Tornadoes and Flash Flooding in Iowa, June 16 to 17, 2014

Name: Tornadoes and Flash Flooding in Iowa, June 16 to 17, 2014
Start: 2014-06-16T15:45
End: 2014-06-17T01:22
Location: Iowa

June 16 to 17, 2014 · NWS DMX · 91 events in 27 counties and zones

A very dynamic weather pattern was in place over over Iowa. A warm front lifted north into the state.

Where it happened

Every event with a place to put it. Tap one for its entry below.

Tornadoes
Tropical storms and surge
Floods
Wind
Hail
Winter weather
Heat and drought
Cold
Fire, smoke and dust
Marine and coastal
Other

Open the live radar over this ground

The toll

Deaths: 1
Injuries: 0
Property damage: $3.1 million
Crop damage: $46,000
Events: 91

Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.

What happened

The episode as NWS DMX wrote it up.

A very dynamic weather pattern was in place over over Iowa. A warm front lifted north into the state. Temperatures warmed in the 80s with dew point readings in the upper 60s to mid 70s. The atmosphere became very unstable with 3000 to 4000 J/kg of CAPE and downdraft CAPE of 1000 to 1500 J/kg. The shear was strong with 50 to 60 kts available. The freezing level was quite high, between 13,000 and 14,000 feet wtih CAPE in the -10 to -30 C layer of the atmosphere between 700 and 900 J/kg. The precipitable water value was a between 1.5 and 1.8 inches. The LCL was relatively low, around 1000 meters. Thunderstorms moved into western Iowa out of Nebraska. As the afternoon and evening progressed, the thunderstorm complex evolved into one that was more outflow dominated. The system raced southeast and produced high winds across the Des Moines metro area and to the east and south. Winds of 60 to 80 MPH caused considerable tree and power line damage. Power outages were reported by 27,000 customers in Des Moines at the height of the storm. As the storms moved through the heart of Des Moines, a homeless individual died when a large tree branch fell on him at a homeless settlement along the banks of the Raccoon River east of Fluer Blvd.

What forecasters said that day

The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Des Moines, IA wrote its last area forecast discussion before the first event at Jun 16, 2:17 PM CST, 1 hour 28 minutes earlier.

Area forecast discussion, Jun 16, 2:17 PM CST, 1 hour 28 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE DES MOINES IA
317 PM CDT MON JUN 16 2014

.SHORT TERM /TONIGHT/...
ISSUED AT 317 PM CDT MON JUN 16 2014

WARM FRONT...THOUGH DIFFUSE...EXTENDS FROM EAST CENTRAL NEBRASKA
INTO SENR IA.  THAT LINES UP FAIRLY CLOSE WITH THE CONVECTION
ARES AND THE MOISTURE GRADIENT AT H8 AND WITH THE
PWAT...THOUGH EACH OF THOSE AREA A BIT FARTHER NORTHEAST.  VERY
UNSTABLE AIRMASS WITH LI'S TO -12 AND CAPE ABOVE 6000 J/KG.
WITH THE STRONG SHEAR IN PLACE...SEVERE WEATHER WILL BE EASY TO
DEVELOP.  WILL EXTEND THE TOR WATCH FOR SEVERAL COUNTIES
SHORTLY.  ALSO GO WITH A FFA U.S. HIGHWAY 30 ON NORTH TONIGHT
WITH POTENTIAL FOR SIGNIFICANT RAINFALL I AREAS WHERE THE PAST
FEW DAYS HAVE BEEN QUITE WET.

.LONG TERM /TUESDAY THROUGH MONDAY/...
ISSUED AT 317 PM CDT MON JUN 16 2014

SOUTHWEST FLOW PATTERN REMAINS IN PLACE THROUGH MUCH OF THE WEEK AS
THE UPPER LEVEL TROUGH SLOWLY MEANDERS FROM THE PACIFIC NORTHWEST
EASTWARD INTO THE NORTHERN PLAINS BY THURSDAY INTO FRIDAY. THIS WILL
ALLOW FOR A CONTINUED PUSH OF WARM AIR AND MOISTURE INTO THE STATE
OVER THE NEXT FEW DAYS...WITH ENERGY LIFTING OUT OF THE WESTERN US
TROUGH AND THROUGH THE REGION WHICH SHOULD ALLOW FOR INTERMITTENT
CHANCES OF THUNDERSTORMS THROUGH THE WEEK. INITIALLY TUESDAY PUSH OF
MUCH WARMER AIR SHOULD KEEP THE AREA CAPPED ALOFT DURING THE DAYTIME
HOURS...WITH EXPECTED DEVELOPMENT ACROSS SOUTHERN MINNESOTA ON THE
EDGE OF THE CAP. THIS ACTIVITY IS EXPECTED TO DIVE SOUTHEASTWARD
THROUGH THE NORTHERN/EASTERN CWA TUESDAY NIGHT. SFC TROUGH
ASSOCIATED WITH THE WESTERN US UPPER TROUGH TO PUSH EASTWARD AND
APPROACH THE WESTERN CWA LATE WEDNESDAY INTO THURSDAY...BRINGING THE
NEXT CHANCE FOR MORE WIDESPREAD THUNDERSTORMS. EXTENDED MODELS BRING
THE COOL FRONTAL BOUNDARY THROUGH THE AREA THURSDAY...WITH WEAK
CYCLONIC FLOW ALOFT INTO FRIDAY WHICH MAY RESULT IN SOME LINGERING
CHANCES FOR THUNDERSTORMS WITH THE BULK OF THE ACTIVITY EXPECTED
LATE WEDNESDAY INTO THURSDAY. PATTERN REMAINS A BIT MORE MUDDLED
INTO THE WEEKEND WITH A FRONTAL BOUNDARY STALLED OVER THE AREA AND
WEAK CYCLONIC FLOW ALOFT. OTHERWISE UPPER RIDGING TO BUILD INTO THE
CENTRAL US FOR EARLY NEXT WEEK WHICH LOOKS TO LEND TOWARD A DRIER
FORECAST AGAIN INTO THE BEGINNING OF THE WORK WEEK.

&&

.AVIATION...16/18Z
ISSUED AT 108 PM CDT MON JUN 16 2014

CONDITIONS GENERALLY REMAINING VFR AT THE TAF SITES THIS
AFTERNOON. BAND OF MVFR CIGS NEAR THE WARM FRONT THE ONLY
EXCEPTION. AREAS OF THUNDERSTORMS OVER NORTHWEST IA WILL
EXIT...WITH NEXT ROUND MOVING SOUTHEAST OUT OF SD. THIS WILL ROLL
ACROSS THE TAF SITES TONIGHT AND TRIED TO TIME IFR CONDITIONS
WITH THE PASSAGE OF THE AREA. GUSTY WLY WINDS ON TUE WITH VFR
THROUGH THE DAY.

OUTLOOK...UNSETTLED WEATHER WILL CONTINUE THROUGH THE NEXT SEVERAL
DAYS UNDER BUILDING RIDGE ALOFT. CONDITIONS WILL BE VFR THROUGH
THE MOST PART OUTSIDE OF THUNDERSTORMS.

&&

.DMX WATCHES/WARNINGS/ADVISORIES...

FLASH FLOOD WATCH FROM 7 PM CDT THIS EVENING THROUGH TUESDAY
MORNING FOR BLACK HAWK-BREMER-BUTLER-CALHOUN-CERRO GORDO-EMMET-
FRANKLIN-GRUNDY-HAMILTON-HANCOCK-HARDIN-HUMBOLDT-KOSSUTH-PALO
ALTO-POCAHONTAS-SAC-WEBSTER-WINNEBAGO-WORTH-WRIGHT.

&&

SHORT TERM...MS JUN 14
LONG TERM...BEERENDS
AVIATION...MS JUN 14

Hazardous weather outlook, Jun 16, 2:33 PM CST, 1 hour 12 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE DES MOINES IA
333 PM CDT MON JUN 16 2014

IAZ004>007-015>017-023>028-033>039-171000-
EMMET-KOSSUTH-WINNEBAGO-WORTH-PALO ALTO-HANCOCK-CERRO GORDO-
POCAHONTAS-HUMBOLDT-WRIGHT-FRANKLIN-BUTLER-BREMER-SAC-CALHOUN-
WEBSTER-HAMILTON-HARDIN-GRUNDY-BLACK HAWK-
333 PM CDT MON JUN 16 2014

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL IOWA.

.DAY ONE...THIS AFTERNOON AND TONIGHT

A FLASH FLOOD WATCH IS IN EFFECT FOR THE AREA. PLEASE REFER TO
THE NATIONAL WEATHER SERVICE WEBSITE AT WEATHER.GOV/DESMOINES
FOR FURTHER DETAILS.

SEVERE THUNDERSTORMS ARE EXPECTED TO SPREAD ACROSS THE AREA THIS
EVENING INTO TONIGHT. VERY LARGE HAIL TO THE SIZE OF BASEBALLS...A
FEW TORNADOES AND DAMAGING WINDS ARE THE MAIN SEVERE THREATS
ACROSS THE AREA. HEAVY RAINFALL IS POSSIBLE WITH INTENSE RAINFALL
RATES EXPECTED.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

ADDITIONAL ROUNDS OF THUNDERSTORMS ARE POSSIBLE THROUGH THE
REMAINDER OF THE PERIOD WITH THE HIGHEST CHANCES TUESDAY NIGHT AND
AGAIN WEDNESDAY NIGHT THROUGH THURSDAY NIGHT. LOCALLY HEAVY RAIN
AND A FEW SEVERE THUNDERSTORMS WILL BE POSSIBLE THROUGH THE
PERIOD.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS LIKELY THIS EVENING INTO TONIGHT.

IAZ070>075-081>086-092>097-171000-
CASS-ADAIR-MADISON-WARREN-MARION-MAHASKA-ADAMS-UNION-CLARKE-LUCAS-
MONROE-WAPELLO-TAYLOR-RINGGOLD-DECATUR-WAYNE-APPANOOSE-DAVIS-
333 PM CDT MON JUN 16 2014

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL IOWA.

.DAY ONE...THIS AFTERNOON AND TONIGHT

THUNDERSTORMS ARE POSSIBLE ACROSS THE AREA THIS EVENING INTO
TONIGHT. LARGE HAIL...AN ISOLATED TORNADO AND DAMAGING WINDS ARE
THE MAIN SEVERE THREATS. HEAVY RAINFALL IS POSSIBLE WITH THE
STORMS AS WELL.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

ADDITIONAL ROUNDS OF THUNDERSTORMS ARE POSSIBLE THROUGH THE
REMAINDER OF THE PERIOD WITH THE HIGHEST CHANCES WEDNESDAY NIGHT
THROUGH THURSDAY NIGHT. LOCALLY HEAVY RAIN AND A FEW SEVERE
THUNDERSTORMS WILL BE POSSIBLE THROUGH THE PERIOD.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL BE POSSIBLE TONIGHT.

IAZ044>050-057>062-171000-
CRAWFORD-CARROLL-GREENE-BOONE-STORY-MARSHALL-TAMA-AUDUBON-GUTHRIE-
DALLAS-POLK-JASPER-POWESHIEK-
333 PM CDT MON JUN 16 2014

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL IOWA.

.DAY ONE...THIS AFTERNOON AND TONIGHT

THUNDERSTORMS ARE EXPECTED TO DEVELOP/SPREAD ACROSS THE AREA THIS
EVENING INTO TONIGHT. VERY LARGE HAIL TO THE SIZE OF BASEBALLS...A
FEW TORNADOES AND DAMAGING WINDS ARE THE MAIN SEVERE THREATS
ACROSS THE AREA. HEAVY RAINFALL IS POSSIBLE WITH THE STORMS AS
WELL.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

ADDITIONAL ROUNDS OF THUNDERSTORMS ARE POSSIBLE THROUGH THE
REMAINDER OF THE PERIOD WITH THE HIGHEST CHANCES WEDNESDAY NIGHT
THROUGH THURSDAY NIGHT. LOCALLY HEAVY RAIN AND A FEW SEVERE
THUNDERSTORMS WILL BE POSSIBLE THROUGH THE PERIOD.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL BE LIKELY THIS EVENING INTO TONIGHT.

MJB

In the hours before

Special weather statement, Jun 16, 11:00 AM CST, 4 hours 45 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
1200 PM CDT MON JUN 16 2014

IAZ044-161745-
CRAWFORD IA-
1200 PM CDT MON JUN 16 2014

...STRONG THUNDERSTORMS MOVING INTO WESTERN CRAWFORD COUNTY...

AT 1159 AM CDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 4
MILES SOUTH OF UTE...OR 17 MILES WEST OF DENISON...MOVING NORTHEAST
AT 55 MPH.

HALF INCH HAIL AND WINDS IN EXCESS OF 40 MPH WILL BE POSSIBLE WITH
THIS STORM.

LOCATIONS IMPACTED INCLUDE...
DENISON...DUNLAP...SCHLESWIG...DOW CITY...CHARTER OAK...KIRON...
DELOIT...RICKETTS...ARION AND DENISON MUNICIPAL AIRPORT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM.
LIGHTNING CAN STRIKE 15 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE
SHELTER INSIDE A BUILDING OR VEHICLE.

&&

LAT...LON 4221 9567 4221 9533 4206 9523 4186 9552
      4186 9566 4187 9567 4195 9568
TIME...MOT...LOC 1659Z 214DEG 47KT 4198 9569

REV

Special weather statement, Jun 16, 1:57 PM CST, 1 hour 48 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
257 PM CDT MON JUN 16 2014

IAZ048-049-060-061-073-074-162100-
JASPER IA-WARREN IA-STORY IA-POLK IA-MARSHALL IA-MARION IA-
257 PM CDT MON JUN 16 2014

...THUNDERSTORM HAD FORMED OVER CENTRAL IOWA...

AT 256 PM CDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 6
MILES EAST OF PLEASANT HILL...MOVING NORTHEAST AT 30 MPH.

NICKEL SIZE HAIL AND WINDS IN EXCESS OF 40 MPH WILL BE POSSIBLE WITH
THIS STORM.

LOCATIONS IMPACTED INCLUDE...
DES MOINES...ANKENY...NEWTON...ALTOONA...PLEASANT HILL...NEVADA...
CARLISLE...BONDURANT...MITCHELLVILLE...COLFAX...MONROE...
PLEASANTVILLE...PRAIRIE CITY...BAXTER...PRAIRIE MEADOWS...IOWA
SPEEDWAY...IOWA STATE FAIRGROUNDS...ADVENTURELAND AMUSEMENT PARK...
MAXWELL AND COLO.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
OFFICE IN DES MOINES .

&&

LAT...LON 4135 9326 4142 9361 4204 9349 4193 9277
TIME...MOT...LOC 1956Z 206DEG 41KT 4155 9336

JOHNSON

Local storm report, Jun 16, 2:39 PM CST, 1 hour 6 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DES MOINES IA
339 PM CDT MON JUN 16 2014

...TIME...  ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
...DATE...  ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0330 PM     FUNNEL CLOUD     5 NNW ESTHERVILLE       43.46N 94.88W
06/16/2014                   EMMET              IA   TRAINED SPOTTER

            ROTATING WALL CLOUD AND FUNNEL

&&

NWS DES MOINES IA
IRIS SYSTEM

Local storm report, Jun 16, 3:45 PM CST, 0 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DES MOINES IA
445 PM CDT MON JUN 16 2014

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0445 PM     HAIL             ESTHERVILLE             43.40N 94.83W
06/16/2014  E0.50 INCH       EMMET              IA   TRAINED SPOTTER

&&

JJOHNSON

The radar

The Sioux Falls radar (KFSD), 159 km away, was scanning. The volume nearest the first event began at 21:44 UTC.

Open the radar archive at this moment

Event by event

65 thunderstorm wind, 11 hail, 11 tornado, 2 heavy rain, 2 flash flood. Local standard time, as filed.

Hail, Emmet

When: June 16, 3:45 PM CST
Where: Emmet County, 0.5 mi E of Wellingford
Measured: 1 in hail
Reported by: Fire Department/Rescue
Coordinates: 43.320, -94.790

Thunderstorm Wind, Emmet

When: June 16, 3:57 PM CST
Where: Emmet County, 1.22 mi SE of Estherville
Measured: 61 kt (70 mph) estimated gust
Property damage: $15,000
Reported by: Trained Spotter
Coordinates: 43.410, -94.830

Tree branches of 6 to 8 inches in diameter were blown down.

Hail, Emmet

When: June 16, 4:00 PM CST
Where: Emmet County, 1.22 mi SE of Estherville
Measured: 1.75 in hail
Reported by: Trained Spotter
Coordinates: 43.410, -94.830

Hail, Emmet

When: June 16, 4:10 PM CST
Where: Emmet County, 0.84 mi ESE of Dolliver
Measured: 0.88 in hail
Reported by: Emergency Manager
Coordinates: 43.465, -94.615

Thunderstorm Wind, Emmet

When: June 16, 4:10 PM CST to 4:41 PM CST
Where: Emmet County, 1.03 mi N of Estherville Arpt
Measured: 69 kt (79 mph) measured gust
Reported by: ASOS
Coordinates: 43.415, -94.748

A 69 kt peak wind gust was recorded at 2213Z, with winds sustained or gusting above severe levels (52 kts) from 2210 to 2241Z.

Thunderstorm Wind, Palo Alto

When: June 16, 4:35 PM CST to 4:40 PM CST
Where: Palo Alto County, 1.15 mi NW of Ayrshire
Measured: 56 kt (64 mph) estimated gust
Reported by: Emergency Manager
Coordinates: 43.040, -94.868

Barn damage reported by the EM.

Tornado, Pocahontas

When: June 16, 4:44 PM CST to 4:49 PM CST
Where: Pocahontas County, 1.09 mi N of Plover to 3.3 mi NE of Plover
Rating: EF0
Path length: 2.64 mi
Path width: 250 yd
Continued into: Palo Alto, Ia (DMX)
Crop damage: $5,000
Reported by: Trained Spotter
Coordinates: 42.896, -94.627

Tornado developed northeast of Plover and moved across rural areas of northern Pocahontas county with no damage. Tornado continued into Palo Alto county.

Hail, Pocahontas

When: June 16, 4:49 PM CST
Where: Pocahontas County, 7.23 mi SSE of Rolfe
Measured: 1 in hail
Reported by: Trained Spotter
Coordinates: 42.730, -94.448

Tornado, Palo Alto

When: June 16, 4:49 PM CST to 4:55 PM CST
Where: Palo Alto County, 5.35 mi ESE of Mallard to 4.31 mi WSW of West Bend
Rating: EF0
Path length: 3.45 mi
Path width: 250 yd
Crop damage: $5,000
Reported by: Trained Spotter
Coordinates: 42.909, -94.578

This tornado entered from Pocahontas county. It continued to the northeast in rural areas of southern Palo Alto with only crop damage.

Hail, Palo Alto

When: June 16, 4:50 PM CST
Where: Palo Alto County, 1.22 mi NE of Graettinger
Measured: 0.88 in hail
Reported by: Trained Spotter
Coordinates: 43.240, -94.750

Hail, Humboldt

When: June 16, 4:53 PM CST
Where: Humboldt County, 0.27 mi NNE of Bradgate
Measured: 1 in hail
Reported by: Trained Spotter
Coordinates: 42.804, -94.418

Thunderstorm Wind, Winnebago

When: June 16, 4:55 PM CST
Where: Winnebago County, 0.62 mi ENE of Rake
Measured: 60 kt (69 mph) estimated gust
Reported by: Emergency Manager
Coordinates: 43.484, -93.919

Large limbs down along with power lines in Rake.

Hail, Humboldt

When: June 16, 5:00 PM CST
Where: Humboldt County, 2.49 mi E of Unique
Measured: 1.75 in hail
Reported by: Trained Spotter
Coordinates: 42.718, -94.301

Thunderstorm Wind, Winnebago

When: June 16, 5:02 PM CST
Where: Winnebago County, 0.5 mi NNE of Buffalo Center
Measured: 58 kt (67 mph) estimated gust
Property damage: $10,000
Reported by: Emergency Manager
Coordinates: 43.387, -93.947

Several large tree limbs down with power lines down.

Thunderstorm Wind, Kossuth

When: June 16, 5:03 PM CST
Where: Kossuth County, 0.69 mi N of Algona Muni Arpt
Measured: 54 kt (62 mph) measured gust
Reported by: AWOS
Coordinates: 43.080, -94.270

AWOS report of 54 kts came in at 2315Z. Since the AWOS reports only once every 20 minutes, the time of the actual gust was estimated from radar.

Hail, Humboldt

When: June 16, 5:04 PM CST
Where: Humboldt County, Dakota City
Measured: 0.88 in hail
Reported by: Trained Spotter
Coordinates: 42.720, -94.220

Hail, Humboldt

When: June 16, 5:04 PM CST
Where: Humboldt County, 0.97 mi E of Dakota City
Measured: 0.75 in hail
Reported by: Trained Spotter
Coordinates: 42.723, -94.201

Hail, Humboldt

When: June 16, 5:04 PM CST
Where: Humboldt County, 0.82 mi SSE of Rutland
Measured: 1.75 in hail
Reported by: Trained Spotter
Coordinates: 42.759, -94.294

Thunderstorm Wind, Kossuth

When: June 16, 5:05 PM CST
Where: Kossuth County, Algona
Measured: 56 kt (64 mph) estimated gust
Reported by: Public
Coordinates: 43.070, -94.230

Four to five inch diameter tree branches down. Dime size hail and 2 inches of ponding water on road.

Hail, Humboldt

When: June 16, 5:08 PM CST
Where: Humboldt County, 1.72 mi SW of Arnold
Measured: 3.5 in hail
Reported by: Trained Spotter
Coordinates: 42.805, -94.227

Thunderstorm Wind, Wright

When: June 16, 5:21 PM CST to 5:28 PM CST
Where: Wright County, 4.46 mi ESE of Eagle Grove
Measured: 60 kt (69 mph) estimated gust
Property damage: $40,000
Reported by: Emergency Manager
Coordinates: 42.640, -93.822

Multiple locations in SW Wright County sustained light to moderate tree damage. Light roof damage to several farm houses.

Tornado, Humboldt

When: June 16, 5:22 PM CST to 5:30 PM CST
Where: Humboldt County, 4.92 mi SE of Arnold to 3.98 mi S of Brock Ranch Arpt
Rating: EF0
Path length: 4.61 mi
Path width: 50 yd
Crop damage: $10,000
Reported by: Storm Chaser
Coordinates: 42.774, -94.126

Tornado developed just east of the East Fork of the Des Moines river and moved eastward with time. Little damage occurred.

Thunderstorm Wind, Winnebago

When: June 16, 5:28 PM CST
Where: Winnebago County, 0.77 mi SE of Forest City
Measured: 60 kt (69 mph) estimated gust
Reported by: Emergency Manager
Coordinates: 43.263, -93.638

Several power lines down and tree limbs down throughout town.

Thunderstorm Wind, Hancock

When: June 16, 5:30 PM CST
Where: Hancock County, 2.3 mi SE of Miller
Measured: 61 kt (70 mph) estimated gust
Property damage: $70,000
Reported by: Emergency Manager
Coordinates: 43.157, -93.567

Outbuilding heavily damaged. Debris strewn into a field to the ENE.

Thunderstorm Wind, Winnebago

When: June 16, 5:32 PM CST
Where: Winnebago County, Lake Mills
Measured: 58 kt (67 mph) estimated gust
Reported by: Emergency Manager
Coordinates: 43.420, -93.530

Several trees and power lines down throughout town.

Thunderstorm Wind, Winnebago

When: June 16, 5:33 PM CST
Where: Winnebago County, 0.47 mi NNW of Leland
Measured: 58 kt (67 mph) estimated gust
Property damage: $100,000
Reported by: Emergency Manager
Coordinates: 43.336, -93.634

Several power lines and trees down throughout town. Leland without electricity.

Thunderstorm Wind, Hancock

When: June 16, 5:35 PM CST
Where: Hancock County, 1.03 mi WSW of Miller
Measured: 60 kt (69 mph) estimated gust
Reported by: Emergency Manager
Coordinates: 43.172, -93.617

Several large tree limbs down near 280th and Sioux Ave (no Sioux Ave found in maps, maybe meant Sage Ave). Structural damage to a large machine shed.

Thunderstorm Wind, Hancock

When: June 16, 5:36 PM CST
Where: Hancock County, 2.32 mi SE of Miller
Measured: 65 kt (75 mph) estimated gust
Property damage: $150,000
Reported by: Emergency Manager
Coordinates: 43.156, -93.568

Machine shed completely destroyed. Damage to power lines and trees.

Thunderstorm Wind, Hamilton

When: June 16, 5:48 PM CST
Where: Hamilton County, 0.72 mi NE of Williams
Measured: 57 kt (66 mph) measured gust
Reported by: Mesonet
Coordinates: 42.487, -93.539

Tornado, Cerro Gordo

When: June 16, 5:48 PM CST to 5:53 PM CST
Where: Cerro Gordo County, 4.01 mi NNE of (Mcw)mason City Muni to 1.55 mi W of Winnebago Hgts
Rating: EF1
Path length: 3.03 mi
Path width: 110 yd
Property damage: $50,000
Crop damage: $9,000
Reported by: Emergency Manager
Coordinates: 43.206, -93.310

Tornado is evident in high resolution satellite imagery early in track when crossing open agricultural fields. Most property damage occurred toward the end of the track.

Thunderstorm Wind, Wright

When: June 16, 5:51 PM CST to 5:53 PM CST
Where: Wright County, 2.86 mi E of Palsville
Measured: 65 kt (75 mph) estimated gust
Property damage: $50,000
Reported by: Emergency Manager
Coordinates: 42.879, -93.514

Swath of wind damage in far eastern Wright County in which a tornado was embedded. Damaged trees and a grain bin.

Tornado, Wright

When: June 16, 5:52 PM CST to 5:53 PM CST
Where: Wright County, 3.29 mi E of Palsville to 3.66 mi E of Palsville
Rating: EF0
Path length: 0.4 mi
Path width: 100 yd
Continued into: Franklin, Ia (DMX)
Property damage: $2,000
Crop damage: $1,000
Reported by: Emergency Manager
Coordinates: 42.875, -93.505

Tornado spun up within a larger wind damage field in far eastern Wright county producing tree damage at a farmstead before moving into Franklin county.

Thunderstorm Wind, Cerro Gordo

When: June 16, 5:53 PM CST
Where: Cerro Gordo County, 0.86 mi NE of Clear Lake
Measured: 52 kt (60 mph) estimated gust
Reported by: Social Media
Coordinates: 43.140, -93.370

Three to four inch tree limbs down.

Tornado, Franklin

When: June 16, 5:53 PM CST to 5:56 PM CST
Where: Franklin County, 5.2 mi NNW of Alexander to 3.52 mi N of Alexander
Rating: EF1
Path length: 2.17 mi
Path width: 175 yd
Property damage: $25,000
Crop damage: $2,000
Reported by: Emergency Manager
Coordinates: 42.872, -93.499

This tornado moved in from Wright county and produce its most intense damage as it entered the county when it hit a farmstead. It then continued to the southeast remaining mostly in open farm fields.

Thunderstorm Wind, Franklin

When: June 16, 5:53 PM CST to 5:58 PM CST
Where: Franklin County, 4.76 mi N of Alexander
Measured: 91 kt (105 mph) estimated gust
Property damage: $400,000
Reported by: Emergency Manager
Coordinates: 42.869, -93.478

Swath of wind damage that began in far NE Wright County broadened and strengthened as it entered NW Franklin County. An EF1 tornado was embedded within this wind damage. Wind gusts of 70-80 mph were found in a 1 to 2 mile wide and 4 to 5 mile long corridor, with locally higher gusts over 100 mph. One house lost half of its roof and multiple outbuildings were destroyed. One hog confinement building disintegrated--its remnants scattered for over 2 miles to the south. Damage point is at the house that lost its roof. Hog building was 1.5 miles SE of this point.

Tornado, Cerro Gordo

When: June 16, 5:56 PM CST to 5:57 PM CST
Where: Cerro Gordo County, 0.64 mi W of Freeman to 0.54 mi ENE of Freeman
Rating: EF0
Path length: 1.1 mi
Path width: 40 yd
Property damage: $5,000
Crop damage: $2,000
Reported by: Emergency Manager
Coordinates: 43.222, -93.213

This tornado developed in a larger wind damage field and produced extensive tree damage done to house on west side of Highway 65. High resolution satellite imagery also had convergent area of crop residue in agricultural field east of the damage.

Thunderstorm Wind, Cerro Gordo

When: June 16, 5:57 PM CST
Where: Cerro Gordo County, 0.74 mi NE of Freeman
Measured: 65 kt (75 mph) estimated gust
Reported by: Trained Spotter
Coordinates: 43.228, -93.190

Wind damage to farm outbuildings. Roof damage to homes and power lines down along 320th St north of Mason City.

Heavy Rain, Butler

When: June 16, 6:00 PM CST to 9:27 PM CST
Where: Butler County, 1.11 mi WNW of Parkersburg
Reported by: COOP Observer
Coordinates: 42.578, -92.799

Rainfall of 3.98 inches since 7:00pm CDT (6:00pm CST).

Thunderstorm Wind, Franklin

When: June 16, 6:25 PM CST
Where: Franklin County, 0.35 mi SSW of Geneva
Measured: 70 kt (81 mph) estimated gust
Property damage: $225,000
Reported by: NWS Storm Survey
Coordinates: 42.675, -93.132

Large tree limbs down throughout the city. Empty grain bin on the east side of the town blown down.

Thunderstorm Wind, Butler

When: June 16, 6:27 PM CST to 6:37 PM CST
Where: Butler County, 1.26 mi ESE of Aredale
Measured: 70 kt (81 mph) estimated gust
Property damage: $80,000
Reported by: NWS Storm Survey
Coordinates: 42.823, -92.977

Two empty grain bins ripped from foundation and thrown 75 yards to the SE. Swath of area 4 miles south and several miles east of this point also had tree limb damage.

Thunderstorm Wind, Wright

When: June 16, 6:35 PM CST
Where: Wright County, 0.55 mi SW of Eagle Grove
Measured: 54 kt (62 mph) estimated gust
Reported by: Trained Spotter
Coordinates: 42.664, -93.907

Several tree limbs down, mostly 4 inches in diameter with a few larger.

Thunderstorm Wind, Pocahontas

When: June 16, 6:35 PM CST
Where: Pocahontas County, 7.27 mi SSE of Rolfe
Measured: 52 kt (60 mph) estimated gust
Property damage: $25,000
Reported by: Trained Spotter
Coordinates: 42.729, -94.448

Several 3 to 4 inch diameter tree limbs down, some over 6 inches.

Tornado, Butler

When: June 16, 6:39 PM CST to 6:46 PM CST
Where: Butler County, 1.9 mi NW of Allison Muni Arpt to 3.1 mi W of Clarksville
Rating: EF1
Path length: 4.71 mi
Path width: 100 yd
Property damage: $200,000
Crop damage: $5,000
Reported by: NWS Storm Survey
Coordinates: 42.792, -92.823

This is the first of three tornadoes that formed around the Clarksville area. This narrow tornado formed north of Allison and tracked just south of due east, hitting several farmsteads and causing primarily tree damage. The tornado strengthened to an EF1 as it passed over a farmstead towards the end of its track, completely destroying a barn and heavily damaging a shelter belt. The tornado dissipated shortly thereafter as the second tornado passed just to the south.

Thunderstorm Wind, Franklin

When: June 16, 6:40 PM CST to 6:41 PM CST
Where: Franklin County, 0.57 mi SSW of Hampton
Measured: 52 kt (60 mph) estimated gust
Property damage: $10,000
Reported by: Trained Spotter
Coordinates: 42.742, -93.204

Numerous branches down.

Thunderstorm Wind, Butler

When: June 16, 6:40 PM CST
Where: Butler County, 1.19 mi NW of Wilmar
Measured: 56 kt (64 mph) estimated gust
Reported by: Emergency Manager
Coordinates: 42.833, -92.836

Wind gust estimate of 65 MPH.

Thunderstorm Wind, Butler

When: June 16, 6:40 PM CST
Where: Butler County, Greene
Measured: 65 kt (75 mph) estimated gust
Reported by: Emergency Manager
Coordinates: 42.900, -92.800

Wind gusts estimated of 75 MPH.

Thunderstorm Wind, Cerro Gordo

When: June 16, 6:44 PM CST
Where: Cerro Gordo County, 0.69 mi N of (Mcw)mason City Muni
Measured: 50 kt (58 mph) measured gust
Reported by: ASOS
Coordinates: 43.160, -93.330

Thunderstorm Wind, Butler

When: June 16, 6:44 PM CST to 6:48 PM CST
Where: Butler County, 2.9 mi W of Clarksville
Measured: 70 kt (81 mph) estimated gust
Property damage: $70,000
Reported by: NWS Storm Survey
Coordinates: 42.776, -92.727

Swath of RFD winds south of the two tornadoes. Large tree snapped on farmstead. Empty grain bin rolled 75 yards to the ENE. Many tree limbs downed for a mile north and several miles E and W of this point.

Tornado, Butler

When: June 16, 6:45 PM CST to 6:48 PM CST
Where: Butler County, 2.7 mi ENE of Allison Muni Arpt to 2.33 mi W of Clarksville
Rating: EF0
Path length: 1.72 mi
Path width: 150 yd
Property damage: $400,000
Crop damage: $1,000
Reported by: NWS Storm Survey
Coordinates: 42.783, -92.750

This second tornado near Clarksville formed just south of tornado #1 as it was in the latter stages of its life. It heavily damaged multiple shelter belts and destroyed several outbuildings on a farmstead before dissipating. It caused EF1 damage to both the shelter belts and the farmstead.

Thunderstorm Wind, Butler

When: June 16, 6:48 PM CST to 6:54 PM CST
Where: Butler County, Clarksville
Measured: 70 kt (81 mph) estimated gust
Property damage: $250,000
Reported by: NWS Storm Survey
Coordinates: 42.780, -92.670

Numerous trees and power lines down throughout town. Worst trees damage was on the southern and western side of town. Most trees in this region sustained limb damage or were snapped. Winds lasted six minutes based on spotter account. The falling trees damaged several houses, buildings, and power lines.

Thunderstorm Wind, Butler

When: June 16, 6:51 PM CST
Where: Butler County, 0.59 mi NNW of Parkersburg
Measured: 55 kt (63 mph) estimated gust
Property damage: $50,000
Reported by: COOP Observer
Coordinates: 42.577, -92.786

Several large tree limbs down throughout Parkersburg.

Tornado, Butler

When: June 16, 6:52 PM CST to 6:55 PM CST
Where: Butler County, 1.94 mi E of Clarksville to 3.78 mi N of Shell Rock
Rating: EF1
Path length: 2.12 mi
Path width: 120 yd
Property damage: $200,000
Crop damage: $2,000
Reported by: NWS Storm Survey
Coordinates: 42.785, -92.632

This short-lived tornado formed east of Clarksville and caused damage to multiple shelter belts. It strengthened to an EF1 as it passed over a house and removed part of its roof. The tornado damaged another house a mile further east before dissipating shortly thereafter.

Flash Flood, Franklin

When: June 16, 6:55 PM CST to 10:00 PM CST
Where: Franklin County, 0.52 mi S of Hampton to 0.97 mi SE of Hampton
Cause: Heavy Rain
Property damage: $10,000
Reported by: Trained Spotter
Coordinates: 42.743, -93.202

At least 6 inches of water flowing cross portions of highway 3 in the Hampton area. flooding of farm fields approaching roads and highways.

Thunderstorm Wind, Butler

When: June 16, 6:56 PM CST to 6:58 PM CST
Where: Butler County, 3.82 mi NNE of Shell Rock
Measured: 70 kt (81 mph) estimated gust
Property damage: $25,000
Reported by: NWS Storm Survey
Coordinates: 42.773, -92.560

Area of wind damage downstream of the dissipating tornado east of Clarksville. Limb damage to over a dozen trees and an outbuilding with a west facing entrance was pulled from the ground.

Heavy Rain, Franklin

When: June 16, 7:00 PM CST
Where: Franklin County, 0.69 mi S of Hampton
Reported by: Trained Spotter
Coordinates: 42.740, -93.200

Rainfall 2.95 inches so far.

Tornado, Bremer

When: June 16, 7:12 PM CST to 7:16 PM CST
Where: Bremer County, 4.4 mi WNW of Tripoli to 2.45 mi W of Tripoli
Rating: EF0
Path length: 2 mi
Path width: 75 yd
Crop damage: $4,000
Reported by: Public
Coordinates: 42.813, -92.335

Public picture of tornado west of Tripoli that remained in open agricultural fields for the duration of its path.

Thunderstorm Wind, Hardin

When: June 16, 7:15 PM CST
Where: Hardin County, 1.43 mi S of Hubbard
Measured: 53 kt (61 mph) measured gust
Property damage: $25,000
Reported by: NWS Employee
Coordinates: 42.279, -93.300

Small branches damaged and a few larger ones to 9 inches in diameter.

Thunderstorm Wind, Black Hawk

When: June 16, 7:18 PM CST to 7:21 PM CST
Where: Black Hawk County, 0.28 mi NNW of (Alo)waterloo Muni A
Measured: 60 kt (69 mph) measured gust
Reported by: ASOS
Coordinates: 42.554, -92.402

Sustained winds of 60 MPH for three minutes.

Thunderstorm Wind, Black Hawk

When: June 16, 7:22 PM CST
Where: Black Hawk County, 3.42 mi ENE of (Alo)waterloo Muni A
Measured: 56 kt (64 mph) estimated gust
Reported by: Social Media
Coordinates: 42.571, -92.339

Downed trees blocking roads.

Thunderstorm Wind, Bremer

When: June 16, 7:25 PM CST to 7:27 PM CST
Where: Bremer County, 1.89 mi NNW of Buck Creek
Measured: 83 kt (96 mph) estimated gust
Property damage: $200,000
Reported by: Emergency Manager
Coordinates: 42.776, -92.160

Narrow but strong area of wind damage in east central Bremer County. Worst damage was on a farmstead (point used for this event). A barn was flattened, multiple trees were snapped, and several empty grain bins were thrown into the trees.

Thunderstorm Wind, Black Hawk

When: June 16, 7:28 PM CST
Where: Black Hawk County, 3.72 mi NW of Dewar
Measured: 59 kt (68 mph) estimated gust
Property damage: $50,000
Reported by: Trained Spotter
Coordinates: 42.556, -92.274

Winds gust estimated at 65 to 70 MPH with several tree limbs down.

Thunderstorm Wind, Grundy

When: June 16, 7:39 PM CST
Where: Grundy County, 0.71 mi S of Beaman
Measured: 52 kt (60 mph) estimated gust
Reported by: Trained Spotter
Coordinates: 42.220, -92.821

Wind gust estimated at 60 MPH.

Flash Flood, Webster

When: June 16, 7:42 PM CST to 10:00 PM CST
Where: Webster County, 0.48 mi E of Clay Works to 0.8 mi ENE of Ft Dodge
Cause: Heavy Rain
Property damage: $60,000
Reported by: Law Enforcement
Coordinates: 42.480, -94.171

Law enforcement reported several cars stalled throughout town as water was 2 to 3 feet deep in places.

Thunderstorm Wind, Tama

When: June 16, 8:20 PM CST
Where: Tama County, 2.34 mi SSW of Dysart
Measured: 52 kt (60 mph) estimated gust
Reported by: Trained Spotter
Coordinates: 42.138, -92.335

Winds gust estimated at 60 MPH. Emergency manager reported tree damage on several farmsteads in this general area as well.

Thunderstorm Wind, Boone

When: June 16, 10:31 PM CST to 10:32 PM CST
Where: Boone County, Boone Muni Arpt
Measured: 55 kt (63 mph) measured gust
Reported by: AWOS
Coordinates: 42.050, -93.850

AWOS reports in 20 minute intervals. Report of wind was in the 0435Z ob. Radar used to estimate actual time of wind gust.

Thunderstorm Wind, Crawford

When: June 16, 11:07 PM CST
Where: Crawford County, 2.89 mi E of Buck Grove
Measured: 51 kt (59 mph) measured gust
Reported by: Mesonet
Coordinates: 41.916, -95.344

Measured by an RWIS site.

Thunderstorm Wind, Dallas

When: June 16, 11:57 PM CST
Where: Dallas County, 0.39 mi ENE of Dallas Center
Measured: 56 kt (64 mph) estimated gust
Property damage: $25,000
Reported by: Fire Department/Rescue
Coordinates: 41.682, -93.963

Ten to twelve inch diameter trees down and two power poles.

Thunderstorm Wind, Polk

When: June 17, 12:04 AM CST
Where: Polk County, 1.55 mi W of Dodge Fld Arpt
Measured: 52 kt (60 mph) estimated gust
Reported by: NWS Employee
Coordinates: 41.680, -93.750

Wind gust estimate of 60 MPH.

Thunderstorm Wind, Polk

When: June 17, 12:09 AM CST
Where: Polk County, 1.16 mi WSW of Polk City
Measured: 58 kt (67 mph) measured gust
Reported by: Mesonet
Coordinates: 41.761, -93.739

Measured on the Saylorville bridge.

Thunderstorm Wind, Polk

When: June 17, 12:14 AM CST
Where: Polk County, Polk City
Measured: 56 kt (64 mph) estimated gust
Property damage: $5,000
Reported by: Social Media
Coordinates: 41.770, -93.720

Wind gust estimated at 65 MPH.

Thunderstorm Wind, Polk

When: June 17, 12:14 AM CST
Where: Polk County, 1.24 mi NE of Johnston
Measured: 56 kt (64 mph) estimated gust
Property damage: $50,000
Reported by: Trained Spotter
Coordinates: 41.680, -93.680

Estimaged 65 MPH winds broke 6 inch diameter branches.

Thunderstorm Wind, Polk

When: June 17, 12:18 AM CST
Where: Polk County, 0.69 mi N of Clover Hills
Measured: 56 kt (64 mph) estimated gust
Property damage: $25,000
Reported by: NWS Employee
Coordinates: 41.610, -93.750

Winds gusts estimated to 65 MPH with small branches down.

Thunderstorm Wind, Polk

When: June 17, 12:19 AM CST
Where: Polk County, 1.55 mi E of Windsor Hgts
Measured: 64 kt (74 mph) measured gust
Property damage: $100,000
Reported by: Public
Coordinates: 41.600, -93.690

Measured 74 MPH and dime size hail at Waveland golf course.

Thunderstorm Wind, Polk

When: June 17, 12:19 AM CST
Where: Polk County, 1.69 mi ENE of Ankeny
Measured: 51 kt (59 mph) measured gust
Property damage: $10,000
Reported by: Social Media
Coordinates: 41.740, -93.590

Thunderstorm Wind, Polk

When: June 17, 12:19 AM CST
Where: Polk County, 1.38 mi N of Ankeny
Measured: 56 kt (64 mph) estimated gust
Property damage: $5,000
Reported by: Trained Spotter
Coordinates: 41.750, -93.620

Wind gust estimated 60 to 70 MPH.

Thunderstorm Wind, Polk

When: June 17, 12:20 AM CST
Where: Polk County, 0.86 mi SE of Mitchellville
Measured: 57 kt (66 mph) measured gust
Property damage: $25,000
Reported by: Mesonet
Coordinates: 41.660, -93.520

Thunderstorm Wind, Polk

When: June 17, 12:20 AM CST
Where: Polk County, 1.12 mi W of Altoona
Measured: 52 kt (60 mph) estimated gust
Reported by: Social Media
Coordinates: 41.649, -93.492

Estimated gust.

Thunderstorm Wind, Polk

When: June 17, 12:20 AM CST
Where: Polk County, 0.3 mi NNE of Windsor Hgts
Measured: 61 kt (70 mph) estimated gust
Property damage: $20,000
Reported by: NWS Employee
Coordinates: 41.604, -93.718

Estimated 70 MPH winds downed large branches and some whole trees.

Thunderstorm Wind, Polk

When: June 17, 12:20 AM CST
Where: Polk County, 1.9 mi SW of Des Moines
Measured: 56 kt (64 mph) estimated gust
Deaths: 1 direct, 0 indirect
Property damage: $1,000
Reported by: Emergency Manager
Coordinates: 41.578, -93.642

Thunderstorm winds blew down a large tree branch. A homeless individual died when a the branch fell on him at a homeless settlement along the banks of the Raccoon River east of Fluer Blvd.

Thunderstorm Wind, Polk

When: June 17, 12:21 AM CST
Where: Polk County, 0.69 mi N of Urbandale
Measured: 54 kt (62 mph) measured gust
Property damage: $10,000
Reported by: Trained Spotter
Coordinates: 41.640, -93.720

Thunderstorm Wind, Polk

When: June 17, 12:21 AM CST
Where: Polk County, 0.81 mi NE of Swanwood
Measured: 57 kt (66 mph) measured gust
Property damage: $25,000
Reported by: AWOS
Coordinates: 41.688, -93.569

Thunderstorm Wind, Polk

When: June 17, 12:23 AM CST
Where: Polk County, 1.7 mi WSW of Des Moines
Measured: 52 kt (60 mph) estimated gust
Reported by: Trained Spotter
Coordinates: 41.590, -93.650

Winds estimated at 60 MPH.

Thunderstorm Wind, Polk

When: June 17, 12:24 AM CST
Where: Polk County, 0.7 mi WSW of Altoona
Measured: 55 kt (63 mph) estimated gust
Property damage: $10,000
Reported by: Trained Spotter
Coordinates: 41.648, -93.483

One and one half foot diameter tree downed.

Thunderstorm Wind, Polk

When: June 17, 12:26 AM CST
Where: Polk County, 2.07 mi S of Des Moines
Measured: 56 kt (64 mph) estimated gust
Property damage: $2,000
Reported by: Trained Spotter
Coordinates: 41.570, -93.620

Eight inch tree limbs snapped. Several tree limbs larger than two inches broken.

Thunderstorm Wind, Polk

When: June 17, 12:31 AM CST
Where: Polk County, 0.86 mi NE of Youngstown
Measured: 52 kt (60 mph) estimated gust
Property damage: $1,000
Reported by: Trained Spotter
Coordinates: 41.590, -93.520

Eight inch diameter tree limbs down.

Thunderstorm Wind, Jasper

When: June 17, 12:42 AM CST
Where: Jasper County, 0.35 mi SW of Prairie City
Measured: 52 kt (60 mph) estimated gust
Property damage: $5,000
Reported by: Broadcast Media
Coordinates: 41.597, -93.235

Several tree branches 6 inches in diameter down. Two food diameter tree downed.

Thunderstorm Wind, Jasper

When: June 17, 12:51 AM CST
Where: Jasper County, 0.21 mi NNW of Monroe
Measured: 54 kt (62 mph) estimated gust
Property damage: $2,000
Reported by: Trained Spotter
Coordinates: 41.523, -93.102

Winds gust estimated 58 to 65 MPH with several tree limbs down. Moved heavy patio furniture 3 to 5 feet.

Thunderstorm Wind, Marion

When: June 17, 1:00 AM CST
Where: Marion County, 0.88 mi SE of Red Rock
Measured: 54 kt (62 mph) measured gust
Reported by: Mesonet
Coordinates: 41.420, -93.110

Measured on the Red Rock bridge.

Thunderstorm Wind, Lucas

When: June 17, 1:15 AM CST
Where: Lucas County, 0.44 mi E of Chariton Muni Arpt
Measured: 57 kt (66 mph) measured gust
Property damage: $25,000
Reported by: AWOS
Coordinates: 41.019, -93.362

Thunderstorm Wind, Poweshiek

When: June 17, 1:16 AM CST
Where: Poweshiek County, 0.49 mi NE of Brooklyn
Measured: 52 kt (60 mph) measured gust
Property damage: $5,000
Reported by: Mesonet
Coordinates: 41.735, -92.444

Thunderstorm Wind, Mahaska

When: June 17, 1:22 AM CST
Where: Mahaska County, 0.51 mi ESE of Oskaloosa
Measured: 52 kt (60 mph) estimated gust
Property damage: $1,000
Reported by: Trained Spotter
Coordinates: 41.296, -92.642

A large tree about 8 inches in diameter was snapped.

The people who died

As the offices recorded each death: direct deaths were caused by the weather itself, indirect ones by something it set in motion.

Event	Date	Age	Sex	Where	Kind
Thunderstorm Wind, Polk	2014-06-17		Male	Outside/Open Areas	Direct

What these are

Hail: Hail three-quarters of an inch or larger, or smaller hail that caused damage, filed with the largest stone measured.
Thunderstorm Wind: Winds from a thunderstorm of 50 knots (58 mph) or more, or lower winds that caused damage or casualties. Measured gusts are marked MG, estimated EG.
Tornado: A violently rotating column of air in contact with the ground and extending from a thunderstorm, filed with its path, width and Fujita or Enhanced Fujita rating from the damage survey.
Heavy Rain: Rainfall totals unusual for the place and season that did not produce a flood.
Flash Flood: Flooding that begins within six hours of the rain that causes it, or of a dam or levee failure or ice jam release, often with deadly speed.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

Every storm in Iowa in 2014 Every state in 2014 This day in weather history The tornado archive for Iowa, 2014 Warnings in Iowa, June 2014

Sources

NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 512236, 512238, 512237, 512256, 512257, 530711, 518011, 512282, 518012, 512278, 527460, 512440, 512279, 512439, 512280, 512275, 512276, 512277, 512284, 512283, 530710, 518014, 512441, 530712, 512443, 512442, 512437, 512436, 512414, 518017, 530705, 518029, 512434, 518034, 530709, 518038, 512435, 512412, 512445, 530699, and more.