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March 4-6 Winter Storm pt 2


Harry

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Temp up to 34 IMBY - even side streets here in the burbs are staying relatively clear of accumulation - moved an inch or so off my driveway 40 mins ago - and even with steady light to occasionally moderate snowfall since then - the driveway/sidewalks are staying wet.

 

temps have been rising steadily since the snow began.  Where are you located?  My thermo now reads 34.5 and still rising.

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My P&C totals for tonight, just went up. *shrugs* Mainly some very light snow floating about at the moment, temp down a degree to 36º.  

 

This Afternoon: Rain and snow, becoming all snow after 1pm. High near 35. East northeast wind 11 to 14 mph, with gusts as high as 20 mph. Chance of precipitation is 100%. Total daytime snow accumulation of 1 to 3 inches possible. 

Tonight: Snow before 1am, then snow likely with areas of blowing snow between 1am and 4am, then areas of blowing snow and a chance of snow after 4am. The snow could be heavy at times. Low around 25. Blustery, with a north wind 15 to 21 mph, with gusts as high as 28 mph. Chance of precipitation is 100%. New snow accumulation of 3 to 5 inches possible.

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Hmm...My P&C is bumped up.

.DISCUSSION...

1006 AM CST

HAVE INCREASED SNOWFALL AMOUNTS ACROSS THE AREA THIS MORNING AS

REPORTS OF UP TO 2" PER HOUR RATES HAVE BEEN RECEIVED ACROSS

PORTIONS OF NORTH CENTRAL ILLINOIS. THESE VERY HEAVY SNOWFALL RATES

APPEAR TO BE TIED TO A BAND OF STRONG 850-700 MB FRONTOGENESIS

ASSOCIATED WITH THE APPROACHING 700 MB LOW. THE LATEST GUIDANCE

SUPPORTS THESE HEAVY SNOW RATES CONTINUING TO SPREAD ACROSS ALL OF

NORTHERN ILLINOIS AND INTO NORTHWESTERN INDIANA OVER THE NEXT FEW

HOURS.

12Z LOCAL HI-RES SIMULATIONS HAVE NUDGED UPWARDS WITH THE INTENSITY

OF OMEGA/FORCING IN THE LOW-LEVELS IN THE 18-00Z TIMEFRAME. MORE

FOCUSED BETWEEN I-80 AND I-88 CORRIDORS OF NORTHERN IL/NORTHWEST IN.

THE BEST FORCING BAND APPEARS TO PIVOT IN THE AFTERNOON ALLOWING FOR

A PROLONGED PERIOD OF MODERATE TO HEAVY SNOWFALL.

MODEL CROSS SECTIONS ACROSS THE AREA INDICATE VERY STRONG FORCING

FOR ASCENT IN THE DENDRITIC GROWTH ZONE THROUGH THE

AFTERNOON...ALONG WITH SOME -EPV IN THE MID LEVELS...INDICATING THE

PRESENCE OF STEEP MID LEVEL LAPSE RATES. THE INVERTED SURFACE LOW

PRESSURE TROUGH SHOULD PIVOT ACROSS THE AREA THROUGH THE AFTERNOON

AND INTO THE EARLY EVENING...LIKELY RESULTING IN SEVERAL HOURS OF

HEAVY SNOW RATES IN A BAND RIGHT ACROSS THE CWA. WITH THIS IN

MIND...IT APPEARS THAT 7 TO 10 INCHES AMOUNTS...WITH SOME AMOUNTS IN

EXCESS OF A FOOT WILL BE POSSIBLE BY THIS EVENING. UPDATED FORECAST

AMOUNTS WILL BE ISSUED SHORTLY.

KJB/DB

 

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Warning text back up to 7-10

 

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE CHICAGO IL
1019 AM CST TUE MAR 5 2013

ILZ003-004-008-010-011-019-060030-
/O.CON.KLOT.WS.W.0003.000000T0000Z-130306T0600Z/
WINNEBAGO-BOONE-OGLE-LEE-DE KALB-LA SALLE-
INCLUDING THE CITIES OF...ROCKFORD...BELVIDERE...OREGON...DIXON...
DEKALB...OTTAWA
1019 AM CST TUE MAR 5 2013

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL MIDNIGHT CST
TONIGHT...

* TIMING...SNOW WILL INCREASE IN INTENSITY THROUGHOUT THE
  REMAINDER OF THIS MORNING INTO THE AFTERNOON HOURS. THEN SNOW
  WILL CONTINUE THROUGH EARLY THIS EVENING BEFORE TAPERING OFF
  AROUND MIDNIGHT TONIGHT.

* SNOW ACCUMULATION...7 TO 10 INCHES WITH LOCALIZED AMOUNTS UP TO
  12 INCHES POSSIBLE.

 

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Welp, got to go with the professionals. Updated warning below...which is a solid bump. Very best of luck to the IND NWS. :D

 

 

CARROLL-WARREN-TIPPECANOE-CLINTON-HOWARD-TIPTON-HAMILTON-MADISON-DELAWARE-RANDOLPH-HANCOCK-HENRY-RUSH-INCLUDING THE CITIES OF...LAFAYETTE...FRANKFORT...KOKOMO...ANDERSON...MUNCIE1120 AM EST TUE MAR 5 2013...WINTER STORM WARNING NOW IN EFFECT FROM 3 PM THIS AFTERNOON TO7 AM EST WEDNESDAY...THE WINTER STORM WARNING IS NOW IN EFFECT FROM 3 PM THISAFTERNOON TO 7 AM EST WEDNESDAY.* MAIN IMPACT: ROADS MAY BECOME SLIPPERY DUE TO SNOW. TRAVEL MAY  BECOME DIFFICULT.* ACCUMULATIONS: FIVE TO EIGHT INCHES OF SNOW.* TIMING: RAIN....WILL CHANGE OVER TO ALL SNOW LATE THIS  AFTERNOON. SNOW WILL CONTINUE TONIGHT BEFORE DIMINISHING LATE  TONIGHT. MODERATE TO OCCASIONALLY HEAVY SNOW IS POSSIBLE THIS  EVENING.
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LOT afd: I like this part the best

 

MODEL CROSS SECTIONS ACROSS THE AREA INDICATE VERY STRONG FORCING
FOR ASCENT IN THE DENDRITIC GROWTH ZONE THROUGH THE
AFTERNOON...ALONG WITH SOME -EPV IN THE MID LEVELS...INDICATING THE
PRESENCE OF STEEP MID LEVEL LAPSE RATES. THE INVERTED SURFACE LOW
PRESSURE TROUGH SHOULD PIVOT ACROSS THE AREA THROUGH THE AFTERNOON
AND INTO THE EARLY EVENING...LIKELY RESULTING IN SEVERAL HOURS OF
HEAVY SNOW RATES IN A BAND RIGHT ACROSS THE CWA. WITH THIS IN
MIND...IT APPEARS THAT 7 TO 10 INCHES AMOUNTS...WITH SOME AMOUNTS IN
EXCESS OF A FOOT WILL BE POSSIBLE BY THIS EVENING. UPDATED FORECAST
AMOUNTS WILL BE ISSUED SHORTLY.

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