September 3, 2011 Severe Weather

In the late afternoon and evening of September 3, 2011 several thunderstorms fired up ahead of a cold front that was draped across lower Michigan. Outflow boundaries from previous storms in the day provided the lift required to set these storms in motion. Many areas saw brief heavy downpours, but the areas hardest hit with strong winds and hail were along I-94 from Ann Arbor all the way to downtown Detroit.

000
NWUS53 KDTX 040316
LSRDTX

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
1115 PM EDT SAT SEP 03 2011

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

0639 PM     TSTM WND GST     3 SE DEXTER             42.30N 83.84W
09/03/2011  E55.00 MPH       WASHTENAW          MI   TRAINED SPOTTER

            SMALL BRANCHES DOWN.

0650 PM     TSTM WND DMG     RIVER ROUGE             42.27N 83.12W
09/03/2011                   WAYNE              MI   BROADCAST MEDIA

            DAMAGE TO STRUCTURES AT RIVER ROUGE DAYS FESTIVAL. 8 TO
            10 INJURIES REPORTED BY POLICE...NONE LIFE THREATENING.
            MULTIPLE FESTIVAL TENTS BLOWN OVER. VENDER TRAILERS MOVED
            OFF JACKS, TREES AND LIMBS DOWN THROUGHOUT CITY.

0741 PM     TSTM WND DMG     2 N MANCHESTER          42.18N 84.04W
09/03/2011                   WASHTENAW          MI   LAW ENFORCEMENT

            NUMEROUS TREES, LIMBS, AND POWERLINES DOWN IN ROADWAY.

0746 PM     TSTM WND DMG     4 N DEXTER              42.38N 83.87W
09/03/2011                   WASHTENAW          MI   LAW ENFORCEMENT

            LARGE TREE IN ROAD

0750 PM     TSTM WND DMG     1 W ANN ARBOR           42.28N 83.75W
09/03/2011                   WASHTENAW          MI   CO-OP OBSERVER

            ARM-SIZED TREE BRANCH DOWN.

0802 PM     TSTM WND DMG     5 W ANN ARBOR           42.29N 83.83W
09/03/2011                   WASHTENAW          MI   AMATEUR RADIO

            8 INCH DIAMETER TREE DOWN.

0841 PM     TSTM WND GST     FERNDALE                42.46N 83.13W
09/03/2011  E60.00 MPH       OAKLAND            MI   AMATEUR RADIO

            MULTIPLE REPORTS OF 60 MPH WIND ESTIMATES AND POWER
            OUTAGES THROUGH ROYAL OAK AND MADISON HEIGHTS.