Alert archive / Illinois / Tornado Warnings in 2015

Tornado Warning 18, NWS Chicago, IL

June 15, 2015Kankakee County, Will County, Illinois

NWS Chicago, IL issued this tornado warning at Jun 15, 2015, 7:42 PM CDT for Kankakee County, Will County, Illinois. It was in force for 23 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Jun 15, 2015, 7:42 PM CDT (00:42 UTC)
Expired
Jun 15, 2015, 8:05 PM CDT
In force
23 min
Issued by
NWS Chicago, IL
Area
Storm-based polygon
Tornado
Observed
Hail
0.0 in

Counties Kankakee County, IL, Will County, IL

The radar

The Chicago radar (KLOT), 41 km from the middle of the area, began a volume at 00:42 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this tornado warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 0.7 hours before the alert went out and 142 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Lincoln, IL at 00:00Z on 2015-06-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 125 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Lincoln, IL at 00:00Z on 2015-06-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 126 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
125 J/kg
Mixed-layer CIN
-79 J/kg
Mixed-layer LCL
1025 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
126 m²/s²
0-3 km storm-relative helicity
127 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.9

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

652 
WFUS53 KLOT 160042
TORLOT
ILC091-197-160115-
/O.NEW.KLOT.TO.W.0018.150616T0042Z-150616T0115Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
742 PM CDT MON JUN 15 2015

THE NATIONAL WEATHER SERVICE IN CHICAGO  HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHERN WILL COUNTY IN NORTHEASTERN ILLINOIS... 
  NORTH CENTRAL KANKAKEE COUNTY IN NORTHEASTERN ILLINOIS...

* UNTIL 815 PM CDT
    
* AT 742 PM CDT...A TORNADO PRODUCING STORM WAS LOCATED NEAR
  MANTENO...MOVING EAST AT 30 MPH.

  HAZARD...DAMAGING TORNADO. 

  SOURCE...RADAR CONFIRMED TORNADO. 

  IMPACT...FLYING DEBRIS WILL BE DANGEROUS TO THOSE CAUGHT WITHOUT 
           SHELTER. MOBILE HOMES WILL BE DAMAGED OR DESTROYED. 
           DAMAGE TO ROOFS...WINDOWS AND VEHICLES WILL OCCUR.  TREE 
           DAMAGE IS LIKELY. 

* THIS TORNADIC STORM WILL BE NEAR...
  MANTENO AROUND 755 PM CDT.
  PEOTONE AROUND 800 PM CDT.

THIS INCLUDES... WILL COUNTY FAIRGROUNDS.
 
INCLUDING THE FOLLOWING INTERSTATE...
 I-57 BETWEEN MILE MARKERS 322 AND 328.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

TO REPEAT...A TORNADO IS ON THE GROUND. TAKE COVER NOW! MOVE TO A
BASEMENT OR AN INTERIOR ROOM ON THE LOWEST FLOOR OF A STURDY
BUILDING. AVOID WINDOWS. IF YOU ARE OUTDOORS...IN A MOBILE HOME...OR
IN A VEHICLE...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 4128 8794 4134 8792 4134 8768 4120 8771
TIME...MOT...LOC 0042Z 274DEG 25KT 4131 8793 

TORNADO...OBSERVED
HAIL...0.00IN

$$

IZZI
2 follow-up statements
159 
WWUS53 KLOT 160054
SVSLOT

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
754 PM CDT MON JUN 15 2015

ILC091-197-160115-
/O.CON.KLOT.TO.W.0018.000000T0000Z-150616T0115Z/
WILL IL-KANKAKEE IL-
754 PM CDT MON JUN 15 2015

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 815 PM CDT FOR
SOUTHEASTERN WILL AND NORTH CENTRAL KANKAKEE COUNTIES...
    
AT 753 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO
WAS LOCATED JUST SOUTH OF PEOTONE AND MOVING EAST AT 40 MPH.

HAZARD...TORNADO. 

SOURCE...RADAR INDICATED ROTATION. 

IMPACT...FLYING DEBRIS WILL BE DANGEROUS TO THOSE CAUGHT WITHOUT 
         SHELTER. MOBILE HOMES WILL BE DAMAGED OR DESTROYED. DAMAGE 
         TO ROOFS...WINDOWS AND VEHICLES WILL OCCUR.  TREE DAMAGE IS 
         LIKELY. 

THIS TORNADIC THUNDERSTORM WILL REMAIN OVER MAINLY RURAL AREAS OF
SOUTHEASTERN WILL AND NORTH CENTRAL KANKAKEE COUNTIES.

THIS INCLUDES... WILL COUNTY FAIRGROUNDS.
 
INCLUDING THE FOLLOWING INTERSTATE...
 I-57 BETWEEN MILE MARKERS 322 AND 328.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! MOVE TO A BASEMENT OR AN INTERIOR ROOM ON THE LOWEST
FLOOR OF A STURDY BUILDING. AVOID WINDOWS. IF YOU ARE OUTDOORS...IN A
MOBILE HOME...OR IN A VEHICLE...MOVE TO THE CLOSEST SUBSTANTIAL
SHELTER AND PROTECT YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 4126 8788 4134 8783 4134 8768 4120 8771
TIME...MOT...LOC 0053Z 282DEG 34KT 4131 8776 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

IZZI
928 
WWUS53 KLOT 160105
SVSLOT

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
805 PM CDT MON JUN 15 2015

ILC091-197-160114-
/O.CAN.KLOT.TO.W.0018.000000T0000Z-150616T0115Z/
WILL IL-KANKAKEE IL-
805 PM CDT MON JUN 15 2015

...THE TORNADO WARNING FOR SOUTHEASTERN WILL AND NORTH CENTRAL
KANKAKEE COUNTIES IS CANCELLED...
    
THE TORNADIC THUNDERSTORM WHICH PROMPTED THE WARNING HAS MOVED OUT 
OF THE WARNED AREA...THEREFORE THE WARNING HAS BEEN CANCELLED. RADAR 
DOES STILL INDICATE SOME WEAK ROTATION WITH THE STORM AND IT BE 
CLOSELY MONITORED FOR ANY SIGNS OF INTENSIFICATION. 

LAT...LON 4126 8788 4134 8783 4134 8768 4120 8771
TIME...MOT...LOC 0102Z 274DEG 25KT 4130 8768 

$$

IZZI

What forecasters said that day

The local office's own words before this tornado warning went out, 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 this tornado warning went out at Jun 15, 7:17 PM CDT, 25 minutes earlier.

Area forecast discussion, Jun 15, 7:17 PM CDT, 25 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
717 PM CDT MON JUN 15 2015

.SHORT TERM...
255 PM CDT

THIS AFTERNOON AND TONIGHT...

ATMOSPHERE REMAINS REMARKABLY FAVORABLE FOR VERY HEAVY RAINFALL
WITH VERY HIGH FREEZING LEVELS AND RECORD/NEAR RECORD HIGH PWATS
ALLOWING FOR WARM RAIN PROCESSES (TROPICAL-LIKE) TO DOMINATE. THE
RESULT THIS MORNING HAS ALREADY BEEN THUNDERSTORMS WITH EXTREME
RAIN RATES...IN SOME CASES OVER AN INCH IN LESS THAN 20 MINUTES.
ATMOSPHERE WILL CHANGE VERY LITTLE THROUGH THE AFTERNOON AND INTO
THIS EVENING...SO CONTINUE TO BE VERY CONCERNED ABOUT LOCALIZED
VERY HEAVY RAINFALL AND THE POTENTIAL FOR FLASH FLOODING. GIVEN
THE EFFICIENCY OF RAINFALL PRODUCTION AND EXTREME RAINFALL
RATES...ANY TRAINING OF THUNDERSTORM ACTIVITY COULD RESULT IN A
SERIOUS FLASH FLOOD SITUATION DEVELOPING IN SOME LOCATIONS THIS
AFTERNOON INTO THIS EVENING. THE AREAS MOST SUSCEPTIBLE TO THIS
WOULD BE AREAS THAT HAVE ALREADY SEEN FLOODING IN RECENT DAYS
WHERE THE GROUND CAN TAKE NO MORE WATER AND ALSO IN URBANIZED
AREAS THAT CAN NEVER TOLERATE EXTREME RAINFALL RATES.

VISIBLE SATELLITE IMAGERY LATER THIS MORNING SHOWS SOME POCKETS OF
FILTERED SUNSHINE ALLOWING TEMPERATURES TO WARM INTO THE LOW/MID 80S
WITH DEWPOINTS IN THE LOW TO MID 70S. MODIFYING ILX'S MORNING
SOUNDINGS FOR CURRENT SURFACE OBS YIELD MLCAPE VALUES OVER 1000
J/KG NOW WITH NO REMAINING CONVECTIVE INHIBITION AND PWATS NEARING
2 INCHES. AREA VWPS SHOW DEEP LAYER OF 30-40KT WEST-SOUTHWESTERLY
WINDS FROM 850-500MB...WHICH IS RESULTING IN EFFECTIVE DEEP LAYER
SHEAR VALUES OF AROUND 30KT. WHILE DEEP LAYER SHEAR AND VERY WEAK
LAPSE RATES ARE NOT PARTICULARLY FAVORABLE FOR SEVERE WEATHER...WE
HAVE ALREADY SEEN SOME TRANSIENT OUTFLOW DOMINANT HP SUPERCELL-ISH
CONVECTION THIS MORNING. WITH SLOWLY BUILDING INSTABILITY...THE
THREAT DOES EXIST FOR SOME ADDITIONAL WET MICROBURSTS AND SMALL
BOWING SEGMENTS TO RESULT IN AN ISOLATED WIND DAMAGE THREAT THIS
AFTERNOON AND PERHAPS EARLY THIS EVENING.

ONE SMALL SCALE BOWING SEGMENT TRACKED ACROSS LEE...SOUTHERN
DEKALB/KANE COUNTIES LATE THIS MORNING AND HAS LAID OUT AN EAST-WEST
OUTFLOW BOUNDARY IN VICINITY OF I-80. SHOULD THIS OUTFLOW OR ANY
OTHER BECOME A FOCUS FOR CONVECTIVE DEVELOPMENT THIS AFTERNOON THE
THREAT OF TRAINING AND A MORE SUBSTANTIAL FLASH FLOOD THREAT WILL
GROW.

NOTE TO WSR-88D USERS: THE VERY HIGH EFFICIENCY OF RAIN IN THE
STORMS AND LACK OF HAIL IS RESULTING IN LEGACY PRECIPITATION
ESTIMATES ON THE RADAR TO BE RUNNING TOO LOW. USE SUCH PRODUCTS WITH
CAUTION...WE ARE UTILIZING THE DUAL POL RADAR ESTIMATES WHICH HAVE
BEEN PERFORMING MUCH BETTER IN THIS ENVIRONMENT.

IZZI

&&

.LONG TERM...
255 PM CDT

TUESDAY THROUGH MONDAY...

PRIMARY CONCERN FOR THE LONGER TERM FORECAST PERIOD WILL BE TRYING
TO DETERMINE WHEN AND HOW LONG THERE WILL BE SOME RELIEF FROM THE
SEEMINGLY PERSISTENT HEAVY RAIN POTENTIAL IN THE QUASI-TROPICAL
AIRMASS THAT HAS PERSISTED OVER THE REGION.  THE GENERAL LARGE SCALE
PATTERN WILL BE NEARLY ZONAL ACROSS THE NRN CONUS ALLOWING FOR A
SERIES OF SHORTWAVES TO TRACK ACROSS THE AREA...BRINGING PERIODIC
CHANCES FOR SHOWERS AND THUNDERSTORMS FOR THE LONGER TERM FORECAST
PERIOD.

MUCH OF THE REGION SHOULD SEE DRY WEATHER AS HIGH PRESSURE BUILDS
ACROSS THE UPPER MISSISSIPPI VALLEY AND INTO THE GREAT LAKES REGION.
 THE LEADING EDGE OF THE POLAR AIRMASS SHOULD SPREAD INTO NRN IL BY
EARLY TOMORROW AFTERNOON...USHERING IN LOWER DEWPOINTS AND FORCING
THE QUASI-TROPICAL AIRMASS TO THE SOUTH.  HOWEVER...THIS WILL ALSO
TURN WINDS NLY-NELY...BRINGING COOLER AIR ACROSS THE
AREA...ESPECIALLY ALONG THE LAKEFRONT.  TEMPERATURES TOMORROW SHOULD
TOP OUT IN THE UPPER 70S TO AROUND 80F...EXCEPT ALONG THE
LAKEFRONT...WHERE TEMPERATURES SHOULD ONLY REACH THE MIDDLE 60S.
ALSO...THERE IS A CHANCE FOR SOME LOW STRATUS AND FOG MOVING A SHORT
DISTANCE INLAND FROM THE LAKE.  ANY CHANCES FOR PCPN FOR THE AREA
SHOULD BE CONFINED TO LOCATIONS SOUTH OF A LINE ROUGHLY FROM
RENSSELAER TO PONTIAC.  BY TUESDAY NIGHT...PCPN CHANCES SHOULD BEGIN
TO CREEP BACK NORTH AS THE HIGH MOVES OFF TO THE EAST AND SFC
TROUGHING DEVELOPS OVER THE WESTERN PLAINS.  THE POLAR HIGH MOVING
OVER THE ERN GREAT LAKES WILL GRADUALLY MERGE WITH THE SUB-TROPICAL
HIGH OVER THE SRN CONUS...FORCING THE RETURN FLOW OF MOISTURE FRONT
THE WRN GLFMEX TO TAKE A LONGER PATH THROUGH THE CENTRAL
PLAINS...BUT WITH A WARM FRONT DEVELOPING ACROSS NRN MO THROUGH THE
OHIO VALLEY WILL SET UP ADEQUATE ISENTROPIC LIFT TO GENERATE SOME
ELEVATED CONVECTION.  THE HIGHEST POPS SHOULD REMAIN OVER THE SRN
PORTIONS OF THE CWA THROUGH THE NIGHT...SOUTH OF THE IL/KANKAKEE
RIVERS...WITH A LOWER CHANCE FOR SOME SCT SHRA/ISOLD TS POSSIBLE
SPREADING NORTH OF THE I-80 CORRIDOR.  BY WEDNESDAY AFTERNOON...THE
REGION WILL BE BACK IN THE WARM/MOIST AIRMASS WITH SFC DEWPOINTS
RISING BACK INTO THE LOWER 70S. THE ONE ELEMENT THAT WOULD LIMIT THE
COVERAGE OF TS OVER THE REGION ON WEDNESDAY WILL BE A SPLIT FLOW
WITH A NRN STREAM SHORTWAVE HELPING TO FOCUS PCPN OVER NRN WI AND A
SRN STREAM SHORTWAVE FOCUSING ACTIVITY OVER CNTRL IL/IN.
HOWEVER...THERE IS ENOUGH OF A SPREAD IN MODEL SOLUTIONS WITH
RESPECT TO THESE FEATURES THAT SOME PCPN CANNOT BE RULED OUT OVER
NRN IL/IN...SO HAVE PLASTERED CHANCE POPS OVER THE NRN CWA AND THE
LIKELY TO CATEGORICAL POPS TO THE SOUTH.

PERIODIC CHANCES FOR SHOWERS AND THUNDERSTORMS WILL ALMOST BE A
DAILY OCCURRENCE THROUGH THE REMAINDER OF THE EXTENDED FORECAST
PERIOD.  THE ONE BRIEF PERIOD THAT LOOKS TO BE DRY WILL BE THURSDAY
NIGHT AS ANOTHER POLAR AIRMASS SPREADS ACROSS THE UPPER MISSISSIPPI
VALLEY AND GREAT LAKES REGIONS.  THIS DRY PERIOD SHOULD BE
RELATIVELY BRIEF AS THE UPPER LEVEL PATTERN WILL REMAIN RELATIVELY
ZONAL ACROSS THE NRN CONUS.  WHILE THE LONGER RANGE GUIDANCE REMAINS
CONSISTENT ON THE LARGE SCALE PATTERN...THE TYPICAL VARIANCES IN
SHORTWAVE TIMING INTRODUCES THE ELEMENTS OF UNCERTAINTY TO THE
FORECAST...WITH THE MAIN TREND BEING FOR PERIODS OF SHOWERS AND
THUNDERSTORMS FROM FRIDAY...THROUGH THE WEEKEND AND INTO EARLY NEXT
WEEK.  THERE WILL BE DRY PERIODS AS WELL...AND WHILE THE FORECAST
SOUNDS LIKE A WASHOUT FOR THE ENTIRE PERIOD...THERE SHOULD BE
PERIODS OF DRY WEATHER AS WELL.  IT IS JUST THE TIMING THAT IS THE
BIGGEST QUESTION MARK.

KREIN

&&

.AVIATION...

//ORD AND MDW CONCERNS...UPDATED 00Z...

* MULTI-HOUR TSRA WITH TEMPORARY IFR CONDITIONS LIKELY THIS
  AFTERNOON INTO THE EVENING. NUMEROUS TO WIDESPREAD COVERAGE OF
  STORMS IN THE TRACON AREA FAVORED.

* VARIABLE WINDS NEAR TSRA...WITH GUSTS TO 30 KT PSBL AT KMDW IN
  THE NEXT HOUR OR SO.

* LOWER MVFR/IFR VSBY IN RAIN/EMBEDDED TS THROUGH 3Z.

* WINDS BECOMING NORTHEAST AND INCREASING ABOUT 10KT NEAR/AFTER
  SUNRISE TUESDAY AND REMAINING SO MOST OF THE DAY.

* LOW MVFR CIGS LATE TONIGHT AND TUESDAY MORNING.

KMD

//DISCUSSION...UPDATED 00Z...

BACK EDGE OF THE PRECIPIATION IS NOW EAST OF THE MISSISSIPPI RIVER
NORTH OF THE INTERSTATE 80 CORRIDOR. THUNDER IS MOST NUMEROUS
ALONG THE I-80 CORRIDOR AND SOUTHWARD...WITH THE PRECIP MORE JUST
PLAIN RAIN WITH EMBEDDED THUNDER FARTHER NORTH. EXPECT THIS TO
CONTINUE FOR A FEW MORE HOURS. MODERATE RAINFALL IS EXPECTED AS
THE LIGHTNING IS DECREASING WITH LOW MVFR TO IFR VISIBILITY...AND
THE TREND IS FOR RAINFALL TO DECREASE IN INTENSITY SOME WITH TS
LESS LIKELY AT MOST OF THE TERMINALS AFTER 2-3Z.

WINDS ARE SW AHEAD OF A COLD FRONT THEN TRENDING NW AT THE
CHICAGOLAND TERMINALS AROUND 3-4Z. WINDS THEN BACK TO NE OVERNIGHT
INTO TUESDAY MORNING...THEN INCREASE ABOVE 10 KT THROUGH THE DAY
TUESDAY. FORECAST SOUNDINGS SUGGEST A PERIOD OF LOWER CLOUDS LATE
TONIGHT INTO TUESDAY MORNING...POSSIBLY HANGING ON THROUGH MIDDAY
CLOSER TO THE LAKE AND POSSIBLY AFFECTING MDW INTO THE EARLY
AFTERNOON.

KMD

//ORD AND MDW CONFIDENCE...UPDATED 00Z...

* HIGH THAT RA WITH OCCASIONAL TS WILL IMPACT THE TERMINALS FOR
  THE NEXT FEW HOURS.

* MEDIUM-HIGH ON WINDS REMAINING FROM THE WEST THROUGH THIS
  EVENING APART FROM NEAR STORMS.

* MEDIUM-HIGH IN WIND SHIFT TIMING TO NORTH-NORTHEAST.

* LOW ON EXTENT AND DURATION OF LOW CIGS ON TUESDAY MORNING.

* MEDIUM-HIGH ON WIND DIRECTION AND SPEED TUESDAY.

KMD

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

WEDNESDAY...SCHC OF TSRA. SOUTHEAST WINDS TRENDING SOUTH.
THURSDAY...CHANCE OF TSRA. WEST/NORTHWEST WINDS.
FRIDAY...SLIGHT CHANCE OF TSRA. EAST WINDS.
SATURDAY-SUNDAY...CHANCE OF TSRA. SOUTHWEST WINDS.

KMD

&&

.MARINE...
305 PM CDT

THE PATTERN WILL REMAIN STEADILY PROGRESSIVE THROUGH THE
PERIOD...WITH PERIODIC CHANCES FOR THUNDERSTORMS AND A COUPLE
FRONTAL PASSAGES THAT WILL BRING CHANGES TO WIND DIRECTION.

FOR THE REMAINDER OF THIS AFTERNOON AND INTO EARLY THIS
EVENING...SWLY FLOW AHEAD OF A COLD FRONT WILL CONTINUE TO DRAW
WARM...MOIST AIR ACROSS THE COLDER LAKE WATERS...KEEPING AREAS OF
DENSE FOG OVER THE LAKE. THE FIRST FRONTAL PASSAGE WILL OCCUR
OVERNIGHT TONIGHT...VEERING WINDS TO NLY OVER MUCH OF THE OPEN
WATERS AND MORE NELY OVER THE NEARSHORE WATERS. THE COLD FRONT IS
RELATIVELY WEAK AND DO NOT EXPECT MUCH OF AN INCREASE IN WINDS
WITH THE FROPA...10-15 TO 10-20 KT. HIGH PRESSURE WILL BUILD IN
BEHIND THE FRONT...ALLOWING WINDS TO DROP OFF...BEFORE BECOMING
MORE SELY-SLY AS THE HIGH MOVES OFF TO THE EAST ON WEDNESDAY. A
WEAK GRADIENT WILL SET UP ACROSS THE GREAT LAKES UNTIL THE NEXT
WEAK COLD FRONT MOVES ACROSS THE LAKE. RELATIVELY WEAK WINDS BUT
PERIODS OF SHOWERS OR THUNDERSTORMS ARE LIKELY FOR THE LAKE
THROUGH THURSDAY WITH THE NEXT FROPA EXPECTED THURSDAY NIGHT OR
EARLY FRIDAY. ANOTHER AREA OF HIGH PRESSURE WILL MOVE ACROSS THE
LAKES FRIDAY AND PUSHING OFF TO NEW ENGLAND FRIDAY NIGHT. THIS
WILL THEN SET UP ANOTHER ROUND OF ACTIVE WEATHER. THE LONGER RANGE
MODEL GUIDANCE SUGGESTS THAT AS THE HIGH MOVES OFF THE NEW ENGLAND
COAST SATURDAY...A DEEPER LOW PRESSURE SYSTEM WILL APPROACH THE
UPPER MISSISSIPPI VALLEY AND WESTERN GREAT LAKES...SETTING UP A
STRONGER SLY GRADIENT OVER THE LAKE AND WINDS COULD INCREASE TO 20
TO 25 KT.

KREIN

&&

.LOT WATCHES/WARNINGS/ADVISORIES...
IL...FLASH FLOOD WATCH...ILZ003-ILZ004-ILZ005-ILZ006-ILZ008-ILZ010-
     ILZ011-ILZ012-ILZ013-ILZ014-ILZ020 UNTIL 1 AM TUESDAY.

     FLASH FLOOD WATCH...ILZ019-ILZ021-ILZ022-ILZ023-ILZ032-ILZ033-
     ILZ039 UNTIL 4 AM TUESDAY.

IN...FLASH FLOOD WATCH...INZ001-INZ002-INZ010-INZ011-INZ019 UNTIL 4
     AM TUESDAY.

LM...NONE.
&&

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

FOLLOW US ON FACEBOOK...TWITTER...AND YOUTUBE AT:
WWW.FACEBOOK.COM/NWSCHICAGO
WWW.TWITTER.COM/NWSCHICAGO
WWW.YOUTUBE.COM/NWSCHICAGO
Hazardous weather outlook, Jun 15, 3:39 PM CDT, 4 hours 3 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
339 PM CDT MON JUN 15 2015

ILZ003>006-008-010>014-019>023-032-033-039-INZ001-002-010-011-019-
162045-
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-
339 PM CDT MON JUN 15 2015

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

.DAY ONE...TONIGHT.

  WEATHER HAZARDS EXPECTED:

  THUNDERSTORMS...SOME OF WHICH MAY PRODUCE:

   FREQUENT CLOUD TO GROUND LIGHTNING.
   VERY HEAVY RAINFALL AND FLASH FLOODING.
   ISOLATED WINDS GUSTS ABOVE 60 MPH.

  AREAS AFFECTED AND TIMING:

   SCATTERED THUNDERSTORMS WILL LIKELY GROW MORE NUMEROUS ACROSS
   THE OUTLOOK AREA THROUGH THIS EVENING. THE MAIN CONCENTRATION
   OF THUNDERSTORMS WILL GRADUALLY SHIFT SOUTH OVERNIGHT AND
   END NORTH OF INTERSTATE 80 DURING THE PRE-DAWN HOURS.

  DISCUSSION:

   THUNDERSTORMS WILL BECOME MORE NUMEROUS THROUGH THE EVENING AS
   A SLOW MOVING FRONT APPROACHES THE AREA. THE ATMOSPHERE IS
   EXTREMELY MOIST AND ANY STORMS THAT FORM WILL HAVE THE
   POTENTIAL TO PRODUCE TORRENTIAL DOWNPOURS...POTENTIALLY
   UPWARDS OF 2 INCHES IN AN HOUR OR LESS. IN ADDITION TO THE
   HEAVY RAIN...WHICH MAY RESULT IN LOCALIZED FLASH FLOODING...A
   COUPLE OF THE STORMS COULD PRODUCE LOCALIZED WIND GUSTS OVER
   60 MPH.

  IN ADDITION...PORTIONS OF THE IROQUOIS...KANKAKEE...AND
  ILLINOIS RIVERS WILL REMAIN IN FLOOD.

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

THERE WILL BE PERIODIC CHANCES OF THUNDERSTORMS TUESDAY THROUGH
THE WEEKEND.

PORTIONS OF THE IROQUOIS...KANKAKEE...AND ILLINOIS RIVERS WILL
REMAIN IN FLOOD.

.SPOTTER INFORMATION STATEMENT...

DUE TO THE ISOLATED NATURE OF THE SEVERE WEATHER THREAT...SPOTTER
ACTIVATION IS NOT ANTICIPATED THROUGH TONIGHT...HOWEVER ANY
OBSERVATIONS OF FLOODING OR MEASURED HEAVY RAIN TOTALS WOULD BE
APPRECIATED.

&&

LMZ740>745-162045-
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-
339 PM CDT MON JUN 15 2015

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

.DAY ONE...TONIGHT.

PERIODS OF THUNDERSTORMS ARE EXPECTED THROUGH LATE TONIGHT. SOME
OF THE STORMS MAY PRODUCE GUSTS UP TO 35 KNOTS.

AREAS OF FOG ARE POSSIBLE THROUGH THIS EVENING.

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

THERE ARE PERIODIC CHANCES OF THUNDERSTORMS LATE TUESDAY NIGHT
THROUGH THE WEEKEND.

&&

LMZ080-261-362-364-366-563-565-567-669-671-673-675-777-779-868-
870-872-874-876-878-162045-
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-
339 PM CDT MON JUN 15 2015

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

.DAY ONE...TONIGHT.

PERIODS OF THUNDERSTORMS ARE EXPECTED ACROSS MUCH OF THE LAKE
THROUGH LATE TONIGHT.

AREAS OF DENSE FOG ARE LIKELY INTO EARLY THIS EVENING.

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

THERE ARE PERIODIC CHANCES OF THUNDERSTORMS WEDNESDAY THROUGH THE
WEEKEND.

&&

KREIN

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

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

In the hours before

Local storm report, Jun 15, 6:23 PM CDT, 1 hour 19 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
623 PM CDT MON JUN 15 2015

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

0615 PM     FLASH FLOOD      WEST CHICAGO            41.89N 88.22W
06/15/2015                   DUPAGE             IL   TRAINED SPOTTER

            3 FT OF STANDING WATER. ANN ST, WEST OF JOLIET ST. NEAR
            COMMUNITY HIGH SCHOOL.

&&

AKREIN
Local storm report, Jun 15, 6:38 PM CDT, 1 hour 4 minutes before
PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
638 PM CDT MON JUN 15 2015

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

1000 AM     HEAVY RAIN       1 SW DIXON              41.84N 89.50W
06/15/2015  M0.96 INCH       LEE                IL   COCORAHS

            RAIN FELL IN 30 MINUTES. THUNDER HEARD.

1031 AM     HEAVY RAIN       MORRIS                  41.37N 88.43W
06/15/2015  M1.03 INCH       GRUNDY             IL   EMERGENCY MNGR

            RAINFALL REPORT FROMT THE GURNDY COUNTY EMA. 1.03 INCHES
            WITHIN 30 MINUTES.

1042 AM     HEAVY RAIN       4 NNW COAL CITY         41.34N 88.31W
06/15/2015  M1.27 INCH       GRUNDY             IL   NWS EMPLOYEE

            ONE INCH IN 20 MINUTES

1045 AM     HEAVY RAIN       4 NNW COAL CITY         41.33N 88.31W
06/15/2015  M1.51 INCH       GRUNDY             IL   COCORAHS

            RAIN FELL IN AN HOUR.

1045 AM     FLASH FLOOD      MORRIS                  41.37N 88.43W
06/15/2015                   GRUNDY             IL   EMERGENCY MNGR

            SEVERAL ROADS IN TOWN WHERE WATER HAD RECEDED BECAME
            FLOODED AGAIN

1045 AM     HEAVY RAIN       4 NNW COAL CITY         41.34N 88.31W
06/15/2015  M1.49 INCH       GRUNDY             IL   NWS EMPLOYEE

            FELL IN 35 MINUTES.

1115 AM     FLASH FLOOD      WILMINGTON              41.30N 88.16W
06/15/2015                   WILL               IL   911 CALL CENTER

            SEVERAL ROADS FLOODED AND BEING CLOSED INCLUDING...ROUTE
            53 AT KANKAKEE STREET...MAIN AND BALTIMORE...AND MAIN AND
            RIVER STREET.

1125 AM     FLASH FLOOD      PEOTONE                 41.33N 87.80W
06/15/2015                   WILL               IL   CO-OP OBSERVER

            1.26 INCHES BETWEEN 1058 AM AND 1125 AM WITH 1 INCH
            FALLING IN 14 MINUTES. STREETS ARE FLOODED ON THE
            OUTSKIRTS OF TOWN.

1140 AM     HEAVY RAIN       JOLIET                  41.53N 88.12W
06/15/2015  M0.84 INCH       WILL               IL   CO-OP OBSERVER

            RAIN FELL IN AN HOUR. AT THE LOCK AND DAM.

1200 PM     HEAVY RAIN       5 SSE MANHATTAN         41.35N 87.96W
06/15/2015  M3.26 INCH       WILL               IL   MESONET

            MEASURED AT WILTON CENTER IN TWO HOUR PERIOD ENDING AT 12
            PM

0102 PM     HEAVY RAIN       3 SW MIDWAY AIRPORT     41.75N 87.79W
06/15/2015  M0.51 INCH       COOK               IL   CO-OP OBSERVER

            RAINFALL FELL IN ABOUT 4 MINUTES.

0105 PM     HEAVY RAIN       3 WSW BOURBONNAIS       41.15N 87.94W
06/15/2015  M0.51 INCH       KANKAKEE           IL   COCORAHS

            FELL IN 15 MINUTES

0155 PM     HEAVY RAIN       1 ESE PONTIAC           40.87N 88.63W
06/15/2015  E0.92 INCH       LIVINGSTON         IL   COCORAHS

            0.58 INCHES IN THE PAST HALF HOUR.

0330 PM     FLOOD            10 W GIFFORD            41.07N 87.24W
06/15/2015                   JASPER             IN   LAW ENFORCEMENT

            HIGH WATER SIGNS PUT UP ON 231 NEAR 300S AND 200N. HIGH
            WATER SIGNS ALSO PUT UP ON STATE ROAD 16 NEAR 480W.

0335 PM     HEAVY RAIN       2 N RENSSELAER          40.96N 87.15W
06/15/2015  M0.90 INCH       JASPER             IN   COCORAHS

            RAINFALL IN 35 MINUTES.

0345 PM     HEAVY RAIN       6 E ASHKUM              40.88N 87.84W
06/15/2015  M2.07 INCH       IROQUOIS           IL   COCORAHS

            RAINFALL SINCE 6AM WITH 1.75 INCHES IN THE PAST 60
            MINUTES.

0352 PM     TSTM WND GST     4 SSE FORESMAN          40.82N 87.26W
06/15/2015  M48.00 MPH       JASPER             IN   TRAINED SPOTTER

0400 PM     FLOOD            NAPERVILLE              41.76N 88.15W
06/15/2015                   DUPAGE             IL   TRAINED SPOTTER

            AT 75TH AND NAPER

0400 PM     FLOOD            1 N ROCHELLE            41.93N 89.06W
06/15/2015                   OGLE               IL   TRAINED SPOTTER

            WATER OVER CURBS...1-2 FEET DEEP OF STANDING WATER AT RT
            38 AND TURKINGTON TERRACE

0430 PM     FLASH FLOOD      7 NW ST. CHARLES        41.99N 88.40W
06/15/2015                   KANE               IL   TRAINED SPOTTER

            CULVERT/DITCH OVERFLOWING ON TO STREET. FOX BEND DRIVE.
            CAMPTON HILLS, IL. TORRENTIAL DOWNPOURS ONGOING.

0501 PM     FUNNEL CLOUD     MIDWAY AIRPORT          41.78N 87.75W
06/15/2015                   COOK               IL   OFFICIAL NWS OBS

            FUNNEL CLOUD OBSERVED AT MIDWAY AIRPORT

0532 PM     WATER SPOUT      5 E HYDE PARK           41.80N 87.49W
06/15/2015                   LMZ742             IL   EMERGENCY MNGR

            DISTRESS CALL FROM BOAT FOR WATERSPOUT. BOAT WAS FINE BUT
            A WATERSPOUT OCCURRED OFFSHORE AT 8600 SOUTH.

0535 PM     HEAVY RAIN       LA GRANGE PARK          41.83N 87.87W
06/15/2015  M1.43 INCH       COOK               IL   COCORAHS

            TOTAL SO FAR WITH 1.07 INCHES IN THE LAST 60 MINUTES.

0540 PM     HEAVY RAIN       ELBURN                  41.89N 88.47W
06/15/2015  M1.80 INCH       KANE               IL   CO-OP OBSERVER

            TOTAL SO FAR SINCE 6 AM. HEAVY RAINFALL NOW OCCURRING.
            LOCALIZED STREET AND YARD FLOODING.

0545 PM     HEAVY RAIN       2 S OAK PARK            41.86N 87.79W
06/15/2015  M1.71 INCH       COOK               IL   COCORAHS

            TOTAL SO FAR TODAY OF WHICH 1.25 INCHES FELL IN 45
            MINUTES.

0611 PM     HEAVY RAIN       SUGAR GROVE             41.77N 88.46W
06/15/2015  M1.00 INCH       KANE               IL   ASOS

            KARR ASOS REPORTED 1.00 INCHES OF RAIN IN 19 MINUTES.
            BREAKING DOWN FURTHER...0.34 INCHES FELL IN 4 MINUTES AND
            0.46 INCHES FELL IN 9 MINUTES.

0615 PM     FLASH FLOOD      WEST CHICAGO            41.89N 88.22W
06/15/2015                   DUPAGE             IL   TRAINED SPOTTER

            3 FT OF STANDING WATER. ANN ST, WEST OF JOLIET ST. NEAR
            COMMUNITY HIGH SCHOOL.

0615 PM     HEAVY RAIN       2 E NORTH AURORA        41.80N 88.29W
06/15/2015  M2.23 INCH       KANE               IL   COCORAHS

            TOTAL SO FAR WITH 1.00 INCHES IN THE PAST 30 MINUTES.

&&

BN
Local storm report, Jun 15, 6:47 PM CDT, 55 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
647 PM CDT MON JUN 15 2015

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

0640 PM     FLASH FLOOD      4 W AURORA              41.77N 88.37W
06/15/2015                   KANE               IL   TRAINED SPOTTER

            APPROX 1.5 FEET FLOWING WATER NEAR ILLINOIS AVE AND
            CONSTITUTION DR. STRANDED CAR.

&&

BMD
Local storm report, Jun 15, 6:50 PM CDT, 52 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
650 PM CDT MON JUN 15 2015

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

0520 PM     TSTM WND DMG     MENDOTA                 41.55N 89.12W
06/15/2015                   LA SALLE           IL   TRAINED SPOTTER

            SOUTHERN PART OF TOWN- SOUTH OF US34 - NUMEROUS TREE
            BRANCHES OF 2 TO 8 INCHES DIA DOWN. POWER/PHONE POLES
            DOWN ALONG IL251. DELAYED REPORT.

&&

BN
Local storm report, Jun 15, 7:21 PM CDT, 21 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
721 PM CDT MON JUN 15 2015

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

0721 PM     HEAVY RAIN       CHESTERTON              41.60N 87.06W
06/15/2015  M1.70 INCH       PORTER             IN   TRAINED SPOTTER

&&

BMD
Local storm report, Jun 15, 7:39 PM CDT, 3 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
739 PM CDT MON JUN 15 2015

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

0645 PM     HEAVY RAIN       2 SW DIXON              41.83N 89.51W
06/15/2015  M2.64 INCH       LEE                IL   COCORAHS

            TOTAL SO FAR SINCE THIS MORNING WITH 1.68 INCHES IN THE
            PAST 90 MINUTES.

&&

BN

The office that day

Everything else NWS Chicago, IL issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 15, 7:29 PM CDTRiver Flood AdvisoryLOTWinnebago5 days
Jun 15, 7:29 PM CDTRiver Flood AdvisoryLOTOgle3 days
Jun 15, 7:29 PM CDTRiver Flood AdvisoryLOTLee3 days
Jun 15, 7:29 PM CDTRiver Flood AdvisoryLOTDeKalb28 hr
Jun 15, 7:32 PM CDTRiver Flood WarningLOTWinnebago44 hr
Jun 15, 7:33 PM CDTTornado WarningLOTWill27 min
Jun 15, 8:44 PM CDTRiver Flood WarningLOTCook25 hr
Jun 15, 8:44 PM CDTRiver Flood WarningLOTCook34 hr
Jun 15, 8:44 PM CDTRiver Flood WarningLOTWill4 days
Jun 15, 8:44 PM CDTRiver Flood WarningLOTKane, Kendall70 hr
Jun 15, 8:44 PM CDTRiver Flood WarningLOTLaSalle3 days
Jun 15, 8:44 PM CDTRiver Flood WarningLOTWill61 hr
Jun 15, 8:44 PM CDTRiver Flood WarningLOTDuPage61 hr
Jun 15, 9:30 PM CDTRiver Flood WarningLOTGrundy, Will72 hr
Jun 15, 9:47 PM CDTRiver Flood AdvisoryLOTIroquois, Kankakee63 hr
Jun 15, 10:00 PM CDTRiver Flood WarningLOTDeKalb19 hr
Jun 15, 10:29 PM CDTAreal Flood WarningLOTCook, DeKalb, DuPage, Grundy, Kane, Kendall and 4 more12 hr
Jun 16, 2:19 AM CDTRiver Flood WarningLOTCook19 hr
Jun 16, 5:36 AM CDTRiver Flood AdvisoryLOTDeKalb36 hr

Nearby

Tornado Warnings in Illinois, 2015Every tornado warning in 2015Tornadoes in 2015

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.