILL FORECAST TO BE IN THE 1-2 G/KG

RANGE WITH THE HIGHEST AMOUNTS FOCUSED FROM THE SOUTHERN

BORDER...THROUGH METRO DETROIT...TOWARDS PORT HURON. SNOWFALL IN

THIS AREA SHOULD BE IN THE 2-3 INCH RANGE...TAPERING DOWN TO AN INCH

OR LESS ACROSS THE SAGINAW VALLEY BY LATE TUESDAY NIGHT. A FEW

LOCATIONS MAY SNEAK UP TO 4+ INCHES IN THE VICINITY OF LAKE ERIE AND

THE DETROIT RIVER. LIGHT SNOW WILL CONTINUE INTO THE OVERNIGHT

HOURS...ESPECIALLY ACROSS THE EAST AS THE DEFORMATION AXIS PIVOTS

OVERHEAD.

The thing is if the NAM is right they are going to be low.

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