Frigid Airmass to Bring Significantly Colder Temperatures; Snow Continues Downwind of the Great Lakes

A frigid cold airmass will bring significantly colder weather across the eastern two thirds of the country early this week. Record low temperatures are expected in the Southeast by Tuesday morning. Moderate to heavy lake effect snow will continue downwind of the Great Lakes through Monday. Several inches of snow accumulation is expected, including in portions of the Chicago Metro Read More >

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE CHICAGO IL
443 AM CDT WED JUL 8 2020

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

0100 PM     TSTM WND DMG     2 NW WINFIELD           41.43N 87.31W
07/07/2020                   LAKE               IN   PUBLIC           

            PHOTO OF TWO PINE TREES SNAPPED ABOUT 1-2 
            FEET UP FROM THEIR BASE FROM SOCIAL MEDIA. 
            TIME ESTIMATED BY RADAR. 

0130 PM     HAIL             3 NNE VALPARAISO        41.51N 87.04W
07/07/2020  E0.75 INCH       PORTER             IN   TRAINED SPOTTER  

            0.5 TO 0.75 INCH DIAMETER HAIL FALLING AT 
            TIME OF CALL. 

0533 PM     TSTM WND DMG     MOUNT PROSPECT          42.07N 87.94W
07/07/2020                   COOK               IL   PUBLIC           

            A LARGE TREE LIMB WAS BLOWN DOWN. VIDEO 
            SHARED ON TWITTER. 

0614 PM     TSTM WND GST     OHARE AIRPORT           41.98N 87.90W
07/07/2020  M60 MPH          COOK               IL   ASOS             

            MEASURED GUST TO 60 MPH. 

0620 PM     HAIL             FRANKLIN PARK           41.94N 87.86W
07/07/2020  E1.00 INCH       COOK               IL   TRAINED SPOTTER  

            SPOTTER REPORTED NICKEL SIZE HAIL FOR 
            SEVERAL MINUTES WITH QUARTER SIZE HAIL AS IT 
            ENDED. DURATION 620 PM TO 627 PM. 

0716 PM     TSTM WND DMG     HEBRON                  42.48N 88.43W
07/07/2020                   MCHENRY            IL   FIRE DEPT/RESCUE 

            A 5 FOOT DIAMETER TREE WAS BLOWN DOWN, WHICH 
            BROUGHT DOWN POWER LINES AND A UTILITY POLE. 
            TREE WAS DESCRIBED AS ROTTED. 

0836 PM     TSTM WND GST     DUPAGE AIRPORT          41.91N 88.26W
07/07/2020  M51 MPH          DUPAGE             IL   ASOS             

            MEASURED GUST TO 51 MPH. 

0914 PM     MARINE TSTM WIND 3 NE NAVY PIER          41.92N 87.57W
07/07/2020  M40 MPH          LMZ741             IL   C-MAN STATION    

            MEASURED GUST TO 40 MPH AT THE HARRISON 
            DEVER CRIB.

NWS Chicago Science & Past Events Page

LOT RSS Feed

Frigid Airmass to Bring Significantly Colder Temperatures; Snow Continues Downwind of the Great Lakes

July 7, 2020: Gusty Afternoon Storms; The Science of These Pulse Summer Storms