Cold in Illinois, January 23, 2014

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
1108 PM CST WED JAN 22 2014

.DISCUSSION...

UPDATED...

415 PM CST

HAVE ELECTED TO ISSUE A WINTER WEATHER ADVISORY FOR SNOW/BLOWING SNOW
THROUGH 4 AM CST. SEVERAL REPORTS RECEIVED FROM COUNTIES WEST OF
CHICAGO OF NEAR ZERO VISIBILITY IN BLOWING SNOW.

SURFACE COLD FRONT ABOUT TO THE INTERSTATE 55 CORRIDOR AT 4 PM
CST...AND WILL CONTINUE TO PUSH EAST ACROSS THE REMAINDER OF THE
CWA OVER THE NEXT COUPLE OF HOURS. COLDER LOW LEVEL TEMPS...AND
STEEPENING OF LOW LEVEL LAPSE RATES PER VARIOUS MODEL SOUNDINGS
ARE RESULTING IN MORE CONVECTIVE SNOW SHOWER DEVELOPMENT AIDED BY
MID-LEVEL SHORT WAVE SWIPING SOUTHEAST ACROSS SOUTHERN WI/NORTHERN
IL AT THIS HOUR. RESULTING SNOW SHOWERS WERE REDUCING VISIBILITY
TO AS LOW AS 1/4-1/2SM IN A FEW SPOTS. WHILE OF SHORT DURATION...
THESE SNOW SHOWERS MAY PRODUCE UP TO AN INCH OF NEW ACCUMULATION
WITH BETTER SNOWFALL RATES AS DGZ WITHIN MOIST LOW LEVEL STEEP
LAPSE RATE ENVIRONMENT.

IN ADDITION...WINDS ARE INCREASING FROM THE WEST-NORTHWEST BEHIND
THE FRONT AND GUSTING 25-30 KT. THE POWDERY NATURE OF THE NEW
FALLEN SNOW FROM TODAY WAS PRODUCING SOME SIGNIFICANT BLOWING SNOW
WITH SEVERAL REPORTS OF WHITE-OUT CONDITIONS FROM SOME OF THE
COUNTIES WEST OF THE CHICAGO AREA AT THIS TIME. THUS WHILE FALLING
SNOW SHOULD TAPER TO FLURRIES/END EARLY THIS EVENING...GUSTY WINDS
WILL LIKELY CONTINUE TO PRESENT A BLOWING/DRIFTING SNOW HAZARD
ACROSS THE REGION INTO THE OVERNIGHT HOURS BEFORE WINDS VERY
GRADUALLY SLACKEN THURSDAY MORNING. THUS HAVE ISSUED A WINTER
WEATHER ADVISORY FOR BLOWING SNOW THROUGH 4 AM CST...IN ADDITION
TO THE WIND CHILL WARNING/ADVISORY HEADLINES THAT WERE ISSUED
PREVIOUSLY.

RATZER

PREVIOUS DISCUSSION...

310 PM CST

THE RATHER HARSH WINTER WEATHER CONDITIONS FOR THE NEXT SEVERAL DAYS.

FOR THE REMAINDER OF THE AFTERNOON AND THROUGH TONIGHT...THE PRIMARY
CONCERNS WILL BE THE ONGOING LIGHT SNOW AND DECREASING
TEMPERATURES.  AS OF 200PM CST...THE COLD FRONT HAS PUSHED TO A LINE
FROM WAUKEGAN TO PONTIAC WITH WINDS SHIFTING TO NWLY AND
STRENGTHENING WHILE TEMPERATURES BEGIN TO DROP WITH THE ONSET OF THE
STRONG COLD ADVECTION.  THE FRONT WILL STEADILY PUSH TO THE SOUTH
AND EAST...PUSHING THROUGH THE CWA BY AROUND SUNSET.  THERE IS A
BAND OF THICK CLOUDINESS WITH THE MAIN BAROCLINIC BAND...WITH
DIURNAL STRATOCU TRAILING BEHIND.  WITH SUNSET...THE DIURNAL
STRATOCU SHOULD DIMINISH AND UNDER CLEARING SKIES AND A FRESH INCH
OR SO OF NEW SNOW...TEMPERATURES SHOULD DROP RAPIDLY.  ALSO...WITH
LESS CLOUD COVER THAN PREVIOUSLY ANTICIPATED...HAVE ADJUSTED MIN
TEMPS DOWN A FEW DEGREES TONIGHT...ESPECIALLY OVER THE NWRN PORTIONS
OF THE CWA.  THIS DROP IN FORECAST TEMPS TONIGHT SHOULD DROP WIND
CHILLS BELOW -30F OVER THE PORTIONS OF THE AREA ALONG AND WEST OF
THE FOX VALLEY AND NORTH OF I-80.  SO...HAVE UPGRADED A PORTION OF
THE WIND CHILL ADVISORY TO A WIND CHILL WARNING.  STILL HAVE SOME
CONCERNS THAT AT LEAST SOME AREAS ADJACENT TO THE WARNING COULD SEE
WIND CHILLS DROP INTO THE -30F RANGE...ESPECIALLY NORTHERN PORTIONS
OF LASALLE AND GRUNDY COUNTIES...BUT HAVE LEFT THEM IN THE ADVISORY
FOR NOW.  HAVE ALSO EXTENDED THE END TIME OF THE ADVISORY FOR A FEW
MORE HOURS TOMORROW MORNING AS THE BRISK WINDS SHOULD KEEP WIND
CHILLS IN THE -20F RANGE A LITTLE LONGER AS WELL.

FOR THE REMAINDER OF THE SHORT TERM FORECAST PERIOD...AND EVEN
THROUGH THE EXTENDED FORECAST PERIOD...EXPECT LITTLE CHANGE TO THE
OVERALL WEATHER PATTERN.  A SHARP UPPER RIDGING ALONG THE WEST COAST
AND BROAD UPPER TROUGHING OVER THE ERN TWO THIRDS OF NORTH AMERICA
WILL SEE LITTLE PROGRESSION THROUGH EARLY NEXT WEEK.  SO...THE MAIN
STORY WILL BE CONTINUED COLD WITH A MORE CLIPPERS BRINGING
ADDITIONAL CHANCES FOR SNOW TO THE AREA.  THE ONLY CHANCE FOR
SOMEWHAT NORMAL TEMPERATURES ACROSS THE AREA WILL BE FRIDAY INTO
SATURDAY.  WITH WEAK SHORTWAVE RIDGING BUILDING IN BEHIND THE
CLIPPER IMPACTING THE REGION TODAY THROUGH TOMORROW...TEMPERATURES
ON FRIDAY SHOULD REBOUND INTO THE MIDDLE 20S.  BY SATURDAY
NIGHT...ANOTHER REINFORCING SHOT OF COLD AIR WILL DROP ACROSS THE
REGION AND TEMPS FOR SATURDAY MORNING SHOULD BE BACK INTO THE SINGLE
DIGITS.  THE NEXT STRONG CLIPPER SHOULD TAKE AIM AT THE REGION
SUNDAY MORNING.  AT THIS POINT...THE GENERAL MODEL CONSENSUS IS
TRACKING THE SYSTEM THROUGH SRN WISCONSIN AND NRN ILLINOIS TO SRN
LAKE MICHIGAN AND NRN INDIANA.  HAVE BASED THE LATEST FORECAST
UPDATE ON A 50-50 BLEND OF THE GFS AND ECMWF WHICH HAVE SIMILAR
TRACKS BUT HAS SLIGHT TIMING DIFFERENCES.  THIS SYSTEM SHOULD BRING
MEASURABLE SNOW...BUT AMOUNTS ARE STILL A BIG QUESTION MARK.  AS WITH
ALL CLIPPERS...SNOWFALL AMOUNTS WILL BE HIGHLY DEPENDENT OF THE
EXACT TRACK OF THE SYSTEM...WITH A SHARP GRADIENT TO THE SNOWFALL ON
THE SOUTHERN END OF THE SYSTEM AND A MORE GRADUAL DROP-OFF TO THE
NORTH OF THE TRACK OF THE CENTER.  BASED ON CURRENT THINKING...HAVE
INCREASED POPS TO 60-70% FOR LOCATION NORTH OF THE IL/KANKAKEE
RIVERS...AND A SHARP DROP-OFF TO THE SOUTH.  WHILE IT IS A BIT EARLY
TO REALLY NAIL DOWN SNOWFALL AMOUNTS FOR A CLIPPER TYPE
SYSTEM...ESPECIALLY GIVEN THE DEPENDENCE ON THE EXACT TRACK...BUT
THERE IS A CHANCE THAT PORTIONS OF THE CWA...ESPECIALLY NORTH TOWARD
THE WISCONSIN BORDER COULD SEE A FEW INCHES.  FOLLOWING THE PASSAGE
OF THE CLIPPER AND THE ENDING OF THE SNOWFALL...ANOTHER SHOT OF VERY
COLD AIR WILL OVERSPREAD THE REGION.  SUB-ZERO MIN TEMPERATURES ARE
EXPECTED FOR MONDAY THROUGH THURSDAY MORNING.  THE COLDEST PERIOD IS
SHAPING UP FOR TUESDAY MORNING...WHEN TEMPS COULD APPROACH -10 TO
-15F AND WIND CHILLS COULD APPROACH THE -30F RANGE...WHILE MONDAY
MORNING AND WEDNESDAY MORNING COULD SEE WIND CHILLS REACHING INTO
THE -20 TO -25F RANGE.

KREIN

&&

.AVIATION...

//ORD AND MDW CONCERNS...UPDATED 06Z...

* STRONG WEST-NORTHWEST WINDS 300-330 DEG GUSTING UP TO 25 KT
  PRODUCING AREAS OF BLOWING SNOW. OCNL BRIEF MVFR VSBY POSSIBLE
  OVERNIGHT IN BLSN.

* NORTHWEST WINDS GRADUALLY DIMINISH LATE TONIGHT AND THURSDAY
  WHILE BACKING MORE WESTERLY.

KJB

//DISCUSSION...UPDATED 06Z...

ASIDE FROM SOME GUSTY WEST-NORTHWESTERLY WINDS THROUGH THE
PERIOD...WEATHER CONDITIONS SHOULD BE QUIET UNTIL FRIDAY ACROSS THE
AREA WITH PRIMARILY VFR CONDITIONS.

AN AREA OF LOW PRESSURE...CURRENTLY ACROSS LOWER MICHIGAN...WILL
SHIFT EASTWARD ACROSS THE LOWER GREAT LAKES REGION DURING THE DAY.
MEANWHILE...A STOUT AREA OF HIGH PRESSURE ACROSS THE DAKOTAS WILL
BUILD SOUTH-SOUTHEASTWARD ACROSS THE MIDDLE AND LOWER MISSOURI
VALLEY BY LATE THIS AFTERNOON. ALL IN ALL THESE TWO PRESSURE SYSTEMS
WILL CONTINUE TO SUPPORT THE GUSTY NORTHWESTERLY WINDS ACROSS THE
TERMINALS THROUGH THE DAY TODAY. SOME LAKE EFFECT SNOW IS LIKELY
ACROSS SOUTHERN LAKE MICHIGAN THROUGH THE DAY. HOWEVER...IT APPEARS
THAT THIS ACTIVITY WILL REMAIN TO THE EAST OF KGYY.
THEREFORE...THERE IS NO MENTION IN THE LATEST FORECAST.

THE WINDS WILL GRADUALLY BACK MORE SOUTHWESTERLY LATER THURSDAY
NIGHT AS THE AFOREMENTIONED SURFACE HIGH SHIFTS SOUTHWARD TOWARDS THE
GULF COAST STATES. THIS WILL SET THE STAGE FROM SOME STRONG
SOUTHWESTERLY WINDS AND BLOWING SNOW ON FRIDAY AS ANOTHER THROUGH OF
LOW PRESSURE MOVES ACROSS THE UPPER MIDWEST. THIS CURRENTLY BEYOND
THE CURRENT 30 HOUR TAF PERIOD FOR KORD...BUT WILL LIKELY BE ADDED
TO LATER FORECASTS.

KJB

//ORD AND MDW CONFIDENCE...UPDATED 06Z...

* HIGH CONFIDENCE IN WIND TRENDS.

* HIGH CONFIDENCE IN BLSN TONIGHT...THOUGH ONLY MEDIUM CONFIDENCE
  IN VISIBILITY DETAILS DUE TO BLSN.

KJB

//OUTLOOK FOR ORD/MDW FOR 12Z FRIDAY-12Z WEDNESDAY...UPDATED 00Z...

FRIDAY...VERY GUSTY SOUTHWEST AND WITH LIGHT SNOW DEVELOPING. IFR
LIKELY WITH BLOWING SNOW POSSIBLE.

SATURDAY...GUSTY NORTHWEST WINDS AND A CHANCE OF SNOW SHOWERS.
MVFR POSSIBLE.

SUNDAY...LIGHT SNOW LIKELY. MVFR/IFR POSSIBLE.

MONDAY AND TUESDAY...VFR.

RATZER

&&

.MARINE...
242 PM CST

NORTHWEST WINDS WILL INCREASE TONIGHT...UP TO GALE FORCE ON THE
SOUTH END OF THE LAKE...BEHIND THE PASSAGE OF A COLD FRONT. BY
TOMORROW AFTERNOON WINDS RELAX BELOW GALE FORCE AND VERY GRADUALLY
BACK SOUTHWEST THROUGH EARLY FRIDAY BETWEEN A DEEP LOW PRESSURE
SYSTEM NORTH OF THE LAKES AND A BROAD STRONG HIGH OVER THE GULF
COAST. BY FRIDAY MORNING...THE GRADIENT AGAIN INCREASES
CONSIDERABLY AND PERSISTS INTO FRIDAY EVENING...SUPPORTING HIGH
END GALES AND PROBABLY EVEN SOME STORM FORCE GUSTS DURING THE DAY
FRIDAY...ESPECIALLY ON THE NORTH END OF THE LAKE. BEHIND YET
ANOTHER FRONTAL PASSAGE FRIDAY NIGHT THE WINDS VEER AND LIKELY
BECOME NORTHWEST GALES DURING THE DAY SATURDAY.

LENNING

&&

.LOT WATCHES/WARNINGS/ADVISORIES...
IL...WINTER WEATHER ADVISORY...ILZ003-ILZ004-ILZ005-ILZ006-ILZ008-
     ILZ010-ILZ011-ILZ012-ILZ013-ILZ014-ILZ019-ILZ020-ILZ021-
     ILZ022-ILZ023-ILZ032-ILZ033-ILZ039 UNTIL 4 AM THURSDAY.

     WIND CHILL WARNING...ILZ003-ILZ004-ILZ005-ILZ008-ILZ010-ILZ011-
     ILZ012 UNTIL NOON THURSDAY.

     WIND CHILL ADVISORY...ILZ006-ILZ013-ILZ014-ILZ019-ILZ020-ILZ021-
     ILZ022-ILZ023-ILZ032-ILZ033-ILZ039 UNTIL NOON THURSDAY.

IN...WIND CHILL ADVISORY...INZ001-INZ002-INZ010-INZ011-INZ019 UNTIL
     NOON THURSDAY.

     WINTER WEATHER ADVISORY...INZ001-INZ002-INZ010-INZ011-INZ019
     UNTIL 4 AM THURSDAY.

LM...GALE WARNING...LMZ080-LMZ567-LMZ669-LMZ671-LMZ673-LMZ675-LMZ744-
     LMZ745-LMZ777-LMZ779-LMZ868-LMZ870-LMZ872-LMZ874-LMZ876-
     LMZ878 UNTIL 3 PM THURSDAY.

     SMALL CRAFT ADVISORY...NEARSHORE WINTHROP HARBOR TO GARY IN UNTIL 6 AM
     FRIDAY.

&&

VISIT US AT HTTP://WEATHER.GOV/CHICAGO (ALL LOWERCASE)

FOLLOW US ON FACEBOOK...TWITTER...AND YOUTUBE AT:
WWW.FACEBOOK.COM/US.NATIONALWEATHERSERVICE.CHICAGO.GOV
WWW.TWITTER.COM/NWSCHICAGO
WWW.YOUTUBE.COM/NWSCHICAGO

HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
455 PM CST WED JAN 22 2014

ILZ003>006-008-010>014-019>023-032-033-039-INZ001-002-010-011-019-
232300-
WINNEBAGO-BOONE-MCHENRY-LAKE ILLINOIS-OGLE-LEE-DE KALB-KANE-
DUPAGE-COOK-LA SALLE-KENDALL-GRUNDY-WILL-KANKAKEE-LIVINGSTON-
IROQUOIS-FORD-LAKE INDIANA-PORTER-NEWTON-JASPER-BENTON-
455 PM CST WED JAN 22 2014 /555 PM EST WED JAN 22 2014/

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH CENTRAL ILLINOIS...
NORTHEAST ILLINOIS AND NORTHWEST INDIANA.

.DAY ONE...TONIGHT.

NORTHWEST WINDS GUSTING TO 35 MPH WILL PRODUCE SIGNIFICANT
BLOWING AND DRIFTING SNOW...ESPECIALLY IN OPEN AREAS.

WIND CHILLS 20 BELOW TO 35 BELOW ZERO ARE POSSIBLE TONIGHT. THE
LOWEST WIND CHILLS SHOULD BE WEST OF THE FOX VALLEY AND NORTH OF
INTERSTATE 80.

LOCALIZED RIVER FLOODING WILL REMAIN POSSIBLE...ESPECIALLY NEAR
ANY ISOLATED ICE JAMS...PARTICULARLY ALONG THE KANKAKEE RIVER.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY.

WIND CHILLS 20 BELOW TO 30 BELOW ZERO ARE EXPECTED THROUGH
THURSDAY MORNING. WIND CHILLS TO 30 BELOW ZERO ARE POSSIBLE
AGAIN THURSDAY NIGHT INTO FRIDAY MORNING...SUNDAY NIGHT INTO
MONDAY MORNING AND MONDAY NIGHT INTO TUESDAY MORNING.

PERIODIC CHANCES FOR SNOW WILL CONTINUE THURSDAY THROUGH THE
UPCOMING WEEKEND. THE BEST CHANCE FOR ACCUMULATING SNOW WILL BE
SATURDAY NIGHT INTO SUNDAY MORNING.

GUSTY WINDS UP TO 50 MPH ARE POSSIBLE FRIDAY...AND MAY CREATE
CONSIDERABLE BLOWING AND DRIFTING SNOW.

LOCALIZED RIVER FLOODING WILL REMAIN POSSIBLE...ESPECIALLY NEAR
ISOLATED ICE JAMS...PARTICULARLY ALONG THE KANKAKEE RIVER.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NECESSARY THROUGH TONIGHT.

&&

LMZ740>745-232300-
WINTHROP HARBOR TO WILMETTE HARBOR-
WILMETTE HARBOR TO NORTHERLY ISLAND-
NORTHERLY ISLAND TO CALUMET HARBOR-CALUMET HARBOR TO GARY-
GARY TO BURNS HARBOR-BURNS HARBOR TO MICHIGAN CITY-
455 PM CST WED JAN 22 2014

THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE ILLINOIS NEARSHORE
WATERS OF LAKE MICHIGAN AND THE INDIANA NEARSHORE WATERS OF LAKE
MICHIGAN.

.DAY ONE...TONIGHT.

WINDS AND WAVES WILL BE HAZARDOUS TO SMALL CRAFT TONIGHT FOR THE
ILLINOIS NEARSHORE WATERS.

NORTHWEST GALES TO 40 KT ARE EXPECTED TONIGHT FOR THE INDIANA
NEARSHORE WATERS.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY.

WINDS AND WAVES WILL BE HAZARDOUS TO SMALL CRAFT THURSDAY AND
THURSDAY NIGHT FOR THE ILLINOIS NEARSHORE WATERS.

NORTHWEST GALES TO 35 KT WILL CONTINUE THROUGH THURSDAY AFTERNOON
FOR THE INDIANA NEARSHORE WATERS.

SOUTHWEST GALES TO 45 KT ARE EXPECTED FRIDAY INTO SATURDAY FOR
THE ENTIRE NEARSHORE WATERS.

WINDS AND WAVES HAZARDOUS TO SMALL CRAFT ARE LIKELY SATURDAY
AFTERNOON THROUGH MONDAY.

&&

LMZ080-261-362-364-366-563-565-567-669-671-673-675-777-779-868-
870-872-874-876-878-232300-
LAKE MICHIGAN FROM MICHIGAN CITY IN TO ST. JOSEPH MI 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM SEUL CHOIX POINT TO ROCK ISLAND PASSAGE 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN SOUTH OF A LINE FROM SEUL CHOIX POINT TO THE
MACKINAC BRIDGE AND NORTH OF A LINE FROM CHARLEVOIX MI TO SOUTH
FOX ISLAND 5 NM OFFSHORE-
LAKE MICHIGAN FROM CHARLEVOIX TO POINT BETSIE MI 5 NM OFFSHORE TO
MID LAKE-
LAKE MICHIGAN FROM POINT BETSIE TO MANISTEE MI 5 NM OFFSHORE TO
MID LAKE-
LAKE MICHIGAN FROM ROCK ISLAND PASSAGE TO STURGEON BAY WI-
LAKE MICHIGAN FROM STURGEON BAY TO TWO RIVERS WI 5 NM OFFSHORE TO
MID LAKE-
LAKE MICHIGAN FROM TWO RIVERS TO SHEBOYGAN WI 5 NM OFFSHORE TO
MID LAKE-
LAKE MICHIGAN FROM SHEBOYGAN TO PORT WASHINGTON WI 5 NM OFFSHORE
TO MID LAKE-
LAKE MICHIGAN FROM PORT WASHINGTON TO NORTH POINT LIGHT WI 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM NORTH POINT LIGHT TO WIND POINT WI 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM WIND POINT WI TO WINTHROP HARBOR IL 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM WINTHROP HARBOR TO WILMETTE HARBOR IL 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM WILMETTE HARBOR IL TO MICHIGAN CITY IN 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM PENTWATER TO MANISTEE MI 5 NM OFFSHORE TO MID
LAKE-
LAKE MICHIGAN FROM WHITEHALL TO PENTWATER MI 5 NM OFFSHORE TO MID
LAKE-
LAKE MICHIGAN FROM GRAND HAVEN TO WHITEHALL MI 5 NM OFFSHORE TO
MID LAKE-
LAKE MICHIGAN FROM HOLLAND TO GRAND HAVEN MI 5 NM OFFSHORE TO MID
LAKE-
LAKE MICHIGAN FROM SOUTH HAVEN TO HOLLAND MI 5 NM OFFSHORE TO MID
LAKE-
LAKE MICHIGAN FROM ST. JOSEPH TO SOUTH HAVEN MI 5 NM OFFSHORE TO
MID LAKE-
455 PM CST WED JAN 22 2014

THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE OPEN WATERS OF LAKE
MICHIGAN.

.DAY ONE...TONIGHT.

NORTHWEST GALES TO 35 KT ARE EXPECTED TONIGHT FOR THE SOUTHERN
HALF OF LAKE MICHIGAN. HEAVY FREEZING SPRAY IS POSSIBLE TONIGHT.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY.

GALES WILL CONTINUE THROUGH THURSDAY AFTERNOON...MAINLY FOR THE
SOUTHERN HALF OF LAKE MICHIGAN.

GALES MAY DEVELOP AGAIN THURSDAY NIGHT THROUGH SATURDAY FOR THE
ENTIRE LAKE. OCCASIONAL STORM FORCE GUSTS TO 50 KT ARE POSSIBLE
FRIDAY.

HEAVY FREEZING SPRAY IS POSSIBLE THROUGH SATURDAY.

&&

VISIT US AT HTTP://WEATHER.GOV/CHICAGO (ALL LOWERCASE)

FOLLOW US ON FACEBOOK...TWITTER...AND YOUTUBE AT:
WWW.FACEBOOK.COM/US.NATIONALWEATHERSERVICE.CHICAGO.GOV
WWW.TWITTER.COM/NWSCHICAGO
WWW.YOUTUBE.COM/NWSCHICAGO

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
616 PM CST WED JAN 22 2014

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0600 PM     SNOW             3 SW MIDWAY AIRPORT     41.75N 87.79W
01/22/2014  M0.6 INCH        COOK               IL   CO-OP OBSERVER

            0.6 INCHES IN THE PAST 6 HOURS.

0600 PM     SNOW             ROMEOVILLE              41.65N 88.09W
01/22/2014  M0.4 INCH        WILL               IL   OFFICIAL NWS OBS

            0.4 INCHES IN THE PAST 6 HOURS AT NWS OFFICE.

0615 PM     SNOW             PORTAGE                 41.59N 87.18W
01/22/2014  M1.0 INCH        PORTER             IN   TRAINED SPOTTER

            STORM TOTAL 1.0 INCH.

0600 PM     SNOW             OHARE AIRPORT           41.98N 87.90W
01/22/2014  M0.4 INCH        COOK               IL   OFFICIAL NWS OBS

            0.4 INCHES IN THE PAST 6 HOURS.

0600 PM     SNOW             ROCKFORD AIRPORT        42.20N 89.10W
01/22/2014  M0.2 INCH        WINNEBAGO          IL   OFFICIAL NWS OBS

            0.2 INCHES IN THE PAST 6 HOURS.

&&

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
719 PM CST WED JAN 22 2014

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0718 PM     SNOW             ELBURN                  41.89N 88.47W
01/22/2014  M0.6 INCH        KANE               IL   TRAINED SPOTTER

            STORM TOTAL 0.6 INCHES TODAY.

&&