June 22, 2011 Severe Weather Event

A very moist unstable airmass was in place across southeast Michigan as a warm front had passed through the area the previous night. Storms developed out to the west along a cold front and moved through the area as an organized line of storms during the afternoon hours.  Numerous reports of tree damage were associated with the damaging wind gusts, with a few reports of large hail.  Heavy rains produced some flooding in St. Clair County which continued during the overnight hours.  A map and list of the severe weather reports are listed below.

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
930 PM EDT WED JUN 22 2011

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

0200 PM     TSTM WND DMG     2 SSW CEMENT CITY       42.04N 84.35W
06/22/2011                   LENAWEE            MI   BROADCAST MEDIA

            DEBRIS AND TREE LIMBS DOWN AT HWY 127 AND 223.

0225 PM     TSTM WND DMG     1 SSW SAGINAW           43.40N 83.96W
06/22/2011                   SAGINAW            MI   TRAINED SPOTTER

            NUMEROUS 6 TO 8 INCH TREES DOWN AND PENNY TO NICKEL SIZED
            HAIL

0230 PM     TSTM WND DMG     2 S SAGINAW             43.39N 83.95W
06/22/2011                   SAGINAW            MI   TRAINED SPOTTER

            TWO 15 INCH TREES DOWN NEAR WASHINGTON ROAD

0238 PM     TSTM WND DMG     BYRON                   42.83N 83.95W
06/22/2011                   SHIAWASSEE         MI   BROADCAST MEDIA

            LARGE TREE DOWN

0256 PM     TSTM WND DMG     3 SSW SWARTZ CREEK      42.93N 83.85W
06/22/2011                   GENESEE            MI   TRAINED SPOTTER

            MANY TREES DOWN ACROSS ROADS AND HOUSES AT SEYMOUR ROAD
            BETWEEN HILL AND REID ROADS.

0320 PM     TSTM WND GST     WHITE LAKE              42.65N 83.50W
06/22/2011  M59.00 MPH       OAKLAND            MI   OFFICIAL NWS OBS

            RECORDED AT NWS STATION.

0334 PM     TSTM WND DMG     SEBEWAING               43.73N 83.45W
06/22/2011                   HURON              MI   LAW ENFORCEMENT

            3 TO 4 INCH DIAMETER BRANCHES DOWN

0343 PM     TSTM WND DMG     1 E FAIRGROVE           43.52N 83.52W
06/22/2011                   TUSCOLA            MI   TRAINED SPOTTER

            MANY SMALL TREE BRANCHES DOWN AND HEAVY RAIN. WIND SPEED
            ESTIMATED TO 60 MPH.

0343 PM     TSTM WND DMG     3 SE LAPEER             43.02N 83.28W
06/22/2011                   LAPEER             MI   TRAINED SPOTTER

            BARN ROOF TORN OFF

0400 PM     HAIL             WASHINGTON              42.72N 83.04W
06/22/2011  E1.50 INCH       MACOMB             MI   TRAINED SPOTTER

            FUNNEL CLOUD ALSO REPORTED

0400 PM     MARINE TSTM WIND 10 SE AU GRES           43.93N 83.57W
06/22/2011  M54.00 MPH       LHZ422             MI   ASOS

0420 PM     HAIL             ARMADA                  42.84N 82.88W
06/22/2011  E1.25 INCH       MACOMB             MI   BROADCAST MEDIA

0437 PM     HAIL             6 N RICHMOND            42.90N 82.75W
06/22/2011  E1.00 INCH       MACOMB             MI   LAW ENFORCEMENT

            REPORTED BY MEMPHIS FIRE DEPARTMENT

0444 PM     TSTM WND GST     2 SW SWARTZ CREEK       42.94N 83.86W
06/22/2011  M74.00 MPH       GENESEE            MI   AMATEUR RADIO

0445 PM     TSTM WND GST     FLINT                   43.02N 83.69W
06/22/2011  M75.00 MPH       GENESEE            MI   TRAINED SPOTTER

            MEASURED AT MOTT COMMUNITY COLLEGE

0446 PM     TSTM WND GST     BURT                    43.24N 83.91W
06/22/2011  M62.00 MPH       SAGINAW            MI   TRAINED SPOTTER

0446 PM     TSTM WND DMG     HUNTINGTON WOODS        42.48N 83.17W
06/22/2011                   OAKLAND            MI   AMATEUR RADIO

            18 INCH DIAMETER TREE FELL ON CAR

0458 PM     TSTM WND DMG     FRANKENMUTH             43.33N 83.74W
06/22/2011                   SAGINAW            MI   AMATEUR RADIO

            12 TO 18 INCH TREE LIMB DOWN ON MAPLE ROAD

0459 PM     FUNNEL CLOUD     RUBY                    43.04N 82.61W
06/22/2011                   ST. CLAIR          MI   AMATEUR RADIO

            ALSO REPORTED IN MEMPHIS AT 430 PM

0500 PM     TSTM WND DMG     S BAY CITY              43.58N 83.89W
06/22/2011                   BAY                MI   911 CALL CENTER

            LARGE TREE LIMBS DOWN

0510 PM     TSTM WND GST     CLINTION TOWNSHIP       42.59N 82.92W
06/22/2011  E65.00 MPH       MACOMB             MI   TRAINED SPOTTER

0524 PM     TSTM WND DMG     LAKEPORT                43.12N 82.50W
06/22/2011                   ST. CLAIR          MI   911 CALL CENTER

            TREES AND POWER LINES DOWN ACROSS NORTH EAST ST. CLAIR
            COUNTY NEAR LAKEPORT

0530 PM     MARINE TSTM WIND 12 NNW BAY PARK         43.81N 83.72W
06/22/2011  M48.00 MPH       LHZ422             MI   BUOY

            RECORDED AT SAGINAW BAY LIGHT

0540 PM     TSTM WND DMG     4 NNW ALMONT            42.97N 83.09W
06/22/2011                   LAPEER             MI   AMATEUR RADIO

            HIGH WINDS WITH SMALL TREES DOWN

0600 PM     MARINE TSTM WIND 8 ESE AU GRES           44.02N 83.54W
06/22/2011  M56.00 MPH       LHZ421             MI   C-MAN STATION

            OBSERVATION AT GRAVELLY SHOALS LIGHT

0600 PM     FLASH FLOOD      WADHAMS                 42.99N 82.54W
06/22/2011                   ST. CLAIR          MI   911 CALL CENTER

            MULTIPLE ROADS CLOSED AND SOME ROADS COLLAPSING IN ST.
            CLAIR COUNTY GENERALLY ALONG AND NORTH OF I-69

0617 PM     TSTM WND DMG     4 NE MACOMB TOWNSHIP    42.72N 82.88W
06/22/2011                   MACOMB             MI   911 CALL CENTER

            ONE TREE DOWN

0630 PM     TSTM WND DMG     3 SSE MOUNT CLEMENS     42.55N 82.85W
06/22/2011                   MACOMB             MI   911 CALL CENTER

            ONE TREE DOWN

0635 PM     FLASH FLOOD      MONROE                  41.92N 83.39W
06/22/2011                   MONROE             MI   TRAINED SPOTTER

            6 TO 8 INCHES OF WATER OVER ROADS

0649 PM     FLASH FLOOD      SHELBY TOWNSHIP         42.67N 83.03W
06/22/2011                   MACOMB             MI   TRAINED SPOTTER

            ONE INCH OF RAIN IN TWENTY MINUTES, 23 MILE ROAD IS
            IMPASSABLE