A cold front pushing into a very moist and unstable airmass triggered numerous severe thunderstorms on May 30, 2013.  Deep layer shear was moderate to strong and freezing levels were in the 11-12k foot level, which was ideal for large hail. The storms produced damaging winds, large hail and several weak tornadoes.  An EF1 tornado touched down in Andalusia, IL around 445 pm CDT and traveled due north. This weak tornado crossed the Mississippi River and moved through eastern sections of Buffalo, IA. Wind speeds were estimated to be 95 mph. Some large trees were snapped and uprooted along the path. Some of the fallen trees fell onto houses.  In extreme northeast Missouri, wind gusts estimated to be 70 mph produced heavy tree damage throughout Scotland County. Several outbuildings were damaged and about 30 power poles were snapped. The tree damage was mainly located between Bible Grove and Memphis.

Hail in MUSCATINE, IOWA
From 30-MAY-13 15:36:00 to 30-MAY-13 15:36:00 (CST-6)
Location: SWEETLAND CENTER
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Tornado in MUSCATINE, IOWA
From 30-MAY-13 15:10:00 to 30-MAY-13 15:12:00 (CST-6)
Location: CONESVILLE
Tornado F-scale: EF1
Property damage: 25.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

Large trees were snapped and uprooted along the path.  The roof of a mobile home was partially blown off.  The wind speed with this tornado were estimated to be around 95 mph.

Thunderstorm Wind in JONES, IOWA
From 30-MAY-13 16:15:00 to 30-MAY-13 16:15:00 (CST-6)
Location: MONTICELLO
Magnitude: 52.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Thunderstorm Wind in VAN BUREN, IOWA
From 30-MAY-13 14:19:00 to 30-MAY-13 14:19:00 (CST-6)
Location: BONAPARTE ARPT
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter reported 4 inch diameter trees down in Farmington.

Thunderstorm Wind in CLINTON, IOWA
From 30-MAY-13 16:32:00 to 30-MAY-13 16:32:00 (CST-6)
Location: ELVIRA
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Law enforcement reported a 10x15 foot building blown into the roadway in the northwest part of Clinton.

Thunderstorm Wind in SCOTT, IOWA
From 30-MAY-13 16:00:00 to 30-MAY-13 16:00:00 (CST-6)
Location: DAVENPORT ARPT
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

A 12 inch diameter tree was down with several 4 inch branches down in Davenport. Wind was estimated at 60 mph.

Thunderstorm Wind in VAN BUREN, IOWA
From 30-MAY-13 14:19:00 to 30-MAY-13 14:19:00 (CST-6)
Location: KEOSAUQUA
Magnitude: 60.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter reported several trees down in town with a uprooted 36 inch diameter tree blocking a road.  Numerous power lines were also down.

Thunderstorm Wind in LEE, IOWA
From 30-MAY-13 14:38:00 to 30-MAY-13 14:38:00 (CST-6)
Location: DONNELLSON
Magnitude: 53.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A 2 foot diameter tree was down in town with several small tree limbs blown down as well.

Thunderstorm Wind in HENRY, IOWA
From 30-MAY-13 14:40:00 to 30-MAY-13 14:40:00 (CST-6)
Location: MT PLEASANT
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A large tree limb about 10 inches in diameter along with several tree limbs down was reported by a spotter.

Thunderstorm Wind in JEFFERSON, IOWA
From 30-MAY-13 14:45:00 to 30-MAY-13 14:45:00 (CST-6)
Location: PLEASANT PLAIN
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter reported a carport lifted and tree branches blown down.

Thunderstorm Wind in LEE, IOWA
From 30-MAY-13 14:45:00 to 30-MAY-13 14:45:00 (CST-6)
Location: FT MADISON
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter reported power lines down in Fort Madison, along with some power poles on fire.

Thunderstorm Wind in HENRY, IOWA
From 30-MAY-13 14:52:00 to 30-MAY-13 14:52:00 (CST-6)
Location: NEW LONDON
Magnitude: 55.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A barn was severely damaged.

Thunderstorm Wind in DES MOINES, IOWA
From 30-MAY-13 15:00:00 to 30-MAY-13 15:00:00 (CST-6)
Location: LENOX PARK
Magnitude: 70.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

The emergency manager reported extreme straight-line winds downed numerous trees and bent over street signs.  Also, a steel frame building near Spirit Hollow blown down.

Thunderstorm Wind in LOUISA, IOWA
From 30-MAY-13 15:15:00 to 30-MAY-13 15:15:00 (CST-6)
Location: GRANDVIEW
Magnitude: 55.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter reported numerous branches down in Grandview.

Thunderstorm Wind in CLINTON, IOWA
From 30-MAY-13 16:15:00 to 30-MAY-13 16:15:00 (CST-6)
Location: CHARLOTTE
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter reported no power.

Thunderstorm Wind in CLINTON, IOWA
From 30-MAY-13 16:20:00 to 30-MAY-13 16:20:00 (CST-6)
Location: CLINTON MUNI ARPT
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter reported several tree limbs down along with a 6 inch diameter tree blocking a road.

Thunderstorm Wind in JACKSON, IOWA
From 30-MAY-13 16:30:00 to 30-MAY-13 16:30:00 (CST-6)
Location: SPRINGBROOK
Magnitude: 60.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter reported several trees down and siding blown off a house. Winds were estimated at 70 mph.

Thunderstorm Wind in JOHNSON, IOWA
From 30-MAY-13 15:20:00 to 30-MAY-13 15:20:00 (CST-6)
Location: IOWA CITY MUNI ARPT
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter reported damage at Lake Ridge Mobile Home Park with shingles blown off roofs.  Winds were estimated at 60 mph.

Thunderstorm Wind in SCOTT, IOWA
From 30-MAY-13 15:55:00 to 30-MAY-13 15:55:00 (CST-6)
Location: DAVENPORT
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter reported a 6 inch diameter tree limb was ripped from a healthy tree near the intersection of Warren Street and 8th Street in Davenport. Wind gusts were estimated to be at least 65 mph.

Thunderstorm Wind in SCOTT, IOWA
From 30-MAY-13 15:58:00 to 30-MAY-13 15:58:00 (CST-6)
Location: PANORAMA PARK
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

A NWS employee reported a 6 inch diameter tree limb down near Middle Road and the Chateau Knoll Apartments in Bettendorf.

Thunderstorm Wind in SCOTT, IOWA
From 30-MAY-13 15:58:00 to 30-MAY-13 15:58:00 (CST-6)
Location: DAVENPORT ARPT
Magnitude: 53.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

A large 8 inch diameter tree was uprooted.

Thunderstorm Wind in SCOTT, IOWA
From 30-MAY-13 16:00:00 to 30-MAY-13 16:00:00 (CST-6)
Location: DAVENPORT
Magnitude: 55.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

Numerous trees were down in Vander Veer Park in Davenport.

Thunderstorm Wind in JEFFERSON, IOWA
From 30-MAY-13 14:35:00 to 30-MAY-13 14:35:00 (CST-6)
Location: FAIRFIELD MUNI ARPT
Magnitude: 53.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Thunderstorm Wind in LEE, IOWA
From 30-MAY-13 14:55:00 to 30-MAY-13 14:55:00 (CST-6)
Location: FT MADISON MUNI ARPT
Magnitude: 50.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Thunderstorm Wind in DES MOINES, IOWA
From 30-MAY-13 15:00:00 to 30-MAY-13 15:00:00 (CST-6)
Location: (BRL)BURLINGTON MUNI
Magnitude: 70.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Thunderstorm Wind in SCOTT, IOWA
From 30-MAY-13 15:52:00 to 30-MAY-13 15:52:00 (CST-6)
Location: DAVENPORT
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter at Rockingham Road and Pine Street in Davenport as a shelf cloud passed over the area.

Thunderstorm Wind in MUSCATINE, IOWA
From 30-MAY-13 15:35:00 to 30-MAY-13 15:35:00 (CST-6)
Location: MUSCATINE
Magnitude: 65.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter estimated winds of 65 to 75 mph.

Thunderstorm Wind in CLINTON, IOWA
From 30-MAY-13 16:16:00 to 30-MAY-13 16:16:00 (CST-6)
Location: CHARLOTTE
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter measured 65 mph winds.

Hail in SCOTT, IOWA
From 30-MAY-13 14:39:00 to 30-MAY-13 14:39:00 (CST-6)
Location: PANORAMA PARK
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

Tornado in SCOTT, IOWA
From 30-MAY-13 15:45:00 to 30-MAY-13 15:47:00 (CST-6)
Location: BUFFALO
Tornado F-scale: EF1
Property damage: 100.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

An EF1 tornado touched down in Andalusia, IL around 445 pm CDT and traveled  north-northeast. This weak tornado crossed the Mississippi River from Rock Island County and moved into Scott County, IA through eastern sections of Buffalo, IA, affecting a few houses.  The primary impact was to the parks on the eastern edge of town. Wind speeds were estimated to be 95 mph. Some large trees were snapped and uprooted along the path. Some of the fallen trees fell onto houses.