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Jan 20th snow event part 2


Thundersnow12

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Sunday - no packer game and it will be torching.

Is Alek your new, JB?

ya. more local, no hype :whistle:

Edit:

LOT Aviation on LE

//DISCUSSION...UPDATED 16Z...

A SOMEWHAT UNIQUE LAKE EFFECT SNOW BAND AHEAD OF THE MAIN SNOW

AREA TO THE WEST HAS BROUGHT LIGHT SNOW TO MDW AND MAY TO ORD

TEMPORARILY BEFORE THE PRIMARY SNOW ONSETS. HAVE SLIGHTLY SLOWED

THE 1SM SNOW ONSET...BUT NOT THE HALF MILE YET AS A WELL-DEFINED

BAND IS EVOLVING EAST NORTHEAST FROM DBQ TO VYS.

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ya. more local, no hype :whistle:

I hear he is pretty cheap and good too.

AREA FORECAST DISCUSSION

NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI

1021 AM CST FRI JAN 20 2012

UPDATE

NO CHANGES TO HEADLINES. SNOW ARRIVING AS PLANNED. RADAR

TRENDS SUPPORT THE HEAVIEST TOTALS IN THE SOUTHERN TIER OF

COUNTIES. 12Z 850 ANALYSIS SHOWED TIGHT BAROCLINIC RIBBON ACROSS

THE UPPER MIDWEST...WITH WNW 500 MILLIBAR 90 KNOT JET AT KGRB.

BACK EDGE OF RETURNS IN SW MN/NW IA. WAVE TO EXIT THIS EVENING.

LAKE EFFECT STILL ON TRACK FOR MKE/RAC/ENW COUNTIES TONIGHT INTO

EARLY SATURDAY. NAM HAS FAVORABLE 1000-850 TRAJECTORIES. GFS NOT

TOO SHABBY EITHER. DELTA T FAVORABLE WITH LOW LEVEL CONVERGENCE

PROGS FOCUSING FROM SRN MKE COUNTY INTO EASTERN RACINE/EASTERN

KENOSHA COUNTIES OVERNIGHT.

PC

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Wow, you can't cut it much closer than this..

It was looking pretty good earlier as I thought we would be well within the snow band. Unfortunately, the dry air surge has really done a job so it appears Cedar Rapids is now permanently stuck in the light snow on the back edge. Maybe we can still eke out three inches.

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Gilbert not too impressed.

FORECAST DISCUSSION: A lot of snow has been sublimating (evaporating)

through a dry layer of air aloft at about 2,000', clearly seen on the Quad

Cities weather balloon report this morning. Furthermore, snowfall reports

in Iowa and Nebraska have all been between 2"-4" in the heaviest band of

snow. While it's still possible that some areas will see 6", the new NAM

model has once again backed off on amounts for us, and radar clearly shows

that happening. I know I'm going against many forecasts here, but I live

in reality, and models are guidance. And reality shows 3"-5", with

isolated heavier amounts, and also some amounts being lower.

Having said all of that, the roads will quickly deteriorate from here on

out, and you should expect a rough rush hour with temperatures in the

teens making salt rather ineffective. Salt at 20 degrees takes 20 minutes

to begin to melt the snow; below 10 degrees, it is useless without calcium

chloride or other things mixed in, and salt at 30 degrees melts 5 times

more ice and snow than at 20 degrees (and there's your science lesson for

the day).

The rest of the forecast discussion should be out by noon.

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It was looking pretty good earlier as I thought we would be well within the snow band. Unfortunately, the dry air surge has really done a job so it appears Cedar Rapids is now permanently stuck in the light snow on the back edge. Maybe we can still eke out three inches.

Yeah it's only about 15-20 miles southwest of here, and quickly approaching. Ripping very nicely here at the moment, but unless another band develops soon we'll be dry slotted. Guessing we have 1.5" or so just by eyeballing out the window.

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Here's my one legitimate concern for LAF getting more than 2"...and the hi res models show it. The WAA portion of the event is a complete dud and we totally rely on development to the west tonight (over or just east of PIA). Thus a relatively short period of snow (2-4 hours)...where it better be rip city. We'll see.

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Gilbert not too impressed.

FORECAST DISCUSSION: A lot of snow has been sublimating (evaporating)

through a dry layer of air aloft at about 2,000', clearly seen on the Quad

Cities weather balloon report this morning. Furthermore, snowfall reports

in Iowa and Nebraska have all been between 2"-4" in the heaviest band of

snow. While it's still possible that some areas will see 6", the new NAM

model has once again backed off on amounts for us, and radar clearly shows

that happening. I know I'm going against many forecasts here, but I live

in reality, and models are guidance. And reality shows 3"-5", with

isolated heavier amounts, and also some amounts being lower.

Having said all of that, the roads will quickly deteriorate from here on

out, and you should expect a rough rush hour with temperatures in the

teens making salt rather ineffective. Salt at 20 degrees takes 20 minutes

to begin to melt the snow; below 10 degrees, it is useless without calcium

chloride or other things mixed in, and salt at 30 degrees melts 5 times

more ice and snow than at 20 degrees (and there's your science lesson for

the day).

The rest of the forecast discussion should be out by noon.

this is lol worthy.

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