WEATHER UPDATE

Tuesday’s snowstorm to be driven by consolidation of two low pressure systems

Posted on: March 4th, 2013 8:31 PM by Steve Kahn No Comments

 

As the southeastward moving  low pressure system over the Dakotas combines with the northeastward moving low over northeast Oklahoma a single intensifying low pressure system will move east through the Ohio Valley spreading a band of heavy snow across portions of the central Midwest including the Chicago Metro area. As the low pressure intensifies east to northeast winds will increasing to 20-30 mph with higher gusts causing much blowing and drifting of the snow.  In the Chicago area light snow will begin overnight and gradually becoming steadier and heavier by daybreak.  The heaviest snowfall is expected to occur between 10am and 10 pm Tuesday with accumulations of 1 to 2 inches an hour possible. Visibilities will drop to 1/4 mile or less in the areas of  heaviest snowfall with whiteout conditions in open areas.

Total accumulations should range from 6 to 12 inches with locally higher amounts. Current indications are that the heaviest snow accumulations will occur from Chicago south, unlike previous snowfalls this season which have targeted the north portions of the Chicago Metro area.

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Latest surface weather map 6pm Monday evening 00Z

Winter Storm conditions will impact at least 19 states today into Wednesday (first map below). The Chicago area under Winter Storm Warning all of Tuesday from Midnight tonight until midnight Tuesday night

Posted on: March 4th, 2013 6:38 AM by Paul Dailey No Comments

 

 

From 5 to 10 inches of snow is expected to fall across the Chicago metro area Tuesday with travel conditions – both land and air - deteriorating rapidly Tuesday forenoon – severely-impacted conditions continuing through the afternoon into the evening hours.

 

A band of light snow has developed well in advance of the main low pressure system and could spread into the Chicago area later today and this evening, but air is so dry here that much of this snowfall will evaporate before reaching the ground – the main system snow – 5 to 10 inches – is set to arrive during the Tuesday morning rush hours – intensifying later that morning into the afternoon with the Tuesday afternoon-evening commute fully impacted.

 

Low pressure extends from North Dakota south into the central plains will track east-southeast during the next 24 to 36 hours – passing through Illinois Tuesday and continuing on to the east coast Wednesday. The map below depicts the areas forecast to be under winter weather conditions from Blizzard Warnings in northeast Montana and northwest North Dakota (red) to Winter Storm Warnings (pink-shaded) and Advisories (purple) over portions of North and South Dakota, Minnesota, Wisconsin, Iowa and Illinois. Winter Storm Watches are up farther east through northern Indiana and the southern tip of Lower Michigan into northwest Ohio and then to the east coast. 

 

The National Storm Prediction Center has issued man-computer model mix maps depicting the  probability of 4 and 8 inches of snow from 6am Tuesday until 6am Wednesday. Much of northern Illinois and Indiana and all of the Chicago area falls in the red – well over a 70 percent probability of 4 inches and (last map) nearly 50 percent area of 8-inches.

                                                      Winter Storm Depiction Map 

NWS Watch, Warning, Advisory Map

 

                         Probability of at least 4 inches of snow 6am Tueday - 6am Wednesday

                              Probability of at least 8-inches of snow 6am Tuesday - 6am Wednesday

Lake-effect snow occurring this morning

Posted on: March 1st, 2013 10:23 AM by Steve Kahn No Comments

 

Cold air flowing south down the length of Lake Michigan is producing lake-effect snow in lakeside counties of the Chicago Metro area this morning. The heav iest concentration of snow showers appears to be at the south end of the lake in southeastern Cook County and in the northwest portions of Lake County, Indiana. While most areas will get less than 1 inch of snow local 1-3 inch accumulations are possible .

 

 

Winter Weather Advisory in effect for northeast Illinois – at 8am east-west band of rain/snow/sleet moving north approaching Interstate-80

Posted on: February 26th, 2013 8:32 AM by Paul Dailey No Comments

 

 

At 8am this morning, observations indicate a rain/sleet/snow combination creeping north toward the Chicago area – oriented east-west just south of and paralleling Interstate-80. It appears that precipitation starts off  as rain or as rain/sleet cobination, but quickly changes over to a wet snow. Temperatures are at or just above 32-degrees, so at this point at the start of the precipitation, roads will initially be mainly wet and slushy, but as snow continues, travel could quickly become more hazardous.

 

At 8am just south of Interstate-80,  Dwight in Livingston County had heavy snow, Bonfield in Kankakee Countywas experiencing sleet while Kankakee itself reprted rain had changed over to snow. It was snowing in Lacon in Marshall County. Farther to the west heavy snow was reported in Quincy, Galesburg and McComb.

Northern Illinois including Chicago looks to be in for a 3 to 5-inch snowfall Tuesday with additional lake-enhanced snowfall possible

Posted on: February 25th, 2013 3:23 PM by Paul Dailey No Comments

 

 

Across northern Illinois including the Chicago area, the southeast corner of Wisconsin, northern Indiana and much of Lower Michigan a band of heavy wet snow - in general 3 to 5 inches is expected to fall Tuesday. As northeast winds strengthen - gusting well over 40 miles per hour - precipitation in the Chicago area could start out with a sleet/snow mix by midday Tuesday and then change over to a heavy wet snow later in the afternoon. Snow will accumulate along with blowing and drifting during the late afternoon and evening - then taper off somewhat later at night or early Wednesday. Along and inland of the Illinois Lake Michigan shoreline, the strong winds off the lake may enhance snowfall - with additional accumulations possible.

 

An intensifying center of low pressure was expected to move out of  north-central Texas through Arkansas today and then northeast up the Ohio River Valley through southern and central Indiana Tuesday reaching the Lake Erie area early Wednesday. North of this storm track, a mixture of snow and sleet with spots of freezing rain will gradually change over to an accumulating heavy wet snow.

 

Blizzard and Winter Storm Warnings for 12 to 18 inches of blowing and drifting snow from the Texas panhandle through portions of Kansas and Oklahoma today and early Tuesday. A Winter Storm Warning for 10 to 15 inches of  blowing and drifting snow is in effect for portions of eastern Kansas into western Missouri, and a similar warning for 6 to 10 inches in eastern Missouri into west-central Illinois late tonight into Tuesday.

 

Once the low center moves well east of us over northern Ohio, a strong north to northwest flow on the back side to the low will create additional lake-effect snows in northern Indiana and Lower Michigan later Wednesday.

 

Below is a map depicting the Blizzard Warning (orange), Winter Storm Warnings/Advisories (light pink and purple), and Winter Storm Watch (greenish-blue) areas.

This image displays watches, warnings, statements and advisories issued by the National Weather Service

High probability of heavy snow over the Chicago area Tuesday – in line for combination one-two punch of system as well as lake-enhanced snowfall

Posted on: February 25th, 2013 3:46 PM by Paul Dailey No Comments

 

 

There is a 70 percent chance or greater for at least 4 inches of snow across the Chicago area Tuesday according to a computer driven/forecaster mix derived by the National Weather Service. The two maps below portray the chances of a four-inch or greater and an 8-inch  or greater snowfall from 6pm Monday until 6pm Tuesday.

 

With the intensifying center of low pressure tracking up the Ohio River Valley through Indiana into Ohio Tuesday, strong winds in our area will be out of the northeast off of Lake Michigan for an extended period of time. Thus Illinois lakefront locations and immediately inland will bear the impact of the combined storm snowfall as well as the enhanced lake-effect snowfall associated with this storm.

 

The first map below shows northern Illinois and the Chicago area in the highest probability (70 percent or greater – outlined in red). The second map displays the probability of 8-inches or more during this time period, and approximently the same area of Illinois is outlined in green indicating at least a 40 percent chance of 8-inches during the 24-hour period beginning 6am this evening.

                                                             Probability of 4-inches or more snowfall 6pm Monday - 6pm Tuesday

 

 

                                                             Probability of 8-inches or more snowfall 6pm Monday - 6pm Tuesday

Northeast Illinois including Chicago , southeast Wisconsin and northwest Indiana are in line for potentially heavy snow Tuesday

Posted on: February 24th, 2013 4:26 PM by Paul Dailey No Comments

 

A major winter storm is expected to move out of the Texas panhandle northeast Monday with a variety of Blizzard and Winter Storm Warnings (orange and light pink areas on map below) for 6 to 12-inches of blowing and drifting snow across portions of Colorado, Kansas and Oklahoma later Sunday into Monday and Winter Storm Watches already up for parts of Missouri, west-central Illinois, northern Indiana and most of Lower Michigan for later Monday through Tuesday.

 

In general 3 to 7 inches of snow is expected to fall Tuesday across northern Illinois and northwest Indiana into lower Michigan - early Tuesday sleet and patches of freezing rain could create glaze and slick conditions south of Interstate-80 before precipitation changes over to all snow later in the day.

The National Weather Service snowfall outlooks for 6pm Monday to 6pm Tuesday (second map) and 6pm Tuesday to 6pm Wednesday (third map) has Chicago in the 40% probability area for at least 4 inches of snow (green-outlined area on second and third maps below) for each of the two 24-hour periods.

 

This image displays watches, warnings, statements and advisories issued by the National Weather Service

 

 

A summary of last night’s snowfall across the Chicago Metro area

Posted on: February 22nd, 2013 2:58 PM by Steve Kahn No Comments

 

Thanks to the National Weather Service Forecast Office in Romeoville for providing this very complete summary of last night's snowfall across the Chicago Metro area.

 

 

Summary of Snowfall over Northeast IL and Northwest IN

Here is a map of snowfall across northern Illinois and northwest Indiana for the 24 hour period ending 700 AM CST February 22, 2013. This product is an objective analysis of NWS Cooperative Observer Program (COOP) and Community Collaborative Rain, Hail and Snow Network (CoCoRaHS) snowfall reports.  CoCoRaHS data is from non-NWS sources and may have not been fully quality controlled.

Snowfall map for February 21-22 2013

PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE CHICAGO IL
1016 AM CST FRI FEB 22 2013

...MORNING SNOWFALL ROUNDUP...

   THE FOLLOWING ARE SNOW AMOUNTS FOR THE PREVIOUS 24-HOURS.
   OBSERVATIONS ARE USUALLY TAKEN AT 7 AM.

   24-HOUR SNOWFALL AMOUNTS FOR FRIDAY(02/22/13)...

NORTHERN ILLINOIS                              SNOW
  LOCATION (COUNTY):                           FALL(INCHES)

  WOODSTOCK 2WSW (MCHENRY)......................5.0
  HARVARD (MCHENRY).............................4.0
  ROCKFORD 3NE (WINNEBAGO)......................4.0
  DOWNERS GROVE (COOK)..........................3.8
  CHICAGO 6ESE (COOK)...........................3.6
  WONDER LAKE 1WNW (MCHENRY)....................3.6
  HOFFMAN ESTATES 5W (COOK).....................3.5
  SOUTH WILMINGTON 2E (GRUNDY)..................3.5
  LAKE VILLA 1SSW (LAKE)........................3.5
  HIGHWOOD 1S (LAKE)............................3.5
  LOCKPORT 1SE (WILL)...........................3.5
  MARENGO (MCHENRY).............................3.5
  ROMEOVILLE (WILL).............................3.4
  WOODSTOCK 5NW (MCHENRY).......................3.4
  GENOA (DE KALB)...............................3.3
  DE KALB (DE KALB).............................3.3
  GURNEE 2W (LAKE)..............................3.3
  BULL VALLEY 2WNW (MCHENRY)....................3.3
  MIDWAY COOP (COOK)............................3.3
  AURORA (KANE).................................3.2
  BOTANIC GARDENS (COOK)........................3.2
  CAPRON (BOONE)................................3.2
  SCHAUMBURG  2E (COOK).........................3.2
  SCHAUMBURG (COOK).............................3.2
  OAK PARK 1NNE (COOK)..........................3.2
  GRAYSLAKE (LAKE)..............................3.2
  BURNHAM-HEGEWISCH 2NNW (COOK).................3.2
  CLARENDON HILLS 1S (DU PAGE)..................3.2
  PLAINFIELD 5SW (KENDALL)......................3.2
  BEACH PARK 1W (LAKE)..........................3.2
  PONTIAC 1ESE (LIVINGSTON).....................3.2
  CARY (MCHENRY)................................3.2
  OAK LAWN (COOK)...............................3.1
  NAPERVILLE 1NW (DU PAGE)......................3.1
  LINCOLNSHIRE 1N (LAKE)........................3.1
  JOLIET 2N (WILL)..............................3.1
  ST CHARLES 7NW (KANE).........................3.1
  BARRINGTON (LAKE).............................3.0
  ELBURN (KANE).................................3.0
  WILLOWBROOK (COOK)............................3.0
  OAK PARK 2S (COOK)............................3.0
  ALSIP (COOK)..................................3.0
  HARWOOD HEIGHTS 2NNE (COOK)...................3.0
  PALOS PARK 1SW (COOK).........................3.0
  LA GRANGE PARK 1SSW (COOK)....................3.0
  MELROSE PARK (COOK)...........................3.0
  ELMHURST 1ESE (DU PAGE).......................3.0
  BURR RIDGE 2SW (DU PAGE)......................3.0
  SUGAR GROVE 1NE (KANE)........................3.0
  ELGIN 1WSW (KANE).............................3.0
  ELBURN 3NNE (KANE)............................3.0
  ST. CHARLES (KANE)............................3.0
  GENEVA 1SSW (KANE)............................3.0
  FOX LAKE 2SE (LAKE)...........................3.0
  HUNTLEY 4W (MCHENRY)..........................3.0
  ALGONQUIN 1N (MCHENRY)........................3.0
  HOMER GLEN 1ENE (WILL)........................3.0
  PLAINFIELD 2SSE (WILL)........................3.0
  NEW LENOX 2SE (WILL)..........................3.0
  ROCKTON 1ESE (WINNEBAGO)......................3.0
  JOLIET LOCK/DAM (WILL)........................3.0
  LAKE ZURICH (LAKE)............................3.0
  LA GRANGE (COOK)..............................3.0
  MENDOTA (LA SALLE)............................3.0
  MCHENRY (MCHENRY).............................3.0
  PAW PAW (LEE).................................3.0
  ST CHARLES (KANE).............................3.0
  LISLE MORTON ARB (DU PAGE)....................3.0
  WINFIELD (DU PAGE)............................3.0
  LISLE 1SE (DU PAGE)...........................2.9
  HAWTHORN WOODS 1N (LAKE)......................2.9
  PLAINFIELD 1SW (WILL).........................2.9
  MUNDELEIN (LAKE)..............................2.9
  OAK BROOK (DU PAGE)...........................2.9
  PALATINE 1E (COOK)............................2.8
  PARK RIDGE (COOK).............................2.8
  LINCOLNWOOD 2E (COOK).........................2.8
  BOLINGBROOK 3NE (DU PAGE).....................2.8
  LISLE (DU PAGE)...............................2.8
  ELGIN 2W (KANE)...............................2.8
  MARSEILLES 3NW (LA SALLE).....................2.8
  NEW LENOX 3E (WILL)...........................2.8
  JOLIET (WILL).................................2.8
  KANKAKEE (KANKAKEE)...........................2.8
  ROCKFORD 4NW (WINNEBAGO)......................2.8
  YORKVILLE 2SE (KENDALL).......................2.8
  CHICAGO RIDGE (COOK)..........................2.7
  ORLAND HILLS 1SE (COOK).......................2.7
  ELK GROVE VILLAGE 2WSW (COOK).................2.7
  LA SALLE (LA SALLE)...........................2.7
  MOKENA 1W (WILL)..............................2.7
  ROSCOE 2ESE (WINNEBAGO).......................2.7
  MONEE (WILL)..................................2.7
  OHARE (COOK)..................................2.7
  ROCKFORD (WINNEBAGO)..........................2.7
  ROSCOE 2SE (WINNEBAGO)........................2.7
  STEWARD (LEE).................................2.7
  CHANNAHON (WILL)..............................2.6
  COAL CITY 4NNW (GRUNDY).......................2.6
  ARLINGTON HEIGHTS 2NNW (COOK).................2.6
  COUNTRYSIDE 1ENE (COOK).......................2.6
  COUNTRYSIDE 1NNE (COOK).......................2.6
  GENEVA 1N (KANE)..............................2.6
  PLAINFIELD (WILL).............................2.6
  EARLVILLE 3S (LA SALLE).......................2.5
  HEBRON (MCHENRY)..............................2.5
  SCHAUMBURG 3WSW (COOK)........................2.5
  WORTH (COOK)..................................2.5
  ORLAND HILLS 1S (COOK)........................2.5
  ELK GROVE VILLAGE 1ESE (COOK).................2.5
  WESTMONT 1SSE (DU PAGE).......................2.5
  DOWNERS GROVE 2SE (DU PAGE)...................2.5
  BARTLETT 1SSE (DU PAGE).......................2.5
  MONTGOMERY 2SSE (KENDALL).....................2.5
  YORKVILLE 1NE (KENDALL).......................2.5
  BATAVIA 2WNW (KANE)...........................2.5
  DIXON 2SW (LEE)...............................2.5
  SHERIDAN (LA SALLE)...........................2.5
  OTTAWA 2N (LA SALLE)..........................2.5
  MARSEILLES 6WNW (LA SALLE)....................2.5
  OGLESBY 1ESE (LA SALLE).......................2.5
  OTTAWA (LA SALLE).............................2.5
  STREATOR 1WSW (LA SALLE)......................2.5
  PEOTONE (WILL)................................2.5
  WILMINGTON 3SE (WILL).........................2.5
  ROCKFORD 1NW (WINNEBAGO)......................2.5
  PARK FOREST (COOK)............................2.5
  ELGIN (KANE)..................................2.4
  CAROL STREAM (DU PAGE)........................2.4
  MONTGOMERY 1SSE (KENDALL).....................2.4
  BATAVIA 1WNW (KANE)...........................2.4
  JOLIET 1ENE (WILL)............................2.4
  NORTH AURORA 2NE (KANE).......................2.3
  MENDOTA 2SE (LA SALLE)........................2.3
  BOURBONNAIS 2NNE (KANKAKEE)...................2.2
  ST. CHARLES 6NW (KANE)........................2.2
  CARY 2NE (MCHENRY)............................2.2
  MANHATTAN 5ENE (WILL).........................2.2
  MANHATTAN (WILL)..............................2.2
  MORRIS (GRUNDY)...............................2.2
  DE KALB (DE KALB).............................2.1
  PARK FOREST 1NNE (COOK).......................2.1
  CORTLAND (DE KALB)............................2.1
  CRETE 3E (WILL)...............................2.1
  PEOTONE (WILL)................................2.1
  OTTAWA (LA SALLE).............................2.1
  PEOTONE (WILL)................................2.1
  SHABBONA (DE KALB)............................2.1
  DWIGHT (LIVINGSTON)...........................2.0
  AURORA 4SE (DU PAGE)..........................2.0
  BONFIELD 4WSW (KANKAKEE)......................2.0
  SUBLETTE (LEE)................................2.0
  WAUKEGAN 2N (LAKE)............................2.0
  OTTAWA 1NW (LA SALLE).........................2.0
  SENECA 2SSW (LA SALLE)........................2.0
  BYRON 3N (OGLE)...............................2.0
  NEW LENOX 4SE (WILL)..........................2.0
  ELGIN (KANE)..................................1.8
  ASHTON (LEE)..................................1.8
  MARSEILLES (LA SALLE).........................1.8
  ST ANNE (KANKAKEE)............................1.8
  BEECHER (WILL)................................1.8
  BATAVIA (KANE)................................1.7
  MAZON (GRUNDY)................................1.7
  PONTIAC (LIVINGSTON)..........................1.7
  DRESDEN LOCK/DAM (GRUNDY).....................1.6
  KANKAKEE 3SE (KANKAKEE).......................1.6
  BOURBONNAIS (KANKAKEE)........................1.5
  BRACEVILLE (GRUNDY)...........................1.5
  WATSEKA 5W (IROQUOIS).........................1.5
  MENDOTA 1N (LA SALLE).........................1.5
  STREATOR 4ENE (LA SALLE)......................1.5
  JOLIET 3WNW (WILL)............................1.5
  ROCHELLE (OGLE)...............................1.5
  AMBOY (LEE)...................................1.3
  FAIRBURY (LIVINGSTON).........................1.0
  MILFORD (IROQUOIS)............................1.0
  PAXTON (FORD).................................1.0
  WATSEKA (IROQUOIS)............................1.0
  CHATSWORTH (LIVINGSTON).......................0.5

NORTHWEST INDIANA                              SNOW
  LOCATION (COUNTY):                           FALL(INCHES)

  LAKE VILLAGE (NEWTON).........................3.6
  HIGHLAND (LAKE)...............................3.2
  (W9MAL)MERRILLVILLE 2NNW (LAKE)...............3.0
  ST. JOHN (LAKE)...............................2.8
  SCHERERVILLE 2WSW (LAKE)......................2.7
  VALPARAISO 6WSW (PORTER)......................2.3
  PORTAGE 1ESE (PORTER).........................2.2
  LAKES OF THE FOUR SEASONS 2NNE (PORTER).......2.1
  VALPARAISO 1ENE (PORTER)......................2.1
  PORTER 1S (PORTER)............................2.1
  DE MOTTE 1SSW (JASPER)........................2.0
  REMINGTON (JASPER)............................2.0
  (W9OPR)WHEATFIELD 1ENE (JASPER)...............2.0
  KENTLAND 1NNW (NEWTON)........................2.0
  BROOK 4W (NEWTON).............................2.0
  LAKES OF THE FOUR SEASONS (PORTER)............2.0
  VALPARAISO 2N (PORTER)........................2.0
  RENSSELAER 6SE (JASPER).......................1.8
  VALPARAISO 1SE (PORTER).......................1.8
  VALPARAISO 6SSW (PORTER)......................1.8
  RENSSELAER (JASPER)...........................1.8
  CROWN POINT 1N (LAKE).........................1.6
  VALPARAISO 5NNE (PORTER)......................1.6
  REMINGTON (JASPER)............................1.6
  VALPARAISO 5NNE (PORTER)......................1.6
  (WV90)HOBART 1ENE (LAKE)......................1.5
  VALPARAISO 1NE (PORTER).......................1.5
  HEBRON 4NE (PORTER)...........................1.4
  VALPARAISO 6NW (PORTER).......................1.4
  MOUNT AYR 2NNE (NEWTON).......................1.3
  VALPARAISO 1NNW (PORTER)......................1.3
  CROWN POINT 8E (PORTER).......................1.2
  VALPARAISO 4SW (PORTER).......................1.0
  (KB9F)VALPARAISO 4S (PORTER)..................1.0
  DE MOTTE 4SW (JASPER).........................0.7
  VALPARAISO 2NW (PORTER).......................0.7
  DE MOTTE 6S (JASPER)..........................0.4

 

Massive Winter Storm impacts huge portion of central United States – main impact 3 to as much as 7 inches of snow in Chicago area tonight into Friday morning

Posted on: February 21st, 2013 5:05 AM by Paul Dailey No Comments

 

 

As depicted on the map below, low pressure will move northeast out of the southern plains today spreading up to a foot and a half of heavy snow over portions of Colorado, Kansas and Nebraska. Snowfall of 5 to 8 inches will fall over Iowa and northern Missouri. A mix of snow, sleet and freezing rain is expected from southern Missouri east-northeast up the Ohio River Valley into southern and central Illinois, Indiana, Ohio into West Virginia. Severe thunderstorms are forecast in Texas, Louisiana, and Mississippi.

 

Here in the Chicago area the Winter Weather Advisory for 3 to as much as 7 inches of snow continues in effect for tonight into Friday.

On the Map Winter Warnings are in pink and Winter Weather Advisories in purple.

 

NWS Watch, Warning, Advisory Map

Winter Weather Advisories Thursday into Friday For 3 To 6 Inches of blowing snow and areas of freezing rain for Illinois, southern Wisconsin and a portion of northwest Indiana

Posted on: February 20th, 2013 5:02 PM by Paul Dailey No Comments

 

Low pressure moving northeast out of the southern plains will spread heavy blowing snow and freezing rain over potions of the central and northern plains Wednesday into Thursday and the Midwest, western Great Lakes and Ohio Valley Thursday into Friday. Winter Weather Advisories for 3 to 6 inches of blowing snow is in effect Thursday night into Friday for southern Wisconsin and several bordering Illinois counties. The remainder of northeast Illinois including Chicago and the northwest corner of Indiana are under a Winter Weather Advisory Thursday evening into Friday for 3 to 5 inches of blowing snow and the possibility of freezing rain in some areas during that timeframe.

Following is a consolidated Winter Weather Advisory issued by the Chicago National Weather Service Forecast Office, and below that a map depicting the areas under warnings and advisories - the areas in purple are the Winter Weather Advisories and in pink are the current Warning areas.

 

THE NATIONAL WEATHER SERVICE IN CHICAGO HAS ISSUED A WINTER
WEATHER ADVISORY FOR SNOW AND FREEZING RAIN WHICH IS IN EFFECT
FROM THURSDAY EVENING THROUGH FRIDAY AFTERNOON

THE ADVISORY INCLUDES THE FOLLOWING COUNTIES IN ILLINOIS
MCHENRY-LAKE IL-KANE-DUPAGE-COOK-KENDALL-WILL-LASALLE

-GRUNDY-KANKAKEE-LIVINGSTON-IROQUOIS-FORD

AND IN INDIANA- LAKE-PORTER-NEWTON-JASPER-BENTON-
INCLUDING THE CITIES OF...WHEATON...CHICAGO...OSWEGO...JOLIET...

WOODSTOCK...WAUKEGAN...AURORA...OTTAWA...MORRIS...KANKAKEE...

PONTIAC...
AND IN INDIANA THE CITIES OF...GARY...VALPARAISO...WATSEKA...

PAXTON...MOROCCO...RENSSELAER...AND FOWLER

 

...WINTER WEATHER ADVISORY IN EFFECT FROM 9 PM THURSDAY TO 6 PM
CST FRIDAY...

* TIMING...SNOW IS EXPECTED TO DEVELOP THURSDAY EVENING AND
  CONTINUE INTO FRIDAY. THE SNOW MAY MIX WITH LIGHT FREEZING
  DRIZZLE OR LIGHT FREEZING RAIN FRIDAY MORNING.

* MAIN IMPACT...STORM TOTAL SNOWFALL AMOUNTS OF 3 TO 5 INCHES ARE
  EXPECTED. ICE ACCUMULATIONS WILL BE LESS THAN A TENTH OF AN
  INCH.

* OTHER IMPACTS...A PERIOD OF HEAVY SNOW WITH SNOW FALL RATES OF
  ONE INCH PER HOUR IS POSSIBLE LATE THURSDAY EVENING INTO THE
  OVERNIGHT HOURS.

 

A WINTER WEATHER ADVISORY FOR 3 TO 5 INCHES OF BLOWING SNOW

THURSDAY EVENING INTO FRIDAY AFTERNOON FOR THE FOLLOWING

ILLINOIS COUNTIES...WINNEBAGO-BOONE-OGLE-LEE-DE KALB-
INCLUDING THE CITIES OF...ROCKFORD...BELVIDERE...OREGON...DIXON...
DEKALB

 

* TIMING...SNOW IS EXPECTED TO DEVELOP THURSDAY EVENING AND
  CONTINUE INTO FRIDAY.

* MAIN IMPACT...STORM TOTAL SNOWFALL AMOUNTS OF 3 TO 5 INCHES

ALONG WITH BLOWING SNOW ARE  EXPECTED.

* OTHER IMPACTS...A PERIOD OF HEAVY SNOW WITH SNOW FALL RATES OF
  ONE INCH PER HOUR IS POSSIBLE LATE THURSDAY EVENING INTO THE
  OVERNIGHT HOURS.

 

This image displays watches, warnings, statements and advisories issued by the National Weather Service