Chicago, IL

Weather Forecast Office

June 12th, 2013: Severe Weather Event

Overview and Science | Radar | Damage Survey Results | Storm Reports

Overview and Science

A potent upper level disturbance interacted with a very warm and moist air mass on Wednesday afternoon and evening, and this lead to the development of severe thunderstorms. The images below are water vapor images from the weather satellite. These images indicate the amount of water vapor in the upper atmosphere. This allows us to see the strength and placement of weather disturbances in the atmosphere. In the images below you will notice the orange colors marked with the red arrow. This is an indication of a mid-level jet streak (a band of stronger upper level winds) associated with a significant upper level disturbance. The right hand figure, taken about 30 minutes after the left image, shows rapid thunderstorm development. The updrafts associated with the thunderstorms lift large amounts of water vapor into the upper atmosphere, which is detected here by the satellite. Overall, the approach of this upper level disturbance dynamically induced cooler mid-level temperatures due to increased forcing for ascent. This process allowed the cap to erode and thunderstorms to rapidly develop across north central Illinois. The cap is a basically a corridor of warmer temperatures aloft which act as a lid in the atmosphere, keeping thunderstorms from developing.

Water Vapor Imagery

Satellite Water Vapor Image from 2:52 PM Wednesday Afternoon. Notice the Orange colors marked by the red arrow from the Dakotas southeastward across Iowa. This is an indication of stronger upper level winds associated with a significant upper level atmospheric disturbance.	Same as the left image, except this image was taken at 325 PM only 30 minutes later. Notice all the blue and green areas across north central Illinois and into Wisconsin. This is showing the rapid development of thunderstorms. What this represents is a vast amount of water vapor being lifted into the upper atmosphere by the strong updrafts of the storms.

Radar

KLOT 0.5° Reflectivity: 3:35 PM	KLOT 0.5° Velocity: 4:35 PM

The radar imagery here starting at 3:35 PM and running each hour through 6:30 PM shows that once thunderstorms developed, they rapidly became severe. The very unstable atmosphere combined with a good amount of wind shear (changes in wind speeds and direction with height) allowed these storms to become super cellular. A super cell is severe thunderstorm characterized by a rotating updraft. Super cells are typically the thunderstorms that associated with tornados. However, they are also known for producing large hail and strong winds. These storms prompted several warnings, including for tornados as they moved eastward towards the western suburbs of Chicago. Survey teams will be going out today to study to some of the damage to determine if any tornados occurred.

KLOT 0.5° Reflectivity: 5:35 PM	KLOT 0.5° Velocity: 6:35 PM

These radar images during the late afternoon and evening indicate that the thunderstorms began to train from west to east over the same areas. These storms produced heavy amounts of rain on the order of 1 to 2 inches per hour and this lead to flash flooding across portions of the area.

KLOT 0.5° Reflectivity from Lee to Kendall Counties	KLOT 0.5° Storm Relative Motion from Lee to Kendall Counties

Click images for loop. This loop depicts how several individual cells, mainly with supercell structure at first, morph into a larger complex with segments that quickly propogate forward. These are the portions of the storms where strong winds were present, which were realized at the surface in places. Clear inflow and rotation was seen early on, which included the Shabbona area tornado. This would keep some semblence eastward in far southern DeKalb County and then re-intensify south of Plano, where numerous wall cloud and funnel cloud reports were received. This includes the one below.

Photos

Wall cloud from the south side of Yorkville

As a reminder, plese think safety first when viewing thunderstorms and if under a warning or sensing immediate dangerous weather conditions, seek shelter immediately.

Damage Survey Results

Manteno, IL and Northwest Indiana Damage Survey Results

PUBLIC INFORMATION STATEMENT

NATIONAL WEATHER SERVICE CHICAGO IL

414 PM CDT THU JUN 13 2013 /514 PM EDT THU JUN 13 2013/

...MANTENO IL AND NORTHWEST INDIANA DAMAGE SURVEY RESULTS...

* MAXIMUM EF-SCALE RATING: EF-0

* FATALITIES: NONE

* INJURIES: NONE

* BEGIN TIME/LOCATION: 06/12/2013...750 PM CDT

4.7 MILES NW OF MANTENO IL

LAT 41.2924 LONG -87.9086

* END TIME/LOCATION: 06/12/2013...751 PM CDT

4.6 MILES NW OF MANTENO IL

LAT 41.2918 LONG -87.9040

* MAXIMUM ESTIMATED WIND SPEED: 85 MPH

* PATH LENGTH: 0.25 MILES

* MAXIMUM PATH WIDTH: 50 YARDS

* DISCUSSION/DAMAGE:

NATIONAL WEATHER SERVICE PERSONNEL SURVEYED DAMAGE NORTHWEST OF

MANTENO ILLINOIS IN KANKAKEE COUNTY AND ACROSS NORTHWEST INDIANA.

THE SURVEY TEAM DETERMINED THAT A WEAK AND BRIEF TORNADO OCCURRED

NEAR MANTENO...WHILE STRAIGHT LINE WINDS WERE RESPONSIBLE FOR

DAMAGE ELSEWHERE NEAR MANTENO AND INTO NORTHWEST INDIANA.

THE MANTENO TORNADO BRIEFLY TOUCHED DOWN AT A FARMSTEAD JUST

SOUTH OF THE INTERSECTION OF COUNTY LINE ROAD AND NORTH 1500 WEST

ROAD. AT THIS LOCATION THE TORNADO COLLAPSED A BARN KILLING A

HORSE. DEBRIS WAS TOSSED ALMOST 75 YARDS SOUTHEAST ACROSS THE ROAD

INTO THE ADJACENT FIELD. THE TORNADO WAS RATED A HIGH END EF-0 AT

THIS LOCATION WITH A PATH LENGTH OF 0.25 MILES...A WIDTH OF 50

YARDS...AND MAXIMUM ESTIMATED WINDS OF 85 MPH. AN AERIAL PHOTO

SHOWING THE TORNADO SCAR INDICATED THAT THE TORNADO QUICKLY

DISSIPATED IN THE FIELD EAST OF THE FARM.

ADDITIONAL DAMAGE ATTRIBUTED TO STRAIGHT LINE WINDS WAS FOUND

DOWNSTREAM OF THE TORNADO PATH TOWARD THE WEST SIDE OF MANTENO.

THIS INCLUDED SNAPPED TREE BRANCHES...SNAPPED POWER POLES...MINOR

ROOF DAMAGE TO A GARAGE...AND A COLLAPSED CHURCH THAT WAS UNDER

CONSTRUCTION. THE TEAM ALSO INVESTIGATED MULTIPLE REPORTS OF

DAMAGE ACROSS NORTHWEST INDIANA AND ATTRIBUTED THESE TO STRAIGHT

LINE WINDS LIKELY APPROACHING 100 MPH. THESE DAMAGE REPORTS FOR

INDIANA HAVE PREVIOUSLY BEEN SHARED AS LOCAL STORM REPORTS.

Manteno Aerial photo courtesy of WGN.

Damage to a barn near Manteno.

Debris from damage blown to adjacent field.

Shabbona, IL Damage Survey Results

PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE CHICAGO IL
453 PM CDT THU JUN 13 2013 /553 PM EDT THU JUN 13 2013/

...SHABBONA ILLINOIS DAMAGE SURVEY RESULTS...

* MAXIMUM EF-SCALE RATING: EF-1

* FATALITIES:  NONE

* INJURIES:    NONE

* BEGIN TIME/LOCATION:  06/12/2013...432 PM CDT
                        2.5 MILES SW OF SHABBONA IL
                        LAT 41.7344  LONG -88.8923

* END TIME/LOCATION:    06/12/2013...437 PM CDT
                        3 MILES SE OF SHABBONA IL
                        LAT 41.7314  LONG -88.8485

* MAXIMUM ESTIMATED WIND SPEED:  95 MPH

* PATH LENGTH:                   2.25 MILES

* MAXIMUM PATH WIDTH:            100 YARDS

* DISCUSSION/DAMAGE:

NATIONAL WEATHER SERVICE PERSONNEL SURVEYED DAMAGE IN EASTERN
LEE...SOUTHERN DE KALB...AND KENDALL COUNTIES OF ILLINOIS. THE
SURVEY TEAM DETERMINED THAT MUCH OF WHAT THEY FOUND WAS STRAIGHT
LINE WIND DAMAGE...BUT ONE AREA SOUTH OF SHABBONA IN SOUTHEAST DE
KALB COUNTY WAS CONFIRMED TO BE A TORNADO.

THE MAXIMUM DAMAGE OCCURRED OVER AN APPROXIMATELY ONE MILE LONG
SEGMENT OF THE PATH WHERE THE TORNADO SNAPPED NUMEROUS UTILITY
POLES AND AROUND 80 PERCENT OF THE LARGE HARDWOOD TREES. THIS AREA 
COINCIDED WITH THE SOUTHERN END OF SHABBONA LAKE STATE PARK ALONG 
SHABBONA GROVE ROAD. ALONG THE REMAINDER OF THE TORNADO PATH THERE 
WAS MINOR TREE DAMAGE. MINOR SHINGLE PEELING WAS SEEN AT ONE 
LOCATION...BUT FOR THE MOST PART THE TORNADO DID NOT INTERSECT ANY 
STRUCTURES.

THIS TORNADO PATH ALSO WAS COINCIDENT WITH A NEARLY MILE-WIDE
SWATH OF LARGE HAIL THAT PRODUCED EXTENSIVE SHREDDING AND SMASHING
OF CROPS.

ADDITIONAL INFORMATION ON THE WIND DAMAGE IN THIS AREA WILL BE
PROVIDED AS IT BECOMES AVAILABLE. THE DAMAGE WAS SCATTERED AND
CONSISTENT WITH MAINLY 60-80 MPH WINDS. THIS INCLUDED ABOUT A
HALF DOZEN GRAIN BINS DENTED AND NUMEROUS LARGE TREES DOWNED.

THIS PRELIMINARY INFORMATION WAS DETERMINED BY NATIONAL
WEATHER SERVICE SURVEY TEAMS AND IS SUBJECT TO CHANGE PENDING
FINAL REVIEW OF THE EVENT AND PUBLICATION IN NATIONAL WEATHER
SERVICE STORM DATA.

THIS INFORMATION WILL ALSO BE PROVIDED ON OUR WEBSITE AT

WWW.WEATHER.GOV/CHICAGO. MORE INFORMATION MAY BECOME AVAILABLE AT

A LATER DATE.

FOR REFERENCE...THE ENHANCED FUJITA SCALE CLASSIFIES TORNADOES

INTO THE FOLLOWING CATEGORIES:

EF0...WIND SPEEDS 65 TO 85 MPH

EF1...WIND SPEEDS 86 TO 110 MPH

EF2...WIND SPEEDS 111 TO 135 MPH

EF3...WIND SPEEDS 136 TO 165 MPH

EF4...WIND SPEEDS 166 TO 200 MPH

EF5...WIND SPEEDS GREATER THAN 200 MPH

$$

RODRIGUEZ/FRYAR/LENNING/MTF/RC

Tornado damage in Shabbona Lake State Park a few miles south of Shabbona.

Smashed tall grass under part of the tornadic circulation.

Not much damage, but ironically this is NWS observing equipment in Shabbona Lake State Park which was titled by the winds near the EF-1 tornado.

Hail damage to crops. The lack of visible crop in the immediate forefront fields help to show that. Note the fields in the distance are more green and full. When examining these crops in the foreground up close, they were shredded and smashed, with no leaves giving this appearance above.

Wind damage four miles northeast of Plano.

Wind damage four miles northeast of Plano. This barn door had been blown around 40 yards and had smashed an iron railing on the porch of this house. It had led to the railing being jarred out of the cement block stairs it was in.

Storm Reports

Nationwide Reports

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
423 PM CDT FRI JUN 14 2013

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

0343 PM     FUNNEL CLOUD     HARMON                  41.72N 89.56W
06/12/2013                   LEE                IL   PUBLIC

            RELAYED VIA SOCIAL MEDIA

0406 PM     FUNNEL CLOUD     PAW PAW                 41.69N 88.98W
06/12/2013                   LEE                IL   TRAINED SPOTTER

            ROUTE 251 AND INTERSTATE 39

0415 PM     HAIL             WATERMAN                41.77N 88.77W
06/12/2013  M1.50 INCH       DEKALB             IL   TRAINED SPOTTER

0425 PM     FUNNEL CLOUD     ROCKFORD                42.27N 89.06W
06/12/2013                   WINNEBAGO          IL   LAW ENFORCEMENT

            HEADING NORTHEAST

0429 PM     HAIL             1 SE SUBLETTE           41.63N 89.21W
06/12/2013  E1.00 INCH       LEE                IL   TRAINED SPOTTER

            NEAR US 52 AND MAYTOWN ROAD.

0430 PM     HAIL             ROCKFORD                42.27N 89.06W
06/12/2013  M1.75 INCH       WINNEBAGO          IL   TRAINED SPOTTER

            NEAR INTERSECTION OF I-39 AND I-90

0430 PM     TSTM WND DMG     2 NE PAW PAW            41.71N 88.95W
06/12/2013                   LEE                IL   NWS STORM SURVEY

            LARGE OAK TREE DOWNED ALONG WITH SEVERAL LARGE BRANCHES.
            TIME ESTIMATED PER RADAR.

0432 PM     TORNADO          3 SW SHABBONA           41.73N 88.92W
06/12/2013                   DE KALB            IL   NWS STORM SURVEY

            A NATIONAL WEATHER SERVICE STORM SURVEY DETERMINED AN
            EF-1 TORNADO WITH MAXIMUM WINDS AROUND 95 MPH MOVED 2.25
            MILES ENDING 3SE OF SHABBONA. THE MAXIMUM PATH WIDTH WAS
            AROUND 100 YARDS. THE PRIMARY DAMAGE WAS DOZENS OF LARGE
            HARDWOOD TREES SNAPPED AND DOWNED ACROSS THE SOUTHERN
            PART OF SHABBONA LAKE STATE PARK. NUMEROUS UTILITY POLES
            WERE ALSO SNAPPED. TIME ESTIMATED PER RADAR.

0432 PM     HAIL             3 SW SHABBONA           41.73N 88.92W
06/12/2013  E1.75 INCH       DE KALB            IL   NWS STORM SURVEY

            LARGE HAIL WAS REPORTED BY THE PUBLIC. AN NWS STORM
            SURVEY TEAM IN THE SAME AREA DETERMINED AN APPROXIMATELY
            ONE MILE WIDE SWATH OF MAJOR CROP SHREDDING AND SMASHING
            DUE TO HAIL. BASED ON THE REPORTS AND THE DAMAGE SEEN THE
            HAIL WAS LIKELY AT LEAST GOLF BALL SIZE.

0439 PM     TSTM WND DMG     5 S SHABBONA            41.69N 88.88W
06/12/2013                   DE KALB            IL   NWS STORM SURVEY

            LARGE GRAIN BIN DENTED. MULTIPLE LARGE TREES DOWNED AT A
            COUPLE FARMSTEADS. TIME ESTIMATED PER RADAR.

0444 PM     FUNNEL CLOUD     SOMONAUK                41.63N 88.68W
06/12/2013                   LA SALLE           IL   TRAINED SPOTTER

            CHICAGO RD AND SOMONAUK RD

0445 PM     TSTM WND DMG     LELAND                  41.61N 88.80W
06/12/2013                   LA SALLE           IL   LAW ENFORCEMENT

            NUMEROUS LARGE OAK TREES DOWNED IN TOWN.

0448 PM     HAIL             5 NE EARLVILLE          41.64N 88.86W
06/12/2013  E1.75 INCH       DE KALB            IL   PUBLIC

            RELAYED TO STORM DAMAGE SURVEY TEAM. OCCURRED NEAR THE
            SMALL TOWN OF ROLLO. TIME ESTIMATED PER RADAR.

0452 PM     FUNNEL CLOUD     2 NNW SOMONAUK          41.66N 88.70W
06/12/2013                   DE KALB            IL   LAW ENFORCEMENT

            RELAYED THROUGH THE PUBLIC. TIME ESTIMATED PER RADAR.

0458 PM     TSTM WND DMG     SHABBONA                41.76N 88.88W
06/12/2013                   DEKALB             IL   LAW ENFORCEMENT

            TREES AND POWER LINES DOWN

0503 PM     HAIL             EARLVILLE               41.59N 88.92W
06/12/2013  M1.00 INCH       LA SALLE           IL   COCORAHS

0508 PM     TSTM WND DMG     4 SW YORKVILLE          41.60N 88.50W
06/12/2013                   KENDALL            IL   NWS STORM SURVEY

            A FEW UTILITY POLES AND A LARGE TREE DOWNED ALONG BUDD
            ROAD. TIME ESTIMATED PER RADAR.

0509 PM     TSTM WND DMG     2 E LITTLE ROCK         41.72N 88.54W
06/12/2013                   KENDALL            IL   NWS STORM SURVEY

            LARGE TREE AND SEVERAL LARGE BRANCHES DOWNED ALONG
            CHICAGO ROAD AT MULTIPLE FARMSTEADS.

0511 PM     TSTM WND GST     SANDWICH                41.65N 88.62W
06/12/2013  M65.00 MPH       DEKALB             IL   TRAINED SPOTTER

0511 PM     TSTM WND DMG     4 NE PLANO              41.70N 88.48W
06/12/2013                   KENDALL            IL   NWS STORM SURVEY

            A HALF DOZEN LARGE GRAIN BINS DENTED INCLUDING ONE BIN
            SHIFTED SEVERAL FEET WITH ITS ROOF PEELED AWAY. IN
            ADDITION...A LARGE BARN DOOR WAS BLOWN OFF AND INTO A
            HOUSE PORCH CAUSING MINOR DAMAGE TO THE HOME. WINDS
            ESTIMATED TO HAVE BEEN 70 TO 80 MPH PER THIS DAMAGE.
            BEGINNING TIME ESTIMATED PER RADAR. THE PUBLIC NOTED THE
            WINDS LASTING AROUND FIVE MINUTES.

0514 PM     FUNNEL CLOUD     2 S YORKVILLE           41.61N 88.45W
06/12/2013                   KENDALL            IL   PUBLIC

            REPORTED WITH PHOTOS NEAR THE JUNCTION OF IL HIGHWAYS 47
            AND 71.

0515 PM     TSTM WND DMG     9 S YORKVILLE           41.51N 88.45W
06/12/2013                   KENDALL            IL   EMERGENCY MNGR

            TREES DOWN NEAR ROUTES 47 AND 52. POSSIBLE TORNADO.

0525 PM     HAIL             PLANO                   41.66N 88.53W
06/12/2013  M1.00 INCH       KENDALL            IL   TRAINED SPOTTER

            BETWEEN YORKVILLE AND PLANO. ESTIMATED 70 MPH WINDS.
            TREES BENT OVER.

0528 PM     FUNNEL CLOUD     PLAINFIELD              41.62N 88.20W
06/12/2013                   WILL               IL   TRAINED SPOTTER

0531 PM     TSTM WND GST     2 SW LISBON             41.46N 88.51W
06/12/2013  M69.00 MPH       KENDALL            IL   TRAINED SPOTTER

0531 PM     FUNNEL CLOUD     SOUTH ELGIN             42.00N 88.30W
06/12/2013                   KANE               IL   TRAINED SPOTTER

            RT 31 AND STEARNS RD

0532 PM     HAIL             OSWEGO                  41.70N 88.33W
06/12/2013  M1.75 INCH       KENDALL            IL   TRAINED SPOTTER

            CHESTNUT AND GROVE RD.

0533 PM     TSTM WND DMG     4 W PLAINFIELD          41.62N 88.28W
06/12/2013                   KENDALL            IL   NWS EMPLOYEE

            LARGE TREE SNAPPED

0535 PM     HEAVY RAIN       4 WSW GILBERTS          42.08N 88.43W
06/12/2013  M0.79 INCH       KANE               IL   COCORAHS

            RAIN FELL IN 20 MINUTES

0535 PM     HAIL             NAPERVILLE              41.76N 88.15W
06/12/2013  E1.50 INCH       DUPAGE             IL   PUBLIC

0535 PM     HAIL             5 S AURORA              41.69N 88.31W
06/12/2013  E1.75 INCH       KENDALL            IL   NWS EMPLOYEE

            QUARTER TO GOLFBALL SIZED HAIL REPORTED ON EAST SIDE OF
            OSWEGO...TIME CORRECTED FROM EARLIER REPORT. ACTUAL TIME
            WAS AROUND 535 PM CDT.

0537 PM     HAIL             OSWEGO                  41.70N 88.33W
06/12/2013  M1.00 INCH       KENDALL            IL   TRAINED SPOTTER

0540 PM     HAIL             OSWEGO                  41.70N 88.33W
06/12/2013  M1.00 INCH       KENDALL            IL   TRAINED SPOTTER

            RT 30 AND RT 34

0540 PM     HAIL             BOULDER HILL            41.71N 88.34W
06/12/2013  E1.75 INCH       KENDALL            IL   TRAINED SPOTTER

            GOLFBALL SIZE HAIL LASTED 3 MINUTES...NEAR RT 30 AND
            BRIARCLIFF. ALSO SMALL 2-3 INCH BRANCHES DOWN.

0541 PM     HAIL             MONTGOMERY              41.73N 88.34W
06/12/2013  M1.50 INCH       KANE               IL   TRAINED SPOTTER

0542 PM     HAIL             NAPERVILLE              41.76N 88.15W
06/12/2013  M1.75 INCH       DUPAGE             IL   TRAINED SPOTTER

0544 PM     HAIL             AURORA                  41.77N 88.29W
06/12/2013  M1.00 INCH       KANE               IL   TRAINED SPOTTER

0544 PM     HAIL             4 SE AURORA             41.73N 88.24W
06/12/2013  M1.00 INCH       DUPAGE             IL   COCORAHS

0545 PM     HAIL             3 E SERENA              41.48N 88.67W
06/12/2013  M1.25 INCH       LA SALLE           IL   COCORAHS

0545 PM     HAIL             AURORA                  41.77N 88.29W
06/12/2013  E1.25 INCH       KANE               IL   TRAINED SPOTTER

0547 PM     HAIL             BOLINGBROOK             41.70N 88.08W
06/12/2013  M1.00 INCH       WILL               IL   TRAINED SPOTTER

            54 MPH WINDS

0549 PM     HAIL             NORTH AURORA            41.80N 88.33W
06/12/2013  M1.00 INCH       KANE               IL   PUBLIC

            EOLA RD. RELAYED BY SOCIAL MEDIA

0549 PM     HAIL             SHERIDAN                41.53N 88.69W
06/12/2013  E1.00 INCH       LA SALLE           IL   TRAINED SPOTTER

0550 PM     HEAVY RAIN       1 ENE SUGAR GROVE       41.78N 88.43W
06/12/2013  M1.29 INCH       KANE               IL   COCORAHS

            RAIN FELL IN PAST 50 MINUTES

0550 PM     TSTM WND DMG     W AURORA                41.77N 88.29W
06/12/2013                   KANE               IL   TRAINED SPOTTER

            2 INCH BRANCHES DOWN. JERICHO AND BERTRAM RDS

0555 PM     HAIL             5 S OSWEGO              41.63N 88.33W
06/12/2013  E1.00 INCH       KENDALL            IL   TRAINED SPOTTER

            NICKEL TO QUARTER SIZE HAIL...STILL GOING AT 600 PM.

0600 PM     HAIL             LOCKPORT                41.59N 88.05W
06/12/2013  M1.00 INCH       WILL               IL   TRAINED SPOTTER

            135TH AND SMITH RDS.

0600 PM     HAIL             HOFFMAN ESTATES         42.06N 88.14W
06/12/2013  M1.00 INCH       COOK               IL   TRAINED SPOTTER

            HIGGINS AND PLUM RDS

0620 PM     HAIL             6 NE MORRIS             41.43N 88.35W
06/12/2013  M1.00 INCH       GRUNDY             IL   TRAINED SPOTTER

            I-80 EAST BOUND REST AREA

0635 PM     HAIL             SAUK VILLAGE            41.49N 87.57W
06/12/2013  M1.75 INCH       COOK               IL   AMATEUR RADIO

            I-394 AND SAUK RD.

0635 PM     HAIL             CHICAGO                 41.88N 87.63W
06/12/2013  M1.00 INCH       COOK               IL   TRAINED SPOTTER

            W. WINNEMACK ST.

0637 PM     FUNNEL CLOUD     WILMINGTON              41.30N 88.16W
06/12/2013                   WILL               IL   TRAINED SPOTTER

            NEAR 55 AND LORENZO ROAD...TRAINED SPOTTER VIA EMA

0645 PM     HAIL             3 SSW MUNSTER           41.51N 87.52W
06/12/2013  E1.25 INCH       COOK               IL   COCORAHS

0645 PM     HAIL             GRIFFITH                41.52N 87.42W
06/12/2013  M1.00 INCH       LAKE               IN   TRAINED SPOTTER

            MEASURED 80 MPH WINDS

0653 PM     TSTM WND DMG     CROWN POINT             41.42N 87.36W
06/12/2013                   LAKE               IN   PUBLIC

            LARGE TREE BRANCHES DOWN. RELAYED VIA SOCIAL MEDIA

0653 PM     HAIL             GRIFFITH                41.52N 87.42W
06/12/2013  E1.00 INCH       LAKE               IN   PUBLIC

            VIA FACEBOOK

0655 PM     TSTM WND DMG     6 SE MERRILLVILLE       41.42N 87.24W
06/12/2013                   LAKE               IN   NWS STORM SURVEY

            MULTIPLE TREES UPROOTED AND SNAPPED AT BASE. LARGE
            BRANCHES DOWN ACROSS A WIDE AREA AROUND WINFIELD AND
            LAKES OF THE FOUR SEASONS. WINDS ESTIMATED AROUND 90-100
            MPH.

0703 PM     TSTM WND GST     PEOTONE                 41.33N 87.80W
06/12/2013  M61.00 MPH       WILL               IL   COCORAHS

            LARGE TREE LIMBS DOWN. CORNER OF 3RD AND CORNING AVE.
            1.65 INCHES OF RAIN.

0710 PM     TSTM WND DMG     CRETE                   41.45N 87.62W
06/12/2013                   WILL               IL   EMERGENCY MNGR

            TREE DOWN. MAIN AND EXCHANGE

0710 PM     HEAVY RAIN       PEOTONE                 41.33N 87.80W
06/12/2013  E0.52 INCH       WILL               IL   TRAINED SPOTTER

            RAIN FELL IN 8 MINUTES

0711 PM     HAIL             BOURBONNAIS             41.16N 87.88W
06/12/2013  M1.75 INCH       KANKAKEE           IL   CO-OP OBSERVER

0713 PM     HAIL             CRETE                   41.45N 87.62W
06/12/2013  M1.75 INCH       WILL               IL   EMERGENCY MNGR

            WAYNE AND NAOMA

0714 PM     HAIL             1 NNE BOURBONNAIS       41.18N 87.87W
06/12/2013  M1.00 INCH       KANKAKEE           IL   COCORAHS

0715 PM     HAIL             KANKAKEE                41.12N 87.86W
06/12/2013  M1.00 INCH       KANKAKEE           IL   TRAINED SPOTTER

            STATE RT 113 AND 2750 WEST ROAD. NUMBEROUS 3 TO 5 INCH
            DIAMETER TREE BRANCHES DOWN AT 3000 WEST RD AND RT 17.

0718 PM     HAIL             BOURBONNAIS             41.16N 87.88W
06/12/2013  E1.00 INCH       KANKAKEE           IL   PUBLIC

            JEFFERSON PARK ON NORTH SIDE OF BOURBONNAIS...VIA
            TWITTER.

0720 PM     TSTM WND GST     VALPARAISO              41.48N 87.05W
06/12/2013  E60.00 MPH       PORTER             IN   STORM CHASER

            LASTED ABOUT 5 MINUTES

0720 PM     HEAVY RAIN       NAPERVILLE              41.76N 88.15W
06/12/2013  M1.98 INCH       DUPAGE             IL   PUBLIC

            1/2 MILE NORTHEAST OF INTERSECTION OF RT 34 AND 47.
            MEASURED 1.98 INCHES OF RAIN...1.19 INCHES OF WHICH FELL
            IN PAST HOUR.

0722 PM     TSTM WND GST     1 SSW BEECHER           41.34N 87.62W
06/12/2013  M62.00 MPH       WILL               IL   MESONET

0725 PM     HEAVY RAIN       1 SSW HOBART            41.52N 87.27W
06/12/2013  M1.81 INCH       LAKE               IN   COCORAHS

            STORM TOTAL

0725 PM     FLOOD            SCHERERVILLE            41.49N 87.45W
06/12/2013                   LAKE               IN   AMATEUR RADIO

            VIADUCT AT RT 41 AND RT 30 HAS 2 FEET OF STANDING WATER

0728 PM     HAIL             MCHENRY                 42.34N 88.29W
06/12/2013  M1.00 INCH       MCHENRY            IL   TRAINED SPOTTER

0730 PM     TSTM WND DMG     MOMENCE                 41.16N 87.66W
06/12/2013                   KANKAKEE           IL   TRAINED SPOTTER

            TREES DOWN ON HILL ST. POWER LINES DOWN.

0730 PM     HAIL             BOURBONNAIS             41.16N 87.88W
06/12/2013  E1.75 INCH       KANKAKEE           IL   PUBLIC

0732 PM     TSTM WND DMG     CROWN POINT             41.42N 87.36W
06/12/2013                   LAKE               IN   AMATEUR RADIO

            HOUSE ROOF BLOWN OFF

0735 PM     HAIL             KANKAKEE                41.12N 87.86W
06/12/2013  M0.88 INCH       KANKAKEE           IL   TRAINED SPOTTER

0745 PM     HEAVY RAIN       3 E LINCOLN HILLS       41.47N 87.04W
06/12/2013  M1.07 INCH       PORTER             IN   COCORAHS

            RAIN IN PAST 30 MINUTES

0748 PM     HAIL             MANTENO                 41.25N 87.84W
06/12/2013  M1.00 INCH       KANKAKEE           IL   TRAINED SPOTTER

0750 PM     TORNADO          5 NW MANTENO            41.30N 87.90W
06/12/2013                   WILL               IL   NWS STORM SURVEY

            A NATIONAL WEATHER SERVICE STORM SURVEY DETERMINED AN
            EF-0 TORNADO WITH MAXIMUM WINDS AROUND 85 MPH MOVED FOR
            ONE QUARTER OF A MILE TO THE SOUTHEAST. MAXIMUM WIDTH WAS
            ESTIMATED TO BE AROUND 50 YARDS. THE TORNADO COLLAPSED A
            BARN KILLING A HORSE. THE SCAR WAS VISIBLE BY AN AERIAL
            PHOTO. TIME ESTIMATED PER RADAR.

0755 PM     HEAVY RAIN       5 NW JOLIET             41.58N 88.19W
06/12/2013  M1.96 INCH       WILL               IL   COCORAHS

0800 PM     HEAVY RAIN       4 NE LISBON             41.52N 88.42W
06/12/2013  M2.31 INCH       KENDALL            IL   COCORAHS

0800 PM     HEAVY RAIN       2 NNE JOLIET            41.55N 88.11W
06/12/2013  M1.72 INCH       WILL               IL   COCORAHS

            1.12 INCHES FELL IN PAST 20 MINUTES

0802 PM     TSTM WND DMG     KANKAKEE                41.12N 87.86W
06/12/2013                   KANKAKEE           IL   TRAINED SPOTTER

            NUMEROUS LARGE TREES AND BRANCHES DOWN.

0804 PM     HAIL             MAZON                   41.24N 88.42W
06/12/2013  E1.00 INCH       GRUNDY             IL   LAW ENFORCEMENT

0807 PM     TSTM WND DMG     MORRIS                  41.37N 88.43W
06/12/2013                   GRUNDY             IL   LAW ENFORCEMENT

            ROD AND GUN CLUB ROAD. 16 INCH DIAMETER TREE UPROOTED.

0819 PM     TSTM WND DMG     LOWELL                  41.29N 87.41W
06/12/2013                   LAKE               IN   AMATEUR RADIO

            POWER LINES DOWN NEAR I-65 AND RT 27. TIME ESTIMATED.

0820 PM     HEAVY RAIN       YORKVILLE               41.64N 88.45W
06/12/2013  M2.36 INCH       KENDALL            IL   CO-OP OBSERVER

0820 PM     TSTM WND DMG     7 E LOWELL              41.29N 87.28W
06/12/2013                   LAKE               IN   NWS STORM SURVEY

            MULTIPLE HIGH TENSION WIRES DOWN. ROOFS OFF BARNS. SMALL
            GARAGE DESTROYED. SIGNIFICANT DAMAGE TO TWO METAL SILOS.
            TREES BLOCKING ROADS. WINDS ESTIMATED AROUND 90-100 MPH.

0822 PM     TSTM WND GST     2 SSW LOWELL            41.27N 87.43W
06/12/2013  M63.00 MPH       LAKE               IN   MESONET

0825 PM     TSTM WND GST     BEAVERVILLE             40.95N 87.65W
06/12/2013  E70.00 MPH       IROQUOIS           IL   PUBLIC

            RELAYED VIA SOCIAL MEDIA

0830 PM     HEAVY RAIN       CHANNAHON               41.43N 88.22W
06/12/2013  M2.32 INCH       WILL               IL   NWS EMPLOYEE

0830 PM     MARINE TSTM WIND 4 NE CHICAGO            41.92N 87.57W
06/12/2013  M45.00 MPH       LMZ741             IL   C-MAN STATION

            MEASURED GUST TO 45 MPH AT THE HARRISON DEVER CRIB.

0830 PM     TSTM WND GST     MOUNT AYR               40.95N 87.30W
06/12/2013  M69.00 MPH       NEWTON             IN   TRAINED SPOTTER

            2 TO 8 INCH BRANCHES DOWN.

0835 PM     HEAVY RAIN       4 NNW COAL CITY         41.34N 88.30W
06/12/2013  M1.67 INCH       GRUNDY             IL   COCORAHS

            1.57 INCHES FELL IN 45 MINUTES

0845 PM     FLASH FLOOD      KANKAKEE                41.12N 87.86W
06/12/2013                   KANKAKEE           IL   EMERGENCY MNGR

            EVERY UNDERPASS AND NUMEROUS STREETS ARE FLOODED
            THROUGHOUT KANKAKEE...BRADLEY...AND BOURBONNAIS. TIME IS
            ESTIMATED.

0853 PM     TSTM WND DMG     5 ESE WATSEKA           40.75N 87.64W
06/12/2013                   IROQUOIS           IL   PUBLIC

            HALF DOZEN POWER POLES BLOWN DOWN APPROX 1 MILE SOUTH OF
            RT 24 HALFWAY BETWEEN WATSEKA AND SHELDON. TIME
            ESTIMATED. VIA TWITTER

0855 PM     HEAVY RAIN       KANKAKEE                41.12N 87.86W
06/12/2013  M1.84 INCH       KANKAKEE           IL   AWOS

            1.84 INCHES MEASURED IN THE PAST 60 MINUTES.

0900 PM     HEAVY RAIN       ENE PEOTONE             41.33N 87.79W
06/12/2013  M2.07 INCH       WILL               IL   COCORAHS

            RAIN IN PAST 2 HOURS

0930 PM     TSTM WND DMG     FOWLER                  40.62N 87.32W
06/12/2013                   BENTON             IN   PUBLIC

            SIDING DAMAGE TO HOME. RELAYED VIA SOCIAL MEDIA.

0949 PM     HEAVY RAIN       N REMINGTON             40.77N 87.15W
06/12/2013  M1.44 INCH       JASPER             IN   COCORAHS

            RAIN FELL IN PAST HOUR

1121 PM     FLOOD            OTTAWA                  41.35N 88.84W
06/12/2013                   LA SALLE           IL   TRAINED SPOTTER

            WATER PONDING ON SUPERIOR ST AND WASHINGTON ST IN OTTAWA.
            6-7 INCHES OF WATER.

1230 AM     HEAVY RAIN       ENE PEOTONE             41.33N 87.80W
06/13/2013  M2.35 INCH       WILL               IL   COCORAHS

            STORM TOTAL 2.35 INCHES.


&&

$$