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AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
1235 PM CST SUN FEB 3 2013

DISCUSSION...
1230 PM CST

WENT AHEAD AND ISSUED A WINTER WEATHER ADVISORY FOR THE
NORTHEASTERN PART OF THE CWA FROM ROUGHLY ROCKFORD TO CHICAGO TO
VALPARAISO FOR THE APPROACHING CLIPPER TYPE SYSTEM TONIGHT AND
MONDAY. ANALYSIS OF LATEST OBS AND 12Z FORECAST GUIDANCE SUPPORT
SNOW DEVELOPING FROM LATE THIS EVENING INTO EARLY TONIGHT FROM
NORTHWEST TO SOUTHEAST. DEEP LAYER MOISTURE INCREASES FROM THE
SOUTH AS THE LOW/MID LEVEL FLOW TURNS BRIEFLY SOUTHERLY TONIGHT
AND PRECIPITABLE WATER VALUES INCREASE TO NEARLY 0.4 INCHES OR
MORE THAN TWICE THEIR CURRENT VALUES. A WELL ORGANIZED AREA OF
FRONTOGENETICAL FORCING DEVELOPS IN THE MID LEVEL OVERNIGHT
THROUGH MID MORNING MONDAY WITH FORECAST TIME- HEIGHT SECTIONS
INDICATING NEGATIVE EPV DEVELOPING ABOVE THIS LAYER OF FOCUSED
FORCING ALLOWING ENHANCEMENT OF VERTICAL MOTION/CONVECTIVE
PROCESSES. IN ADDITION...THIS FORCING LOOKS TO BE WELL ALIGNED
WITHIN THE FAVORED SNOW GROWTH ZONE FOR ABOUT A 3-5 HOUR PERIOD
OVERNIGHT THROUGH MID MORNING DEPENDING ON LOCATION WITH WESTERN
AREAS SEEING THIS EARLIER AND EASTERN AREAS LATER. BETWEEN THE
FORCING...FAVORABLE MICROPHYSICAL PROCESSES AND THE INFLUX IN
AVAILABLE MOISTURE FOR THESE TO ACT ON...A PERIOD OF MODERATE TO
PERHAPS EVEN BRIEFLY HEAVY SNOWFALL WITH GOOD FLAKE SIZE AND
EFFICIENT ACCUMULATION IS APPEARING MORE LIKELY. AMOUNTS OF 2 TO 5
INCHES ARE EXPECTED ACROSS THE ADVISORY AREA WITH THE HIGHER END
OF THE RANGE FAVORED ALONG/NORTH OF A ROCKFORD TO CHICAGO TO
VALPARAISO LINE...WITH AMOUNTS TAPERING OFF JUST TO THE SOUTH. IN
OTHER WORDS IS IS IMPORTANT TO KEEP IN MIND THAT SOUTHERN AREAS OF
KANE...DUPAGE...COOK...LAKE INDIANA...AND PORTER INDIANA MAY SEE
2-3 INCHES OF SNOW BUT IT MAY ALSO FALL OVER A SHORT PERIOD OF
TIME.

IN ADDITION...WITH THE LOW PRESSURE CENTER OF THIS SYSTEM
PASSING TO THE SOUTHWEST OF THE AREA...WINDS WILL TURN EAST THEN
NORTHEAST AND THEN NORTH ACROSS SOUTHERN LAKE MICHIGAN FROM MID
TO LATE MORNING LAKE ENHANCEMENT/LAKE EFFECT IS A GOOD
POSSIBILITY...ESPECIALLY AS THE FETCH INCREASES AS WINDS TURN MORE
NORTHEAST. THIS SETS UP THE POTENTIAL FOR AN ADDITIONAL PERIOD OF
ENHANCED SNOWFALL ACROSS COOK COUNTY DURING THE LATE MORNING. NOT
EXACTLY CLEAR HOW THIS WILL EVOLVE IN TERMS OF MAGNITUDE AND
ADDITIONAL ACCUMS...BUT IF IT IS WELL ORGANIZED THEN A QUICK
ADDITIONAL INCH OR TWO IS POSSIBLE...WHICH COULD RESULT IN LOCAL
AMOUNTS NEAR 6 INCHES. ANY ENHANCED BAND DOES LOOK TO STEADILY
PIVOT SOUTHWARD SO IT WOULD BE SHORT LIVED...BUT AGAIN COULD BE
QUITE INTENSE. WILL NEED TO KEEP AN EYE ON THIS. FOR NW
INDIANA...LAKE EFFECT/ENHANCEMENT PROCESSES WILL BE BETTER FOCUSED
DURING THE AFTERNOON AS WINDS TURN NORTH. HAVE KEPT THE HEADLINE A
WINTER WEATHER ADVISORY VS. A LAKE EFFECT SNOW ADVISORY BECAUSE
MUCH OF THE ACCUMULATION WILL BE FROM THE SYNOPTIC SYSTEM WITH
LAKE PROCESSES GETTING UNDERWAY FOR A SHORT WINDOW OF TIME BEFORE
WINDING DOWN. WILL NEED TO MONITOR EVOLUTION OF LAKE EFFECT MONDAY
EVENING AS THERE IS SOME EVIDENCE OF A CONVERGENCE SINGLE BAND
DEVELOPING AND SHIFTING EAST.

MDB

&&

PREV DISCUSSION...
929 AM CST

THE FORECAST WAS UPDATED EARLIER THIS MORNING AND CONTINUES TO BE
REFINED FOR SNOW THROUGH LATE MORNING/EARLY AFTERNOON.

THE WAVE TRAIN OF CLIPPERS ON LITERALLY A 24 PERIODICITY THIS
WEEKEND CONTINUES WITH THE MIDDLE ONE DEPARTING THE EASTERN AREA
THIS MID-MORNING. SNOW HOWEVER CONTINUES FOR MULTIPLE REASONS IT
APPEARS. FOR ONE...AN IMPRESSIVE 110 KT 500MB NORTHWESTERLY JET AS
SEEN ON THE KINL RAOB AND THE RAP ANALYSIS IS PUNCHING INTO THE
AREA AT A FAVORABLE ORIENTATION FOR ASCENT. THIS IS SHIFTING EAST
QUICKLY THOUGH. SO THE PRIMARY DRIVING FACTORS EVEN MORE SO ARE
COLD AIR ADVECTION ATOP STEEP LOW LEVEL RATES AND A DEEP DENDRITIC
GROWTH LAYER FROM THE SURFACE UPWARD. THIS PATTERN FOR MORE SNOW
SHOWERS HAS BEEN EVIDENT ON RADAR AND OBSERVATIONAL TRENDS...WITH
VISIBILITY AT TIMES DROPPING TO AROUND 1SM AND AT TIMES BOUNCING UP
TO 6SM. HIGHER REFLECTIVITY /WITH CURRENT 88D CALIBRATION ISSUES
ASIDE/ HAVE CORRELATED WITH MUCH LARGER SNOWFLAKE SIZE HERE AT THE
OFFICE...AND AMDAR DATA DEPICTS AN IMPRESSIVE SATURATED 7000 FT
ZONE IN THAT THERMAL LAYER FROM THE SURFACE UPWARD. THIS TYPE OF
SNOW WITH SOMEWHAT LIGHT SURFACE WINDS HAS ALLOWED FOR QUICK
ACCUMULATIONS WITH LIKELY A HANDFUL OF PLACES TO REPORT IN EXCESS
OF AN INCH AND MAYBE EVEN CLOSE TO TWO INCHES IN SOME SOUTH METRO
LOCATIONS.

ANALYZED COLD AIR ADVECTION LINES UP WELL WITH THE BACK OF THE
CLOUD EDGE ON SATELLITE WHICH IS RACING SOUTHEAST. HAVE TIMED
THAT ALONG WITH LOW-LEVEL CONVERGENCE ON THE RAP FOR THE BACK EDGE
OF THE POPS THROUGH AFTERNOON. ACCOUNTED FOR A POSSIBLE SLIGHT
SLOW DOWN JUST WITH REDEVELOPING STRATOCU CLOUDS IN SUCH A CAA
PATTERN DURING THE AFTERNOON. ADDITIONAL ACCUMULATION BEYOND 10 AM
WOULD LIKELY BE UNDER AN INCH BUT THAT IS ON TOP OF WHAT HAS OF
COURSE ALREADY FALLEN. NORTHWEST WINDS WILL INCREASE BEHIND THE
ASSOCIATED SURFACE TROUGH WHICH WILL LIKELY LEAD TO SOME BLOWING
SNOW IN OPEN AREAS GIVEN THE LIGHT FLUFFY NATURE OF WHAT HAS
FALLEN. TEMPERATURES LOOK ON TRACK AT THIS TIME.

MTF

//PREV DISCUSSION...
350 AM CST

MAIN CONCERN FOR THE NEXT FEW DAYS WILL BE THE CONTINUED PERIODIC
CHANCES FOR SNOW.

WITH THE LONGWAVE PATTERN OVER THE CONUS REMAINING NEARLY
STATIONARY.  FAST NWLY FLOW ALOFT WILL KEEP THE SERIES OF UPPER
LEVEL DISTURBANCES TRAINING ACROSS THE REGION.  THE LATEST IN THIS
SERIES...A WEAK SHORTWAVE MOVING THROUGH THE LOWER GREAT LAKES EARLY
THIS MORNING CONTINUES TO GENERATE SOME SCATTERED LIGHT SNOW...BUT
NO ACCUMULATION OF CONSEQUENCE IS EXPECTED.  SOME LINGERING FLURRIES
ARE LIKELY ACROSS THE REGION THROUGH THE LATE MORNING HOURS.
TEMPERATURES BOTTOMED OUT BEFORE MIDNIGHT WHEN SKIES WERE STILL
MOSTLY CLEAR...BUT THE INCREASING CLOUD COVER THAT BROUGHT THE LIGHT
SNOW OVERNIGHT PUT THE BRAKES ON ANY FURTHER COOLING AND TEMPS HAVE
BEEN SLOWLY RISING OVER THE PAST FEW HOURS.  THE REMAINDER OF SUNDAY
SHOULD BE RELATIVELY QUIET...WITH BREEZY WEST WINDS AND TEMPERATURES
TOPPING OUT IN THE UPPER TEENS TO LOWER 20S.

BY THIS EVENING...THE FOCUS WILL BE...ONCE AGAIN...ON ANOTHER
CLIPPER DROPPING OUT OF THE NORTHERN PLAINS AND TAKING AIM AT
NORTHERN ILLINOIS AND NORTHWESTERN INDIANA.  THE MODEL GUIDANCE IS
IN RELATIVELY GOOD AGREEMENT THAT THIS SYSTEM WILL BE STRONGER THAN
THE ON CURRENTLY MOVING THROUGH THE AREA...AND THAT IT WILL BRING
MORE SIGNIFICANT ACCUMULATING SNOW.  THE WAY THAT THE SFC PATTERN IS
SHAPING UP...THIS SYSTEM WILL HAVE A BETTER OPPORTUNITY TO TAP SOME
MORE MOISTURE THAN PREVIOUS SYSTEMS AS THE SFC HIGH CURRENTLY OVER
THE SRN PLAINS SHIFTS EWD TO THE ERN GULF COAST AND LOW PRESSURE
DEVELOPS OVER THE CENTRAL PLAINS.  THIS WILL OPEN UP THE GULF...WITH
LOW LEVEL TRAJECTORIES POINTING INTO ILLINOIS LATER TODAY AND
TONIGHT.  HOWEVER...THE POTENTIAL FOR INCREASING MOISTURE TRANSPORT
WILL NOT REALLY SET UP IN EARNEST UNTIL LATE THIS EVENING AS THE
SYSTEM IS CROSSING THE UPPER MISSISSIPPI VALLEY.  SO...THIS SHOULD
HELP LEAD TO SLIGHTLY HIGHER SNOWFALL AMOUNTS THAN HAVE BEEN SEEN
RECENTLY.  ALSO...WITH COLD AIR STILL IN PLACE...THE POTENTIAL FOR
LIQUID TO SNOW RATIOS SHOULD BE HIGHER THAN CLIMATOLOGICAL NORMAL
LEVELS...ALLOWING FOR ANOTHER LIGHT...FLUFFY SNOW.  THE MAIN CONCERN
WILL BE THE EXACT TRACK OF THE SHORTWAVE...AS THIS WILL BE THE MAIN
FOCUSING MECHANISM FOR THE PCPN.  FORTUNATELY...THE MODEL GUIDANCE
IS RATHER CONSISTENT ON THE PATH AND TIMING OF THE SYSTEM...SO
CONFIDENCE IS RATHER HIGH ON THE AXIS OF HEAVIER SNOW AS LAID OUT IN
THE FORECAST GRIDS THIS MORNING.  CURRENTLY...ANTICIPATE THE AXIS OF
HEAVIEST SNOW TO EXTEND FROM SWRN WISCONSIN...THROUGH FAR NERN
IL...TO NWRN INDIANA/SWRN LOWER MICHIGAN. LOCATIONS NORTH OF A LINE
FROM ROCKFORD TO VALPARAISO COULD SEE 2 TO 4 INCHES. THERE SHOULD BE
A SHARP CUTOFF TO THE SNOWFALL TO THE SOUTH OF THIS LINE AS IS
TYPICAL OF CLIPPER-TYPE SYSTEMS.  THE SOUTHERN PORTIONS OF THE
CWA...SOUTH OF A LINE FROM PERU TO KANKAKEE TO RENSSELAER WILL
LIKELY SEE LITTLE OR NO SNOW.  OF COURSE...THE AXIS OF HEAVIEST SNOW
WILL BE HIGHLY DEPENDENT ON THE EXACT TRACK OF THE ASSOCIATED VORT
MAX...SO ANY DEVIATIONS NORTH OF SOUTH OF THE ANTICIPATED TRACK
COULD HAVE SIGNIFICANT IMPACT ON SNOWFALL AMOUNTS.  SO...WILL HOLD
OFF ON ISSUING ANY TYPE OF WINTER WEATHER HEADLINE PRODUCT AS
ANTICIPATED SNOW TOTALS ARE MARGINAL FOR AN ADVISORY AND IF THE
SYSTEM TAKES A SLIGHTLY MORE NORTHERLY TRACK...EVEN THE FAR NORTHERN
PORTIONS OF THE CWA MAY NOT SEE ADVISORY CRITERIA SNOW.

HOWEVER...THIS DOES NOT DIMINISH THE IMPACT ON THE AREA AS SOME SNOW
SHOULD LINGER INTO THE MONDAY MORNING RUSH HOURS FOR THE ROCKFORD
AND CHICAGO METRO AREAS...AS WELL  AS LOCATIONS IN BETWEEN.  AN
ASSOCIATED SFC LOW SHOULD TRACK THROUGH CNTRL IL TO SRN INDIANA ON
MONDAY...WITH SOME WRAP-AROUND SNOW LINGERING INTO THE LATE
MORNING.  THEN AS WINDS TURN MORE NELY TO NLY INTO THE
AFTERNOON...LAKE EFFECT SNOW SHOWERS WILL BECOME AN INCREASING
POSSIBILITY.  THE PERIOD OF NELY LOW LEVEL WINDS WILL BE FAIRLY
BRIEF...BRINGING THE CHANCE FOR SOME LINGERING LAKE EFFECT SNOW
SHOWERS TO THE CHICAGO METRO AREA INTO MONDAY AFTERNOON...ADDING THE
POTENTIAL FOR ANOTHER COUPLE TENTHS OF AN INCH OF ACCUMULATION...
BEFORE SHIFTING THE LAKE EFFECT POTENTIAL TO NWRN INDIANA.  LAKE
EFFECT POTENTIAL FOR NWRN INDIANA SHOULD BE SIMILARLY BRIEF AS HIGH
PRESSURE BUILDS ACROSS THE MIDDLE MISSISSIPPI VALLEY TO THE LOWER
OHIO VALLEY.  THE NLY WINDS WILL RELATIVELY QUICKLY GIVE WAY SWLY
WINDS BY EARLY TUESDAY MORNING.

AS HAS BEEN REPEATEDLY MENTIONED IN RECENT FORECAST DISCUSSIONS...
THE UPPER LEVEL PATTERN WILL SEE LITTLE PROGRESSION INTO EARLY NEXT
WEEK AND YET ANOTHER CLIPPER IS EXPECTED TO DROP THROUGH THE NWLY
FLOW ALOFT.  THE MODELS REMAIN CONSISTENT ON THIS SYSTEM TAKING A
MORE NORTHERLY TRACK THROUGH WISCONSIN.  SO...WHILE IT IS
ANTICIPATED THAT THE NRN IL/NWRN IN SHOULD SEE SOME ADDITIONAL
ACCUMULATING SNOW ON TUESDAY...THE HEAVIEST AMOUNTS SHOULD BE NORTH
OF THE WISCONSIN BORDER...WITH PERHAPS...AN INCH OR TWO OVER THE FAR
NRN PORTIONS OF THE CWA.

FOR THE LONGER TERM FORECAST PERIOD...THE UPPER LEVEL PATTERN IS
FINALLY EXPECTED TO BECOME MORE PROGRESSIVE.  AS THE UPPER RIDGE
SHIFTS FROM THE WEST COAST TO ACROSS THE ROCKIES AND OUT OVER THE
PLAINS...TEMPERATURES WILL BEGIN AN INCREASING TREND...THROUGH THERE
WILL STILL BE PERIODIC CHANCES FOR PCPN FROM WEDNESDAY THROUGH
SATURDAY...BUT THIS WILL BE DUE TO PACIFIC SYSTEMS...RATHER THAN
ARCTIC-SOURCED SYSTEMS.  SO...WITH THE INCREASING TEMPERATURES...
THERE WILL ALSO BE CHANCES FOR RAIN.  ALSO...THE INCREASING
TEMPERATURES WILL INCREASE THE POTENTIAL FOR ICE-BREAKUP JAMS ON
AREA RIVERS AND STREAMS AS THE RECENT COLD WEATHER HAS ALLOWED THE
RIVERS AND STREAMS TO FREEZE OVER.

KREIN

&&

AVIATION...

//ORD AND MDW CONCERNS...UPDATED 18Z...

* SNOW DEVELOPING BY MID TO LATE EVENING...AND POTENTIALLY
  BECOMING HEAVY AT TIMES OVERNIGHT.

* LIMITED VSBYS IN SNOW DOWN UNDER 1 MILE AND LOWERING CIGS
  OVERNIGHT AND ON MONDAY.

* POTENTIAL FOR LAKE EFFECT/ENHANCED SNOW SHOWERS LINGERING
  THROUGH AT LEAST MONDAY MORNING AND POSSIBLY INTO THE EARLY
  AFTERNOON.

* WIND DIRECTION CHANGES TONIGHT INTO MONDAY.

KJB

//DISCUSSION...UPDATED 18Z...

THE LIGHT SNOW HAS FINALLY ABATED ACROSS THE TERMINALS EARLY THE
AFTERNOON AND SATELLITE IMAGERY ACTUALLY SHOWS CLEARING SKIES ACROSS
WESTERN SECTIONS OF ILLINOIS. THIS CLEARING LOOKS TO OVERSPREAD THE
EASTERN TAF SITES BY MID AFTERNOON. WEST TO NORTHWESTERLY WINDS WILL
INCREASE IN MAGNITUDE OVER THE NEXT HOUR OR TWO...WITH GUSTS INTO THE
LOWER 20 KT RANGE FOR A FEW HOURS.

THE BIG CONCERN DURING THE PERIOD WILL BE WITH THE NEXT CLIPPER
SYSTEM EXPECTED TO DROP SOUTHEASTWARD FROM THE DAKOTAS AND ACROSS
NORTHERN THE MID MISSISSIPPI VALLEY TONIGHT INTO MONDAY. THIS
CLIPPER SYSTEM APPEARS THAT IT WILL BE STRONGER THAN THE LAST
FEW...AND ALSO HAVE MORE MOISTURE AVAILABLE. STRONG DYNAMICS SHOULD
RESULT IN THE RAPID DEVELOPMENT OF SNOW ACROSS NORTHERN ILLINOIS
DURING THE MID TO LATE EVENING HOURS. THERE ARE INDICATIONS THAT A
BAND OF HEAVY SNOW COULD EVEN DEVELOP OVERNIGHT TONIGHT FROM
ROCKFORD EAST SOUTHEASTWARD ACROSS THE EASTERN TERMINALS. THIS COULD
RESULT IN VERY LOW VISIBILITIES UNDER A MILE...AND POTENTIALLY DOWN
TO A QUARTER MILE AT TIMES OVERNIGHT. I HIT THE 18 UTC TAFS HARDER
AND LOWER VIS DOWN TO 3/4 OVERNIGHT. I ALSO MOVED UP THE START TIME
BY ABOUT AN HOUR. IT APPEARS THERE WILL BE A RAPID ONSET TO THE
SNOW...AND IT COULD EVEN BEGIN A LITTLE EARLIER THAN CURRENTLY
FORECAST.

ONCE THIS SYSTEM MOVES EAST OF THE AREA IT APPEARS THAT THE FLOW
WILL TURN OFF THE LAKE...WHICH WOULD LIKELY RESULT IN LAKE
ENHANCED/EFFECT SNOW SHOWERS ACROSS NORTHEASTERN ILLINOIS THROUGH
THE MORNING...AND POTENTIALLY INTO THE AFTERNOON AS WELL. UNCERTAINTY
WITH THE LAKE EFFECT SETUP STILL EXISTS...BUT THE POTENTIAL IS IN
PLACE TO CONTINUE TO SEE LOW VISIBILITIES IN SHSN. IT APPEARS THE
SNOW WILL ABATE ACROSS NORTHEASTERN ILLINOIS BY LATE MONDAY
AFTERNOON AS THE FLOW BECOMES NORTHERLY. HOWEVER...KGYY MAY CONTINUE
TO SEE SOME SHSN INTO EARLY MONDAY EVENING.

KJB

//ORD AND MDW CONFIDENCE...UPDATED 18Z...

* HIGH CONFIDENCE IN SNOW TONIGHT WITH PERIODS OF VIS UNDER 1 MILE
  AND POTENTIALLY DOWN TO 1/4SM IN +SN FOR A PERIOD.

* MEDIUM CONFIDENCE IN SNOW SHOWERS CONTINUING ON MONDAY.

* MEDIUM/HIGH CONFIDENCE IN TIMING OF SNOW AFT 04Z MON.

* MEDIUM/HIGH CONFIDENCE IN WIND FORECAST.

KJB

//OUTLOOK FOR ORD/MDW FOR 00Z TUESDAY-12Z SUNDAY...UPDATED 12Z...

MONDAY NIGHT...MVFR CIGS TRENDING VFR.

TUESDAY...MVFR WITH LIGHT SNOW.

WEDNESDAY...VFR.

THURSDAY...PSBL MVFR WITH LIGHT RAIN/SNOW.

FRIDAY THROUGH SATURDAY...VFR.

BEACHLER

&&

MARINE...
310 AM CST

WEAK RIDGE OF HIGH PRESSURE OVERHEAD HAS ALLOWED WINDS TO DIMINISH
CONSIDERABLY EARLY THIS MORNING...HOWEVER THIS RIDGE WAS STEADILY
SLIDING EAST AS A WEAKENING TROUGH OF LOW PRESSURE WAS PUSHING
EAST INTO NORTHERN ILLINOIS. AS THIS TROUGH APPROACHES THE
AREA...THE GRADIENT WILL QUICKLY TIGHTEN. THIS WILL ALLOW WEST
WINDS TO INCREASE TO 20 TO 25 KT BY MIDDAY THEN CONTINUE TO
INCREASE TO 30 KT AS THEY TURN NORTHWEST. A FEW GALE FORCE GUSTS
MAY OCCUR...HOWEVER FEEL THE FREQUENCY OF GALES WILL BE VERY LOW.

IN THE NEARSHORE WINDS SHOULD TOUCH SMALL CRAFT CRITERIA...HOWEVER
IT APPEARS TO BE BORDERLINE. WILL CONTINUE TO HAVE THE SMALL CRAFT
ADVISORY GOING. ICE COVERAGE IN THE NEARSHORE WATERS HAS INCREASED
OVER THE PAST FEW DAYS...SO THE GREATEST CONCERN FOR SMALL CRAFT
WOULD BE WINDS RATHER THAN THE WAVES. WITH THE PROLONGED NORTHWEST
FETCH TO THE WINDS...SMALL CRAFT CONDITIONS WILL CONTINUE A LITTLE
LONGER FOR THE INDIANA NEARSHORE WATERS.

A STRONGER LOW APPROACHES FROM THE NORTHWEST TUESDAY AND STEADILY
WEAKENS AS IT SLIDES ACROSS THE LAKE. SOUTHWEST WINDS INCREASE TO 20
KT TUESDAY MORNING...THEN BECOMING NORTHWEST TUESDAY NIGHT.

BEACHLER

&&

LOT WATCHES/WARNINGS/ADVISORIES...
IL...WINTER WEATHER ADVISORY...ILZ003-ILZ004-ILZ005-ILZ006-ILZ012-
     ILZ013-ILZ014...10 PM SUNDAY TO NOON MONDAY.

IN...WINTER WEATHER ADVISORY...INZ001-INZ002...MIDNIGHT MONDAY TO 6
     PM MONDAY.

LM...SMALL CRAFT ADVISORY...NEARSHORE WINTHROP HARBOR TO GARY IN UNTIL 6 PM
     SUNDAY.

     SMALL CRAFT ADVISORY...NEARSHORE GARY TO MICHIGAN CITY IN UNTIL 4 AM MONDAY