Illinois, 2013

Cold in Illinois, February 25, 2013

February 25, 2013 · NWS LOT · 1 event in 1 county or zone

Temperatures around 20 contributed to the death of 56-year-old man.

The toll

Deaths
1
Injuries
0
Property damage
None recorded
Crop damage
None recorded
Events
1

Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.

What happened

The episode as NWS LOT wrote it up.

Temperatures around 20 contributed to the death of 56-year-old man.

What forecasters said that day

The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Chicago, IL wrote its last area forecast discussion before the first event at Feb 25, 5:38 AM CST, 4 hours 25 minutes earlier.

Area forecast discussion, Feb 25, 5:38 AM CST, 4 hours 25 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
538 AM CST MON FEB 25 2013

.DISCUSSION...
352 AM CST

MAIN FOCUS IS WITH LATE WINTER STORM SYSTEM THAT WILL MOVE INTO THE
AREA TUESDAY MORNING...AND THE RESULTING ISSUES OF PRECIP TYPE...
SNOW AMOUNTS AND HEADLINES. HAVE CHOSEN TO LET THE WINTER STORM
WATCH RIDE FOR NOW...WITH SOME POTENTIAL TO REACH WARNING (6+ INCH)
CRITERA SNOW ESPECIALLY IN WESTERN IL...THOUGH CONCERNS ABOUT WARM
THERMODYNAMIC PROFILES AND DECREASING STRENGHT OF OCCLUDING AND
WEAKENING SYSTEM REMAIN.

SHORT TERM...TODAY THROUGH WEDNESDAY...

NO REAL CONCERNS IN THE VERY NEAR TERM TODAY...WITH UPPER/SURFACE
HIGH PRESSURE RIDGING DRIFTING EAST OF THE AREA. INCREASING MID/HIGH
CLOUDS ARE EXPECTED THROUGH THE DAY IN ASSOCIATION WITH A SHORT WAVE
MOVING ACROSS THE UPPER MIDWEST...ESPECIALLY ACROSS THE NORTHWEST
PART OF THE CWA. RELATIVELY MILD LOWER TROPOSPHERIC AIR SHOULD
SUPPORT TEMPS WELL ABOVE FREEZING DURING THE DAY...WITH MOS HIGHS IN
THE UPPER 30S NORTH AND AROUND 40/LOW 40S IN THE SOUTHEAST WHERE
THERE IS LESS REMAINING SNOW COVER AND A LITTLE MORE SUN LIKELY.

ATTENTION THEN TURNS QUICKLY TO THE APPROACHING STORM SYSTEM OVER
THE SOUTHERN PLAINS. DEEPENING UPPER LOW CURRENTLY OVER THE TEXAS
PANHANDLE IS PROGGED TO MOVE EAST ACROSS THE RED RIVER VALLEY OF THE
SOUTH BY EVENING...AND TO NORTHEAST ARKANSAS BY TUESDAY MORNING.
GUIDANCE IS IN VERY GOOD AGREEMENT IN QUICKLY OCCLUDING THE SYSTEM
EARLY TUESDAY AS IT LIFTS NORTHEAST INOT THE LOWER OHIO VALLEY INTO
CENTRAL/SOUTHERN INDIANA BY TUESDAY EVENING. NORMALLY...THE TRACK OF
A STRONG SURFACE LOW FROM SOUTHEAST MISSOURI INTO CENTRAL INDIANA
WOULD INDICATE THE POTENTIAL FOR A SWATH OF HEAVY SNOW ACROSS
NORTHERN IL/NORTHWEST INDIANA...THOUGH THE LACK OF A REALLY COLD
AIRMASS ACROSS THE GREAT LAKES/ONTARIO AND THE FACT THAT THE
DEFORMATION BAND WILL WEAKEN CONSIDERABLY AS IT SPREADS NORTHEAST
INTO THE WFO LOT FORECAST AREA AS THE SYSTEM FILLS RAISE DOUBTS
ABOUT WIDESPREAD 6+ INCH SNOWFALL AMOUNTS.

AS PRECIPITATION SPREADS INTO THE AREA FROM THE SOUTH EARLY TUESDAY
MORNING...FORECAST SOUNDINGS DEPICT VERY DRY LOW LEVELS BELOW 700
MB. THIS SHOULD NOT BE AN ISSUE HOWEVER GIVEN THE VERY STRONG
MOISTURE ADVECTION AHEAD OF THE LOW...WITH PWATS IN THE 0.50-0.75
INCH RANGE DEPICTED BY THE GFS. THE ISSUE HOWEVER WILL BE THE WARM
NOSE OF +2 TO +4 DEG C NOTED IN GFS/ECMWF SOUNDINGS ACROSS OUR
SOUTH/SOUTHEAST COUNTIES WHICH WILL LIKELY RESULT IN A PERIOD OF
MIXED FREEZING RAIN/RAIN AND SLEET EARLY TUESDAY. EVEN AREAS NORTH
OF I-80 COULD SEE A LITTLE GRAUPLE AS PRECIP BEGINS AFTER SUNRISE
BEFORE CHANGING OVER TO WET SNOW. THERMAL PROFILES ROUGHLY
ALONG/NORTH OF A PONTIAC TO CHICAGO LINE APPEAR TO SUPPORT MAINLY
ALL SNOW ONCE THE COLUMN SATURATES...THOUGH AREAS EAST/SOUTH OF THAT
LINE WILL LIKELY SEE SOME MIX AND EVEN A CHANGE OVER TO JUST RAIN
ACROSS THE FAR SOUTHEAST. EVEN WHERE PRECIP IS ALL SNOW...THE BEST
DENDRITIC GROWTH LAYER LOOKS TO BE ABOVE 700 MB...WITH THE LOWER 10
KFT OF THE PROFILE GENERALLY WARMER THAN -8 C. WITH LOW LEVEL TEMPS
NEAR/EVEN SLIGHTLY ABOVE FREEZING THIS SUGGESTS COMPACTION ISSUES
AND A VERY WET/LOW RATIO SNOW...LIKELY LESS THAN 10:1 EXCEPT PERHAPS
IN THE FAR NORTHWEST WHERE QPF IS A LITTLE LOWER. ALL OF THIS MAKES
SNOW AMOUNT FORECASTS SOMEWHAT LOW CONFIDENCE. WITH 0.50-0.80 INCHES
OF LIQUID QPF FORECAST HOWEVER...EVEN WITH RELATIVELY LOW RATIOS
THIS COULD SUPPORT SEVERAL INCHES OF WET SNOW...AND SOME AREAS JUST
UPSTREAM OF THE LOT CWA WHERE FORCING IS STRONGER WILL LIKELY EASILY
RECEIVE 6+ INCHES. THEREFORE...WITH SOME DEGREE OF UNCERTAINTY HAVE
MAINTAINED THE WATCH FOR NOW...THOUGH SUSPECT A SOLID ADVISORY (3-6
INCH) SNOW IS MORE LIKELY. EAST-NORTHEAST WINDS GUSTING 35-40 MPH
WILL NOT HELP IMPACTS...WITH BLOWING/DRIFTING AND POOR VISIBILITY
LIKELY INTO TUESDAY EVENING.

UPPER/SURFACE LOWS CONTINUE TO DRIFT NORTHEAST FROM THE LOWER OHIO
VALLEY TO THE EASTERN GREAT LAKES TUESDAY NIGHT/WEDNESDAY...WITH CWA
REMAINING LINGERING MODEST LIFT IN COLDER/MOIST CYCLONIC REGION.
CONTINUED LIGHT SNOW/SNOW SHOWERS WILL LIKELY RESULT IN ADDITIONAL
MINOR SNOW ACCUMULATION OF 1-2" THROUGH WEDNESDAY.

RATZER

LONG TERM...WEDNESDAY NIGHT THROUGH SUNDAY

CLOSED UPPER LOW AND SURFACE REFLECTION WILL FINALLY SLIDE EAST AND
LOSE THEIR INFLUENCE OVER REGION. WILL CONTINUE TO CARRY A CHANCE OF
LIGHT SNOW WEDNESDAY NIGHT...HIGHEST EASTERN CWA...BEFORE SYSTEM
SLIDES FAR ENOUGH OFF TO EAST. CANNOT RULE OUT SOME VERY LIGHT
ADDITIONAL ACCUMULATIONS. TEMPERATURES WILL BE SLOW TO FALL
WEDNESDAY NIGHT AND THEN SLOW TO RISE ON THURSDAY DUE TO
OVERCAST SKIES. MAINTAINED SOME SLIGHT POPS FOR THE POTENTIAL OF
LINGERING SNOW SHOWERS FOR THURS/THURS NIGHT BUT THIS COULD BE
GENEROUS.

THERE IS THEN BROAD AGREEMENT AMONGST ENSEMBLES AND OPERATIONAL
MODELS FOR A VERY HIGH AMPLITUDE RIDGE TO SET UP SHOP LATE NEXT WEEK
OVER THE WESTERN CONUS AND A DEEP TROUGH OVER THE EASTERN
CONUS...WHICH IS A CLASSIC STRONGLY POSITIVE PNA PATTERN. THIS WILL
ALSO BE ACCOMPANIED BY A NEGATIVE NAO OR GREENLAND BLOCK.
BLOCKY UPPER PATTERN WILL RESULT IN A STAGNANT SENSIBLE WX PATTERN
FOR OUR AREA THROUGH THE WEEKEND...WITH PRIMARILY DRY AND COOLER
THAN NORMAL CONDITIONS TYPIFIED BY A POSITIVE PNA/NEGATIVE NAO
COMBO. MODELS...MOST NOTABLY THE GFS...INSIST ON LIGHT QPF IN
PERSISTENT NORTHERLY FLOW INDICATIVE OF LAKE EFFECT/LAKE ENHANCEMENT
FRIDAY THROUGH SATURDAY. HOWEVER 850 MB TEMPS ARE MARGINAL FOR LAKE
EFFECT AT AROUND -10C AND FORECAST SOUNDINGS SHOW LOW INVERSION
HEIGHTS AOB 5KFT...SO REMOVED SLIGHT POPS FROM BLENDED GUIDANCE AND
JUST WENT WITH A MENTION OF INTERMITTENT FLURRIES. WILL NEED TO
WATCH FOR IMPROVED THERMODYNAMIC SET-UP GIVEN FAVORABLE FLOW FOR
LAKE EFFECT INTO NORTHEAST IL AND NORTHWEST INDIANA.

BEYOND DAY 7...THERE IS SOME EVIDENCE ON ENSEMBLES FOR THE
DEVELOPMENT OF STRONG RIDGING OVER/NEAR ALASKA...WHICH COULD
RE-ESTABLISH CROSS POLAR FLOW OF COLD AIR INTO THE NORTHERN CONUS
AND PROLONG THE COLD PATTERN INTO THE SECOND WEEK OF MARCH WHILE THE
NORTH ATLANTIC BLOCKING PERSISTS. ALL IN ALL...THOUGH THERE DOESNT
APPEAR TO BE ANY SIGNIFICANT SYSTEMS IN THE OFFING...METEOROLOGICAL
SPRING LOOKS TO BE GETTING OFF TO A DECIDEDLY WINTRY START.

RC

&&

.AVIATION...

//ORD AND MDW CONCERNS...UPDATED 12Z...

* APPROACHING WINTER STORM TUESDAY...ACCUMULATING SNOWFALL AND
  QUICKLY DETERIORATING CIGS/VSBY.

BMD

//DISCUSSION...UPDATED 12Z...

SHOULD BE FAIRLY QUIET WEATHER TODAY AS HIGH PRESSURE OVER THE AREA
THIS MORNING SLOWLY DEPARTS TO OUR EAST WITH VFR CONDITIONS IN PLACE
THROUGH THE DAY. LOW PRESSURE OVER TEXAS/OKLAHOMA EARLY THIS MORNING
WILL LIFT NORTHEAST ACROSS THE SOUTHERN/CENTRAL PLAINS THROUGH THE
DAY. AS THIS HAPPENS...EXPECT SOUTHEASTERLY WINDS THIS MORNING TO
BEGIN TO BACK TO THE EAST-NORTHEAST AND INCREASE. GUSTY CONDITIONS
ARE EXPECTED TO BEGIN LATE THIS EVENING AND OVERNIGHT...THEN QUICKLY
RAMP UP TO NEAR 30 KT IN THE PREDAWN HOURS TUESDAY. PRECIPITATION
WILL BEGIN TO MOVE UP ACROSS CENTRAL ILLINOIS EARLY TUESDAY...THEN
INTO THE CHICAGO/ROCKFORD TERMINALS MID TO LATE MORNING. THERE IS AN
OFF CHANCE OF SLEET MIXED IN AT THE ONSET OF PRECIP FOR THE CHICAGO
TERMINALS...AND PERHAPS A SLEET/FREEZING RAIN MIX AT GYY...BUT
SHOULD QUICKLY TRANSITION TO AN ALL SNOW EVENT FOR THE TERMINALS.
EXCEPT FOR GYY...THE CHANCES FOR MIXED PRECIP THIS FAR NORTH ARE
LOW...AND WILL NOT MENTION IN THE ORD TAF. PRETTY STRONG FORCING AND
SHOULD QUICKLY OVERCOME A DRY LAYER IN PLACE...LEADING TO CIGS
DROPPING QUICKLY FROM VFR TO LOW END MVFR OR POSSIBLY IFR BY
18Z...WITH IFR CIGS LIKELY AT SOME POINT THEREAFTER. VSBY IS ALSO
EXPECTED TO QUICKLY FALL AS MODERATE TO HEAVY SNOW OVERSPREADS THE
TERMINALS. ACCUMULATIONS OF 4 TO 6 INCHES ARE POSSIBLE THROUGH
TUESDAY NIGHT.

BMD

//ORD AND MDW CONFIDENCE...UPDATED 12Z...

* HIGH CONFIDENCE IN ALL FORECAST ELEMENTS THROUGH LATE TONIGHT.
* MEDIUM CONFIDENCE IN TIMING SNOW AND MVFR CIGS INTO THE
  TERMINALS...LOW CONFIDENCE ON VSBY.

BMD

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

TUESDAY NIGHT THROUGH WEDNESDAY...SNOW LIKELY WITH LIGHT
ACCUMULATIONS POSSIBLE. IFR.
THURSDAY THROUGH SATURDAY...MVFR. PERIODIC LIGHT SNOW OR FLURRIES.
SUNDAY...VFR.

BMD

&&

.MARINE...
310 AM CST

LOW PRESSURE WILL DEEPEN OVER THE PLAINS TODAY AND LIFT NORTHEAST
REACHING THE MID MISSISSIPPI VALLEY BY LATE TONIGHT...THEN INTO
CENTRAL INDIANA BY LATE TUESDAY EVENING. THE GRADIENT WILL TIGHTEN
OVER LAKE MICHIGAN AS THIS OCCURS WITH WINDS INCREASING TO GALES
FROM SOUTH TO NORTH ACROSS THE LAKE STARTING EARLY TUESDAY MORNING
AND OVERSPREADING THE LAKE BY MID AFTERNOON. WINDS ARE EXPECTED TO
PEAK AROUND 40 KT ACROSS THE SOUTHERN HALF OF THE LAKE TUESDAY
AFTERNOON. THE LOW CONTINUES NORTHEAST INTO THE EASTERN GREAT LAKES
REGION WEDNESDAY WITH A MODERATE TO STRONG NORTHERLY GRADIENT
REMAINING OVER LAKE MICHIGAN. CURRENT EXPECTATIONS ARE FOR WINDS TO
HOVER BETWEEN 30-35 KT THROUGH AT LEAST THURSDAY. BY LATE
THURSDAY OR FRIDAY THE LOW BEGINS TO MOVE OFF THE EAST COAST AND
THE GRADIENT WEAKENS OVER LAKE MICHIGAN ALLOWING WINDS TO
GRADUALLY DIMINISH. BMD

&&

.LOT WATCHES/WARNINGS/ADVISORIES...
IL...WINTER STORM WATCH...ILZ003-ILZ004-ILZ005-ILZ006-ILZ008-ILZ010-
     ILZ011-ILZ012-ILZ013-ILZ014-ILZ019-ILZ020-ILZ021-ILZ022...6
     AM TUESDAY TO MIDNIGHT WEDNESDAY.

IN...NONE.
LM...GALE WATCH...LMZ080-LMZ669-LMZ671-LMZ673-LMZ675-LMZ777-LMZ779-
     LMZ870-LMZ872-LMZ874-LMZ876-LMZ878...6 AM TUESDAY TO
     MIDNIGHT FRIDAY.

     GALE WATCH...LMZ261-LMZ362-LMZ364-LMZ366-LMZ563-LMZ565-LMZ567-
     LMZ868...3 PM TUESDAY TO MIDNIGHT FRIDAY.

     GALE WATCH...LMZ740-LMZ741-LMZ742-LMZ743-LMZ744-LMZ745...6 AM
     TUESDAY TO 10 PM TUESDAY.

&&
Hazardous weather outlook, Feb 25, 10:01 AM CST, 2 minutes before
HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
1001 AM CST MON FEB 25 2013

ILZ003>006-008-010>014-019>023-032-033-039-INZ001-002-010-011-019-
261615-
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-
1001 AM CST MON FEB 25 2013 /1101 AM EST MON FEB 25 2013/

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

.DAY ONE...TODAY AND TONIGHT.

A WINTER STORM WILL APPROACH THE AREA LATE TONIGHT...AND WILL
BRING THE POTENTIAL FOR A MIX OF LIGHT FREEZING RAIN...SLEET AND
SNOW TO AREAS MAINLY SOUTH OF THE ILLINOIS AND KANKAKEE RIVER
VALLEYS TOWARD TUESDAY MORNING.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY.

A WINTER STORM WILL MOVE ACROSS THE MIDWEST TUESDAY AND TUESDAY
EVENING AND WILL BRING WET SNOW...ALONG WITH THE POTENTIAL FOR
SOME FREEZING RAIN AND SLEET. THE BEST CHANCE OF ANY ICE
ACCUMULATION LOOKS TO BE SOUTH OF THE KANKAKEE RIVER WITH THE MOST
SIGNIFICANT SNOW ACCUMULATIONS GENERALLY NORTHWEST OF A PEORIA TO
CHICAGO LINE. WINDS MAY ALSO GUST TO 40 MPH TUESDAY...ESPECIALLY
CLOSE TO LAKE MICHIGAN. THIS MAY RESULT IN SIGNIFICANT BLOWING
AND DRIFTING SNOW ESPECIALLY ACROSS NORTHERN ILLINOIS INTO TUESDAY
EVENING. LIGHTER SNOW WITH SOME ADDITIONAL MINOR ACCUMULATION IS
POSSIBLE ACROSS THE AREA INTO WEDNESDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NECESSARY THROUGH TONIGHT.

&&

COMPLETE FORECAST INFORMATION IS AVAILABLE ON THE NWS CHICAGO
WEBPAGE: WEATHER.GOV/CHICAGO

LMZ740>745-261615-
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-
1001 AM CST MON FEB 25 2013

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

.DAY ONE...TODAY AND TONIGHT.

INCREASING WINDS AND BUILDING WAVES WILL CREATE HAZARDOUS
CONDITIONS FOR SMALL CRAFT LATE TONIGHT.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY.

GALE FORCE WINDS WILL OCCUR TUESDAY AND POSSIBLY AGAIN ON
WEDNESDAY AND THURSDAY AT TIMES...WITH HAZARDOUS WAVES LIKELY TO
LINGER THROUGH SATURDAY.

&&

COMPLETE FORECAST INFORMATION IS AVAILABLE ON THE NWS CHICAGO
WEBPAGE: WEATHER.GOV/CHICAGO

LMZ080-261-362-364-366-563-565-567-669-671-673-675-777-779-868-
870-872-874-876-878-261615-
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-
1001 AM CST MON FEB 25 2013

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

.DAY ONE...TODAY AND TONIGHT.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY.

GALE FORCE WINDS WILL OCCUR TUESDAY INTO WEDNESDAY AND BE POSSIBLE
ON THURSDAY.

&&

COMPLETE FORECAST INFORMATION IS AVAILABLE ON THE NWS CHICAGO
WEBPAGE: WEATHER.GOV/CHICAGO

IZZI/MTF

Event by event

1 cold/wind chill. Local standard time, as filed.

Cold/Wind Chill, Cook

When
February 25, 10:03 AM CST
Where
Cook forecast zone
Deaths
1 direct, 0 indirect
Reported by
Newspaper

Hypothermia was a contributing factor in the death of a 56-year-old man found outside in the 10000 block of South Wentworth Avenue.

The people who died

As the offices recorded each death: direct deaths were caused by the weather itself, indirect ones by something it set in motion.

EventDateAgeSexWhereKind
Cold/Wind Chill, Cook2013-02-2556MaleOutside/Open AreasDirect

What these are

Cold/Wind Chill
Cold or wind chill below warning criteria that caused deaths, injuries or damage.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

More

Every storm in Illinois in 2013Every state in 2013This day in weather historyWarnings in Illinois, February 2013

Sources

NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 435579.