NWS
St. Louis, Missouri

June 8th, 2005 Severe Weather Event
Bowing Squall Line Resulting in Wind Damage
Across the Bi-State Region

Radar and Analysis:
Radar Reflectivity
from WSR-88D KLSX
(image loop)
Surface Map for
June 8th, 2005 at 10 am
Surface Map for
June 8th, 2005 at 5 pm
Surface Map for
June 8th, 2005 at 9 pm
Storm Reports for
June 8th, 2005
 
Severe Weather Assessment:
A line of strong to severe thunderstorms raced across portions of Eastern Missouri and Western Illinois the afternoon and evening of June 8th, 2005, producing damaging winds and large hail.

The thunderstorms began developing during the morning hours in Northwest Missouri along the southern edge of an outflow boundary associated with a nocturnal thunderstorm complex over Iowa. With the atmosphere ahead of the boundary very warm and unstable the thunderstorms intensified from Southeast Iowa through Northern Missouri during the early afternoon hours as the boundary encountered the unstable air.

The thunderstorms eventually developed into a large bowing squall line over Northeast Missouri and Western Illinois and moved southeast through the Bi-State region into the early evening hours. Damaging winds of 60 to 65 mph accompanying portions of the squall line resulted in numerous downed tree limbs and trees
 
Preliminary Storm Reports for June 8th:
PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE ST LOUIS MO
910 PM CDT WED JUN 08 2005
TIME (DATE)

0135 PM (06/08/2005)

0145 PM (06/08/2005)

0150 PM (06/08/2005)

0150 PM (06/08/2005)

0205 PM (06/08/2005)


0220 PM (06/08/2005)


0225 PM (06/08/2005)

0235 PM (06/08/2005)

0240 PM (06/08/2005)


0245 PM (06/08/2005)

0250 PM (06/08/2005)

0250 PM (06/08/2005)


0305 PM (06/08/2005)

0325 PM (06/08/2005)

0325 PM (06/08/2005)

0330 PM (06/08/2005)

0340 PM (06/08/2005)

0344 PM (06/08/2005)

0350 PM (06/08/2005)

0355 PM (06/08/2005)

0355 PM (06/08/2005)

0355 PM (06/08/2005)

0400 PM (06/08/2005)

0400 PM (06/08/2005)


0400 PM (06/08/2005)

0403 PM (06/08/2005)


0405 PM (06/08/2005)

0410 PM (06/08/2005)

0415 PM (06/08/2005)


0420 PM (06/08/2005)


0425 PM (06/08/2005)

0440 PM (06/08/2005)

0505 PM (06/08/2005)

0515 PM (06/08/2005)

0515 PM (06/08/2005)

0530 PM (06/08/2005)

0530 PM (06/08/2005)
LOCATION (COUNTY)

KNOX CITY (KNOX MO)

QUINCY (ADAMS IL)

QUINCY (ADAMS IL)

SHELBINA (SHELBY MO)

HANNIBAL (MARION MO)


HANNIBAL (MARION MO)


NEW LONDON (RALLS MO)

FRANKFORD (PIKE MO)

PLEASANT HILL (PIKE IL)


CURRYVILLE (PIKE MO)

CENTRALIA (BOONE MO)

BOWLING GREEN (PIKE MO)


CENTRALIA (BOONE MO)

COLUMBIA (BOONE MO)

5 N COLUMBIA (BOONE MO)

COLUMBIA (BOONE MO)

COLUMBIA (BOONE MO)

11 NE ST. CHARLES (ST. CHARLES MO)

FULTON (CALLAWAY MO)

JERSEYVILLE (JERSEY IL)

DANVILLE (MONTGOMERY MO)

KEMPER (JERSEY IL)

ST. CHARLES (ST. CHARLES MO)

MEDORA (MACOUPIN IL)


3 NW ST. CHARLES (ST. CHARLES MO)

GODFREY (MADISON IL)


ST. PETERS (ST. CHARLES MO)

MONTGOMERY CITY (MONTGOMERY MO)

WILDWOOD (ST. LOUIS MO)


4 NE STAUNTON (MACOUPIN IL)


PONTOON BEACH (MADISON IL)

NEW DOUGLAS (MADISON IL)

FREEBURG (ST. CLAIR IL)

O'FALLON (ST. CLAIR IL)

NEW ATHENS (ST. CLAIR IL)

MARISSA (ST. CLAIR IL)

TILDEN (RANDOLPH IL)
EVENT

TSTM WND DMG

TSTM WND GST

TSTM WND DMG

TSTM WND DMG

TSTM WND DMG


TSTM WND DMG


TSTM WND DMG

TSTM WND DMG

TSTM WND GST


TSTM WND DMG

0.75 INCH HAIL

TSTM WND DMG


0.88 INCH HAIL

1.00 INCH HAIL

0.75 INCH HAIL

1.00 INCH HAIL

1.25 INCH HAIL

TSTM WND GST

1.00 INCH HAIL

TSTM WND DMG

0.75 INCH HAIL

TSTM WND DMG

TSTM WND DMG

TSTM WND DMG


TSTM WND DMG

TSTM WND DMG


TSTM WND DMG

TSTM WND DMG

TSTM WND DMG


TSTM WND DMG


TSTM WND DMG

TSTM WND DMG

TSTM WND DMG

TSTM WND GST

TSTM WND DMG

TSTM WND DMG

TSTM WND DMG
REMARKS

TREE LIMBS DOWN

TREE LIMBS DOWN

NUMEROUS TREE LIMBS AND A FEW TREES DOWN

LARGE TREE BLOWN DOWN IN BACKYARD

SEVERAL LARGE TREES DOWN...NUMEROUS TREE LIMBS DOWN...MINOR DAMAGE TO A HOUSE

A TREE FELL ON HOUSE LOCATED ON VERMONT STREET IN HANNIBAL

SMALL TREE LIMBS BLOWN DOWN

REPORTED BY TRAINED SPOTTER

NUMEROUS TREES DOWN, SOME BLOCKING ROADS AND KNOCKING DOWN POWERLINES

REPORTED BY TRAINED SPOTTER

REPORTED BY TRAINED SPOTTER

NUMEROUS LARGE TREE LIMBS DOWN ON THE NORTH SIDE OF TOWN

REPORTED BY TRAINED SPOTTER

REPORTED BY LAW ENFORCEMENT

REPORTED BY TRAINED SPOTTER

REPORTED BY TRAINED SPOTTER

REPORTED BY AMATEUR RADIO

ASOS SITE REPORTED GUSTS OF 62 MPH

REPORTED BY TRAINED SPOTTER

SEMI BLOWN OVER BY HIGH WINDS

REPORTED BY LAW ENFORCEMENT

TREE LIMBS BLOWN DOWN

NUMEROUS LARGE TREE LIMBS DOWN

ROOF BLOWN OFF POST OFFICE IN MEDORA. WIND DAMAGE TO A SHED.

SEVERAL LARGE TREES DOWN

LARGE BRANCHES BROKEN OUT OF TREES. ESTIMATED DIAMETER OF 6 INCHES OR MORE.

NUMEROUS LARGE TREE LIMBS DOWN

TREE LIMBS AND POWER LINES DOWN

AT INTERSECTION OF HWY 100 AND 109 LARGE BRANCHES DOWN. WINDS ESTIMATED AT 60 MPH.

ROOF BLOWN OFF OF A POST OFFICE IN SAWYERVILLE

LARGE TREE LIMBS AND POWER LINES DOWN

TREE DOWN

POWER LINES BLOWN DOWN

ALSO SOME LINES DOWN AND TREE LIMBS

POWER LINES BLOWN DOWN.

LARGE TREE LIMBS AND POWER LINES DOWN

2 FOOT DIAMETER TREE DOWNED BY GUST FRONT

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