A strong weather system moved through the region, triggering showers and thunderstorms.  There were numerous reports of large hail, as well as damaging winds and three tornadoes.

Hail in FRANKLIN, MISSOURI
From 10-APR-13 13:45:00 to 10-APR-13 13:45:00 (CST-6)
Location: JEFFRIESBURG
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Hail in ST. CHARLES, MISSOURI
From 10-APR-13 14:35:00 to 10-APR-13 14:35:00 (CST-6)
Location: PORTAGE DES SIOUX
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Hail in FRANKLIN, MISSOURI
From 10-APR-13 17:47:00 to 10-APR-13 17:48:00 (CST-6)
Location: ROBERTSVILLE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in ST. LOUIS, MISSOURI
From 10-APR-13 17:54:00 to 10-APR-13 17:54:00 (CST-6)
Location: ALLENTON
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in CRAWFORD, MISSOURI
From 10-APR-13 17:55:00 to 10-APR-13 17:55:00 (CST-6)
Location: STEELVILLE
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Numerous trees blown down around town.

Thunderstorm Wind in CRAWFORD, MISSOURI
From 10-APR-13 18:00:00 to 10-APR-13 18:05:00 (CST-6)
Location: LEASBURG
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Several large trees and numerous tree limbs were blown down in Leasburg and Bourbon.

Thunderstorm Wind in GASCONADE, MISSOURI
From 10-APR-13 16:53:00 to 10-APR-13 16:53:00 (CST-6)
Location: GASCONADE
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A phone line was blown down in Gasconade.

Thunderstorm Wind in CRAWFORD, MISSOURI
From 10-APR-13 18:08:00 to 10-APR-13 18:08:00 (CST-6)
Location: BOURBON
Magnitude: 87.00 EG
Crop damage: 0.00K
Reported by: NWS Storm Survey

A microburst caused damage at a farm stead about 3 miles east northeast of Bourbon.  A barn was totally destroyed by winds that were estimated around 100 mph.  A nearby garage was heavily damaged.  Four large trees were uprooted and the house sustained damage due to the winds and flying debris from the trees.

Thunderstorm Wind in FRANKLIN, MISSOURI
From 10-APR-13 18:18:00 to 10-APR-13 18:19:00 (CST-6)
Location: SULLIVAN
Magnitude: 87.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

Another microburst caused significant tree damage in Meramec State Park.

Thunderstorm Wind in FRANKLIN, MISSOURI
From 10-APR-13 18:25:00 to 10-APR-13 18:28:00 (CST-6)
Location: GILDEHOUSE
Magnitude: 70.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A microburst started at the intersection of St. Johns Road and State Highway V and continued northeast to Wolf Hollow Golf Club, ending near Highway 100.  Significant tree damage was observed with many pine trees topped and/or snapped along with uprooted hardwood trees.  All of the damage pointed in the same northeast direction with wind speed estimated around 80 mph.

Thunderstorm Wind in ST. LOUIS (C), MISSOURI
From 10-APR-13 19:12:00 to 10-APR-13 19:12:00 (CST-6)
Location: TOWER GROVE
Magnitude: 65.00 EG
Crop damage: 0.00K
Reported by: NWS Storm Survey

Thunderstorm winds partially uplifted a large spruce tree onto a house on Sublette Avenue just south of Columbia Avenue.  Also, a home on Columbia Avenue, just east of Sublette Avenue, had minor roof damage.

Hail in ST. LOUIS, MISSOURI
From 10-APR-13 19:06:00 to 10-APR-13 19:06:00 (CST-6)
Location: TEMPO
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

One inch hail fell at Westport Plaza.

Thunderstorm Wind in ST. LOUIS, MISSOURI
From 10-APR-13 19:01:00 to 10-APR-13 19:02:00 (CST-6)
Location: ROBERTSON
Magnitude: 65.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

Thunderstorm winds on the south side of the tornado blew down numerous large trees, tree limbs and power lines.  Some caused minor damage to homes and businesses in the area.

Thunderstorm Wind in ST. LOUIS, MISSOURI
From 10-APR-13 19:01:00 to 10-APR-13 19:04:00 (CST-6)
Location: ROBERTSON
Magnitude: 70.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

Thunderstorm winds on the north side of the tornado blew down numerous large trees, tree limbs and power lines.  Some caused minor damage to homes and businesses in the area.

Thunderstorm Wind in ST. LOUIS, MISSOURI
From 10-APR-13 19:00:00 to 10-APR-13 19:00:00 (CST-6)
Location: SOUTH BELLEFONTAINE
Magnitude: 65.00 EG
Crop damage: 0.00K
Reported by: Newspaper

Thunderstorm winds blew off part of the roof of Shenandoah Valley Elementary School.  Six class rooms sustained both wind and water damage.  School was not in session, so no injuries reported.

Thunderstorm Wind in STE. GENEVIEVE, MISSOURI
From 10-APR-13 19:30:00 to 10-APR-13 19:30:00 (CST-6)
Location: ZELL
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Thunderstorm winds blew over a couple of empty semi trailers at a business on Kimmel Lake Road just south of Highway O.  A couple of large tree limbs were blown down as well.

Thunderstorm Wind in ST. LOUIS, MISSOURI
From 10-APR-13 19:03:00 to 10-APR-13 19:03:00 (CST-6)
Location: BURKE CITY
Magnitude: 65.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Thunderstorm winds blew down several power lines onto Interstates 270 and 170 causing both highways to be closed at the interchange.

Thunderstorm Wind in FRANKLIN, MISSOURI
From 10-APR-13 18:20:00 to 10-APR-13 18:23:00 (CST-6)
Location: KRAKOW
Magnitude: 61.00 EG
Crop damage: 0.00K
Reported by: NWS Storm Survey

A line of severe thunderstorms moved through the Union area.  Several large trees were blown down as well as numerous tree limbs.  A business on the north side of town had minor roof damage. A microburst occurred on the south side of town at the First Baptist Church.  The attached brick building had the majority of its metal roof peeled off with insulation thrown downwind toward the intersection of East Main Street and Highway 47.  Other small trees were observed to be snapped off in this area in addition to minor shingle damage to the roof of the church itself.  The estimated wind speed in this location was 70 mph.

Thunderstorm Wind in FRANKLIN, MISSOURI
From 10-APR-13 18:29:00 to 10-APR-13 18:29:00 (CST-6)
Location: VILLA RIDGE
Magnitude: 78.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

Two miles north of Villa Ridge, 18 power poles were snapped or lying on the ground along a three quarter of a mile stretch of Old Highway 100 between State Highway T and Mary Lane.  The damage was caused by a microburst.  The estimated wind speed at this location was 90 mph.

Thunderstorm Wind in FRANKLIN, MISSOURI
From 10-APR-13 18:37:00 to 10-APR-13 18:37:00 (CST-6)
Location: ST ALBANS
Magnitude: 65.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

Thunderstorm winds snapped and/or twisted off numerous large trees against the bluff. The lower brush was laying in convergent pattern to northeast.

Thunderstorm Wind in ST. CHARLES, MISSOURI
From 10-APR-13 18:30:00 to 10-APR-13 18:30:00 (CST-6)
Location: AUGUSTA
Magnitude: 56.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Thunderstorm Wind in ST. CHARLES, MISSOURI
From 10-APR-13 18:45:00 to 10-APR-13 18:45:00 (CST-6)
Location: WENTZVILLE
Magnitude: 56.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in ST. CHARLES, MISSOURI
From 10-APR-13 18:48:00 to 10-APR-13 18:50:00 (CST-6)
Location: DARDENNE
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm winds blew some siding off of a house near the intersection of Interstate 70 and Bryan Road.

Thunderstorm Wind in ST. CHARLES, MISSOURI
From 10-APR-13 18:46:00 to 10-APR-13 18:46:00 (CST-6)
Location: GILMORE
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm winds snapped a power pole on the east outer road just north of Dauphine Drive in Lake St. Louis.

Hail in OSAGE, MISSOURI
From 10-APR-13 15:49:00 to 10-APR-13 15:49:00 (CST-6)
Location: JUDGE
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in GASCONADE, MISSOURI
From 10-APR-13 16:25:00 to 10-APR-13 16:25:00 (CST-6)
Location: REDBIRD
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in GASCONADE, MISSOURI
From 10-APR-13 16:52:00 to 10-APR-13 16:52:00 (CST-6)
Location: PERSHING
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Golfball sized hail fell at the Rivers Edge Restaurant.

Hail in GASCONADE, MISSOURI
From 10-APR-13 16:55:00 to 10-APR-13 16:55:00 (CST-6)
Location: GASCONADE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in MONTGOMERY, MISSOURI
From 10-APR-13 17:00:00 to 10-APR-13 17:00:00 (CST-6)
Location: RHINELAND
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in ST. CHARLES, MISSOURI
From 10-APR-13 17:20:00 to 10-APR-13 17:20:00 (CST-6)
Location: WENTZVILLE
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in ST. CHARLES, MISSOURI
From 10-APR-13 18:55:00 to 10-APR-13 18:55:00 (CST-6)
Location: COTTLEVILLE
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm winds blew down a large tree branch and two large trees.

Thunderstorm Wind in ST. CHARLES, MISSOURI
From 10-APR-13 18:57:00 to 10-APR-13 18:57:00 (CST-6)
Location: ST CHARLES ARPT
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm winds peeled part of the siding off of two homes in New Town.

Thunderstorm Wind in ST. LOUIS, MISSOURI
From 10-APR-13 18:55:00 to 10-APR-13 18:55:00 (CST-6)
Location: POND
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm winds blew down numerous large trees and tree limbs in Homestead Estates.

Thunderstorm Wind in ST. CHARLES, MISSOURI
From 10-APR-13 19:00:00 to 10-APR-13 19:03:00 (CST-6)
Location: ORCHARD FARM
Magnitude: 65.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Thunderstorm winds blew down several large trees and tree limbs on Island Road north of intersection with Highway H.  Also, a number of power poles were blown down along Highway 94 between Portage Des Sioux and West Alton.  Highway 94 was shutdown for a time due to power poles and lines across the roadway.

Thunderstorm Wind in WASHINGTON, MISSOURI
From 10-APR-13 19:05:00 to 10-APR-13 19:05:00 (CST-6)
Location: CANNON MINES
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Thunderstorm winds blew a mobile home off its foundation, on Highway 21 just south of intersection with Highway 47.  No injuries reported.

Tornado in ST. LOUIS (C), MISSOURI
From 10-APR-13 19:10:00 to 10-APR-13 19:11:00 (CST-6)
Location: TOWER GROVE
Tornado F-scale: EF0
Crop damage: 0.00K
Reported by: NWS Storm Survey

A weak tornado touched down near the intersection of 59th Street and Reber Place in the city of St. Louis.  It moved to the northeast across Dalton and January Avenues before lifting along Columbia Avenue.  Many trees were snapped and numerous homes and garages/sheds were damaged along the path of the tornado.  The most extensive damage occurred to several homes and a garage near and just east of the intersection of January Avenue and Columbia Avenue.  One house on Columbia Avenue lost the entire east facing side of the roof.  Pieces of the roof and insulation were scattered north and east along Columbia Avenue.  Several cars were badly damaged along Columbia Avenue due to the falling debris.  No injuries were reported.  The overall rating for the tornado was EF0.  The maximum path width was 50 yards and the path length was a quarter of a mile.

Tornado in ST. LOUIS, MISSOURI
From 10-APR-13 19:00:00 to 10-APR-13 19:05:00 (CST-6)
Location: BRIDGETON
Tornado F-scale: EF2
Property damage: 4.00M
Crop damage: 0.00K
Reported by: NWS Storm Survey

The tornado began in Bridgeton on Pennridge Drive, just northeast of St. Charles Rock Road.  A skating rink in this location suffered EF-1 roof damage.  The tornado moved northeast causing sporadic EF-0 and EF-1 tree damage for about 3 miles crossing Highway 370 in the process. The tornado intensified to EF-2 strength in Hazelwood near Woodcrest Lane where the roof was torn off a home.  The tornado was also at its maximum width at this location reaching 500 yards wide.  Along Teson Road, north of Howdershell Road, 10 apartment buildings were damaged with 5 buildings losing portions of their roofs.  The tornado then turned a bit to the east and caused EF-2 damage at Lynn Haven Lane and Howdershell Road.  Two homes at this location lost most of their roofs. Also, across the street on the north side of Howdershell Road a strip mall had small portions of the roof removed, as well as glass windows and doors shattered.  Tree damage, EF-0 to EF-1 strength, occurred along Lamplight Lane, Coach Light Lane, Caposele Lane, and Gerardini Drive.  Several homes on these streets suffered roof damage from falling trees and large tree limbs.  The area from Lynn Haven Lane to Gerardini Drive had the highest concentration of damage.  As the tornado moved east northeast into Florissant sporadic EF-0 to EF-1 tree damage occurred to just east of St. Ferdinand Park along Beverly Drive.  Also, just south of St. Ferdinand Park, another strip mall at the intersection of Lindbergh Boulevard and St. Jean Street sustained minor roof damage. The tornado moved very fast, covering 6.75 miles in about 5 minutes.  Sporadic thunderstorm wind gust damage, mainly tress uprooted or large limbs downed, was noted north and south of the tornado track.  Several business signs were also damaged along Lindbergh Blvd. in Florissant.  Two people sustained minor injuries.  One had a broken leg and another just had some scrapes and bruises.  Almost 400 structures sustained some kind of damage.  Fifty five of these structures were either destroyed or sustained significant damage.  The tornado was rated EF-2 overall. The maximum path width was 500 yards and the path length was 6.75 miles.

Thunderstorm Wind in FRANKLIN, MISSOURI
From 10-APR-13 18:30:00 to 10-APR-13 18:31:00 (CST-6)
Location: GRAY SUMMIT
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

Thunderstorm winds caused minor roof damage to a motel on Highway 100 near intersection with Manor House Lane. Also, several large trees were blown down.  One large tree blocked Coleman Road just north of intersection with Highway 100.

Tornado in FRANKLIN, MISSOURI
From 10-APR-13 18:38:00 to 10-APR-13 18:39:00 (CST-6)
Location: ST ALBANS
Tornado F-scale: EF1
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A tornado touched down in the Labadie Bottoms, north of St. Albans and lifted after traversing, on a slightly curved path, for 1.5 miles east northeast across St. Albans Island.  Extensive tree damage was noted along the track. The overall damage was rated EF1.  The path length was 1.5 miles and the max damage width was 200 yards.

Thunderstorm Wind in FRANKLIN, MISSOURI
From 10-APR-13 18:15:00 to 10-APR-13 18:15:00 (CST-6)
Location: SULLIVAN
Magnitude: 88.00 MG
Crop damage: 0.00K
Reported by: AWOS

A microburst caused minor damage at Sullivan Regional Airport.  A small section of one hanger was removed with a door of a nearby hanger also sustaining damage.  Also, one private aircraft sustained minor damage.  The AWOS recorded a wind gust of 101 mph with this microburst. Further downstream the damage from the microburst was sporadic.  About a mile east southeast of the airport, south of I-44, the winds destroyed a vacant mobile home and caused considerable damage to 5 other mobile homes.  One of the mobile homes had a large tree land on it, but only caused minor roof damage.  No one was inside the destroyed mobile home at the time.  However, three residents of the trailer park were taken to the hospital with minor injuries and eight other people walked into the hospital to be treated for minor injuries as well.

Hail in FRANKLIN, MISSOURI
From 10-APR-13 17:53:00 to 10-APR-13 17:53:00 (CST-6)
Location: PACIFIC
Magnitude: 2.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Hail in MONTGOMERY, MISSOURI
From 10-APR-13 17:15:00 to 10-APR-13 17:15:00 (CST-6)
Location: NEW FLORENCE
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public