Flash Flood Warning 2, NWS Chicago, IL

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHICAGO IL
2 55 AM CDT THU AUG 14 1987

 ...HEAVY THUNDERSTORMS ACROSS DUPAGE AND NORTHWEST HALF OF COOK
    COUNTY...

AT 2 50 AM THIS MORNING THUNDERSTORMS CONTAINING VERY HEAVY RAIN
WERE LOCATED ACROSS NORTHERN COOK AND EXTREME NORTHWEST DUPAGE COUNTIES.
HOWEVER AT OHARE THE HEAVY RAIN HAS ENDED FOR NOW.  IN ABOUT A
5 HOUR PERIOD...BETWEEN 9 20 PM LAST EVENING AND 2 30 AM THIS
FRIDAY MORNING...5.60 INCHES OF RAIN FELL AT OHARE AS A SERIES OF
STRONG THUNDERSTORMS MOVED OVER THE AIRPORT.

MOTORISTS ARE URGED TO EXERCISE CAUTION WHILE TRAVELING ACROSS
THE NORTHWEST PORTION OF THE METROPOLITAN AREA EARLY THIS MORNING AS
PONDING OF FREEWAYS...FLOODING OF VIADUCTS AS WELL AS FLOODING OF LOW
LYING AREAS IS LIKELY.

MORRISON

URBAN AND SMALL STREAMS FLOOD STATEMENT
NATIONAL WEATHER SERVICE ROCKFORD IL
320 AM CDT FRI AUG 14 1987

   ...MINOR FLOODING IN ROCKFORD METRO AREA THIS MORNING...

AT 315 AM CDT... STRONG THUNDERSTORMS CONTINUE ACROSS NORTHERN
ILLINOIS GENERALLY NORTH OF A MOLINE ILLINOIS TO SOUTH CHICAGO
LINE.  THE STRONGER STORMS WERE LOCATED FROM NEAR ROCKFORD AND IN
THE CITY OF CHICAGO AND IN WEST AND NORTH SUBURBS OF CHICAGO.
MOVEMENT OF THE THUNDERSTORMS WAS NORTHEAST AT 25 MPH.

THE THUNDERSTORMS WERE PRODUCING VERY HEAVY RAINFALL AMOUNTS... GUSTY
WINDS... AND DANGEROUS LIGHTNING.  THE HEAVY RAINFALL IS CAUSING
THE REAL PROBLEMS THIS MORNING.  REPORTS OF WATER PONDING IN LOW
AREAS... MINOR STREET AND UNDERPASS FLOODING CAUSING SOME CARS TO
STALL.  DRAINAGE DITCHS AND SMALL STREAMS IN NORTHERN ILLINOIS...
ESPECIALLY NEAR URBAN AREAS ARE RUNNING NEAR IF NOT AT FULL CAPACITY.
SOME STREAMS IN THE CITY OF ROCKFORD ARE STARTING TO COVER LOW
AREAS AND CAUSE SOME MINOR PROBLEMS WITH TRAVEL.

OVER 2 INCHES OF RAIN HAS FALLEN TONIGHT IN AT THE ROCKFORD AIRPORT...
THE MAJORITY FALLING IN THE LAST THREE HOURS.  MORE RAIN IS EXPECTED
ON INTO THE MORNING HOURS... BUT SHOULD BE SLOWLY TAPERING OFF.

THE ADDITIONAL RAINFALL WILL CONTINUE TO CAUSE PROBLEMS WELL INTO
THE MORNING HOURS... ESPECIALLY IN URBAN AND LOW LYING AREAS.  MINOR
FLOODING OF STREETS... DRAINAGE AREAS... UNDERPASSES AND SMALL STREAMS
CAN BE EXPECTED.  IF WATER IS COVERING THE ROAD... DO NOT CROSS! THE
WATER MAY BE DEEPER THAN YOU THINK OR THE ROAD COULD HAVE BEEN WASHED
AWAY!  USE CAUTION IN TRAVEL... AND TAKE EXTRA TIME IN TRAVEL THIS
MORNING.

NORTHERN ILLINOIS TRAVELERS IN OR NEAR...

THE GREATER ROCKFORD METRO AREA...  BELVIDERE... OREGON... SYCAMORE...
DEKALB... ROCHELLE... DIXON OR NEAR SMALL CREEKS AND SMALL STREAMS
WILL BE THE MOST LIKELY TO EXPERIENCE MINOR FLOOD PROBLEMS.

ATTN ISP... 1... 2... 16
PIERCE

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHICAGO IL
3 45 AM CDT THU AUG 14 1987

 ...HEAVY THUNDERSTORMS CONTINUE ACROSS PORTIONS OF THE CHICAGO AREA...

AT 3 45 AM CDT... RADAR CONTINUED TO SHOW STRONG THUNDERSTORMS MOVING
THROUGH THE EXTREME NORTH AND NORTHWEST SECTIONS OF THE CHICAGO AREA.
THE HEAVIEST THUNDERSTORMS WERE IN A 20 MILE WIDE BAND THAT EXTENDED
FROM LAKE COUNTY NEAR THE WISCONSIN STATE LINE... SOUTHWESTWARD THROUGH
MCHENRY AND NORTHWEST KANE COUNTIES AND ON INTO NORTH CENTRAL ILLINOIS
WEST OF DEKALB. THE STORMS WERE MOVING TO THE NORTHEAST AT 30 MPH.
PERSONS IN LAKE...MCHENRY...AND NORTHWEST KANE COUNTIES IN ILLINOIS
CAN EXPECT THUNDERSTORMS TO CONTINUE FOR AT LEAST ANOTHER HOUR WITH
VERY HEAVY RAIN AND POSSIBLY SOME HAIL.

   THUNDERSTORMS THAT MOVED OVER NORTHERN DUPAGE AND NORTHWEST COOK
COUNTIES THURSDAY EVENING AND EARLY THIS FRIDAY MORNING HAVE MOVED
OUT OF THE AREA FOR THE TIME BEING.  HOWEVER... RAINFALL AMOUNTS HAVE
BEEN EXCESSIVE. AS OF 3 15 AM... OHARE AIRPORT OFFICIALLY RECORDED
 5.89 INCHES OF RAIN.  AT THIS TIME ONLY MINOR LOWLAND FLOODING AND
URBAN STREET FLOODING HAS BEEN REPORTED.  HOWEVER...THIS SITUATION IS
BEING MONITORED CLOSELY FOR FLASH FLOOD POTENTIAL.

   MOTORISTS TRAVELING THROUGH DUPAGE AND NORTHWEST COOK COUNTIES
EARLY THIS MORNING SHOULD USE CAUTION AS THEY MAY ENCOUNTER STANDING
WATER ON ROADWAYS.

MERZLOCK

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHICAGO IL
5 20 AM CDT FRI AUG 14 1987

 ...HEAVY THUNDERSTORMS CONTINUE ACROSS PORTIONS OF THE NORTH CENTRAL
AND NORTHEAST ILLINOIS...INCLUDING THE NORTHWEST PORTION OF THE
CHICAGO METROPOLITAN AREA....

AT 5 15 AM CDT THIS MORNING A BAND OF THUNDERSTORMS CONTAINING VERY
HEAVY RAIN WAS LOCATED FROM NEAR WAUKEGAN SOUTHWESTWARD TO ELGIN
TO MENDOTA IN EXTREME NORTHWEST LA SALLE COUNTY. FLOODING OF LOW
LYING AREAS IS LIKELY ASSOCIATED WITH THIS BAND OF THUNDERSTORMS
FROM NOW UNTIL 8 AM THIS MORNING OVER MUCH OF KANE...SOUTHEAST
MCHENRY...LAKE AND EXTREME NORTHWEST COOK COUNTY.

FLOODING OF LOW LYING AREAS HAS ALREADY OCCURRED OVER MUCH OF
DUPAGE AND NORTHWEST COOK COUNTIES DURING THE NIGHT AS 3 TO 6 INCHES
OF RAIN FELL FROM THUNDERSTORMS THAT MOVED THROUGH THAT AREA BETWEEN
9 PM...AND 3 AM THIS MORNING.
 5.89 INCHES OF RAIN FELL AT OHARE BETWEEN 9 PM AND 3 AM THIS MORNING
AT OHARE.

THIS NEW BAND OF THUNDERSTORMS WILL HAVE TO BE WATCHED CLOSLY AS
THIS BAND OF THUNDERSTORMS MAY BUILD SOUTHEAST INTO DUPAGE AND
TBE REMAINDER OF NORTHWEST COOK COUNTY.

   MOTORISTS TRAVELING THROUGH THE WEST AND NORTHWEST SECTIONS OF
THE CHICAGO METROPOLITAN AREAS SHOULD DRIVE WITH CAUTION AS THEY
MAY ENCOUNTER STANDING WATER ON ROADWAYS.

MORRISON

URBAN AND SMALL STREAMS FLOOD STATEMENT
NATIONAL WEATHER SERVICE ROCKFORD IL
720 AM CDT FRI AUG 14 1987

   ...MINOR FLOODING IN ROCKFORD METRO AREA THIS MORNING...

AT 715 AM CDT... RAIN AND THUNDERSTORMS CONTINUE ACROSS NORTHERN
ILLINOIS GENERALLY NORTH OF A PEORIA ILLINOIS TO SOUTH CHICAGO
LINE.  THE STRONGER STORMS WERE LOCATED FROM NEAR ROCKFORD EAST
TOWARD THE CITY OF CHICAGO AND SOUTHEAST TOWARD DEKALB ILLINOIS.
OTHER THUNDERSTORMS ARE NOW REDEVELOPING IN NORTHWEST ILLINOIS
TOWARD THE MISSISSIPPI RIVER SOUTH OF DUBUQUE IOWA TO NEAR MOLINE
ILLINOIS.  MOVEMENT OF THE THUNDERSTORMS WAS NORTHEAST AT 25 MPH.

THE THUNDERSTORMS WERE PRODUCING VERY HEAVY RAINFALL AMOUNTS...
THE REAL PROBLEMS THIS MORNING.  REPORTS OF WATER PONDING IN LOW
AREAS... MINOR STREET AND UNDERPASS FLOODING CAUSING SOME CARS TO
STALL.  DRAINAGE DITCHS AND SMALL STREAMS IN NORTHERN ILLINOIS...
ESPECIALLY NEAR URBAN AREAS ARE RUNNING NEAR IF NOT AT FULL CAPACITY.
OVER 4 1/2 INCHES OF RAIN HAS FALLEN OVERNIGHT AT THE ROCKFORD AIRPORT.
ADDITIONAL THUNDERSTORMS ARE DEVELOPING IN IN NORTHWEST ILLINOIS... AND
WILL BE MOVING NORTHEAST ACROSS RAIN SOAKED AREAS.

THE ADDITIONAL RAINFALL WILL CONTINUE TO CAUSE PROBLEMS WELL INTO
THE MORNING HOURS... ESPECIALLY IN URBAN AND LOW LYING AREAS.  MINOR
FLOODING OF STREETS... DRAINAGE AREAS... UNDERPASSES AND SMALL STREAMS
CAN BE EXPECTED.  IF WATER IS COVERING THE ROAD... DO NOT CROSS! THE
WATER MAY BE DEEPER THAN YOU THINK OR THE ROAD COULD HAVE BEEN WASHED
AWAY!  USE CAUTION IN TRAVEL... AND TAKE EXTRA TIME IN TRAVEL THIS
MORNING.

NORTHERN ILLINOIS TRAVELERS IN OR NEAR...

THE GREATER ROCKFORD METRO AREA...  BELVIDERE... OREGON... SYCAMORE...
DEKAL<B... ROCHELLE... DIXON OR NEAR SMALL CREEKS AND SMALL STREAMS
WILL BE THE MOST LIKELY TO EXPERIENCE SOME FLOOD PROBLEMS.

ATTN ISP... 1... 2... 16
PIERCE

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHICAGO IL
7 20 AM CDT FRI AUG 14 1987

...FLASH FLOOD WARNING EXTENDED UNTIL 10 AM OVER NORTHEAST ILLINOIS...

 ...HEAVY THUNDERSTORMS CONTINUE ACROSS PORTIONS OF THE NORTH CENTRAL
AND NORTHEAST ILLINOIS...INCLUDING THE NORTHWEST PORTION OF THE
CHICAGO METROPOLITAN AREA....

AT 7 00 AM CDT THIS MORNING A BAND OF THUNDERSTORMS CONTAINING VERY
HEAVY RAIN WAS LOCATED FROM NEAR WAUKEGAN SOUTHWESTWARD TO ELGIN
TO MENDOTA IN EXTREME NORTHWEST LA SALLE COUNTY. FLOODING OF LOW
LYING AREAS IS LIKELY ASSOCIATED WITH THIS BAND OF THUNDERSTORMS.
THE FLASH FLOOD WARNING CONTINUES OVER DUPAGE AND NORTHERN COOK. THE
BAND OF HEAVY THUNDERSTORMS CONTINUES TO MOVE ACROSS NORTHEAST ILLINOIS.
THE WARNING HAS BEEN EXTENDED UNTIL 10AM THIS MORNING.

FLOODING OF LOW LYING AREAS HAS ALREADY OCCURRED OVER MUCH OF
DUPAGE AND NORTHWEST COOK COUNTIEDURING THE NIGHT AS 3 TO 6 INCHES
OF RAIN FELL FROM THUNDERSTORMS THAT MOVED THROUGH THE AREA.
5.90 INCHES OF RAIN HAS FALLEN AT OHARE SINCE 9PM THURSDAY EVENING.
THAT AMOUNT OF RAIN IS APPROACHING THE 24 HOUR RAINFALL RECORD OF
6.24 INCHES WHICH FELL ON JULY 12TH THROUGH 13TH IN 1957.

THIS NEW BAND OF THUNDERSTORMS WILL HAVE TO BE WATCHED CLOSLY AS
THIS BAND OF THUNDERSTORMS MAY BUILD SOUTHEAST INTO DUPAGE AND
THE REMAINDER OF NORTHWEST COOK COUNTY.

   MOTORISTS TRAVELING THROUGH THE WEST AND NORTHWEST SECTIONS OF
THE CHICAGO METROPOLITAN AREAS SHOULD DRIVE WITH CAUTION AS THEY
MAY ENCOUNTER STANDING WATER ON ROADWAYS.

SOME PRELIMINARY RAINFALL TOTALS FROM AROUND THE AREA...

AURORA...                   1.37
GURNEE...BOULEVARD STATION  2.61
GURNEE...PUBLIC WORKS       2.64
ANTIOCH....                 2.30
CHGO..CICERO AND PETERSON   2.30
CHGO..LINCOLN/DAMEN         3.65
CHGO..VAN BUREN ST.         2.17
RIVERSIDE                   3.46
WATSEKA                     1.59
ARLINGTON HEIGHTS           3.40
GLENDALE HEIGHTS        =    3.17
ROUND LAKE BEACH            3.74
WESTMONT                    1.64
OHARE AIRPORT               5.90

ADDITIONAL STATEMENTS WILL BE ISSUED THROUGHOUT THE MORNING ON THIS
STORM.

ORGLER