Tornado and Damaging Winds in Illinois, June 24, 2013

Name: Tornado and Damaging Winds in Illinois, June 24, 2013
Start: 2013-06-24T15:29
End: 2013-06-24T17:46
Location: Illinois

June 24, 2013 · NWS LOT · 46 events in 11 counties and zones

During the late afternoon and evening of June 24th, a bow echo raced across northern Illinois causing widespread wind damage and spawning at least one tornado.

Where it happened

Every event with a place to put it. Tap one for its entry below.

Tornadoes
Tropical storms and surge
Floods
Wind
Hail
Winter weather
Heat and drought
Cold
Fire, smoke and dust
Marine and coastal
Other

Open the live radar over this ground

The toll

Deaths: 0
Injuries: 0
Property damage: $1.3 million
Crop damage: None recorded
Events: 46

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.

During the late afternoon and evening of June 24th, a bow echo raced across northern Illinois causing widespread wind damage and spawning at least one tornado.

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 Jun 24, 3:12 PM CST, 17 minutes earlier.

Area forecast discussion, Jun 24, 3:12 PM CST, 17 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
412 PM CDT MON JUN 24 2013

.MESOSCALE DISCUSSION...
401 PM CDT

THE AIR MASS OVER NORTHERN ILLINOIS IN THE PROCESS OF RAPIDLY
DESTABILIZING WITH OBJECTIVE ANALYSIS INDICATING MLCAPES LIKELY
INCREASING ABOVE 2000 J/KG. SYNOPTICALLY...DEEP LAYER SHEAR IS NOT
TERRIBLY IMPRESSIVE...HOWEVER WELL DEVELOPED MCV WITH 50-60KT FLOW
NOTED ON KDSM WSR-88D VWP SO IT IS BYOS (BRING YOUR OWN SHEAR)
WITH THIS MCS. WHILE DAMAGING WINDS...POSSIBLY FAIRLY
WIDESPREAD...WILL BE THE PRIMARY THREAT...THERE HAVE BEEN SEVERAL
STRONG MESOVORTICES WITH THIS BOW WITH AT LEAST ONE APPARENT TDS
DETECTED WITH KDVN DUAL POL IMAGERY. VISIBLE SATELLITE IMAGERY
SHOWS AND SFC OBS SHOW A WELL DEVELOPED RETREATING REMANENT
OUTFLOW BOUNDARY LIFTING NORTH ACROSS THE CWA EXTENDING FROM NEAR
KRZL TO NEAR KSQI AT 21Z. WHILE MV'S AND QLCS TYPE TORNADOES ARE
POSSIBLE NEAR AND NORTH OF THE APEX OF THE BOW...THIS BOUNDARY MAY
VERY WELL END UP BEING A FOCAL POINT FOR THE STRONGEST/LONGEST
LIVED MV POTENTIAL ALONG WITH THE GREATEST THREAT FOR QLCS TYPE
TORNADOES.

IZZI

&&

.DISCUSSION...
327 PM CDT

SHORT TERM...TONIGHT THROUGH WEDNESDAY NIGHT...

A VERY ACTIVE PERIOD OF WEATHER IS EXPECTED...AT LEAST FOR PORTIONS
OF THE AREA...THROUGH WEDNESDAY. THIS INCLUDES A FEW PERIODS OF
SEVERE THUNDERSTORMS AND ALSO A GOOD THREAT FOR VERY HEAVY RAINFALL
AND POSSIBLE FLASH FLOODING. AS SUCH...THIS WILL BE THE FOCUS OF THE
FORECAST.

WE HAVE EXTENDED THE FLASH FLOOD WATCH FOR OUR WESTERN COUNTIES
THROUGH TONIGHT.

TEMPERATURES ACROSS NORTHERN ILLINOIS AND NW INDIANA HAVE JUMPED
INTO THE LOW TO MID 80S OVER THE PAST COUPLE HOURS AFTER THE MORNING
CLOUD COVER CLEARED. WITH DEW POINTS NEAR 70...THIS IS RESULTING IN
MLCAPES AROUND 2,000 J/KG ACROSS THE AREA...PER SPC MESOANALYSIS
PAGE. IN ADDITION...IT APPEARS THAT THE 0-6 KM SHEAR MAY END UP A
BIT STRONGER THAN PREVIOUSLY THOUGHT. VWP DATA INDICATES THAT A SPEED
MAX AROUND 50 KT ...ASSOCIATED WITH A MID LEVEL DISTURBANCE MOVING
INTO NORTHWESTERN IOWA...IS PUNCHING EASTWARD ACROSS IOWA. THUS IT
APPEARS THAT 40 KT OF DEEP LAYER SHEER MAY OVERSPREAD THIS AREA
LATER THIS AFTERNOON AND EVENING AS THIS SPEED MAX SHIFTS EASTWARD.
CURRENT THOUGHTS ARE THAT THE LINE OF CONVECTION TO THE WEST WILL
POSE A SEVERE THREAT FOR MOST OF THE AREA INTO THE EARLY EVENING
HOURS. STRONG DAMAGING WINDS...POSSIBLY IN EXCESS OF 80 MPH...WILL
BE THE PRIMARY THREAT ALONG WITH A SMALL POTENTIAL OF SOME
MARGINALLY SEVERE HAIL.

IT APPEARS THE MAIN FOCUS FOR CONVECTION MAY SHIFT NORTH INTO
WISCONSIN LATER TONIGHT AS THE LOW LEVEL JET FOCUSES FARTHER NORTH.
HOWEVER...THIS APPEARS TO BE SHORTED LIVED...AS CONVECTIVE CHANCES
WILL RETURN ON TUESDAY. IT APPEARS THAT ADDITIONAL PERTURBATIONS IN
THE MEAN QUASI-ZONAL MID LEVEL FLOW...WILL INTERACT WITH THE VERY
MOIST AND UNSTABLE ATMOSPHERE ACROSS THE AREA. IT APPEARS THE CAP
WILL REMAIN FAIRLY WEAK DURING THE DAY...SO IT APPEARS THAT AT LEAST
SOME WIDELY SCATTERED CONVECTION MAY OCCUR...MAINLY ACROSS FAR
NORTHERN ILLINOIS. THIS ACTIVITY COULD AGAIN POSS A SEVERE RISK
ACROSS NORTHERN ILLINOIS WITH STEEP MID LEVEL LAPSE RATES HELPING
PRODUCE MLCAPES IN EXCESS OF 3000 J/KG.

TUESDAY CONVECTION LOOKS LIKE IT WILL BECOME MORE NUMEROUS TUESDAY
EVENING/NIGHT. THE QUASI-ZONAL FLOW PATTERN ACROSS THE CONUS IS
EXPECTED TO BEGIN AMPLIFYING...IN RESPONSE TO AN UPPER LOW OVER THE
EASTERN PACIFIC. ULTIMATELY THIS WILL SET THE STAGE FROM A BUILDING
MID/UPPER LEVEL RIDGE ACROSS THE WESTERN CONUS AND FALLING HEIGHTS
ACROSS THE GREAT LAKES REGION. THIS PROCESS SHOULD ALLOW
ANOTHER...STRONGER...SHORT WAVE TO MOVE ACROSS THE AREA ON
WEDNESDAY. IT APPEARS THIS FEATURE WILL FOCUS THE NOSE OF A 40 KT
LOW LEVEL JET RIGHT ACROSS SOUTHERN WISCONSIN AND NORTHERN ILLINOIS
TUESDAY NIGHT INTO WEDNESDAY. THIS COULD SET THE STAGE FOR VERY HEAVY
RAINFALL ACROSS PORTIONS OF NORTHERN ILLINOIS INTO WEDNESDAY. THIS
LOOKS TO BE THE PERIOD TO REALLY WATCH FOR POSSIBLE FLOODING ACROSS
THE AREA. PWATS ARE PROGGED TO REACH NEARLY 2.00 INCHES...WHICH IS
AROUND THE 99 PERCENTILE. IN ADDITION...THE SOUTHWESTERLY ORIENTATION
OF THE LOW LEVEL JET COULD OFFSET THE MEAN CLOUD BEARING
FLOW...POSSIBLY RESULTING IN SLOW MOVING OR BACK BUILDING SEGMENTS
TUESDAY NIGHT.  HOWEVER...CONFIDENCE IN THE EXACT PLACEMENT OF THE
HEAVIEST RAIN REMAINS IN QUESTION AT THIS TIME...BUT GUIDANCE IS
HINTING THAT NORTHERN ILLINOIS COULD LIE IN THE FAVORED ZONE. THIS
WILL HAVE TO BE WATCHED...WITH THE POSSIBLY OF A FLASH FLOOD WATCH
NEEDED FOR PORTIONS OF NORTHERN ILLINOIS AND NORTHWESTERN INDIANA
DURING THIS PERIOD.

THE SEVERE CONVECTIVE THREAT SHOULD BEGIN TO WANE WEDNESDAY
EVENING AS THE MID LEVEL DISTURBANCE SHIFT EAST OF THE AREA.

TEMPERATURES LOOK TO CONTINUE TO BE PROBLEMATIC FOR THE NEXT COUPLE
OF DAYS...WITH ADDITIONAL BUST POTENTIAL WITH CONVECTIVE ACTIVITY.
HOWEVER...I ONLY MADE MINOR CHANCES TO THE GOING TEMP
FORECAST...MAINLY TO COOL THE NORTHERN AREAS BY A COUPLE DEGREES.

KJB

EXTENDED FORECAST...THURSDAY THROUGH MONDAY...

QUASI ZONAL FLOW IN THE SOUTHERN STREAM EARLY IN THE WEEK WILL
TRANSITION BY THE SECOND HALF OF THE WEEK TO AN INCREASINGLY
AMPLIFIED BROAD WESTERN CONUS RIDGE AND ITS CORRESPONDING LONGWAVE
TROUGH OVER THE EASTERN CONUS.  THIS WOULD PUT THE LOCAL AREA IN
NORTHWEST UPPER FLOW EARLY IN THE WEEKEND...AND THEN UNDER AN UPPER
LOW PUSHING SOUTHWEST ACROSS THE GREAT LAKES BY SUNDAY.  THE MOST
OBVIOUS RAMIFICATION WILL BE MUCH COOLER HIGHS...ESPECIALLY FOR THE
WEEKEND AND EARLY NEXT WEEK.  IN ADDITION...GFS/ECMWF ARE SUGGESTING
THE POSSIBILITY OF THUNDERSTORMS TRIGGERED BY SHORTWAVE ENERGY
DROPPING ACROSS THE AREA INTO THE BASE OF THE EASTERN TROUGH
THURSDAY AND FRIDAY...WHEN CONSIDERABLE LOW LEVEL MOISTURE REMAINS
IN PLACE OVER THE AREA.  DEWPOINTS FALL ALONG WITH THE TEMPERATURES
BY THE WEEKEND...BUT THE DEEPENING UPPER LOW ALSO SUPPORTS A
CONTINUED CHANCE OF SHOWERS INTO MONDAY.

EML

&&

.AVIATION...

//ORD AND MDW CONCERNS...UPDATED 20Z...

* SHRA/TSRA INTO EVENING AND ASSOCIATED POTENTIALLY ERRATIC WIND.

* PSBL FOG DEVELOPMENT OVERNIGHT INTO EARLY TUE.

ZEBIC

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

WARM AND HUMID CONDITIONS IN PLACE ALONG WITH VARIOUS BOUNDARIES TO
KEEP NEXT ROUND OF SHRA/TSRA IN THE FORECAST INTO THIS EVENING.
ATMOSPHERE TO CONTINUE TO RECOVER FROM MORNING CONVECTIVE ACTIVITY.
THINKING IS A FEW TSRA ARE POSSIBLE BY MID AFTERNOON IN AREAS OF
LESSENING/THINNING OF CLOUD COVER AND MAY EXPAND IN COVERAGE BY LATE
AFTERNOON IF MORE WIDESPREAD SUNSHINE OCCURS.  CIRROSTRATUS SHIELD
ASSOCIATED WITH ORGANIZED AREAS OF TSRA/SHRA OVER IA MAY LIMIT
AMOUNT/DURATION OF SUN. TSRA CLUSTERS OVER IA EXPECTED TO ORGANIZE
FURTHER AND TRACK ACROSS NORTHERN ILLINOIS AND POSSIBLY NORTHWEST
INDIANA INTO THE EVENING.

SURFACE WARM FRONT EXPECTED TO REMAIN IN THE VICINITY OR JUST SOUTH
OF THE TERMINALS.  GIVEN HUMID ATMOSPHERE AND ADDITIONAL RAINFALL
AREAS OF MAINLY LIGHT FOG ARE LIKELY OVERNIGHT.

ZEBIC

//ORD AND MDW CONFIDENCE...UPDATED 20Z...

* HIGH CONFIDENCE IN SHRA/TSRA...MEDIUM CONFIDENCE IN PRECISE
  TIMING/COVERAGE.

* HIGH CONFIDENCE IN WIND FORECAST.

* LOW CONFIDENCE IN OVERNIGHT FOG DEVELOPMENT REDUCING VSBYS.

ZEBIC

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

TUESDAY NIGHT THROUGH FRIDAY...PERIODIC CHANCES FOR
THUNDERSTORMS. OTHERWISE EXPECT VFR CIGS.

FRIDAY AND SATURDAY...CHANCE FOR SHOWERS. MAINLY VFR.

SUNDAY...VFR.

BEACHLER

&&

.MARINE...
411 PM CDT

HIGH PRESSURE REMAINS PARKED OFF THE CAROLINA COASTWHILE LOW
PRESSURE CONTINUES TO DRIFT NORTHWARD ACROSS CENTRAL MANITOBA AND
ONTARIO. ADDITIONAL LOW PRESSURE WILL DEVELOP FROM THE CANADIAN
PRAIRIES TO THE NORTHERN PLAINS TUESDAY AND MOVE EASTWARD INTO
WEDNESDAY WITH A CLOSED LOW DEVELOPING OVER THE WESTERN GREAT LAKES
BY WEDNESDAY NIGHT. A LARGER LOW WILL DEVELOP IVER THE GREAT LAKES
LATER FRIDAY AND LIKELY LINGER THROUGH THE WEEKEND BEFORE HIGH
PRESSURE BUILDS IN FROM THE WEST EARLY NEXT WEEK. SOUTHERN WINDS
WILL BE IN PLACE INTO WEDNESDAY WHEN THE FIRST SFC LOW PASSES WHICH
WILL TURN WINDS WEST AND NORTHWEST. SPEEDS WILL FLUCTUATE UP AND
DOWN UNTIL THE LOW PASSES SIMILAR TO PREVIOUS DAYS. A STABLE AIR
MASS OVER THE WATER WILL KEEP AREAS OF DENSE FOG GOING ACROSS MUCH
OF THE NORTHERN PART OF THE LAKE INTO TUESDAY AND PROBABLY INTO
WEDNESDAY FOR THAT MATTER SO THE DENSE FOG ADVISORY MAY NEED TO BE
EXTENDED. WIND SPEEDS LOOK TO REMAIN ON THE LIGHER SIDE FROM
WEDNESDAY THROUGH THE WEEKEND WITH A FAIRLY BAGGY PRESSURE GRADIENT
DEVELOPING AND THE DIRECTION WILL LIKELY VARY FROM WEST TO NORTH.

MDB

&&

.LOT WATCHES/WARNINGS/ADVISORIES...
IL...FLASH FLOOD WATCH...ILZ003-ILZ004-ILZ008-ILZ010-ILZ011-ILZ019
     UNTIL 7 AM TUESDAY.

IN...NONE.
LM...DENSE FOG ADVISORY...LMZ261-LMZ362-LMZ364-LMZ366-LMZ563-LMZ565
     UNTIL 10 AM TUESDAY.

&&

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, Jun 24, 10:19 AM CST, 5 hours 10 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
1119 AM CDT MON JUN 24 2013

ILZ003>006-008-010>014-019>023-032-033-039-INZ001-002-010-011-019-
251630-
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-
1119 AM CDT MON JUN 24 2013 /1219 PM EDT MON JUN 24 2013/

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

.DAY ONE...THIS AFTERNOON AND TONIGHT.

  WEATHER HAZARDS EXPECTED:

   THUNDERSTORMS...THE STRONGEST MAY PRODUCE:
    FREQUENT CLOUD TO GROUND LIGHTNING.
    HEAVY RAIN AND FLASH FLOODING.
    GUSTY WINDS IN EXCESS OF 60 MPH
    HAIL TO THE SIZE OF QUARTERS.

  AREAS AFFECTED AND TIMING:

   ADDITIONAL SHOWERS AND THUNDERSTORMS ARE EXPECTED TO DEVELOP
   THIS AFTERNOON AND CONTINUE EARLY THIS EVENING. THE BEST
   CHANCES FOR STRONG STORMS APPEARS TO REMAIN ALONG AND SOUTH OF
   INTERSTATE 80.

  DISCUSSION:

   CLOUD COVER REMAINS ACROSS THE AREA THIS MORNING IN THE WAKE OF
   THE DECAYING SHOWERS AND THUNDERSTORMS. HOWEVER...REGIONAL
   SATELLITE IMAGERY INDICATES RAPID THINNING OF THE CLOUDS ACROSS
   NORTHERN ILLINOIS...WITH CLEARING NOTED ACROSS PORTIONS OF
   WESTERN ILLINOIS. THEREFORE...CLEARING SKIES ARE EXPECTED BY
   EARLY AFTERNOON...ESPECIALLY FOR AREAS SOUTH OF INTERSTATE 80.
   ONCE SKIES CLEAR INSTABILITY WILL INCREASE. THIS LOOKS TO SET
   THE STAGE FOR ADDITIONAL SCATTERED THUNDERSTORMS THIS AFTERNOON
   AS ANOTHER UPPER LEVEL WEATHER DISTURBANCE APPROACHES THE AREA.
   THESE STORMS ARE EXPECTED TO BE SOMEWHAT SLOW MOVING AND
   EFFICIENT RAINFALL PRODUCERS. THE HEAVY RAINFALL COULD RESULT
   IN FLASH FLOODING...ESPECIALLY ACROSS AREAS THAT HAVE RECEIVED
   HEAVY RAINFALL IN THE PAST 24 TO 48 HOURS. THERE WILL ALSO BE
   AN ISOLATED THREAT FOR SEVERE WINDS AND HAIL WITH SOME OF THE
   STRONGEST STORMS.

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

THERE WILL BE PERIODIC CHANCES FOR THUNDERSTORMS TUESDAY THROUGH
FRIDAY. SOME STORMS COULD REACH SEVERE LEVELS AND PRODUCE FLASH
FLOODING.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED THIS AFTERNOON AND HEAVY RAINFALL
REPORTS AND FLOODING REPORTS ARE APPRECIATED.

&&

LMZ740>745-251630-
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-
1119 AM CDT MON JUN 24 2013

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

.DAY ONE...THIS AFTERNOON AND TONIGHT.

SCATTERED THUNDERSTORMS ARE EXPECTED TODAY. SOME STORMS MAY
PRODUCE GUSTY WINDS IN EXCESS OF 30 KT.

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

THERE WILL BE PERIODIC CHANCES FOR THUNDERSTORMS TUESDAY THROUGH
FRIDAY.

&&

LMZ080-261-362-364-366-563-565-567-669-671-673-675-777-779-868-
870-872-874-876-878-251630-
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-
1119 AM CDT MON JUN 24 2013

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

.DAY ONE...THIS AFTERNOON AND TONIGHT.

SCATTERED THUNDERSTORMS ARE EXPECTED TODAY...MAINLY ACROSS THE
SOUTH HALF OF THE LAKE.

AREAS OF DENSE FOG ARE LIKELY MAINLY OVER THE NORTH HALF OF THE
LAKE THROUGH TONIGHT.

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

DENSE FOG IS POSSIBLE...MAINLY OVER THE NORTH HALF OF THE LAKE
EARLY TUESDAY.

THERE WILL BE PERIODIC CHANCES FOR THUNDERSTORMS MONDAY THROUGH
FRIDAY.

&&

KJB

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

The radar

The Quad Cities radar (KDVN), 87 km away, was scanning. The volume nearest the first event began at 21:29 UTC.

Open the radar archive at this moment

Event by event

44 thunderstorm wind, 1 tornado, 1 lightning. Local standard time, as filed.

Thunderstorm Wind, Lee

When: June 24, 3:29 PM CST to 3:42 PM CST
Where: Lee County, 3.57 mi S of Harmon to 0.41 mi NW of Amboy
Measured: 87 kt (100 mph) estimated gust
Property damage: $100,000
Reported by: NWS Storm Survey
Coordinates: 41.669, -89.539

Winds were estimated in excess of 80 mph and upwards of 100 mph for a 13 mile swath. A large outbuilding bolted to its foundation was destroyed. One part of the barn wall was lifted taking a portion of the foundation with it. Numerous large trees were snapped or uprooted, including one that fell onto the front portion of a house. In Walton, four large grain storage bins were destroyed. Also in Walton, a metal outbuilding was destroyed with debris thrown over 200 yards. Shingle damage was also noted on a few homes.

Tornado, Lee

When: June 24, 3:32 PM CST to 3:36 PM CST
Where: Lee County, 1.45 mi SSW of Harmon to 1.83 mi ENE of Harmon
Rating: EF0
Path length: 2.79 mi
Path width: 100 yd
Property damage: $10,000
Reported by: NWS Storm Survey
Coordinates: 41.700, -89.556

The tornado mainly traveled over farm fields but did take down numerous utility poles, including a few that were bent sharply to the south, opposite of the storm motion which was to the northeast. A weakly constructed barn was destroyed near the end of the path.

Thunderstorm Wind, Lee

When: June 24, 3:40 PM CST
Where: Lee County, 0.69 mi S of Sublette
Measured: 65 kt (75 mph) estimated gust
Property damage: $5,000
Reported by: Trained Spotter
Coordinates: 41.640, -89.230

Up to 18 inch diameter trees were blown down as well as numerous power lines.

Thunderstorm Wind, La Salle

When: June 24, 3:44 PM CST
Where: La Salle County, Mendota
Measured: 74 kt (85 mph) estimated gust
Property damage: $5,000
Reported by: NWS Storm Survey
Coordinates: 41.550, -89.120

Numerous large trees and branches were blown down across town. A free standing light pole was blown down at the high school.

Thunderstorm Wind, La Salle

When: June 24, 3:50 PM CST
Where: La Salle County, 0.32 mi SW of Troy Grove to 0.07 mi SSW of Triumph
Measured: 65 kt (75 mph) estimated gust
Reported by: Trained Spotter
Coordinates: 41.466, -89.084

Trees were blown down near Troy Grove and Triumph.

Thunderstorm Wind, La Salle

When: June 24, 3:55 PM CST
Where: La Salle County, 2.44 mi N of Peru
Measured: 60 kt (69 mph) estimated gust
Property damage: $25,000
Reported by: Amateur Radio
Coordinates: 41.365, -89.130

A semi truck was flipped over by winds on Interstate 80 near mile marker 75.

Thunderstorm Wind, La Salle

When: June 24, 4:00 PM CST to 4:05 PM CST
Where: La Salle County, 0.71 mi SW of Tonica to 0.59 mi WSW of Ticona
Measured: 65 kt (75 mph) estimated gust
Property damage: $25,000
Reported by: Public
Coordinates: 41.212, -89.078

A semi was overturned on Interstate 39. Widespread tree damage occurred in Tonica.

Thunderstorm Wind, La Salle

When: June 24, 4:00 PM CST to 4:10 PM CST
Where: La Salle County, 1.38 mi S of Ottawa to 0.87 mi ESE of Ottawa
Measured: 54 kt (62 mph) measured gust
Reported by: Mesonet
Coordinates: 41.330, -88.850

Winds were measured to 62 mph at a mesonet site approximately a mile south-southwest of Ottawa. Large trees were uprooted on the south side of Ottawa.

Thunderstorm Wind, De Kalb

When: June 24, 4:11 PM CST
Where: De Kalb County, Sandwich
Measured: 65 kt (75 mph) estimated gust
Property damage: $20,000
Reported by: Law Enforcement
Coordinates: 41.650, -88.620

Sandwich Police reported numerous trees and power lines blown down. One tree fell on a vehicle, but the occupant was not harmed.

Thunderstorm Wind, De Kalb

When: June 24, 4:15 PM CST to 4:20 PM CST
Where: De Kalb County, 2.58 mi SE of Wilkinson to 1.03 mi W of Sycamore
Measured: 52 kt (60 mph) estimated gust
Property damage: $5,000
Reported by: Trained Spotter
Coordinates: 41.970, -88.740

Winds were estimated to 60 mph near Bethany Road and 1st Street. Small newly planted trees were blown down. Powerlines were also blown down in the city of DeKalb.

Thunderstorm Wind, Grundy

When: June 24, 4:30 PM CST
Where: Grundy County, 0.85 mi N of Minooka to 1.28 mi NE of Minooka
Measured: 65 kt (75 mph) estimated gust
Property damage: $60,000
Reported by: Law Enforcement
Coordinates: 41.462, -88.272

Two semi trucks were blown over on Interstate 80 near Ridge Road. A tree was blown onto a house in Minooka.

Thunderstorm Wind, Kane

When: June 24, 4:30 PM CST
Where: Kane County, 1.72 mi SW of Lovedale
Measured: 60 kt (69 mph) estimated gust
Reported by: Trained Spotter
Coordinates: 41.762, -88.373

An 18 to 24 inch diameter tree snapped near the base and was leaning against a house. Numerous smaller branches were blown down on the west side of Aurora.

Thunderstorm Wind, Grundy

When: June 24, 4:32 PM CST
Where: Grundy County, 0.86 mi NE of Mazon
Measured: 65 kt (75 mph) estimated gust
Reported by: Public
Coordinates: 41.240, -88.420

A large tree was snapped at the base.

Thunderstorm Wind, Kendall

When: June 24, 4:33 PM CST
Where: Kendall County, 1.32 mi NE of Oswego
Measured: 60 kt (69 mph) estimated gust
Reported by: Trained Spotter
Coordinates: 41.692, -88.330

A large tree was uprooted on Fox Bend Golf Course off of Ogden Avenue.

Thunderstorm Wind, Kane

When: June 24, 4:37 PM CST
Where: Kane County, 1.08 mi SSW of Elgin Arpt to 1.39 mi SE of Elgin Arpt
Measured: 52 kt (60 mph) estimated gust
Reported by: Trained Spotter
Coordinates: 42.055, -88.285

Heavy tree damage was reported near Cooper Avenue including power lines down.

Thunderstorm Wind, Du Page

When: June 24, 4:40 PM CST
Where: Du Page County, 2.52 mi NW of Bolingbrook to 1.14 mi ESE of Naperville
Measured: 50 kt (58 mph) estimated gust
Property damage: $5,000
Reported by: Fire Department/Rescue
Coordinates: 41.694, -88.166

A roof was damaged near 104th Street and Plainfield Road. A Street was blocked by 6-inch branches near Charles Street and Chicago Avenue.

Thunderstorm Wind, Will

When: June 24, 4:40 PM CST to 4:41 PM CST
Where: Will County, 0.62 mi W of Plainfield Clow Arpt to 2.48 mi ESE of Barbers Corners
Measured: 65 kt (75 mph) estimated gust
Property damage: $15,000
Reported by: Trained Spotter
Coordinates: 41.698, -88.142

A large exit sign was blown over near I-355 and I-55. Several trees were blown down including approximately 6 trees that were around a foot in diameter. Shingles were peeled off the roofs of houses. A sun room collapsed in one house. A fence was blown down about a mile west of the intersection of Weber Road and Boughton Road. A two foot tree was blown down near Pinecrest Road and Briarcliff Road.

Thunderstorm Wind, Will

When: June 24, 4:40 PM CST
Where: Will County, 1.24 mi SE of Wolfs
Measured: 57 kt (66 mph) measured gust
Reported by: Mesonet
Coordinates: 41.690, -88.250

Thunderstorm Wind, Will

When: June 24, 4:40 PM CST to 4:41 PM CST
Where: Will County, 0.91 mi S of Barbers Corners to 0.87 mi S of Barbers Corners
Measured: 50 kt (58 mph) estimated gust
Reported by: Trained Spotter
Coordinates: 41.707, -88.069

Numerous tree limbs up to six inches in diameter were snapped on Grand Canyon Drive near Arrowhead Lane.

Thunderstorm Wind, Will

When: June 24, 4:40 PM CST to 4:45 PM CST
Where: Will County, 0.37 mi NNW of Crystal Lawns to 1.74 mi ESE of Joliet
Measured: 55 kt (63 mph) estimated gust
Property damage: $800,000
Reported by: County Official
Coordinates: 41.535, -88.132

Hundreds of trees were blown down across Joliet, including some that fell onto structures. Nineteen power lines were blown down. There were 56 road closures across town due to debris.

Thunderstorm Wind, Will

When: June 24, 4:41 PM CST
Where: Will County, 0.39 mi NW of Lockport Lewis Arpt
Measured: 53 kt (61 mph) measured gust
Reported by: Official NWS Observations
Coordinates: 41.604, -88.085

Thunderstorm Wind, Will

When: June 24, 4:41 PM CST
Where: Will County, 1.27 mi SE of Normantown
Measured: 55 kt (63 mph) estimated gust
Reported by: Trained Spotter
Coordinates: 41.637, -88.213

Six inch diameter trees were snapped at the base near 135th Street and Van Dyke Road.

Thunderstorm Wind, Will

When: June 24, 4:43 PM CST
Where: Will County, 1.63 mi E of Prestwick
Measured: 50 kt (58 mph) measured gust
Reported by: Trained Spotter
Coordinates: 41.503, -87.889

Winds to 58 mph were measured near Wolf Road and Highway 30.

Thunderstorm Wind, Du Page

When: June 24, 4:49 PM CST
Where: Du Page County, 0.55 mi S of Downers Grove
Measured: 51 kt (59 mph) measured gust
Reported by: Mesonet
Coordinates: 41.792, -87.998

A gust to 59 mph was measured at Whittier School.

Thunderstorm Wind, Du Page

When: June 24, 4:50 PM CST
Where: Du Page County, Westmont
Measured: 55 kt (63 mph) estimated gust
Reported by: Trained Spotter
Coordinates: 41.800, -87.970

A 12 inch diameter tree snapped at the base.

Thunderstorm Wind, Will

When: June 24, 4:52 PM CST
Where: Will County, 0.52 mi W of New Lenox
Measured: 50 kt (58 mph) estimated gust
Reported by: Trained Spotter
Coordinates: 41.520, -87.980

A 6 inch diameter tree branch was blown down.

Thunderstorm Wind, Will

When: June 24, 4:52 PM CST
Where: Will County, 1.48 mi NNE of Cherry Hill
Measured: 56 kt (64 mph) measured gust
Reported by: Mesonet
Coordinates: 41.570, -88.010

Thunderstorm Wind, Du Page

When: June 24, 4:53 PM CST
Where: Du Page County, 0.12 mi ENE of Hinsdale
Measured: 53 kt (61 mph) measured gust
Reported by: Mesonet
Coordinates: 41.801, -87.928

A gust to 61 mph was measured at Hinsdale Middle School.

Thunderstorm Wind, Du Page

When: June 24, 4:53 PM CST
Where: Du Page County, 0.65 mi SSE of Burr Ridge to 0.17 mi SE of Burr Ridge
Measured: 55 kt (63 mph) estimated gust
Reported by: Broadcast Media
Coordinates: 41.742, -87.944

Large trees were blown down near Route 83 and Interstate 55. A 14 inch diameter tree was blown down between Midway Drive and 79th Street just north of Interstate 55.

Thunderstorm Wind, Cook

When: June 24, 4:55 PM CST
Where: Cook County, Oak Forest
Measured: 50 kt (58 mph) estimated gust
Reported by: Trained Spotter
Coordinates: 41.600, -87.750

A 6 inch diameter tree was snapped.

Thunderstorm Wind, Cook

When: June 24, 4:55 PM CST
Where: Cook County, Oak Lawn
Measured: 52 kt (60 mph) estimated gust
Reported by: Trained Spotter
Coordinates: 41.720, -87.750

Tree branches were reported down across Oak Lawn. Winds were estimated to 60 mph.

Thunderstorm Wind, Cook

When: June 24, 4:55 PM CST
Where: Cook County, 0.52 mi E of Bridgeview
Measured: 52 kt (60 mph) measured gust
Reported by: COOP Observer
Coordinates: 41.750, -87.790

Thunderstorm Wind, Will

When: June 24, 4:59 PM CST
Where: Will County, 0.52 mi ESE of Franklin Square
Measured: 55 kt (63 mph) estimated gust
Reported by: Emergency Manager
Coordinates: 41.498, -87.790

A large tree approximately 8 to 10 inches in diameter was blown down near South Harlem Avenue and Prestwick Drive.

Thunderstorm Wind, Cook

When: June 24, 5:00 PM CST
Where: Cook County, 0.45 mi SE of Park Ridge to 1.07 mi SSE of Countryside
Measured: 60 kt (69 mph) estimated gust
Reported by: Trained Spotter
Coordinates: 42.025, -87.865

A six inch tree was blown down and was blocking the road near Oakton Street and Algonquin Road. A four foot diameter tree was snapped at the base near Golf Road and Washington Road.

Thunderstorm Wind, Will

When: June 24, 5:00 PM CST
Where: Will County, 2.48 mi NNW of Peotone
Measured: 65 kt (75 mph) estimated gust
Property damage: $25,000
Reported by: Law Enforcement
Coordinates: 41.361, -87.805

A semi was lifted upwards of 10 feet into the air and blown over on Interstate 57 near the northbound rest area.

Thunderstorm Wind, Cook

When: June 24, 5:00 PM CST to 5:03 PM CST
Where: Cook County, 1.41 mi NNW of Western Spgs to 0.22 mi S of North Riverside
Measured: 61 kt (70 mph) estimated gust
Reported by: Trained Spotter
Coordinates: 41.800, -87.888

Winds were estimated to near 70 mph caused extensive tree damage in the communities of Western Springs, La Grange, and Riverside. Extensive tree damage was reported along the railroad. A six inch diameter tree was blown down at 55th Street and La Grange Road. A six inch diameter tree limb was blown down on the 2300 block of 1st Avenue. Multiple lanes were blocked.

Thunderstorm Wind, Cook

When: June 24, 5:00 PM CST
Where: Cook County, (Mdw)midway Arpt Chi
Measured: 58 kt (67 mph) measured gust
Reported by: ASOS
Coordinates: 41.780, -87.750

Thunderstorm Wind, Cook

When: June 24, 5:00 PM CST to 5:03 PM CST
Where: Cook County, 0.86 mi SW of East Hazel Crest
Measured: 61 kt (70 mph) estimated gust
Reported by: Trained Spotter
Coordinates: 41.560, -87.660

Nearly continuous winds estimated to 70 mph were reported. A 6 inch tree limb was blown down onto a deck. Numerous tree limbs were blown down across Homewood.

Lightning, Will

When: June 24, 5:00 PM CST
Where: Will County, Joliet
Property damage: $150,000
Reported by: County Official
Coordinates: 41.530, -88.100

A natural gas transmission facility was struck by lightning resulting in the building catching on fire.

Thunderstorm Wind, Will

When: June 24, 5:04 PM CST
Where: Will County, 1.38 mi S of Park Forest South
Measured: 56 kt (64 mph) measured gust
Reported by: Mesonet
Coordinates: 41.450, -87.720

Thunderstorm Wind, Kankakee

When: June 24, 5:07 PM CST
Where: Kankakee County, Bourbonnais
Measured: 52 kt (60 mph) estimated gust
Property damage: $500
Reported by: Trained Spotter
Coordinates: 41.150, -87.880

A 4.5 inch diameter tree limb fell onto a fence.

Thunderstorm Wind, Will

When: June 24, 5:08 PM CST
Where: Will County, 0.38 mi S of Crete to 0.76 mi SSE of Crete
Measured: 66 kt (76 mph) measured gust
Reported by: Emergency Manager
Coordinates: 41.445, -87.631

Winds gusting to 76 mph were measured by a handheld anemometer on top of a two story building. A two foot diameter tree snapped off about 15 feet from the base of the tree. A large tree fell onto a powerline on the 1400 block of Douglas Lane. The tree caught on fire.

Thunderstorm Wind, Kankakee

When: June 24, 5:14 PM CST
Where: Kankakee County, 1.13 mi SW of Bourbonnais
Measured: 52 kt (60 mph) estimated gust
Reported by: Trained Spotter
Coordinates: 41.137, -87.894

Large tree limbs fell onto power lines at Route 113 and Tower Road. The downed lines caused a small grass fire.

Thunderstorm Wind, Kankakee

When: June 24, 5:25 PM CST
Where: Kankakee County, 0.5 mi SE of Momence to 0.92 mi ESE of Momence
Measured: 60 kt (69 mph) measured gust
Property damage: $2,000
Reported by: Trained Spotter
Coordinates: 41.164, -87.664

Numerous large trees were uprooted with a small limb falling onto a car near Wilbur Street and Chatfield Street. A pine tree fell on and damaged a front porch near 2nd Street and Pine Street.

Thunderstorm Wind, Ford

When: June 24, 5:40 PM CST
Where: Ford County, 1.85 mi WSW of Gibson City to 1.68 mi SW of Gibson City
Measured: 60 kt (69 mph) estimated gust
Property damage: $3,000
Reported by: Law Enforcement
Coordinates: 40.462, -88.404

A row of power lines were blown down into a field south of Route 9 along County Road 300E. A Large tree was uprooted across Route 54.

Thunderstorm Wind, Ford

When: June 24, 5:46 PM CST
Where: Ford County, 3.89 mi S of Elliott
Measured: 55 kt (63 mph) estimated gust
Property damage: $1,000
Reported by: Law Enforcement
Coordinates: 40.414, -88.272

Power lines were blown down and a power pole was broken near the intersection of 1000E and 100N.

What these are

Thunderstorm Wind: Winds from a thunderstorm of 50 knots (58 mph) or more, or lower winds that caused damage or casualties. Measured gusts are marked MG, estimated EG.
Tornado: A violently rotating column of air in contact with the ground and extending from a thunderstorm, filed with its path, width and Fujita or Enhanced Fujita rating from the damage survey.
Lightning: A lightning strike that killed, injured or caused damage.

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

The same day elsewhere

Every storm in Illinois in 2013 Every state in 2013 This day in weather history The tornado archive for Illinois, 2013 Warnings in Illinois, June 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: 461032, 461038, 461043, 461044, 461047, 461053, 461048, 461049, 461052, 461715, 461716, 461717, 463774, 463766, 463777, 463771, 464136, 464141, 464146, 465422, 464147, 464462, 464148, 464475, 464476, 464477, 464483, 464479, 465106, 464480, 464485, 464486, 465094, 464482, 465077, 465079, 465081, 465083, 465423, 465090, and more.