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Flash Flood Warning

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
606 PM CDT SAT JUL 23 2016

ILC007-111-201-240400-
/O.CON.KLOT.FF.W.0006.000000T0000Z-160724T0400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
WINNEBAGO IL-BOONE IL-MCHENRY IL-
606 PM CDT SAT JUL 23 2016

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1100 PM CDT
SATURDAY FOR SOUTHEASTERN WINNEBAGO...SOUTHERN BOONE AND SOUTHWESTERN
MCHENRY COUNTIES...

AT 600 PM CDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING
HEAVY RAIN ACROSS THE WARNED AREA. RADAR RAINFALL ESTIMATES INDICATE
THAT BETWEEN THREE AND FOUR INCHES OF RAIN HAS FALLEN OVER PORTIONS
OF THE WARNED AREA...PARTICULARLY WITHIN THE AREA ALONG THE
INTERSTATE 90 CORRIDOR FROM CHERRY VALLEY TO ROCKFORD. RAINFALL WAS
DECREASING ACROSS THE WARNING AREA AS OF 6 PM CDT...THOUGH
ADDITIONAL SHOWERS AND THUNDERSTORMS ARE LIKELY THIS EVENING.

SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
ROCKFORD...BELVIDERE...MARENGO...ROCKFORD AIRPORT...CHERRY
VALLEY...DAVIS JUNCTION AND NEW MILLFORD.

INCLUDING THE FOLLOWING INTERSTATES...
 I-39 BETWEEN MILE MARKERS 115 AND 123.
 I-90 BETWEEN MILE MARKERS 42 AND 64.

THIS INCLUDES...  BOONE COUNTY FAIRGROUNDS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TURN AROUND...DONT DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.

&&

LAT...LON 4230 8859 4215 8859 4215 8914 4228 8914

$$

RATZER



Severe Thunderstorm Warning

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
602 PM CDT SAT JUL 23 2016

ILC089-111-232315-
/O.CON.KLOT.SV.W.0077.000000T0000Z-160723T2315Z/
KANE IL-MCHENRY IL-
602 PM CDT SAT JUL 23 2016

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 615 PM CDT
FOR NORTHEASTERN KANE AND SOUTHEASTERN MCHENRY COUNTIES...

AT 601 PM CDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM TROUT VALLEY TO NEAR ELGIN...MOVING EAST AT 20 MPH. A
VERY GRADUAL WEAKENING HAS CONTINUED WITH THESE STORMS.

HAZARD...60 MPH WIND GUSTS.

SOURCE...RADAR INDICATED.

IMPACT...EXPECT DAMAGE TO ROOFS...SIDING...AND TREES.

LOCATIONS IMPACTED INCLUDE...
ELGIN...CARPENTERSVILLE...ALGONQUIN...SLEEPY HOLLOW...EAST DUNDEE...LAKE
IN THE HILLS...HUNTLEY...WEST DUNDEE...GILBERTS...LAKEWOOD...TROUT VALLEY...
CRYSTAL LAKE...CARY...FOX RIVER GROVE...PINGREE GROVE AND BARRINGTON
HILLS.

INCLUDING THE FOLLOWING INTERSTATE...
 I-90 BETWEEN MILE MARKERS 23 AND 32.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

LARGE HAIL AND DAMAGING WINDS AND CONTINUOUS CLOUD TO GROUND
LIGHTNING IS OCCURRING WITH THESE STORMS. MOVE INDOORS IMMEDIATELY.
LIGHTNING IS ONE OF NATURES LEADING KILLERS. REMEMBER...IF YOU CAN
HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE STRUCK BY LIGHTNING.

TORRENTIAL RAINFALL IS OCCURRING WITH THESE STORMS...AND MAY LEAD TO
FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS.

&&

LAT...LON 4222 8820 4216 8820 4215 8824 4207 8824
      4207 8826 4202 8826 4203 8841 4212 8843
      4227 8845
TIME...MOT...LOC 2301Z 278DEG 16KT 4219 8825 4203 8836

HAIL...<.75IN
WIND...60MPH

$$

RC



Severe Weather Statement

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
602 PM CDT SAT JUL 23 2016

ILC089-111-232315-
/O.CON.KLOT.SV.W.0077.000000T0000Z-160723T2315Z/
KANE IL-MCHENRY IL-
602 PM CDT SAT JUL 23 2016

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 615 PM CDT
FOR NORTHEASTERN KANE AND SOUTHEASTERN MCHENRY COUNTIES...

AT 601 PM CDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM TROUT VALLEY TO NEAR ELGIN...MOVING EAST AT 20 MPH. A
VERY GRADUAL WEAKENING HAS CONTINUED WITH THESE STORMS.

HAZARD...60 MPH WIND GUSTS.

SOURCE...RADAR INDICATED.

IMPACT...EXPECT DAMAGE TO ROOFS...SIDING...AND TREES.

LOCATIONS IMPACTED INCLUDE...
ELGIN...CARPENTERSVILLE...ALGONQUIN...SLEEPY HOLLOW...EAST DUNDEE...LAKE
IN THE HILLS...HUNTLEY...WEST DUNDEE...GILBERTS...LAKEWOOD...TROUT VALLEY...
CRYSTAL LAKE...CARY...FOX RIVER GROVE...PINGREE GROVE AND BARRINGTON
HILLS.

INCLUDING THE FOLLOWING INTERSTATE...
 I-90 BETWEEN MILE MARKERS 23 AND 32.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

LARGE HAIL AND DAMAGING WINDS AND CONTINUOUS CLOUD TO GROUND
LIGHTNING IS OCCURRING WITH THESE STORMS. MOVE INDOORS IMMEDIATELY.
LIGHTNING IS ONE OF NATURES LEADING KILLERS. REMEMBER...IF YOU CAN
HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE STRUCK BY LIGHTNING.

TORRENTIAL RAINFALL IS OCCURRING WITH THESE STORMS...AND MAY LEAD TO
FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS.

&&

LAT...LON 4222 8820 4216 8820 4215 8824 4207 8824
      4207 8826 4202 8826 4203 8841 4212 8843
      4227 8845
TIME...MOT...LOC 2301Z 278DEG 16KT 4219 8825 4203 8836

HAIL...<.75IN
WIND...60MPH

$$

RC



Flood Advisory

FLOOD ADVISORY
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
544 PM CDT SAT JUL 23 2016

ILC097-111-240345-
/O.NEW.KLOT.FA.Y.0039.160723T2244Z-160724T0345Z/
/00000.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MCHENRY IL-LAKE IL-
544 PM CDT SAT JUL 23 2016

THE NATIONAL WEATHER SERVICE IN CHICAGO  HAS ISSUED A

* URBAN AND SMALL STREAM FLOOD ADVISORY FOR POOR DRAINAGE AREAS
  FOR...
  SOUTHEASTERN MCHENRY COUNTY IN NORTHEASTERN ILLINOIS...
  LAKE COUNTY IN NORTHEASTERN ILLINOIS...

* UNTIL 1045 PM CDT

* AT 540 PM CDT...DOPPLER RADAR INDICATED HEAVY RAIN DUE TO
  THUNDERSTORMS. THIS WILL CAUSE URBAN AND SMALL STREAM FLOODING.
  OVERFLOWING POOR DRAINAGE AREAS WILL RESULT IN MINOR FLOODING IN
  THE ADVISORY AREA. UP TO TWO INCHES OF RAIN HAS ALREADY FALLEN.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE... ISLAND
  LAKE...WAUCONDA...LINDENHURST...LAKE VILLA... MUNDELEIN...LAKE
  VILLA AND LIBERTYVILLE.

ADDITIONAL RAINFALL OF ONE TO TWO INCHES IS EXPECTED OVER THE AREA.
THIS ADDITIONAL RAIN WILL LIKELY PRODUCE MINOR FLOODING.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE PONDING OF WATER IN
URBAN AREAS...HIGHWAYS...STREETS AND UNDERPASSES AS WELL AS OTHER
POOR DRAINAGE AREAS AND LOW LYING SPOTS. DO NOT ATTEMPT TO TRAVEL
ACROSS FLOODED ROADS. FIND ALTERNATE ROUTES.

&&

LAT...LON 4249 8780 4239 8781 4238 8781 4236 8782
      4237 8782 4233 8783 4233 8782 4231 8782
      4230 8783 4229 8783 4221 8780 4215 8776
      4218 8829 4234 8828 4236 8810 4250 8809

$$

RATZER



Hazardous Weather Outlook

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
406 PM CDT SAT JUL 23 2016

ILZ003>006-008-010>014-019>023-032-033-039-INZ001-002-010-011-019-
242115-
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-
406 PM CDT SAT JUL 23 2016 /506 PM EDT SAT JUL 23 2016/

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

.DAY ONE...TONIGHT.

WEATHER HAZARDS EXPECTED:
  SIGNIFICANT THUNDERSTORM RISK...WITH AN ASSOCIATED:
      LIMITED HAIL RISK...UP TO HALF DOLLAR SIZE.
      ELEVATED THUNDERSTORM WIND DAMAGE RISK...UP TO 70 MPH.
  LIMITED FLOODING RISK.
  SIGNIFICANT EXCESSIVE HEAT RISK.

DISCUSSION:

ISOLATED TO SCATTERED THUNDERSTORMS WILL BE POSSIBLE LATE THIS AFTERNOON
MAINLY ALONG AND NORTH OF INTERSTATE 80. MOST STORMS WILL BE SLOW
MOVING AND THUS CAPABLE OF HEAVY RAINFALL AND LOCALIZED FLOODING.
IN ADDITION...THERE WILL BE A BRIEF GUSTY WIND THREAT WITH ANY STORMS.

A MORE ORGANIZED AREA OF THUNDERSTORMS WILL MOVE IN FROM EASTERN IOWA
THIS EVENING AND IMPACT AREAS ALONG AND NORTH OF INTERSTATE 80. DAMAGING
WINDS...TORRENTIAL DOWNPOURS AND LIGHTNING WILL BE THE MAIN THREATS. A
MINIMAL TORNADO THREAT EXISTS NEAR THE WISCONSIN BORDER.

ADDITIONAL THUNDERSTORMS ARE POSSIBLE OVERNIGHT.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY.

SUNDAY...
  LIMITED FLOODING RISK.
  LIMITED SEVERE THUNDERSTORM RISK.
  SIGNIFICANT EXCESSIVE HEAT RISK.
MONDAY...
  LIMITED THUNDERSTORM RISK.
WEDNESDAY THROUGH FRIDAY...
  LIMITED THUNDERSTORM RISK.

.SPOTTER INFORMATION STATEMENT...

SPOTTER REPORTS WILL LIKELY BE NEEDED THROUGH TONIGHT.

GENERAL STORM MOTION OF THE DAY:

MOVING TOWARD THE EAST AT 10 MPH THIS AFTERNOON AND THEN TO THE SOUTHEAST
AT 20 TO 30 MPH THIS EVENING AND TONIGHT.

&&

$$



Flood Advisory

FLOOD ADVISORY
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
355 PM CDT SAT JUL 23 2016

ILC007-111-201-240000-
/O.NEW.KLOT.FA.Y.0038.160723T2055Z-160724T0000Z/
/00000.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
WINNEBAGO IL-BOONE IL-MCHENRY IL-
355 PM CDT SAT JUL 23 2016

THE NATIONAL WEATHER SERVICE IN CHICAGO  HAS ISSUED A

* FLOOD ADVISORY FOR...
  EAST CENTRAL WINNEBAGO COUNTY IN NORTH CENTRAL ILLINOIS...
  BOONE COUNTY IN NORTH CENTRAL ILLINOIS...
  NORTHWESTERN MCHENRY COUNTY IN NORTHEASTERN ILLINOIS...

* UNTIL 700 PM CDT

* AT 353 PM CDT...DOPPLER RADAR INDICATED HEAVY RAIN DUE TO
  THUNDERSTORMS. UP TO THREE INCHES OF RAIN HAS ALREADY FALLEN IN
  NORTHERN BOONE COUNTY. THIS WILL CAUSE MINOR FLOODING IN THE
  ADVISORY AREA.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  ROCKFORD...BELVIDERE...LOVES PARK...HARVARD...POPLAR GROVE...CHERRY
  VALLEY...CAPRON...TIMBERLANE AND CALEDONIA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

EXCESSIVE RUNOFF FROMHEAVY RAINFALL WILL ALSO CAUSE FLOODING OF
SMALL CREEKS ANDSTREAMS...AS WELL AS FARM AND COUNTRY ROADS. THE
EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL ALSO CAUSE PONDING OF
WATER IN URBAN AREAS...HIGHWAYS...STREETS AND UNDERPASSES AS WELL AS
OTHER POOR DRAINAGE AREAS AND LOW LYING SPOTS. DO NOT ATTEMPT TO
TRAVEL ACROSS FLOODED ROADS. FIND ALTERNATE ROUTES.

&&

LAT...LON 4222 8870 4221 8899 4249 8890 4249 8857

$$

RC



Severe Thunderstorm Watch

SEVERE THUNDERSTORM WATCH OUTLINE UPDATE FOR WS 412
NWS STORM PREDICTION CENTER NORMAN OK
320 PM CDT SAT JUL 23 2016

SEVERE THUNDERSTORM WATCH 412 IS IN EFFECT UNTIL 1000 PM CDT
FOR THE FOLLOWING LOCATIONS

ILC007-011-015-031-037-043-063-073-085-089-093-097-099-103-111-
141-155-161-177-195-197-201-240300-
/O.NEW.KWNS.SV.A.0412.160723T2020Z-160724T0300Z/

IL
.    ILLINOIS COUNTIES INCLUDED ARE

BOONE                BUREAU              CARROLL
COOK                 DE KALB             DUPAGE
GRUNDY               HENRY               JO DAVIESS
KANE                 KENDALL             LAKE
LA SALLE             LEE                 MCHENRY
OGLE                 PUTNAM              ROCK ISLAND
STEPHENSON           WHITESIDE           WILL
WINNEBAGO
$$




Air Quality Alert

ILZ005-006-012>014-020>022-241015-
MCHENRY-LAKE IL-KANE-DUPAGE-COOK-KENDALL-GRUNDY-WILL-
INCLUDING THE CITIES OF...WOODSTOCK...WAUKEGAN...AURORA...ELGIN...
WHEATON...CHICAGO...OSWEGO...MORRIS...JOLIET
512 AM CDT SAT JUL 23 2016

...AIR QUALITY ALERT IN EFFECT UNTIL MIDNIGHT CDT TONIGHT...

THE ILLINOIS ENVIRONMENTAL PROTECTION AGENCY HAS DETERMINED THAT AN
AIR POLLUTION ACTION DAY WILL BE DECLARED FOR THE GREATER CHICAGO
METROPOLITAN AREA AND IS IN EFFECT UNTIL MIDNIGHT CDT TONIGHT.

AN AIR POLLUTION ACTION DAY IS DECLARED WHEN WEATHER CONDITIONS ARE
SUCH THAT WIDESPREAD OZONE AND OR PARTICULATE LEVELS ARE EXPECTED TO
BE AT OR ABOVE THE UNHEALTHY FOR SENSITIVE GROUPS CATEGORY OF THE
AIR QUALITY INDEX.

ACTIVE CHILDREN AND ADULTS ESPECIALLY PEOPLE WITH PULMONARY OR
RESPIRATORY DISEASE SUCH AS ASTHMA SHOULD LIMIT PROLONGED OUTDOOR
ACTIVITY.

PARTICIPANTS IN THE...PARTNERS FOR CLEAN AIR PROGRAM...ARE REQUESTED
TO INITIATE THEIR ACTIVITIES. RESIDENTS ARE ALSO URGED TO REDUCE
POLLUTION LEVELS. AQI FORECAST AND TIPS ON HOW YOU CAN REDUCED YOUR
EMISSIONS CAN BE FOUND AT WWW.CLEANTHEAIR.ORG.

INFORMATION AND AQI LEVELS CAN ALSO BE FOUND AT WWW.EPA.STATE.IL.US
AND AT WWW.AIRNOW.GOV. MEDIA CONTACT...217 299 6057.

$$



U.S. Dept. of Commerce
NOAA National Weather Service
1325 East West Highway
Silver Spring, MD 20910
E-mail: w-nws.webmaster@noaa.gov
Page last modified: May 16, 2007
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