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Special Weather Statement

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
207 PM CDT SAT AUG 23 2014

ILZ006-013-014-231945-
COOK IL-DUPAGE IL-LAKE IL-
207 PM CDT SAT AUG 23 2014

...GUSTY STORMS OVER NORTHERN COOK AND SOUTHERN LAKE COUNTIES...

AT 205 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM PARK CITY TO
FRANKLIN PARK...MOVING EAST AT 20 MPH.

CITIES AND TOWNS AFFECTED...
  FRANKLIN PARK...      OHARE AIRPORT...      MOUNT PROSPECT...
  LONG GROVE...         NORTHLAKE...          ARLINGTON HEIGHTS...
  BENSENVILLE...        HAWTHORN WOODS...     FOREST LAKE...
  CHICAGO AND ITS NORTH SIDE...

OTHER LOCATIONS AFFECTED...
GREAT LAKES NAVAL TRAINING CENTER...HARPER COLLEGE...LAKE COUNTY IL
FAIRGROUNDS...LAKE FOREST COLLEGE...LINCOLN PARK ZOO...LOYOLA
UNIVERSITY...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

AREAS OF DENSE FOG WITH VISIBILITIES ONE QUARTER MILE OR LESS ARE
POSSIBLE ACROSS NORTHERN ILLINOIS AND NORTHWEST INDIANA. SOME OF
THE LOWEST VISIBILITIES ARE EXPECTED ACROSS FAR NORTHEAST
ILLINOIS. MOTORISTS SHOULD REDUCE SPEED IN AREAS OF DENSE FOG.

&&

LAT...LON 4233 8781 4227 8782 4223 8781 4214 8774
      4208 8767 4191 8762 4190 8760 4184 8760
      4181 8758 4194 8798 4207 8811 4235 8812
      4236 8782
TIME...MOT...LOC 1906Z 273DEG 10KT 4240 8806 4193 8787

$$







Flood Advisory

FLOOD ADVISORY
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
153 PM CDT SAT AUG 23 2014

ILC031-097-232300-
/O.NEW.KLOT.FA.Y.0077.140823T1853Z-140823T2300Z/
/00000.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
LAKE IL-COOK IL-
153 PM CDT SAT AUG 23 2014

THE NATIONAL WEATHER SERVICE IN CHICAGO HAS ISSUED AN

* URBAN AND SMALL STREAM FLOOD ADVISORY FOR...
  LAKE COUNTY IN NORTHEAST ILLINOIS...
  NORTHERN COOK COUNTY IN NORTHEAST ILLINOIS...

* UNTIL 600 PM CDT

* AT 149 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  THUNDERSTORMS WITH HEAVY RAINFALL ACROSS THE ADVISORY AREA. DOPPLER
  RADAR ESTIMATED ONE INCH OF RAIN PER HOUR WITH THESE STORMS...WITH
  SOME LOCATIONS RECEIVING THAT AMOUNT OF RAIN IN JUST 20 TO 30
  MINUTES. THE STORMS ARE MOVING QUICK ENOUGH THAT THEY SHOULD
  PREVENT FLASH FLOODING...HOWEVER LOCALIZED FLOODING IS LIKELY WITH
  THESE STORMS.

* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE MINOR FLOODING TO
  OCCUR...ESPECIALLY ALONG SMALL STREAMS AND NEAR LOW WATER
  CROSSINGS...AS WELL AS IN POOR DRAINAGE PLACES. SOME LOCATIONS
  THAT WILL EXPERIENCE MINOR FLOODING INCLUDE...ANTIOCH...CHICAGO...
  EVANSTON...SCHAUMBURG...AND WAUKEGAN.

OTHER LOCATIONS AFFECTED...
CHAIN O LAKES STATE PARK...COLLEGE OF LAKE COUNTY...GREAT LAKES NAVAL
TRAINING CENTER...HARPER COLLEGE...IL BEACH STATE PARK...LAKE COUNTY
FIELDERS BASEBALL...


PRECAUTIONARY/PREPAREDNESS ACTIONS...

EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE ELEVATED LEVELS ON SMALL
CREEKS AND STREAMS...PONDING OF WATER ON ROADS...URBAN AREAS...
HIGHWAYS... VIADUCTS...UNDERPASSES AND LOW LYING AREAS.

MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. DO NOT ATTEMPT TO CROSS
BRIDGES...DIPS...OR OTHER LOW SPOTS IF WATER COVERS THE ROADWAY.
NEVER TRY TO CROSS A FLOWING STREAM...EVEN A SMALL ONE...ON FOOT OR
IN A VEHICLE.

&&

LAT...LON 4249 8779 4227 8782 4214 8774 4208 8767
      4191 8762 4190 8760 4184 8760 4175 8752
      4195 8792 4199 8793 4199 8801 4201 8804
      4199 8826 4207 8826 4207 8824 4215 8824
      4216 8820 4250 8820

$$

MTF







Short Term Forecast

SHORT TERM FORECAST
NATIONAL WEATHER SERVICE CHICAGO IL
101 PM CDT SAT AUG 23 2014

ILZ005-006-012>014-020>023-033-039-232000-
MCHENRY-LAKE IL-KANE-DUPAGE-COOK-KENDALL-GRUNDY-WILL-KANKAKEE-
IROQUOIS-FORD-
INCLUDING THE CITIES OF...WOODSTOCK...WAUKEGAN...AURORA...
WHEATON...CHICAGO...OSWEGO...MORRIS...JOLIET...KANKAKEE...
WATSEKA...PAXTON
101 PM CDT SAT AUG 23 2014

.NOW...
AT 1250 PM CDT...THE LEADING EDGE OF A LINE OF SHOWERS AND
THUNDERSTORMS WAS FROM MARENGO TO ELBURN TO FAIRBURY IN LIVINGSTON
COUNTY. THESE STORMS ARE MOVING TO THE EAST AROUND 30 MPH.

THE LINE SHOULD BE NEAR A WAUKEGAN TO CHICAGO TO RENSSELAER LINE
BETWEEN 130 PM AND 200 PM CDT. THE STRONGEST STORMS ARE CAPABLE
OF PRODUCING HEAVY DOWNPOURS AND GUSTS TO 40 MPH. HEAVY RAINFALL
FALLING IN A SHORT TIME WILL RESULT IN PONDING OF WATER ON ROADS
AND WILL ALSO REDUCE VISIBILITY.

$$



Hazardous Weather Outlook

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
1100 AM CDT SAT AUG 23 2014

ILZ003>006-008-010>014-019>023-032-033-039-INZ001-002-010-011-019-
241600-
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-
1100 AM CDT SAT AUG 23 2014 /1200 PM EDT SAT AUG 23 2014/

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

.DAY ONE...THIS AFTERNOON AND TONIGHT.

  WEATHER HAZARDS EXPECTED:

   SCATTERED THUNDERSTORMS...SOME COULD PRODUCE:
    TORRENTIAL RAINFALL AND FLASH FLOODING.
    FREQUENT CLOUD TO GROUND LIGHTNING.
    WIND GUSTS OVER 40 MPH.

   AREAS AFFECTED AND TIMING:

   SCATTERED THUNDERSTORMS WITH SOME SPORADIC GUSTY WINDS AND VERY
   HEAVY RAINFALL WILL OCCUR ACROSS NORTH CENTRAL ILLINOIS EARLY
   THIS AFTERNOON AND BE POSSIBLE ACROSS NORTHEAST ILLINOIS AND
   NORTHWEST INDIANA THROUGH THE EVENING.

   DISCUSSION:

   AN AREAS OF STORMS WILL MOVE EASTWARD ACROSS NORTH CENTRAL
   ILLINOIS EARLY THIS AFTERNOON. WITH VERY HUMID AIR AHEAD OF
   THIS...AT LEAST SCATTERED STORMS SHOULD CONTINUE INTO PARTS OF
   NORTHEAST ILLINOIS AND POSSIBLY NORTHWEST INDIANA LATER THIS
   AFTERNOON. THE MAIN THREAT FROM ANY STORMS THAT DEVELOP WILL BE
   TORRENTIAL RAINFALL WHICH COULD LEAD TO LOCALIZED FLASH
   FLOODING.

FLOODING WILL CONTINUE ALONG PORTIONS OF THE DUPAGE AND MAZON
RIVERS.

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

THERE IS A CHANCE OF THUNDERSTORMS MONDAY AFTERNOON THROUGH
FRIDAY. HEAVY RAIN AND FLASH FLOODING WILL BE POSSIBLE WITH ANY
THUNDERSTORMS THAT DEVELOP.

HEAT INDICES COULD EXCEED 100 DEGREES SUNDAY AND MONDAY
AFTERNOONS.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT ANTICIPATED THROUGH TONIGHT...HOWEVER
RAINFALL MEASUREMENTS ARE APPRECIATED.

&&

$$



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