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GHD III Winter Storm February 1st-3rd (Part 2)


Powerball

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I turned it on, will see if it has an effect by the 0z runs.

 

Meanwhile; I got bored, and I wanted to see a map with all the major models including the EURO, so I drew one to the best of my ability.

Green: 18z GFS, Blue: 12z GGEM, Red: 18z 12km NAM, Yellow: 18z 4km NAM, and Purple: 12z EURO.

 

post-7-0-15318700-1454194830.jpg

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Milwaukee/Sullivan:

O HERE ARE A FEW THOUGHTS ON HOW THINGS LOOK FOR US IN SOUTHERN

WISCONSIN CONSIDERING THE CURRENT MODEL SOLUTIONS. KEEP IN MIND

THAT ALL THIS COULD EASILY CHANGE IF THE LOW TRACK SHIFTS. FIRST

OF ALL...WITH REGARDS TO SNOW...PREVIOUS RESEARCH SUGGESTS THAT

THE HEAVIEST SWATH IS TYPICALLY FOUND ALONG AND NEAR THE 700 MB

LOW TRACK. CURRENT MODEL SOLUTIONS BRING THIS LOW THROUGH THE

WESTERN PORTION OF OUR SERVICE AREA. THIS WOULD SUPPORT HEAVIER

SNOW ACCUMULATIONS ON TUESDAY AFTERNOON AND EVENING ROUGHLY ALONG AND NORTHWEST OF A DARLINGTON...TO MADISON...TO FOND DU LAC LINE. DRY SLOTTING...OR A LAYER OF DRIER AIR WRAPPING AROUND THE

SOUTHEASTERN SIDE OF THE LOW PRESSURE SYSTEM...COULD SERVE TO

LIMIT TOTALS SOMEWHAT SOUTHEAST OF THESE AREAS. A TRANSITION TO

MIXED PRECIPITATION OR POSSIBLY EVEN LIGHT RAIN COULD OCCUR IN OUR

FAR SOUTHEAST ALONG LAKE MICHIGAN AND THE ILLINOIS BORDER.

PRECIPITATION SHOULD END AS ALL SNOW AREA-WIDE WEDNESDAY MORNING

AS COLDER AIR FILTERS IN BEHIND THE DEPARTING LOW.

THE STRONG PRESSURE GRADIENT ASSOCIATED WITH THIS POWERFUL AND

DYNAMIC SYSTEM WILL RESULT IN GUSTY WINDS BEGINNING ON TUESDAY

AFTERNOON AND LASTING INTO WEDNESDAY. GUSTS OF 25 TO 30 MPH ARE

EXPECTED TUESDAY AFTERNOON...WHICH COULD CAUSE CONSIDERABLE

BLOWING AND DRIFTING OF SNOW...ESPECIALLY IN THOSE AREAS THAT SEE

THE HEAVIER ACCUMULATIONS. AS IT STANDS RIGHT NOW...THESE WINDS

FALL SHORT OF OUR LOCAL BLIZZARD CRITERIA / WINDS SUSTAINED OR

GUSTING TO 35 MPH OR GREATER / BUT WE WILL CONTINUE TO EVALUATE

THIS WITH FUTURE MODEL RUNS AS WE DRAW CLOSER TO THE EVENT.

TO SUMMARIZE...A POWERFUL STORM SYSTEM IS STILL EXPECTED TO

AFFECT SOUTHERN WISCONSIN ON TUESDAY AND WEDNESDAY WITH

ACCUMULATING SNOW AND TRAVEL IMPACTS LIKELY. THERE IS STILL SOME

UNCERTAINTY REGARDING WHICH AREAS WILL SEE THE HEAVIEST

ACCUMULATIONS...BUT RECENT MODEL RUNS SUGGEST THAT NORTHWESTERN

PORTIONS OF OUR SERVICE AREA MAY BE THE MOST IMPACTED. ADDITIONAL

DETAILS FROM THE NEXT FEW FORECAST MODEL RUNS WILL ALLOW US TO

FINE TUNE THIS FORECAST. PLEASE KEEP UP TO DATE WITH THE FORECAST

IF YOU HAVE TRAVEL PLANS ACROSS SOUTHERN WISCONSIN ON TUESDAY OR

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Anyone read Skillin'g mini-meltdown rant against social media meteorologists this afternoon?

 

http://chicagoweathercenter.com/blog/heres-why-run-to-run-gyrations-in-computer-model-storm-track-forecasts-are-granted-more-importance-than-should-be-the-case

 

 

 

For those following the evolution of forecasts of the storm’s potential track as we get closer and closer to the event, run to run variations in each models handling of the  storm track are followed closely days in advance and often the subject of often breathless speculation on social media about the significance these track shifts represent.  It’s not unusual to have those producing the posts–and we, who read these posts have LITTLE IDEA what sort of meteorological backround these folks possess or their level of experience in forecasting complex winter storm scenarios—dismiss or actively embrace a storm threat days in advance.  Since social media posts lend equal weight to nobel prize winning scientists and the avid hobbyists in terms of appearance,  it’s hard to know for sure what sort of weight is to be attached to pronouncements which are made regarding the storm’s likely impact.

 

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I'm rooting for the north trend, maybe I can get a little severe action out of the deal Tuesday evening.

I'm hoping for some severe here too...GFS has a 70 knot 850mb jet. It won't take much CAPE to get a non-zero threat in the Ohio Valley as long as forcing with the front is strong enough.
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I'm hoping for some severe here too...GFS has a 70 knot 850mb jet. It won't take much CAPE to get a non-zero threat in the Ohio Valley as long as forcing with the front is strong enough.

Just saw the 18z NAM brought 750+ MUCAPE all the way up to central Indiana...

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I must admit, the turd polishing and straw grasping in this thread right now (between Geos trying to find any endorsement he can for snow in his backyard and the OH / IN folks rooting for what would be a minimal severe weather threat at best) is pretty entertaining. 

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It's ok to just accept this as crap. Pucker your lips together and make a raspberry with lots of spit on the monitor. File this one away under the category "turdarific" and move on.

 

Assuming you want this in your backyard and your name isn't Bo.

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Haha, turdarific - I like it.

 

It's unusual that the NAM isn't excited about a stronger solution at this range. First the lead wave died off and now this... 1002mb

 

namconus_ref_frzn_us_22.png

Could be a fluke trend to be reversed, but who knows.

 

acckucherasnowmw.png

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