Extreme Rainfall Rate at Chicago-O'Hare this Morning!

BETWEEN 947AM AND 955AM THIS MORNING...EXTREME RAINFALL RATES
OCCURRED AT CHICAGO-OHARE IN ASSOCIATION WITH A LINE OF STRONG
THUNDERSTORMS MOVING THROUGH THE AREA. 0.55 INCHES OF RAIN FELL
BETWEEN 947AM AND 955 AM...WITH 0.75 INCHES BETWEEN 947 AM AND 955
AM. THE 0.55 INCHES IN 4 MINUTES RATE WOULD EQUATE TO 8.25 INCHES
IN ONE HOUR IF IT HAD RAINED AT THIS RATE FOR AN ENTIRE HOUR. IN
TOTAL...1.29 INCHES OF RAIN FELL BETWEEN 700 AND 100 PM. THE
STRONGEST WIND GUST MEASURED AT THE AIRPORT DURING THIS TIME WAS
43 MPH.

Here is summary of additional heavy rain and wind reports from around the area:

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
151 PM CDT FRI JUL 22 2011

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

0530 AM     HEAVY RAIN       7 W ROCKTON             42.45N 89.21W
07/22/2011  M0.92 INCH       WINNEBAGO          IL   CO-OP OBSERVER

            MEASURED BY SHIRLAND CO-OP OBSERVER.

0630 AM     HEAVY RAIN       1 W BEACH PARK          42.42N 87.88W
07/22/2011  M2.19 INCH       LAKE               IL   COCORAHS

            STORM TOTAL SO FAR. 0.70 INCHES MEASURED IN THE PAST 60
            MINUTES. STANDING WATER AND DITCHES FILLING UP.

0700 AM     HEAVY RAIN       2 NE GURNEE             42.40N 87.91W
07/22/2011  M2.38 INCH       LAKE               IL   COCORAHS

0700 AM     HEAVY RAIN       BEACH PARK              42.42N 87.86W
07/22/2011  M2.06 INCH       LAKE               IL   ASOS

            SINCE 100 AM AT WAUKEGAN REGIONAL AIRPORT.

0700 AM     HEAVY RAIN       1 W BEACH PARK          42.42N 87.88W
07/22/2011  M1.49 INCH       LAKE               IL   COCORAHS

0700 AM     HEAVY RAIN       2 SE LAKEMOOR           42.32N 88.18W
07/22/2011  M1.69 INCH       LAKE               IL   COCORAHS

0700 AM     HEAVY RAIN       2 N WAUKEGAN            42.40N 87.87W
07/22/2011  M2.10 INCH       LAKE               IL   COCORAHS

0700 AM     HEAVY RAIN       5 NW WOODSTOCK          42.36N 88.51W
07/22/2011  M1.48 INCH       MCHENRY            IL   CO-OP OBSERVER

0700 AM     HEAVY RAIN       2 N SPRING GROVE        42.47N 88.24W
07/22/2011  M1.71 INCH       MCHENRY            IL   CO-OP OBSERVER

0700 AM     HEAVY RAIN       HARVARD                 42.42N 88.62W
07/22/2011  M1.17 INCH       MCHENRY            IL   CO-OP OBSERVER

0700 AM     HEAVY RAIN       2 W GURNEE              42.38N 87.98W
07/22/2011  M2.24 INCH       LAKE               IL   COCORAHS

0725 AM     HEAVY RAIN       WADSWORTH               42.44N 87.92W
07/22/2011  M2.80 INCH       LAKE               IL   BROADCAST MEDIA

            0.50 INCHES BETWEEN 655 AM AND 715 AM.

0745 AM     FLOOD            BEACH PARK              42.42N 87.86W
07/22/2011                   LAKE               IL   EMERGENCY MNGR

            NORTH SHERIDAN ROAD SOUTH OF WEST WADSWORTH ROAD CLOSED
            FROM 745 AM TO 100 PM DUE TO 7-8 INCHES OF STANDING WATER
            ON ROAD SURFACE.

0750 AM     HEAVY RAIN       3 ENE MACHESNEY PARK    42.38N 88.98W
07/22/2011  M1.09 INCH       WINNEBAGO          IL   COCORAHS

0755 AM     HEAVY RAIN       GURNEE                  42.38N 87.94W
07/22/2011  M3.25 INCH       LAKE               IL   PUBLIC

            STORM TOTAL SO FAR.

0800 AM     HEAVY RAIN       WINTHROP HARBOR         42.48N 87.83W
07/22/2011  M1.28 INCH       LAKE               IL   COCORAHS

0842 AM     HEAVY RAIN       4 NW ROCKFORD           42.31N 89.12W
07/22/2011  M1.37 INCH       WINNEBAGO          IL   CO-OP OBSERVER

            STORM TOTAL SO FAR. 0.95 INCHES BETWEEN 715 AM AND TIME
            OF REPORT.

0900 AM     HEAVY RAIN       ARLINGTON HEIGHTS       42.09N 87.98W
07/22/2011  E0.00 INCH       COOK               IL   TRAINED SPOTTER

            ESTIMATED 1 TO 2 INCHES.

0920 AM     HEAVY RAIN       3 NNE ELBURN            41.93N 88.45W
07/22/2011  M0.63 INCH       KANE               IL   COCORAHS

            IN 15 MINUTES.

0933 AM     TSTM WND GST     DUPAGE AIRPORT          41.92N 88.25W
07/22/2011  M45.00 MPH       DUPAGE             IL   ASOS
0945 AM     TSTM WND GST     ELMHURST                41.90N 87.94W
07/22/2011  M56.50 MPH       DUPAGE             IL   TRAINED SPOTTER

            MEASURED WITH A CAR ANEMOMETER. BRYAN MIDDLE SCHOOL AT
            YORK ROAD.

0947 AM     TSTM WND GST     OHARE AIRPORT           41.98N 87.90W
07/22/2011  M43.00 MPH       COOK               IL   ASOS

0953 AM     HEAVY RAIN       ARLINGTON HEIGHTS       42.09N 87.98W
07/22/2011  M1.00 INCH       COOK               IL   TRAINED SPOTTER

            IN 15 MINUTES UP TO TIME OF REPORT.

0955 AM     HEAVY RAIN       OHARE AIRPORT           41.98N 87.90W
07/22/2011  M0.75 INCH       COOK               IL   ASOS

            MEASURED IN 8 MINUTES BETWEEN 947AM AND 955 AM. 0.55
            INCHES FELL BETWEEN 947 AM AND 951 AM.

0957 AM     HEAVY RAIN       1 NNE BLOOMINGDALE      41.96N 88.08W
07/22/2011  M0.87 INCH       DUPAGE             IL   COCORAHS

            MEASURED IN 25 MINUTES UP TO TIME OF REPORT.

1000 AM     HEAVY RAIN       3 ESE PLAINFIELD        41.60N 88.15W
07/22/2011  M0.76 INCH       WILL               IL   COCORAHS

            IN THE PAST 30 MINUTES.

1000 AM     HEAVY RAIN       1 W ROSELLE             41.98N 88.10W
07/22/2011  M0.91 INCH       DUPAGE             IL   COCORAHS

            BETWEEN 940 AM AND 1000 AM.

1006 AM     TSTM WND GST     MIDWAY AIRPORT          41.78N 87.75W
07/22/2011  M54.00 MPH       COOK               IL   ASOS

1013 AM     HEAVY RAIN       ARLINGTON HEIGHTS       42.09N 87.98W
07/22/2011  M0.85 INCH       COOK               IL   TRAINED SPOTTER

            IN 30 MINUTES UP TO TIME OF REPORT. INTERSECTION OF HINTZ
            RD AND WINDSOR.

1015 AM     MARINE TSTM WIND 4 NE CHICAGO            41.92N 87.57W
07/22/2011  M50.00 MPH       LMZ741             IL   C-MAN STATION

            43 KNOT GUST MEASURED AT HARRISON-DEVER CRIB. 35
            KNOT...OR 40 MPH...SUSTAINED WINDS. ANEMOMETER 85 FEET
            ABOVE LAKE SURFACE.

1026 AM     HEAVY RAIN       MARENGO                 42.25N 88.60W
07/22/2011  E1.80 INCH       MCHENRY            IL   PUBLIC

            MEASURED...BUT FIRST 10-15 MINUTES EXTREMELY HEAVY RAIN
            WAS BLOWING SIDEWAYS...SO TOTAL MAY BE SLIGHTLY UNDER
            WHAT ACTUALLY OCCURRED.

1053 AM     TSTM WND GST     GARY                    41.60N 87.34W
07/22/2011  M54.00 MPH       LAKE               IN   AWOS

            MEASURED AT GARY AIRPORT.

1054 AM     HEAVY RAIN       PEOTONE                 41.33N 87.80W
07/22/2011  M0.61 INCH       WILL               IL   TRAINED SPOTTER

            HEAVY RAIN FALL IN 16 MINUTES.

1058 AM     HEAVY RAIN       ENE COUNTRYSIDE         41.78N 87.88W
07/22/2011  M1.30 INCH       COOK               IL   COCORAHS

            IN THE PAST 60 MINUTES. AT 1030 AM AND 1035 AM RAIN RATE
            WAS 5 INCHES PER HOUR.

1100 AM     MARINE TSTM WIND 3 NNW BURNS HARBOR      41.65N 87.15W
07/22/2011  M44.00 MPH       LMZ745             IN   C-MAN STATION

            38 KNOT GUST MEASURED AT BURNS HARBOR GLOS WEATHER
            STATION. ANEMOMETER HEIGHT 33 FEET.

1100 AM     HEAVY RAIN       ELBURN                  41.89N 88.47W
07/22/2011  M1.32 INCH       KANE               IL   TRAINED SPOTTER

            RAINFALL TOTAL 1.32 INCHES FROM 1 AM THROUGH 10 AM.

1140 AM     HEAVY RAIN       BERWYN                  41.84N 87.79W
07/22/2011  M1.02 INCH       COOK               IL   TRAINED SPOTTER

0100 PM     HEAVY RAIN       BEACH PARK              42.42N 87.86W
07/22/2011  M3.42 INCH       LAKE               IL   ASOS

            STORM TOTAL SINCE 100 AM AT WAUKEGAN REGIONAL AIRPORT.
            1.36 INCHES BETWEEN 700 AM AND 100 PM.

0100 PM     HEAVY RAIN       OHARE AIRPORT           41.98N 87.90W
07/22/2011  M1.49 INCH       COOK               IL   ASOS

            STORM TOTAL SINCE 100 AM. 1.29 INCHES BETWEEN 700 AM AND
            100 PM.

0102 PM     HEAVY RAIN       REMINGTON               40.76N 87.15W
07/22/2011  M0.63 INCH       JASPER             IN   TRAINED SPOTTER

            MEASURED IN 40 MINUTES.


&&

$$

RC


Return to News Archive

USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.