sweetapricity/bridgedeck-noaa huggingface dataset:
A series of weather systems bringing heavy rain, strong winds, high surf, and a tornado affected the District on March 16-21, 2011. Two deaths occurred during this time.

Tornado in SONOMA, CALIFORNIA
From 18-MAR-11 09:15:00 to 18-MAR-11 09:15:00 (PST-8)
Location: SANTA ROSA
Tornado F-scale: EF1
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

An EF1 tornado completely destroyed a metal building and severely bent a metal gate.

High Surf in SAN FRANCISCO PENINSULA COAST, CALIFORNIA
From 16-MAR-11 14:00:00 to 17-MAR-11 11:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Newspaper

A 35 year old welder from Hawaii died around 6 pm Wednesday in high surf. The wave faces reached heights of 40 to 45 feet on the biggest sets.

Debris Flow in SOUTHERN MONTEREY BAY AND BIG SUR COAST, CALIFORNIA
From 16-MAR-11 16:30:00 to 16-MAR-11 16:31:00 (PST-8)
Property damage: 2.50M
Crop damage: 0.00K
Reported by: County Official

Heavy rain on saturated soils caused a large landslide on State Route One 13.7 miles north of Big Sur State Park at Rocky Creek. The roadway reopened to one-way controlled traffic on April 20, 2011.

High Wind in SAN FRANCISCO BAY SHORELINE, CALIFORNIA
From 19-MAR-11 20:00:00 to 20-MAR-11 05:00:00 (PST-8)
Magnitude: 57.00 EG
Property damage: 100.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Reports indicate that as many as fourteen sailboats and one houseboat floated free in Richardson Bay during the event with some becoming beached off Strawberry Point.

High Wind in NORTH BAY INTERIOR VALLEYS, CALIFORNIA
From 19-MAR-11 20:00:00 to 20-MAR-11 05:00:00 (PST-8)
Magnitude: 66.00 EG
Property damage: 35.00K
Crop damage: 0.00K
Reported by: Newspaper

At 10:20 pm Saturday night a huge oak tree, six feet in diameter, fell onto a SUV killing a 46 year-old man.

Flood in SONOMA, CALIFORNIA
From 19-MAR-11 21:45:00 to 19-MAR-11 21:45:00 (PST-8)
Location: SCHELLVILLE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

State Route 121 was closed from the Junction of State Route 12 to Eighth Street in Schellville due to flooding. There is no information when the roadway reopened.

Debris Flow in SANTA CRUZ MOUNTAINS, CALIFORNIA
From 20-MAR-11 03:19:00 to 20-MAR-11 03:19:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

State Route 9 was closed to northbound traffic at the Junction of State Route 35 due to a mud slide. There was no information when the roadway was reopened.
A volatile combination of strong winds, extremely low humidity, illegal trash burning, and a stash of old tires produced a 10 acre fire in Alton, along Mile 8 1/2 North Road and Moorefield Road.  The fire forced the evacuation of nearly 200 homes, damaged two structures, and produced acrid, pitch black smoke and fumes for several hours starting around noon on April 11th.

Wildfire in HIDALGO, TEXAS
From 11-APR-11 10:45:00 to 11-APR-11 18:00:00 (CST-6)
Property damage: 50.00K
Reported by: Emergency Manager

A 10 acre wildfire, known as the Alton-Moorefield Fire on Moorefield Road between Farm to Market (FM) 107 and FM 1925 in Alton, Hidalgo County, spread rapidly from grass and brush into a five-acre tire dump.  At least 190,000 tires burned, with northerly winds of 20 to 30 mph, rapidly falling humidity below 15 percent, extremely dry grass and brush, and temperatures rising into the upper 90s during the event, pushing thick, acrid black smoke and dangerous fumes into nearby neighborhoods.
Three subdivisions (180 homes) were evacuated; all the homes were threatened by the fire.  Two structures were destroyed, including one home after the fire spread from palm trees into the residence.  Another unknown structure was destroyed. Moorefield Road was temporarily closed between FM 107 and FM 1925. Two firefighters sustained minor injuries. The fire was 85% contained by late afternoon. Dozens of local and regional agencies were called in to fight the fire, including: Alton, Mission, Palmview, Edinburg, McAllen, Alamo, Weslaco, Pharr, Los Fresnos, and Linn-San  Manuel Volunteer Fire Department. The Hidalgo County Sheriff's Office, Fire
Marshal's Office, Emergency Management Coordinator, Public Works and the Regional Liaison Officer for Region 3A (Lower Rio Grande Valley) responded to the event.
A line of convective showers moved through during the early morning hours producing wind gusts and damage.  In addition, some synoptic strong and high winds occurred during this time period.

Thunderstorm Wind in MADISON, OHIO
From 28-APR-11 01:45:00 to 28-APR-11 01:46:00 (EST-5)
Location: LONDON
Magnitude: 52.00 EG
Reported by: Trained Spotter

The spotter estimated the wind gust.

Thunderstorm Wind in UNION, OHIO
From 28-APR-11 01:52:00 to 28-APR-11 01:56:00 (EST-5)
Location: LUNDA
Magnitude: 52.00 EG
Property damage: 3.00K
Crop damage: 0.00K
Reported by: Public

A metal shed was destroyed due to the winds.

Thunderstorm Wind in FRANKLIN, OHIO
From 28-APR-11 02:21:00 to 28-APR-11 02:22:00 (EST-5)
Location: HILLIARD
Magnitude: 52.00 MG
Reported by: Trained Spotter

Strong Wind in AUGLAIZE, OHIO
From 28-APR-11 02:30:00 to 28-APR-11 02:32:00 (EST-5)
Magnitude: 45.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Trees were reported down due to the wind.

Thunderstorm Wind in FRANKLIN, OHIO
From 28-APR-11 02:31:00 to 28-APR-11 02:32:00 (EST-5)
Location: GAHANNA
Magnitude: 56.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Several large tree branches were broken due to the winds.

High Wind in AUGLAIZE, OHIO
From 28-APR-11 01:56:00 to 28-APR-11 01:57:00 (EST-5)
Magnitude: 50.00 MG
Reported by: AWOS

The wind gust occurred at the KAXV Wapakoneta Airport AWOS.

High Wind in SHELBY, OHIO
From 28-APR-11 01:44:00 to 28-APR-11 01:45:00 (EST-5)
Magnitude: 54.00 MG
Reported by: Trained Spotter

The wind gust was measured by a trained spotter three miles northwest of Sidney.

High Wind in MONTGOMERY, OHIO
From 28-APR-11 01:33:00 to 28-APR-11 01:34:00 (EST-5)
Magnitude: 53.00 MG
Reported by: ASOS

The KDAY ASOS at the Dayton International Airport in Vandalia reported the wind gust.
An upper level disturbance moved through the Mid-South during the evening hours March 29th, 2011 as a warm front lifted north into North Mississippi. Showers and thunderstorms developed over the area as a result. Some storms became severe producing large hail.

Hail in LEE, MISSISSIPPI
From 29-MAR-11 18:45:00 to 29-MAR-11 18:50:00 (CST-6)
Location: NETTLETON
Magnitude: 1.00 
Crop damage: 0.00K
Reported by: Law Enforcement

Quarter size hail covered the ground in Nettleton.

Hail in ITAWAMBA, MISSISSIPPI
From 29-MAR-11 18:53:00 to 29-MAR-11 18:58:00 (CST-6)
Location: EVERGREEN
Magnitude: 1.00 
Crop damage: 0.00K
Reported by: Trained Spotter

Quarter size hail covered the ground lightly in Evergreen.

Hail in YALOBUSHA, MISSISSIPPI
From 29-MAR-11 21:24:00 to 29-MAR-11 21:29:00 (CST-6)
Location: WATER VLY
Magnitude: 1.00 
Crop damage: 0.00K
Reported by: Post Office

Nickel to quarter size hail fell south of Water Valley.

Hail in LAFAYETTE, MISSISSIPPI
From 29-MAR-11 21:45:00 to 29-MAR-11 21:50:00 (CST-6)
Location: TULA
Magnitude: 1.50 
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Hail in ITAWAMBA, MISSISSIPPI
From 29-MAR-11 21:36:00 to 29-MAR-11 21:41:00 (CST-6)
Location: NEW SALEM
Magnitude: 1.00 
Crop damage: 0.00K
Reported by: Emergency Manager

Nickel to quarter size hail near New Salem.

Hail in YALOBUSHA, MISSISSIPPI
From 29-MAR-11 21:01:00 to 29-MAR-11 21:06:00 (CST-6)
Location: SCOBEY
Magnitude: 1.00 
Crop damage: 0.00K
Reported by: Trained Spotter
A large wildfire ignited near Farm to Market Road 1065 in extreme northeastern Floyd County during the late evening hours of the 13th.  The fire sparked, and spread rapidly, following the passage of a cold front which brought sustained northerly winds of 20 mph to 25 mph.  The Texas Forest Service reported that 750 acres burned in the fire.  No damages were reported.

Wildfire in FLOYD, TEXAS
From 13-MAR-11 17:30:00 to 13-MAR-11 22:30:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Park/Forest Service
Most counties in the region received less than an inch of rain during the month and drought conditions continued to worsen. Many locations started the month in abnormally dry (D0) or moderate (D1) drought and ended the month in severe (D2) or extreme (D3) drought. In north Texas, the drought was the worst in the southern and eastern counties. At the end of the month, 40 of the 46 counties in north Texas were experiencing at least severe drought (D2) conditions and 26 counties had burn bans in effect.

Drought in LAMPASAS, TEXAS
From 07-MAR-11 00:00:00 to 31-MAR-11 23:59:00 (CST-6)
Property damage: 0.00K
Crop damage: 7.00K
Reported by: Other Federal Agency

According to the US Drought Monitor, the county started the month in moderate drought (D1). With little to no rainfall, drought conditions worsened and the county ended the month in severe drought (D2).

Drought in EASTLAND, TEXAS
From 07-MAR-11 00:00:00 to 31-MAR-11 23:59:00 (CST-6)
Property damage: 0.00K
Crop damage: 7.00K
Reported by: Other Federal Agency

According to the US Drought Monitor, the county started the month in moderate drought (D1). With little to no rainfall, drought conditions worsened and the county ended the month in severe drought (D2).

Drought in FANNIN, TEXAS
From 07-MAR-11 00:00:00 to 31-MAR-11 23:59:00 (CST-6)
Property damage: 0.00K
Crop damage: 7.00K
Reported by: Other Federal Agency

According to the US Drought Monitor, the county started the month in moderate drought (D1). With little to no rainfall, drought conditions worsened and the county ended the month in extreme drought (D3).

Drought in HUNT, TEXAS
From 07-MAR-11 00:00:00 to 31-MAR-11 23:59:00 (CST-6)
Property damage: 0.00K
Crop damage: 7.00K
Reported by: Other Federal Agency

According to the US Drought Monitor, the county started the month in moderate drought (D1). With little to no rainfall, drought conditions worsened and the county ended the month in extreme drought (D3).

Drought in ERATH, TEXAS
From 07-MAR-11 00:00:00 to 31-MAR-11 23:59:00 (CST-6)
Property damage: 0.00K
Crop damage: 7.00K
Reported by: Other Federal Agency

According to the US Drought Monitor, the county started the month in moderate drought (D1). With little to no rainfall, drought conditions worsened and the county ended the month in severe drought (D2).

Drought in LIMESTONE, TEXAS
From 07-MAR-11 00:00:00 to 31-MAR-11 23:59:00 (CST-6)
Property damage: 0.00K
Crop damage: 7.00K
Reported by: Other Federal Agency

According to the US Drought Monitor, the county started the month in moderate drought (D1). With little to no rainfall, drought conditions worsened and the county ended the month in severe drought (D2).
By afternoon on April 10th, a surface low had moved close to the western tip of Lake Superior, ushering a warm and humid air mass into northwest Wisconsin. Thunderstorms developed quickly in the late afternoon but exited to the north and east after only several hours. Some of the storms produced very large hail up to 3 inches in diameter and some damaging wind gusts.

Hail in ASHLAND, WISCONSIN
From 10-APR-11 17:04:00 to 10-APR-11 17:04:00 (CST-6)
Location: ODANAH
Magnitude: 3.00 
Property damage: 1.50K
Crop damage: 0.00K
Reported by: Public

Oblong and spiky hail stones up to 3 inches in diameter fell near the town of Odanah.

Thunderstorm Wind in SAWYER, WISCONSIN
From 10-APR-11 16:35:00 to 10-APR-11 16:35:00 (CST-6)
Location: LORETTA
Magnitude: 55.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A few large poplar trees were blown down. Half-inch diameter hail was also received.

Hail in PRICE, WISCONSIN
From 10-APR-11 16:53:00 to 10-APR-11 16:53:00 (CST-6)
Location: PARK FALLS
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in ASHLAND, WISCONSIN
From 10-APR-11 16:56:00 to 10-APR-11 16:56:00 (CST-6)
Location: MARENGO
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in ASHLAND, WISCONSIN
From 10-APR-11 17:08:00 to 10-APR-11 17:08:00 (CST-6)
Location: ODANAH
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in ASHLAND, WISCONSIN
From 10-APR-11 17:07:00 to 10-APR-11 17:07:00 (CST-6)
Location: ODANAH
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in PRICE, WISCONSIN
From 10-APR-11 17:40:00 to 10-APR-11 17:40:00 (CST-6)
Location: KAISER
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter
Deepening low pressure over Colorado on the morning of March 22nd went straight east, reaching the Chicago area on the morning of March 23rd.  Meanwhile, strong high pressure over southern Hudson Bay was feeding very dry, dense air from northern Ontario southward across Lake Superior into northwest Wisconsin.  Substantial snow, accumulating 7 to 12 inches, remained south of the Lake Superior coast, south of a line from Dairyland, Cable, and Glidden.  Strong winds, gusting to 50 mph, occurred across the the area during the afternoon and evening of March 22nd and into the early morning of the 23rd.

Heavy Snow in SAWYER, WISCONSIN
From 22-MAR-11 15:00:00 to 23-MAR-11 12:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy Snow in PRICE, WISCONSIN
From 22-MAR-11 15:00:00 to 23-MAR-11 14:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy Snow in DOUGLAS, WISCONSIN
From 22-MAR-11 15:00:00 to 23-MAR-11 14:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy Snow in WASHBURN, WISCONSIN
From 22-MAR-11 15:00:00 to 23-MAR-11 12:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy Snow in BAYFIELD, WISCONSIN
From 22-MAR-11 16:00:00 to 23-MAR-11 13:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy Snow in ASHLAND, WISCONSIN
From 22-MAR-11 16:00:00 to 23-MAR-11 13:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy Snow in BURNETT, WISCONSIN
From 22-MAR-11 15:00:00 to 23-MAR-11 12:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter
A wet spring resulted in saturated soils across northern Idaho.  Recent heavy rainfall on the 25th and 26th of April was too much for a hillside along East Hayden Lake Road.  Rainfall totals for the event ranged from three-quarters of an inch to an inch and a half across this area.

Debris Flow in COEUR D'ALENE AREA, IDAHO
From 27-APR-11 12:00:00 to 27-APR-11 12:10:00 (PST-8)
Property damage: 75.00K
Crop damage: 0.00K
Reported by: Department of Highways

A landslide along East Hayden Lake Road at mile post 5.5 resulted in half of the road breaking off and sliding down the embankment.  Time of the slide is approximated.  Lakes Highway District reported that the slide occurred sometime between their morning and afternoon inspections.  Exact cost of road repairs is unknown, but it is thought that the total cost will be between 50 and 100 thousand dollars.
Widespread heavy rainfall from 6 to 9 inches with locally higher amounts occurred during the last week of April. At Evansville, a total of 7.31 inches fell from April 22 to April 30. This excessive rainfall caused most creeks and small streams to flood for an extended period of time. Numerous roads were flooded and closed, including some major state roads. Due to vehicles driving into flooded areas, some water rescues were conducted. Some evacuations were conducted, and homes were sandbagged. In southeast Gibson County, flooding along Pigeon Creek and Smith Fork forced the evacuation of at least one residence.

Flood in GIBSON, INDIANA
From 24-APR-11 13:00:00 to 30-APR-11 23:59:00 (CST-6)
Location: GIRO
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Flood in PIKE, INDIANA
From 24-APR-11 21:00:00 to 30-APR-11 23:59:00 (EST-5)
Location: IVY
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Flood in POSEY, INDIANA
From 24-APR-11 21:00:00 to 30-APR-11 23:59:00 (CST-6)
Location: UPTON
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Flood in SPENCER, INDIANA
From 24-APR-11 21:00:00 to 30-APR-11 23:59:00 (CST-6)
Location: AFRICA
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Flood in VANDERBURGH, INDIANA
From 24-APR-11 21:00:00 to 30-APR-11 23:59:00 (CST-6)
Location: ARMSTRONG
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Flood in WARRICK, INDIANA
From 24-APR-11 21:00:00 to 30-APR-11 23:59:00 (CST-6)
Location: ASH IRON SPGS
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter
A surface low pressure center developed northeastward from south central Oklahoma to southwest Missouri. A gradual increase in the warm sector southerly low level jet occurred as the surface low deepened. Increasing vertical wind shear in the moist and unstable warm sector supported the development of short lines of thunderstorms with embedded lewps and supercell structures.

Thunderstorm Wind in JACKSON, ILLINOIS
From 25-APR-11 18:38:00 to 25-APR-11 18:38:00 (CST-6)
Location: ELKVILLE
Magnitude: 51.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Flash Flood in PERRY, ILLINOIS
From 25-APR-11 22:44:00 to 25-APR-11 23:40:00 (CST-6)
Location: PINCKNEYVILLE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A bridge was underwater west of Pinckneyville, and traffic was re-routed.

Flash Flood in FRANKLIN, ILLINOIS
From 25-APR-11 22:50:00 to 25-APR-11 23:45:00 (CST-6)
Location: URBAIN
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Flash flooding was reported in West Frankfort.

Flash Flood in UNION, ILLINOIS
From 25-APR-11 21:55:00 to 25-APR-11 23:30:00 (CST-6)
Location: WOLF LAKE
Flood cause: Heavy Rain
Property damage: 250.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Three small bridges were washed out. The bridges were on secondary roads off Highway 127, Highway 146, and Highway 51. Numerous roads were underwater or impassable across the county, including Illinois Route 146 near Ware. Several families were evacuated from their houses. Flash flooding of Clear Creek closed a local road. The Jonesboro community center was damaged by water.
An intense, slow-moving, winter-like storm moved across the Central High Plains on April 14-15.  The storm produced a round of high winds with numerous gusts over 60 mph, in addition to wet, heavy snow.  Blizzard conditions occurred in some areas with power outages occurring and state highways closed.  Many residents were without power for periods of time ranging from 12 to 48 hours.

Blizzard in HITCHCOCK, NEBRASKA
From 14-APR-11 11:00:00 to 15-APR-11 05:00:00 (CST-6)
Property damage: 40.00K
Crop damage: 0.00K
Reported by: COOP Observer

Four to six inches of snow was reported across the county by cooperative and CoCoRaHS observers.  Strong winds resulted in blizzard conditions with road closures and power outages common. Nine utility poles were broken or damaged in the county.

Blizzard in DUNDY, NEBRASKA
From 14-APR-11 10:00:00 to 15-APR-11 04:00:00 (MST-7)
Property damage: 160.00K
Crop damage: 0.00K
Reported by: COOP Observer

Four to seven inches of snow was reported across the county by cooperative and CoCoRaHS observers.  Strong winds resulted in blizzard conditions with road closures and power outages common.  Thirty-five utility poles were damaged or broken during the event.
During the late evening of April 10th into the early morning hours of April 11th, strong to severe thunderstorms with damaging winds moved across northwest Indiana.

Thunderstorm Wind in PORTER, INDIANA
From 10-APR-11 23:03:00 to 10-APR-11 23:03:00 (CST-6)
Location: MC COOL
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Tree damage was reported on McCool Road just north of Route 6 in Portage. Winds were estimated to be 60 mph.

Thunderstorm Wind in NEWTON, INDIANA
From 10-APR-11 23:59:00 to 10-APR-11 23:59:00 (CST-6)
Location: KENTLAND
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Wind gusts were estimated at 60 mph in Kentland.

Thunderstorm Wind in JASPER, INDIANA
From 11-APR-11 00:15:00 to 11-APR-11 00:15:00 (CST-6)
Location: REMINGTON
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Estimated winds of 60 mph were reported in Remington toppling a large tree across a vehicle.  Another three large trees fell across roadways. Many in town were without power.

Thunderstorm Wind in JASPER, INDIANA
From 10-APR-11 23:17:00 to 10-APR-11 23:17:00 (CST-6)
Location: DEMOTTE
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Tree limbs were blown down.

Thunderstorm Wind in JASPER, INDIANA
From 10-APR-11 23:20:00 to 10-APR-11 23:20:00 (CST-6)
Location: WHEATFIELD
Magnitude: 52.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A power pole and its wires were reported down in the town of Wheatfield.
A strong line of thunderstorms formed along a cold front to the west of Iowa.  As it approached Iowa, the line weakened as there was a very strong cap in place over Iowa and low level winds became divergent.  The atmosphere was quite unstable as the line approached with about 2000 J/kg of CAPE available and a lifted index of -5 C.  The freezing level was quite high, around 15,000 feet.  Downdraft CAPE was very high and was between 1400 and 1600 J/kg.  In spite of a 65 to 70 kt low level jet, the storms weakened as they moved into Iowa.  One of the storms bowed out in the Denison area of Crawford County and produced a 63 MPH wind gust at the Denison Airport.  Tree and power line damage occurred in Dow City and the town of Denison.  A shed was blown over near Dow City.

Thunderstorm Wind in CRAWFORD, IOWA
From 30-MAY-11 23:22:00 to 30-MAY-11 23:22:00 (CST-6)
Location: DOW CITY
Magnitude: 57.00 EG
Property damage: 15.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Trees were blown down across the highway and a shed was blown down.

Thunderstorm Wind in CRAWFORD, IOWA
From 30-MAY-11 23:29:00 to 30-MAY-11 23:29:00 (CST-6)
Location: DENISON MUNI ARPT
Magnitude: 55.00 MG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: AWOS

Thunderstorm Wind in CRAWFORD, IOWA
From 30-MAY-11 23:31:00 to 30-MAY-11 23:31:00 (CST-6)
Location: DENISON
Magnitude: 52.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Trees were blown down along with power lines.