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January 3-6th Winter Storm Part 2


Chicago Storm

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Kinda surprised that LOT didn't extend the winter storm warning farther north.  Seems like there's more than enough evidence at this point.  Perhaps it's a duration thing though...

I think it was a safe play because confidence is high in the southeast counties included in the warning that were already in the watch, but if current trends continue into 12z, the day shift will have time to adjust and provide adequate enough lead time since the snow is not starting until late in the day. Could definitely make a case for Cook and Will though because 12z guidance yesterday consistently pegged the southeastern portion of the counties for 6-7" amounts. Gino is working so we'll be in good hands. 

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AFD not out yet, but DTX is staying watch for now, probably due to the fact it won't start here until this evening.

Edit: AFD out and they are going with a Warning yet the zones remain with a watch...

As of now looks like north of Detroit say from flint to bad axe looking like the best spot. Frontal snow and the main show. Curious to see if dtx will continue to say heavier amounts to the se...
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As of now looks like north of Detroit say from flint to bad axe looking like the best spot. Frontal snow and the main show. Curious to see if dtx will continue to say heavier amounts to the se...

I think there will be 2 maximums in the area, one along the water and another probably running from Jonger up to Bad Axe where the frontal snows will be the best. This is not to say that most of the current watch/soon to be warning won't see a solid 6-10" isolated to 13".

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ILN AFD

 

 

 

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE WILMINGTON OH
522 AM EST SAT JAN 4 2014

.SYNOPSIS...
SOUTHERLY FLOW WILL ALLOW TEMPERATURES TO MODERATE AHEAD OF THE
NEXT STORM SYSTEM. ANOTHER WINTER STORM WILL CROSS THE AREA ON
SUNDAY FOLLOWED BY BITTERLY COLD AIR FOR THE EARLY PART OF NEXT
WEEK.

&&

.NEAR TERM /UNTIL 6 PM THIS EVENING/...
SOUTHERLY FLOW WILL BRING WARMING TEMPERATURES. SHOULD ONLY SEE
SOME MID TO HIGH CLOUDS WHICH WILL ALLOW FOR PLENTY OF SUN.
FORECAST HIGHS SLIGHTLY BELOW MOS CONSENSUS.

&&

.SHORT TERM /6 PM THIS EVENING THROUGH TUESDAY/...
COLD FRONT WILL APPROACH THE REGION LATE TONIGHT. SOUTHERLY WINDS
WILL KEEP TEMPERATURES FROM FALLING TOO MUCH IN MOST PLACES.
PRECIPITATION ALONG AND AHEAD OF THE BOUNDARY MAY WORK INTO
WESTERN LOCATIONS BEFORE DAYBREAK. AT THIS POINT IT APPEARS THAT
WILL BE PRIMARILY SNOW IN EAST CENTRAL INDIANA INTO WEST CENTRAL
OHIO WITH A MIX OF RAIN OR FREEZING RAIN AND SNOW ELSEWHERE.

06Z GFS AND 00Z ECMWF ARE VERY SIMILAR IN HANDLING THE DEVELOPING
LOW THAT WILL RIDE UP THE BOUNDARY AND MOVE ACROSS THE AREA LATE
SUNDAY INTO SUNDAY NIGHT. 00Z/06Z NAM RUNS APPEAR TO TAKE THE LOW
TOO FAR TO THE NORTHWEST. SO FORECAST RELIES HEAVILY ON THE FORMER
MODELS.


PRECIPITATION WILL SPREAD ACROSS THE FORECAST AREA THROUGH
THE DAY. WARM AIR AHEAD OF THE LOW WILL ALLOW FOR A RAIN/SNOW MIX
EXCEPT IN SOUTH CENTRAL OHIO AND MUCH OF NORTHERN KENTUCKY WHERE
IT APPEARS THAT PRECIPITATION COULD TURN TO ALL RAIN FOR A GOOD
PART OF THE DAY. THERE IS SOME CONCERN THAT TEMPERATURES MAY NOT
WARM AS QUICKLY AS FORECAST. THUS THE NORTHERN FRINGE OF THE MIXED
PRECIPITATION COULD HAVE A BRIEF PERIOD OF SNOW/FREEZING RAIN MIX.

HEAVIER PRECIPITATION WILL FALL AS THE LOW TRACKS ACROSS THE
REGION DURING THE LATTER PART OF SUNDAY. ALSO THIS WILL ALLOW
COLDER AIR TO MOVE IN AND CHANGE PRECIPITATION TO ALL SNOW.
PRECIPITATION WILL DIMINISH LATE SUNDAY EVENING AND END DURING THE
OVERNIGHT HOURS.

WHERE PRECIPITATION REMAINS ALL SNOW THROUGHOUT THE EVENT...SNOW
TOTALS COULD END UP APPROACHING A FOOT. MOST PLACES WILL NOT GET
THAT MUCH DUE TO WARMER TEMPERATURES AND THE POTENTIAL FOR RAIN
MIXING IN DURING SUNDAY. BUT EVEN SO ACCUMULATIONS WILL BE
SUBSTANTIAL. HAVE UPGRADED MOST OF THE PREVIOUS WINTER STORM
WATCH TO A WINTER STORM WARNING. EAST OF THE WARNING A NEW WATCH
HAS BEEN POSTED. EXPECT THE BULK OF THE ACCUMULATING SNOW TO BE
LATER /LATE SUNDAY AFTERNOON INTO THE EVENING/ IN THE NEW WATCH
AREA. WILL LIKELY END UP WITH AN ADVISORY IN THE SOUTHEAST
COUNTIES. BUT THAT IS STILL WELL OUT IN TIME. SO HAVE KEPT THE
MENTION OF SNOW ACCUMULATIONS IN THE HWO FOR THERE.

ARCTIC AIR MASS WILL SPILL INTO THE REGION BEHIND THIS STORM.
EXTREMELY COLD TEMPERATURES WILL PREVAIL THROUGH TUESDAY. WITH THE
CENTER OF THE HIGH BUILDING SOUTH OF THE REGION...WESTERLY WINDS
WILL PERSIST THROUGH THE PERIOD. BRUTALLY LOW WIND CHILLS REMAIN
IN THE FORECAST. EVEN THOUGH THIS IS STILL 3-4 DAYS OUT...THE
STRENGTH OF THE FORECAST SIGNAL ALONG WITH THE RARITY OF THE EVENT
WARRANTS POSTING A WIND CHILL WATCH FOR MONDAY THROUGH TUESDAY.
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Definitely need to start thinking rain for here, for a time anyway. 3z SREF are bringing those possibilities into Indy.

 

Nonetheless, 3z snowfall plumes for Indiana locales

 

BMG: 6.2" (12.7" high, 1.9" low)

HUF: 9.8" (16.4" high, 3.1" low)

FWA: 9.6" (17.9" high, 3.4" low)

IND: 9.3" (17.7" high, 3.0" low)

LAF: 10.5" (17.5" high, 4.9" low)

MIE: 9.1" (16.5" high, 2.1" low)

OKK: 10.7" (18.8" high, 5.1" low)

SBN: 14.5" (27.0" high, 6.2" low) les enhancement here

VPZ: 12.2" (19.9" high, 6.0" low)

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Definitely need to start thinking rain for here, for a time anyway. 3z SREF are bringing those possibilities into Indy.

 

Nonetheless, 3z snowfall plumes for Indiana locales

 

BMG: 6.2" (12.7" high, 1.9" low)

HUF: 9.8" (16.4" high, 3.1" low)

FWA: 9.6" (17.9" high, 3.4" low)

IND: 9.3" (17.7" high, 3.0" low)

LAF: 10.5" (17.5" high, 4.9" low)

MIE: 9.1" (16.5" high, 2.1" low)

OKK: 10.7" (18.8" high, 5.1" low)

SBN: 14.5" (27.0" high, 6.2" low) les enhancement here

VPZ: 12.2" (19.9" high, 6.0" low)

 

Very very little chance of rain in IND and especially LAF. 

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DTX says least snow along the far SE.

Reread the discussion. DTX says least snow with the fgen band but the most snow with the main storm. I don't mind if the NW burbs get a jackpot as they are certainly overdo (we surprisingly have been hogging all the biggies the last few years) but I will be mega mad if I sonehow get rain (would take a further shift west of the most wesy models, but as is CLE sees rain per nam and rgem).

Obviously a snowpack is locked in place regardless, but this can give us some pretty epic depth if it goes right.

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Reread the discussion. DTX says least snow with the fgen band but the most snow with the main storm. I don't mind if the NW burbs get a jackpot as they are certainly overdo (we surprisingly have been hogging all the biggies the last few years) but I will be mega mad if I sonehow get rain (would take a further shift west of the most wesy models, but as is CLE sees rain per nam and rgem).

Obviously a snowpack is locked in place regardless, but this can give us some pretty epic depth if it goes right.

 

I don't think you will see plain rain, but IP is quite possible. You know the drill though, for NW to do better, rain/IP has to usually be in play for the river.

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Overnight model summary for YYZ is below. Euro has stayed consistent on amounts but the GFS is slowly warming up temp profiles towards the consensus. The GFS has come down from the 9"+ amounts that it previously had to accums near 7" as ratios have lowered to near 10:1. Nice to know we've reached a consensus. :axe:

 

0z euro: 6-7"

6z GFS: 7-9"

6z NAM: Trace

SREF mean: 4.8"

RGEM: 2-4"

Ec ENS: 5-6"

GEFS/R: 4-5"

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I don't think you will see plain rain, but IP is quite possible. You know the drill though, for NW to do better, rain/IP has to usually be in play for the river.

That's the dilemma. When we cream you guys snowstorm wise (dec 26, 2012...dec 14, 2014...dec 31, 13 - jan 3, 14) you get pixie dust. When you cream us, its pick which evil is at play (dryslot, sleet, rain).
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That's the dilemma. When we cream you guys snowstorm wise (dec 26, 2012...dec 14, 2014...dec 31, 13 - jan 3, 14) you get pixie dust. When you cream us, its pick which evil is at play (dryslot, sleet, rain).

 

The only time we ever seem to beat downriver during very cold events is where a lucky band sets up over central Oakland over to Shiawassee county. Usually we always get poor snowfall rates in storms like this past weekend when cold air isn't an issue for either of us.

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