The seasons first major severe weather event took place as a strong upper level low pressure lifted north into the central U.S.  This was ahead of a strong upper level low pressure system over the southwest U.S.  A warm front lifted north across the Des Moines CWA with moist and unstable air pushing into the state.  There were several rounds of convection.  The first developed over northern Iowa during the mid afternoon hours and moved north into Minnesota.  A break in the thunderstorm activity took place before the next round moved into southwest Iowa and spread north and east during the evening.  The atmosphere became unstable with highs in the 80s and dewpoints in the low to mid 60s by afternoon.  CAPE, though not excessive, was sufficient with 1000 to 3000 J/kg available.  CAPE in the -10 to -30 C layer of the atmosphere was between 300 and 600 J/kg.  In the late afternoon hours around 500 J/kg of downdraft CAPE was present, and it increased to around 900 to 1100 J/kg during the evening hours. The shear increased as well with 25 to 40 kts available at the beginning of the event, and 50 to 60 kts by the end.  Precipitable water values increased to 1.2 to 1.5 inches.  The LCL was relatively low, around 1000 meters.  The freezing level was relatively low, around 11,900 feet.  The storms produced heavy rain and large hail initially.  Flash flooding occurred first in Crawford County in western Iowa with over two inches of rainfall in about an hour, causing water to flow over Highway 141.  The event became a wind and hail event for the most part with winds gusting to 60 to 80 MPH across a large part of the CWA and hail up to 3 inches in diameter in Adams County.  The largest hail was northwest of Carbon in Adams County, where 2 to 3 inch diameter hail fell.  Reports indicated enough hail fell to completely cover the ground. Numerous reports of 1.5 inch hail were received.  Three tornadoes touched down in central Iowa. Numerous reports of winds of 60 to 80 MPH were received all along the line of thunderstorms.  High winds blew a semi truck off the highway and blew it over west of Earlham in Madison County.  There was considerable tree damage reported with some damage to outbuilding, barns, and a few houses.

Hail in ADAMS, IOWA
From 19-MAY-13 16:13:00 to 19-MAY-13 16:13:00 (CST-6)
Location: CARBON
Magnitude: 2.50 
Property damage: 50.00K
Crop damage: 5.00K
Reported by: Trained Spotter

Hail completely covered the ground.

Hail in CRAWFORD, IOWA
From 19-MAY-13 15:20:00 to 19-MAY-13 15:20:00 (CST-6)
Location: KENWOOD
Magnitude: 1.00 
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in POLK, IOWA
From 19-MAY-13 18:10:00 to 19-MAY-13 18:10:00 (CST-6)
Location: ANKENY
Magnitude: 52.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Six inch diameter trees blown down by high winds.

Thunderstorm Wind in STORY, IOWA
From 19-MAY-13 18:10:00 to 19-MAY-13 18:10:00 (CST-6)
Location: KELLEY
Magnitude: 55.00 EG
Property damage: 30.00K
Crop damage: 0.00K
Reported by: NWS Employee

Top of grain bin crushed.

Hail in JASPER, IOWA
From 19-MAY-13 19:33:00 to 19-MAY-13 19:33:00 (CST-6)
Location: NEWBURG
Magnitude: 1.00 
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Public

Flash Flood in CRAWFORD, IOWA
From 19-MAY-13 17:15:00 to 19-MAY-13 17:30:00 (CST-6)
Location: KENWOOD
Flood cause: Heavy Rain
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Law Enforcement

The Crawford County dispatch reported water briefly over Highway 141 and some gravel roads in the area due to over 2 inches of rainfall.  Conditions improved quickly after the rain ended.

Funnel Cloud in SAC, IOWA
From 19-MAY-13 16:24:00 to 19-MAY-13 16:24:00 (CST-6)
Location: ULMER
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

The Sac County Deputy reported a funnel cloud near the town of Ulmer, or 4 miles east and 3 miles south of Lake View.

Funnel Cloud in MARSHALL, IOWA
From 19-MAY-13 18:48:00 to 19-MAY-13 18:48:00 (CST-6)
Location: CLEMONS
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in BREMER, IOWA
From 19-MAY-13 19:52:00 to 19-MAY-13 19:52:00 (CST-6)
Location: PLAINFIELD
Magnitude: 52.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Public

Public estimate of 60 MPH winds.

Thunderstorm Wind in BREMER, IOWA
From 19-MAY-13 19:54:00 to 19-MAY-13 19:54:00 (CST-6)
Location: WAVERLY
Magnitude: 52.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Social Media

Eight inch diameter tree branches were snapped at Bremer Ave and 8th St.

Thunderstorm Wind in WAPELLO, IOWA
From 19-MAY-13 20:45:00 to 19-MAY-13 20:45:00 (CST-6)
Location: OTTUMWA
Magnitude: 52.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A light pole was blown down on Ferry Street.

Thunderstorm Wind in DAVIS, IOWA
From 19-MAY-13 20:45:00 to 19-MAY-13 20:45:00 (CST-6)
Location: FLORIS
Magnitude: 61.00 EG
Property damage: 75.00K
Crop damage: 0.00K
Reported by: Public

Tin blown off barns and sheds blown down.

Funnel Cloud in GRUNDY, IOWA
From 19-MAY-13 19:17:00 to 19-MAY-13 19:17:00 (CST-6)
Location: GRUNDY CENTER
Property damage: 0.00K
Crop damage: 0.00K
Reported by: State Official

Heavy Rain in CRAWFORD, IOWA
From 19-MAY-13 15:24:00 to 19-MAY-13 16:24:00 (CST-6)
Location: KENWOOD
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Estimate of 2 inches of rain in the past hour.  On Highway 141 east of Charter Oak, a spotter saw water pouring out of the fields into ditches, but no flood impacts at that time.

Thunderstorm Wind in POLK, IOWA
From 19-MAY-13 18:07:00 to 19-MAY-13 18:07:00 (CST-6)
Location: ANKENY
Magnitude: 65.00 MG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Thunderstorm Wind in APPANOOSE, IOWA
From 19-MAY-13 20:05:00 to 19-MAY-13 20:05:00 (CST-6)
Location: CENTERVILLE
Magnitude: 55.00 MG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: AWOS

Thunderstorm Wind in MAHASKA, IOWA
From 19-MAY-13 20:53:00 to 19-MAY-13 20:53:00 (CST-6)
Location: OSKALOOSA MUNI ARPT
Magnitude: 52.00 MG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in POLK, IOWA
From 19-MAY-13 17:56:00 to 19-MAY-13 17:56:00 (CST-6)
Location: RIDER
Magnitude: 54.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

From a Schoolnet site.

Thunderstorm Wind in POLK, IOWA
From 19-MAY-13 18:06:00 to 19-MAY-13 18:06:00 (CST-6)
Location: ANKENY
Magnitude: 54.00 MG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Mesonet

From a Schoolnet site.

Thunderstorm Wind in POLK, IOWA
From 19-MAY-13 18:00:00 to 19-MAY-13 18:00:00 (CST-6)
Location: POLK CITY
Magnitude: 52.00 MG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Mesonet

From a Schoolnet site.

Thunderstorm Wind in MARSHALL, IOWA
From 19-MAY-13 19:12:00 to 19-MAY-13 19:12:00 (CST-6)
Location: MARSHALLTOWN ARPT
Magnitude: 52.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Hail in ADAMS, IOWA
From 19-MAY-13 16:15:00 to 19-MAY-13 16:15:00 (CST-6)
Location: CARBON
Magnitude: 3.00 
Property damage: 50.00K
Crop damage: 5.00K
Reported by: Social Media

Two to three inch hail received via social media.

Hail in ADAMS, IOWA
From 19-MAY-13 17:26:00 to 19-MAY-13 17:26:00 (CST-6)
Location: PRESCOTT
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Hail in DALLAS, IOWA
From 19-MAY-13 17:40:00 to 19-MAY-13 17:40:00 (CST-6)
Location: ORTONVILLE
Magnitude: 1.00 
Property damage: 5.00K
Crop damage: 0.00K
Reported by: NWS Employee

Quarter size hail with zero visibility.  Strong winds taking down numerous tree limbs.

Hail in WEBSTER, IOWA
From 19-MAY-13 17:20:00 to 19-MAY-13 17:20:00 (CST-6)
Location: (FOD)FT DODGE MUNI A
Magnitude: 1.00 
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Hail in DALLAS, IOWA
From 19-MAY-13 17:43:00 to 19-MAY-13 17:43:00 (CST-6)
Location: ADEL
Magnitude: 1.25 
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Hail in POLK, IOWA
From 19-MAY-13 18:20:00 to 19-MAY-13 18:20:00 (CST-6)
Location: IVY
Magnitude: 1.00 
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in WARREN, IOWA
From 19-MAY-13 17:51:00 to 19-MAY-13 17:51:00 (CST-6)
Location: NEW VIRGINIA
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Hail in POLK, IOWA
From 19-MAY-13 18:16:00 to 19-MAY-13 18:16:00 (CST-6)
Location: ANKENY
Magnitude: 1.00 
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in BREMER, IOWA
From 19-MAY-13 19:52:00 to 19-MAY-13 19:52:00 (CST-6)
Location: PLAINFIELD
Magnitude: 1.00 
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Public

Hail in JASPER, IOWA
From 19-MAY-13 18:48:00 to 19-MAY-13 18:48:00 (CST-6)
Location: CLYDE
Magnitude: 1.00 
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in DALLAS, IOWA
From 19-MAY-13 17:55:00 to 19-MAY-13 17:55:00 (CST-6)
Location: SHULER MINE
Magnitude: 1.75 
Property damage: 15.00K
Crop damage: 5.00K
Reported by: Emergency Manager

Hail in WARREN, IOWA
From 19-MAY-13 17:48:00 to 19-MAY-13 17:48:00 (CST-6)
Location: NEW VIRGINIA
Magnitude: 1.75 
Property damage: 25.00K
Crop damage: 5.00K
Reported by: Emergency Manager

Thunderstorm Wind in MADISON, IOWA
From 19-MAY-13 17:33:00 to 19-MAY-13 17:33:00 (CST-6)
Location: EARLHAM
Magnitude: 52.00 EG
Property damage: 15.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Semi blown over by high winds.

Thunderstorm Wind in MADISON, IOWA
From 19-MAY-13 17:30:00 to 19-MAY-13 17:30:00 (CST-6)
Location: EARLHAM
Magnitude: 61.00 EG
Property damage: 100.00K
Crop damage: 0.00K
Reported by: NWS Employee

A trailer park west to southwest of Earlham with 6 to 8 units was damaged.  One unit had a missing roof.  Multiple trees were down throughout town.

Thunderstorm Wind in DALLAS, IOWA
From 19-MAY-13 17:43:00 to 19-MAY-13 17:43:00 (CST-6)
Location: SHULER MINE
Magnitude: 70.00 EG
Property damage: 75.00K
Crop damage: 0.00K
Reported by: County Official

A roof was damaged with structural damage to a building was reported.

Thunderstorm Wind in MADISON, IOWA
From 19-MAY-13 17:30:00 to 19-MAY-13 17:30:00 (CST-6)
Location: EARLHAM
Magnitude: 61.00 EG
Property damage: 30.00K
Crop damage: 0.00K
Reported by: NWS Employee

Trees and power lines were down west of Earham.  Two to three poles were snapped.  A shed was blown over with about 30 small pieces of wood spread across the field.

Thunderstorm Wind in HUMBOLDT, IOWA
From 19-MAY-13 17:24:00 to 19-MAY-13 17:24:00 (CST-6)
Location: THOR
Magnitude: 55.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Large tree limbs broken and blown 100 yards.

Thunderstorm Wind in HANCOCK, IOWA
From 19-MAY-13 13:10:00 to 19-MAY-13 13:10:00 (CST-6)
Location: HAYFIELD
Magnitude: 61.00 EG
Property damage: 75.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Damage just north of Highway 18 along Nash Ave and 260th Street.  Lots of 6 inches or larger branches down and a few power poles leaning.  Damage to a couple of grain bins and a few metal shed roofs peeled.

Thunderstorm Wind in DALLAS, IOWA
From 19-MAY-13 17:48:00 to 19-MAY-13 17:48:00 (CST-6)
Location: DALLAS CENTER
Magnitude: 55.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Eighteen inch diameter tree limbs were blown down in Highway 44 and S Avenue east of Dallas Center.

Thunderstorm Wind in DALLAS, IOWA
From 19-MAY-13 17:43:00 to 19-MAY-13 17:43:00 (CST-6)
Location: SHULER MINE
Magnitude: 70.00 EG
Property damage: 75.00K
Crop damage: 0.00K
Reported by: Amateur Radio

A house lost about three-quarters of its roof on County Highway R22 south of Highway 44.

Thunderstorm Wind in DALLAS, IOWA
From 19-MAY-13 17:38:00 to 19-MAY-13 17:38:00 (CST-6)
Location: ADEL
Magnitude: 52.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Pea to marble size hail as well.

Thunderstorm Wind in MADISON, IOWA
From 19-MAY-13 17:30:00 to 19-MAY-13 17:30:00 (CST-6)
Location: EARLHAM
Magnitude: 70.00 EG
Property damage: 70.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Roof blown off of a house.

Thunderstorm Wind in STORY, IOWA
From 19-MAY-13 18:27:00 to 19-MAY-13 18:27:00 (CST-6)
Location: IOWA CENTER
Magnitude: 52.00 EG
Property damage: 3.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A few large 8 inch diameter and 20 feet long tree limbs down.

Thunderstorm Wind in POLK, IOWA
From 19-MAY-13 18:27:00 to 19-MAY-13 18:27:00 (CST-6)
Location: ALLEMAN
Magnitude: 55.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Power line were blown down along Highway 69 east of Alleman.

Thunderstorm Wind in DALLAS, IOWA
From 19-MAY-13 17:57:00 to 19-MAY-13 17:57:00 (CST-6)
Location: GRANGER
Magnitude: 55.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Power lines and 18 inch trees down.

Thunderstorm Wind in DALLAS, IOWA
From 19-MAY-13 17:48:00 to 19-MAY-13 17:48:00 (CST-6)
Location: SHULER MINE
Magnitude: 70.00 EG
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Amateur Radio

A new machine shed had over half of the roof blown off.

Thunderstorm Wind in DALLAS, IOWA
From 19-MAY-13 17:52:00 to 19-MAY-13 17:52:00 (CST-6)
Location: HADDEN HILL
Magnitude: 55.00 EG
Property damage: 3.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Twelve inch diameter tree limbs blown down.

Thunderstorm Wind in POLK, IOWA
From 19-MAY-13 18:04:00 to 19-MAY-13 18:04:00 (CST-6)
Location: POLK CITY
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Ten inch diameter tree branches blown down in Polk City.

Thunderstorm Wind in POLK, IOWA
From 19-MAY-13 18:08:00 to 19-MAY-13 18:08:00 (CST-6)
Location: ANKENY
Magnitude: 55.00 EG
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Amateur Radio

A gas station canopy was torn off near 36th and Ankeny Blvd.

Thunderstorm Wind in MADISON, IOWA
From 19-MAY-13 17:30:00 to 19-MAY-13 17:30:00 (CST-6)
Location: EARLHAM
Magnitude: 55.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Power lines were down with large tree limbs broken.

Thunderstorm Wind in MARSHALL, IOWA
From 19-MAY-13 19:18:00 to 19-MAY-13 19:18:00 (CST-6)
Location: STATE CENTER
Magnitude: 52.00 EG
Property damage: 3.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Four to six inch tree branches down with power outages.

Thunderstorm Wind in GRUNDY, IOWA
From 19-MAY-13 19:30:00 to 19-MAY-13 19:30:00 (CST-6)
Location: DIKE
Magnitude: 52.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Trees were blown down in town.  Relayed by the Waterloo Courier.

Hail in ADAIR, IOWA
From 19-MAY-13 16:50:00 to 19-MAY-13 16:50:00 (CST-6)
Location: BRIDGEWATER
Magnitude: 1.50 
Property damage: 15.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail dented aluminum siding of a house near Bridgewater.

Thunderstorm Wind in MARSHALL, IOWA
From 19-MAY-13 19:36:00 to 19-MAY-13 19:36:00 (CST-6)
Location: DILLON
Magnitude: 55.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Wind gust estimated by the Emergency Manager.

Thunderstorm Wind in APPANOOSE, IOWA
From 19-MAY-13 20:05:00 to 19-MAY-13 20:05:00 (CST-6)
Location: CINCINNATI
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Wind damage with a tree blocking the road.

Thunderstorm Wind in DAVIS, IOWA
From 19-MAY-13 20:38:00 to 19-MAY-13 20:38:00 (CST-6)
Location: PULASKI
Magnitude: 55.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Strong winds with tree damage.  Tin was blown off of a house.  Heavy rain as well.

Thunderstorm Wind in WAPELLO, IOWA
From 19-MAY-13 20:44:00 to 19-MAY-13 20:44:00 (CST-6)
Location: ELDON
Magnitude: 55.00 EG
Property damage: 40.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A pole barn was blown onto the road.

Thunderstorm Wind in WAPELLO, IOWA
From 19-MAY-13 20:45:00 to 19-MAY-13 20:45:00 (CST-6)
Location: ELDON
Magnitude: 52.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A power pole and tree was blown down along County Road 918.

Thunderstorm Wind in WAPELLO, IOWA
From 19-MAY-13 20:49:00 to 19-MAY-13 20:49:00 (CST-6)
Location: ELDON
Magnitude: 55.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trees were blocking the road on Ashland Road.

Thunderstorm Wind in POLK, IOWA
From 19-MAY-13 18:00:00 to 19-MAY-13 18:00:00 (CST-6)
Location: HERROLD
Magnitude: 52.00 EG
Property damage: 3.00K
Crop damage: 0.00K
Reported by: NWS Employee

A tree was blown down onto a power line.

Thunderstorm Wind in POLK, IOWA
From 19-MAY-13 18:06:00 to 19-MAY-13 18:06:00 (CST-6)
Location: ANKENY
Magnitude: 61.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Public

Shingles and siding torn from some homes by the high wind.

Thunderstorm Wind in BUTLER, IOWA
From 19-MAY-13 19:44:00 to 19-MAY-13 19:44:00 (CST-6)
Location: SHELL ROCK
Magnitude: 55.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Trees were snapped off by high winds.

Thunderstorm Wind in POLK, IOWA
From 19-MAY-13 18:00:00 to 19-MAY-13 18:00:00 (CST-6)
Location: RIDER
Magnitude: 55.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Large trees were down or snapped off around town.

Tornado in DALLAS, IOWA
From 19-MAY-13 17:32:00 to 19-MAY-13 17:35:00 (CST-6)
Location: ADEL
Tornado F-scale: EF0
Property damage: 4.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

Weak tornado with a very broad circulation.  Track was intermittent.

Tornado in POLK, IOWA
From 19-MAY-13 18:07:00 to 19-MAY-13 18:11:00 (CST-6)
Location: ALLEMAN
Tornado F-scale: EF1
Property damage: 75.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

Tornado exhibited an intermittent track as it moved across northern Polk County into Story County.  Peak damage included garage and a living room roof removed from a manufactured home.  Tornado continued into Story County.

Tornado in STORY, IOWA
From 19-MAY-13 18:11:00 to 19-MAY-13 18:12:00 (CST-6)
Location: HUXLEY
Tornado F-scale: EF0
Property damage: 15.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

Tornado exhibited an intermittent track as it moved across northern Polk County into Story County.  Peak damage included garage and a living room roof removed from a manufactured home.  Tornado moved in from Polk County.

Thunderstorm Wind in ADAIR, IOWA
From 19-MAY-13 16:50:00 to 19-MAY-13 16:50:00 (CST-6)
Location: BRIDGEWATER
Magnitude: 55.00 EG
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Numerous 6 inch tree limbs down with hail damage to a house.  Siding and roof damage.  Hail size unknown but dents in aluminum were quarter to half dollar size.

Thunderstorm Wind in MONROE, IOWA
From 19-MAY-13 20:25:00 to 19-MAY-13 20:25:00 (CST-6)
Location: ALBIA
Magnitude: 55.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Numerous tree limbs down, some 3 inches or more with winds estimated at 65 MPH.

Tornado in DALLAS, IOWA
From 19-MAY-13 17:45:00 to 19-MAY-13 17:48:00 (CST-6)
Location: SHULER MINE
Tornado F-scale: EF1
Property damage: 50.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

Circulation was embedded within the straight line winds.  There was significant tree and some structural wind damage to one residence along 250th street.  Track was intermittent.

Thunderstorm Wind in DALLAS, IOWA
From 19-MAY-13 17:32:00 to 19-MAY-13 17:32:00 (CST-6)
Location: REDFIELD
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Several 6 to 8 inch diameter tree limbs were down near the high school.