Widespread wind and tornado damage occurred in central Iowa as a result of a low pressure system that raced across the state. Originally, the low pressure center developed in eastern/southeastern Colorado late Tuesday/early Wednesday and proceeded to quickly move east-northeast across Kansas before taking a more northeasterly turn as it approached southwest Iowa. Throughout the event, MUCAPE values were generally in the neighborhood of 500 J/kg.  Shear values were supportive with 0-1km values and 0-6km values around 35kts and 85-90kts respectively.  SRH values were also very supportive with 0-1km and 0-3km values around 350 m2/s2 and 500 m2/s2 respectively.  With the speed of the system and the ample support, resulting storms were fast moving, in excess of 40mph, and of the low topped supercell variety before transitioning into a linear system as the event progressed.

Tornado in TAYLOR, IOWA
From 11-NOV-15 14:00:00 to 11-NOV-15 14:10:00 (CST-6)
Location: CONWAY
Tornado F-scale: EF0
Property damage: 80.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

This tornado crossed 3 counties in southern Iowa.  This is segment number one in Taylor county.  This long track tornado damaged a number of farmsteads along its 22 mile long path. The tornado was at its strongest in NW Ringgold County where EF-1 damage was found. The beginning and end sections of the track were narrow and intermittent. The narrow tornado also clipped the town of Clearfield to the NW early in its life.  The tornado crossed into Ringgold county.

Tornado in RINGGOLD, IOWA
From 11-NOV-15 14:10:00 to 11-NOV-15 14:17:00 (CST-6)
Location: CLEARFIELD
Tornado F-scale: EF1
Property damage: 200.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

This tornado crossed through 3 counties in southern Iowa.  This is the second segment in Ringgold county.  This long track tornado damaged a number of farmsteads along its 22 mile long path. The tornado was at its strongest in NW Ringgold County where EF-1 damage was found. The beginning and end sections of the track were narrow and intermittent. The narrow tornado also clipped the town of Clearfield to the NW early in its life.  The tornado crossed into Union county.

Thunderstorm Wind in BLACK HAWK, IOWA
From 11-NOV-15 17:04:00 to 11-NOV-15 17:04:00 (CST-6)
Location: CEDAR FALLS ISLEY AR
Magnitude: 65.00 EG
Property damage: 75.00K
Crop damage: 0.00K
Reported by: Broadcast Media

KWWL reported a roof blown off of a hay barn, minor damage to the siding of a house, and minor roof damage to another building.  Delayed report.  Time estimated by radar.

Thunderstorm Wind in BLACK HAWK, IOWA
From 11-NOV-15 17:11:00 to 11-NOV-15 17:11:00 (CST-6)
Location: GILBERTVILLE
Magnitude: 61.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Law Enforcement reported a large tree down in the 5200 block of Gilbertville Rd.  Time estimated by radar.

Thunderstorm Wind in MADISON, IOWA
From 11-NOV-15 15:15:00 to 11-NOV-15 15:15:00 (CST-6)
Location: BEVINGTON
Magnitude: 56.00 EG
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Public

A garage was destroyed by strong thunderstorm winds.

Tornado in UNION, IOWA
From 11-NOV-15 14:17:00 to 11-NOV-15 14:25:00 (CST-6)
Location: KENT
Tornado F-scale: EF1
Property damage: 125.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

This tornado crossed three counties in southern Iowa.  This is segment three in Union county. This long track tornado damaged a number of farmsteads along its 22 mile long path. The tornado was at its strongest in NW Ringgold County where EF-1 damage was found. The beginning and end sections of the track were narrow and intermittent. The narrow tornado also clipped the town of Clearfield to the NW early in its life.

Tornado in RINGGOLD, IOWA
From 11-NOV-15 14:09:00 to 11-NOV-15 14:20:00 (CST-6)
Location: DELPHOS
Tornado F-scale: EF1
Property damage: 125.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

This fast-moving tornado cut a 12 mile path through central Ringgold County, producing high end EF-1 damage at its peak. The beginning of the track was characterized by weak and intermittent damage, with the tornado strengthening and widening once it got north of IA Highway 2. Six farmsteads were hit along its track.

Tornado in MONROE, IOWA
From 11-NOV-15 15:28:00 to 11-NOV-15 15:38:00 (CST-6)
Location: MELROSE
Tornado F-scale: EF2
Property damage: 150.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

Tornado moved from Appanoose into Monroe county.  This was the strongest tornado of the day and produced extensive damage to several farmsteads.

Tornado in MADISON, IOWA
From 11-NOV-15 14:51:00 to 11-NOV-15 15:02:00 (CST-6)
Location: PITZER
Tornado F-scale: EF1
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Storm Chaser

This fast moving tornado damaged at least one farmstead west of Winterset and was captured on video by a storm chaser.

Funnel Cloud in ADAMS, IOWA
From 11-NOV-15 14:05:00 to 11-NOV-15 14:05:00 (CST-6)
Location: MT ETNA
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Public reported brief funnel cloud that came down and back up.

Thunderstorm Wind in CALHOUN, IOWA
From 11-NOV-15 14:57:00 to 11-NOV-15 14:57:00 (CST-6)
Location: LAKE CITY
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotter reported high winds around 60 mph.

Thunderstorm Wind in WARREN, IOWA
From 11-NOV-15 15:20:00 to 11-NOV-15 15:20:00 (CST-6)
Location: INDIANOLA
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotter estimated winds of 60 to 70 mph.

Thunderstorm Wind in CALHOUN, IOWA
From 11-NOV-15 15:23:00 to 11-NOV-15 15:23:00 (CST-6)
Location: ROCKWELL CITY
Magnitude: 51.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

RWIS station along US 20 near Rockwell City recorded 51 knot wind gusts.

Thunderstorm Wind in WARREN, IOWA
From 11-NOV-15 15:26:00 to 11-NOV-15 15:26:00 (CST-6)
Location: CUMMING
Magnitude: 48.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Public

Public reported small outbuilding overturned.

Thunderstorm Wind in APPANOOSE, IOWA
From 11-NOV-15 15:35:00 to 11-NOV-15 15:35:00 (CST-6)
Location: CENTERVILLE
Magnitude: 56.00 EG
Property damage: 15.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotter reported numerous branches upwards of 6 inches in diameter down as well as a tree approximately 3 feet in diameter down.  Time radar estimated.

Thunderstorm Wind in JASPER, IOWA
From 11-NOV-15 15:38:00 to 11-NOV-15 15:38:00 (CST-6)
Location: PRAIRIE CITY
Magnitude: 52.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Mesonet site measured 52 knot gusts near Neal Smith Wildlife Refuge.

Heavy Rain in POLK, IOWA
From 11-NOV-15 15:42:00 to 11-NOV-15 15:42:00 (CST-6)
Location: ALTOONA
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Public reported 0.75 inches of rain in 15 minutes.

Thunderstorm Wind in MONROE, IOWA
From 11-NOV-15 15:44:00 to 11-NOV-15 15:44:00 (CST-6)
Location: HOCKING
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotter reported wind gusts of approximately 60 mph.

Thunderstorm Wind in STORY, IOWA
From 11-NOV-15 15:49:00 to 11-NOV-15 15:49:00 (CST-6)
Location: AMES
Magnitude: 59.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Public reported wind gusts of approximately 65 to 70 mph at Ames High School.

Thunderstorm Wind in WAPELLO, IOWA
From 11-NOV-15 16:14:00 to 11-NOV-15 16:14:00 (CST-6)
Location: (OTM)OTTUMWA INDSTRL
Magnitude: 51.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

ASOS site measured wind gusts of 58 mph at Ottumwa Airport.

Thunderstorm Wind in WAPELLO, IOWA
From 11-NOV-15 16:15:00 to 11-NOV-15 16:15:00 (CST-6)
Location: OTTUMWA
Magnitude: 56.00 EG
Property damage: 15.00K
Crop damage: 0.00K
Reported by: Social Media

Public reported multiple areas with power lines down. Photo posted on facebook.

Thunderstorm Wind in WAPELLO, IOWA
From 11-NOV-15 16:18:00 to 11-NOV-15 16:18:00 (CST-6)
Location: (OTM)OTTUMWA INDSTRL
Magnitude: 51.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

ASOS station at Ottumwa Industrial Airport reported 58 mph wind gusts.

Heavy Rain in KOSSUTH, IOWA
From 11-NOV-15 18:45:00 to 12-NOV-15 05:55:00 (CST-6)
Location: ALGONA MUNI ARPT
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

AWOS station in Algona reported heavy rainfall of 1.61 inches total.

Tornado in CARROLL, IOWA
From 11-NOV-15 14:31:00 to 11-NOV-15 14:33:00 (CST-6)
Location: MANNING
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 1.00K
Reported by: Public

Public report of tornado.  Pictures taken by nearby residents indicated narrow path through cornfield.

Tornado in DALLAS, IOWA
From 11-NOV-15 14:59:00 to 11-NOV-15 15:13:00 (CST-6)
Location: KENNEDY
Tornado F-scale: EF1
Property damage: 10.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

Damage to outbuildings and up to moderate tree damage.  Damage initially reported by Emergency Manager.

Tornado in MADISON, IOWA
From 11-NOV-15 14:56:00 to 11-NOV-15 15:00:00 (CST-6)
Location: WINTERSET
Tornado F-scale: EF0
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Small metal building and scoreboard destroyed at high school athletic field.  Path was mostly in rural areas south of Winterset.

Tornado in MARION, IOWA
From 11-NOV-15 15:42:00 to 11-NOV-15 15:47:00 (CST-6)
Location: KNOXVILLE ARPT
Tornado F-scale: EF1
Property damage: 350.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A high-end EF-1 tornado touched down southwest of Knoxville and traveled through the southeast side of town.  Damage occurred along its path through town.  One injury was reported.

Tornado in APPANOOSE, IOWA
From 11-NOV-15 15:22:00 to 11-NOV-15 15:28:00 (CST-6)
Location: GRIFFINSVILLE
Tornado F-scale: EF2
Property damage: 200.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

Storm survey team indicated start of the tornado occurred southwest of Rathbun reservoir in northwest Appanoose county.  Tornado was strongest of the day producing damage to several farmsteads along its path.  This tornado crossed into Monroe county.

Tornado in MADISON, IOWA
From 11-NOV-15 14:49:00 to 11-NOV-15 14:58:00 (CST-6)
Location: BARNEY
Tornado F-scale: EF0
Property damage: 3.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

Storm survey concluded a small tornado occurred in many rural areas of Madison county.  One small outbuilding was damaged with minor crop and tree damage.

Tornado in RINGGOLD, IOWA
From 11-NOV-15 14:35:00 to 11-NOV-15 14:39:00 (CST-6)
Location: BEACONSFIELD
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

Survey determined tornado started in rural areas of eastern Ringgold county and produced tree damage before leaving the county.  Tornado moved into Decatur county.

Tornado in POLK, IOWA
From 11-NOV-15 15:27:00 to 11-NOV-15 15:31:00 (CST-6)
Location: (DSM)DES MOINES INTL
Tornado F-scale: EF0
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Tornado observed by official observer at the Des Moines airport.  Tornado tracked across the airfield before entering a housing area north of the airport.  Semi trailers were turned over at the airport with numerous large tree limbs downed in the neighborhoods north of the airport.

Thunderstorm Wind in ADAMS, IOWA
From 11-NOV-15 14:15:00 to 11-NOV-15 14:15:00 (CST-6)
Location: STRINGTOWN
Magnitude: 50.00 EG
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotter reported a semi blown over by high winds on Highway 34.

Thunderstorm Wind in ADAIR, IOWA
From 11-NOV-15 14:20:00 to 11-NOV-15 14:20:00 (CST-6)
Location: BRIDGEWATER
Magnitude: 56.00 EG
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Storm Chaser

Storm chaser reported a barn lost its roof 1 mile north of Bridgewater along Iowa Highway 92.

Tornado in DECATUR, IOWA
From 11-NOV-15 14:39:00 to 11-NOV-15 14:48:00 (CST-6)
Location: GRAND RIVER
Tornado F-scale: EF1
Property damage: 5.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

Tornado moved into Decatur county from Ringgold county.  NWS storm survey then tracked the tornado across northwest Decatur county.  A cattle lean-to was destroyed along with two other outbuildings damaged.  There was extensive tree damage in a small area near the town of Grand River.

Tornado in MAHASKA, IOWA
From 11-NOV-15 16:16:00 to 11-NOV-15 16:19:00 (CST-6)
Location: ROSE HILL
Tornado F-scale: EF0
Property damage: 1.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

Storm Survey team found damage on the county line between Mahaska and Keokuk county.  Tornado started in rural areas of eastern Mahaska county with only minor damage before exiting into Keokuk county.

Tornado in MAHASKA, IOWA
From 11-NOV-15 16:20:00 to 11-NOV-15 16:28:00 (CST-6)
Location: INDIANAPOLIS
Tornado F-scale: EF2
Property damage: 75.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

Tornado started in rural Mahaska county south of Barnes City.  Tornado damaged or destroyed several structures along its path.  Also damaged several trees with branches and trunks snapped. In Barnes City, multiple outbuildings were slid off their foundation. The back end of one car was shifted by 2 ft.  Tornado then moved into Poweshiek county before dissipating.

Thunderstorm Wind in CARROLL, IOWA
From 11-NOV-15 14:30:00 to 11-NOV-15 14:30:00 (CST-6)
Location: MANNING
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotter reported thunderstorm winds of approximately 60 mph.

Thunderstorm Wind in RINGGOLD, IOWA
From 11-NOV-15 14:33:00 to 11-NOV-15 14:33:00 (CST-6)
Location: KELLERTON
Magnitude: 65.00 EG
Property damage: 75.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Emergency Manager reported a hole in a big barn on its west side and shingles missing off of a house, but no major structural damage.  Primarily only loose items thrown around and some uprooted trees/branches.  Time estimated from radar.

Hail in GUTHRIE, IOWA
From 11-NOV-15 14:44:00 to 11-NOV-15 14:44:00 (CST-6)
Location: MENLO
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Emergency Manager reported nickel sized hail.

Tornado in POWESHIEK, IOWA
From 11-NOV-15 16:28:00 to 11-NOV-15 16:29:00 (CST-6)
Location: MONTEZUMA SIG ARPT
Tornado F-scale: EF0
Property damage: 1.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

Storm moved into Poweshiek county from Mahaska county.  ��After exiting Barnes City, the tornado continued into Poweshiek County, where it dissipated with little additional damage.

Thunderstorm Wind in DALLAS, IOWA
From 11-NOV-15 15:15:00 to 11-NOV-15 15:15:00 (CST-6)
Location: ADEL
Magnitude: 56.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A report of trees down near Adel.

Tornado in GUTHRIE, IOWA
From 11-NOV-15 14:57:00 to 11-NOV-15 15:02:00 (CST-6)
Location: FANSLERS
Tornado F-scale: EF0
Property damage: 5.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

Tornado developed over Lake Panorama and produced a pronounced but narrow path of damage to the northeast.  Numerous trees were damaged with some minor house damage at residences on the north shore of Lake Panorama.  Tornado then entered rural areas north of the lake producing minor tree and property damage before lifting.  Tornado initially reported by Emergency Manager.

Thunderstorm Wind in WAYNE, IOWA
From 11-NOV-15 15:05:00 to 11-NOV-15 15:05:00 (CST-6)
Location: CORYDON
Magnitude: 56.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Social Media

Public reported a large pine tree snapped.  Time estimated by radar.

Thunderstorm Wind in WARREN, IOWA
From 11-NOV-15 15:19:00 to 11-NOV-15 15:19:00 (CST-6)
Location: CUMMING
Magnitude: 52.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Social Media

Public reported a small shed overturned.

Thunderstorm Wind in WAYNE, IOWA
From 11-NOV-15 15:19:00 to 11-NOV-15 15:19:00 (CST-6)
Location: CONFIDENCE
Magnitude: 56.00 EG
Property damage: 30.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Emergency Manager reported damage to Morton buildings.

Thunderstorm Wind in POLK, IOWA
From 11-NOV-15 15:31:00 to 11-NOV-15 15:31:00 (CST-6)
Location: LOVINGTON
Magnitude: 52.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Law Enforcement reported trees down east of Merle Hay Road.

Thunderstorm Wind in POLK, IOWA
From 11-NOV-15 15:32:00 to 11-NOV-15 15:32:00 (CST-6)
Location: SAYDELL
Magnitude: 56.00 EG
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Law Enforcement reported multiple large trees down at intersection of NW 55th St and NW Beaver Dr.

Thunderstorm Wind in POLK, IOWA
From 11-NOV-15 15:37:00 to 11-NOV-15 15:37:00 (CST-6)
Location: NORWOODVILLE
Magnitude: 52.00 EG
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotter reported a sheet metal roof and trees damaged near Euclid and Delaware.  Time estimated from radar.

Thunderstorm Wind in MARION, IOWA
From 11-NOV-15 15:37:00 to 11-NOV-15 15:37:00 (CST-6)
Location: COLUMBIA
Magnitude: 50.00 EG
Property damage: 20.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Law Enforcement reported a semi trailer truck flipped with injuries reported.

Thunderstorm Wind in POLK, IOWA
From 11-NOV-15 15:41:00 to 11-NOV-15 15:41:00 (CST-6)
Location: ALLEMAN
Magnitude: 52.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Law Enforcement reported trees down.

Thunderstorm Wind in BOONE, IOWA
From 11-NOV-15 15:42:00 to 11-NOV-15 15:42:00 (CST-6)
Location: NAPIER
Magnitude: 61.00 EG
Property damage: 75.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Boone County Emergency Manager reported a 3 mile stretch of damage from 1.5 W of Napier to 3 miles NE of Napier.  Damaged included roof off old grain bin, damaged barn, and a one foot diameter pine tree down.  All damage was in one direction.  Time estimated from radar.

Thunderstorm Wind in JASPER, IOWA
From 11-NOV-15 15:43:00 to 11-NOV-15 15:43:00 (CST-6)
Location: PRAIRIE CITY
Magnitude: 70.00 EG
Property damage: 60.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Law Enforcement reported two roofs off of buildings near Casey's General Store.

Thunderstorm Wind in MONROE, IOWA
From 11-NOV-15 15:44:00 to 11-NOV-15 15:47:00 (CST-6)
Location: ALBIA
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotter reported approximately 60 mph winds lasting for 3 minutes.

Thunderstorm Wind in MONROE, IOWA
From 11-NOV-15 15:50:00 to 11-NOV-15 15:50:00 (CST-6)
Location: AVERY
Magnitude: 61.00 EG
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Emergency Manager reported power poles and lines downed.

Thunderstorm Wind in JASPER, IOWA
From 11-NOV-15 15:50:00 to 11-NOV-15 15:50:00 (CST-6)
Location: NEWTON
Magnitude: 56.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotter reported estimated wind gusts of 65 mph.  Damage included a flag ripped off the pole and the door of a business ripped open.

Tornado in WAYNE, IOWA
From 11-NOV-15 14:57:00 to 11-NOV-15 14:58:00 (CST-6)
Location: SEWAL
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

The brief, narrow tornado was recorded by multiple storm chasers.

Thunderstorm Wind in APPANOOSE, IOWA
From 11-NOV-15 15:55:00 to 11-NOV-15 15:55:00 (CST-6)
Location: SHARON
Magnitude: 52.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Social Media

Public reported power poles leaning over along Highway 2 east of the Moulton turn off.  Time estimated by radar.

Thunderstorm Wind in DAVIS, IOWA
From 11-NOV-15 16:13:00 to 11-NOV-15 16:13:00 (CST-6)
Location: FLORIS
Magnitude: 61.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotter reported broken windows and shingles blown off of roof.  Time estimated by radar.

Tornado in MARSHALL, IOWA
From 11-NOV-15 16:15:00 to 11-NOV-15 16:17:00 (CST-6)
Location: PICKERING
Tornado F-scale: EF0
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Emergency Manager reported damage to several farmsteads with generally minor outbuilding and tree damage.