Tornadoes and Flash Flooding in Iowa, June 4 to 5, 2008

Name: Tornadoes and Flash Flooding in Iowa, June 4 to 5, 2008
Start: 2008-06-04T16:45
End: 2008-06-05T17:00
Location: Iowa

June 4 to 5, 2008 · NWS DMX · 78 events in 19 counties and zones

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: 0
Injuries: 0
Property damage: $1.2 million
Crop damage: $107,000
Events: 78

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 strong surge of very moist and unstable air moved into Iowa as a warm front stretched east to west along the Iowa/Missouri border. By the late afternoon hours, MUCAPE was in the 3000-4000 J/kg range with lifted indices between -5 and -8 C. Downdraft cape was between 800 and 1300 J/kg with an effective shear of 45 to 50 kts. Available CAPE in the -10 to -30 C. layer of the atmosphere was between 200 and 400 J/kg. Thunderstorms erupted by the evening and a cyclic supercell developed over southwest Iowa. By the time the night was done, three separate supercells took a similar track across southern Iowa. The LCL was quite low, between 500 and 1000 meters. Several tornado reports were received from Adams into Clarke Counties. The storms also produced winds of 60 to 70 MPH in places, with the strongest winds late in the event. A gust of 77 MPH was recorded in the Pella area. Winds northwest of Baxter flipped a propane tank. Hail was limited in size by the freezing level of 13,500 to 14,000 feet. The exception was during stronger periods of the supercell's life. At on point, golf ball to baseball size hail was reported in Union County. A cluster of thunderstorms formed over northern Iowa as well. Severe weather was isolated with this area of storms. Copious amounts of rain fell with the storms, both the supercells and the cluster across the north. Flooding became widespread with numerous reports of water over the roads along the track of the supercells, and also over parts of north central into northeast Iowa. The heaviest rainfall occurred over southwest Iowa, where northwest of Creston picked up nearly 8 inches of rain. Following the heavy rainfall of the previous night, Iowa Governor Chet Culver declared state disaster areas in both Union and Humboldt Counties. Seven tornado touchdowns occurred. Four of them were EF1 in strength and had path lengths ranging from 4 to 11 miles. Three of the tornadoes touched down in Adams County and four in Union County. The final tornado in Union County crossed into Clarke County shortly before dissipating.

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 4, 2:14 PM CST, 2 hours 31 minutes earlier.

Area forecast discussion, Jun 4, 2:14 PM CST, 2 hours 31 minutes before

AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE DES MOINES IA
314 PM CDT WED JUN 4 2008

...UPDATED AVIATION DISCUSSION AND WATCHES IN EFFECT...

.SHORT TERM/TONIGHT...
FOCUS TONIGHT REMAINS ON SEVERE AND HEAVY RAIN POTENTIAL. WARM FRONT
HAS LIFTED SLOWLY NORTH TO NEAR THE IA/MO BORDER. GREATEST
INSTABILITY CURRENTLY IS TO THE SOUTHWEST IN NORTH CENTRAL KANSAS
AND SOUTHEAST NEBRASKA. LACK OF 0-3 KM CAPE IN SOUTHERN IOWA NEAR
THE WARM FRONT SUGGESTS THAT SFC BASED CONVECTION IS STILL SEVERAL
HOURS OFF IN IA. ONCE CONVECTION DOES BEGIN ALL MODES OF SVR WX ARE
POSSIBLE NEAR THE FRONTAL BOUNDARY. LATER TONIGHT THE LOW LEVEL JET
WILL FOCUS INTO THE STATE AND WILL CONTINUE TO FUEL THUNDERSTORMS
NEAR THE WARM FRONT AS IT LIFTS NORTH OVER IA. AREAS OF HEAVY
RAINFALL REMAIN POSSIBLE BUT THE FORWARD PROPAGATION OF THE STORMS
SHOULD LIMIT POTENTIAL. WILL EXPAND FLASH FLOOD WATCH NORTH TO
HIGHWAY 20 WHERE 1 TO 2 INCHES OF RAINFALL IN A SHORT PERIOD WILL
CAUSE HYDROLOGIC ISSUES GIVEN RECENT HEAVY RAINS.

.LONG TERM /THURSDAY-WEDNESDAY/...
ACTIVE PATTERN CONTINUES THROUGH MUCH OF THE FORECAST PERIOD.
NUMEROUS VIGOROUS WAVES WILL MOVE THROUGH THE FLOW DURING THE PERIOD
WHILE THE MIDWEST REMAINS CONNECTED TO THE MIDWEST. ONGOING ELEVATED
CONVECTION LIKELY ONGOING AT THE START OF THE PERIOD IN ADVANCED OF
A WARM FRONT LIFTING THROUGH THE STATE. MARGINAL SEVERE WX AND
LOCALLY HEAVY RAINFALL POSSIBLE THURSDAY MORNING HOWEVER THE BIG
SHOW STILL ON TARGET FOR THURSDAY EVENING AND OVERNIGHT. THE PRIMARY
SEVERE EVENT LIKELY TO BEGIN AFTER 00Z THURSDAY EVENING THEN TURNING
INTO A COMBINATION SEVERE AND HEAVY RAIN EVENT AFTER MIDNIGHT.
TONIGHTS RAINFALL WILL LIKELY BE A PRIMER FOR THURSDAY NIGHT.
HYDROLOGY CONCERNS WILL GREATLY INCREASE IF CENTRAL IOWA GETS ONE
INCH PLUS TONIGHT WITH THE POTENTIAL FOR A NORTH TO SOUTH 2 TO 4
INCH BAND THURSDAY NIGHT. ALL MODES FOR SEVERE WEATHER ARE LIKELY
WITH THE TORNADIC POTENTIAL ENHANCED WEST OF INTERSTATE 35. PWATS
APPROACHING 2 INCHES WITH A 60 KT LOW LEVEL JET FEEDING INTO THE
REGION WILL PROMOTE THE POTENTIAL FOR EFFICIENT RAIN PRODUCERS.
STORM MOVEMENT ALONG THE BOUNDARY SUGGESTS TRAINING POTENTIAL.

THUNDERSTORMS WILL LINGER FRIDAY MORNING THEN ANOTHER CHANCE OVER
THE EAST IN THE AFTERNOON. A BRIEF BREAK FRIDAY NIGHT AND EARLY
SATURDAY THEN THE NEXT SYSTEM BRINGS THUNDERSTORM POTENTIAL BACK BY
SATURDAY AFTERNOON AND NIGHT. POSSIBLE THAT THE WARM FRONT WILL HANG
UP OVER IOWA LEADING TO A PROLONGED THUNDERSTORM CHANCE THROUGH
MONDAY BEFORE FINALLY PUSHING TO THE NORTH BY MIDWEEK.

&&

.AVIATION 05/06Z...
THUNDERSTORMS CONTINUE OVER MUCH OF THE AREA...AFFECTING KDSM AND
KMCW...AND VERY NEAR KALO AT THIS TIME. KOTM REMAINS SOUTHEAST OF
THE ACTION BUT WILL PROBABLY GET HIT AT SOME TIME DURING THE EARLY
MORNING HOURS. THUNDERSTORMS NOT EXPECTED TO END UNTIL CLOSE TO
12Z...AFTER WHICH MVFR CIGS AND PERHAPS SOME BR/HZ WILL LINGER INTO
THE MID/LATE MORNING HOURS. ANOTHER ROUND OF THUNDERSTORMS WILL
ENTER THE PICTURE THURS EVENING/NIGHT.

&&

.DMX WATCHES/WARNINGS/ADVISORIES...
TORNADO WATCH TIL 10Z THURSDAY ALONG AND SOUTH OF HIGHWAY 3. FLASH
FLOOD WATCH TIL 12Z THURSDAY ALONG AND SOUTH OF HIGHWAY 20.

SHORT TERM...REV
LONG TERM...DONAVON
AVIATION...LEE

Hazardous weather outlook, Jun 4, 3:24 PM CST, 1 hour 21 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE DES MOINES IA
424 PM CDT WED JUN 4 2008

IAZ057>059-070>072-081>084-092>095-052130-
AUDUBON-GUTHRIE-DALLAS-CASS-ADAIR-MADISON-ADAMS-UNION-CLARKE-
LUCAS-TAYLOR-RINGGOLD-DECATUR-WAYNE-
424 PM CDT WED JUN 4 2008

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHWEST IOWA.

.DAY ONE...TONIGHT

THUNDERSTORMS WILL BE LIKELY LATE THIS AFTERNOON AND TONIGHT. LARGE
HAIL...DAMAGING WIND AND ISOLATED TORNADOES WILL BE POSSIBLE. IN
ADDITION...LOCALLY HEAVY RAINFALL WILL LIKELY CAUSE SOME FLASH
FLOODING AND MORE RIVER FLOODING.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

PERIODS OF THUNDERSTORMS WILL CONTINUE INTO FRIDAY. LARGE
HAIL...DAMAGING WIND AND ISOLATED TORNADOES WILL BE POSSIBLE. A
SIGNIFICANT SEVERE WEATHER OUTBREAK IS POSSIBLE THURSDAY AFTERNOON
AND NIGHT. THUNDERSTORM CHANCES WILL RETURN SATURDAY AFTERNOON THROUGH
SUNDAY AND POSSIBLY INTO EARLY NEXT WEEK. IN ADDITION...LOCALLY
HEAVY RAINFALL WILL LIKELY CAUSE SOME FLASH FLOODING AND MORE
RIVER FLOODING INTO NEXT WEEK.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS LIKELY FROM TIME TO TIME THROUGH THE END OF
THE WEEK.

IAZ033>039-044>050-060>062-073>075-085-086-096-097-052130-
SAC-CALHOUN-WEBSTER-HAMILTON-HARDIN-GRUNDY-BLACK HAWK-CRAWFORD-
CARROLL-GREENE-BOONE-STORY-MARSHALL-TAMA-POLK-JASPER-POWESHIEK-
WARREN-MARION-MAHASKA-MONROE-WAPELLO-APPANOOSE-DAVIS-
424 PM CDT WED JUN 4 2008

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL IOWA.

.DAY ONE...TONIGHT

THUNDERSTORMS WILL BE LIKELY TONIGHT. LARGE HAIL...DAMAGING WIND
AND ISOLATED TORNADOES WILL BE POSSIBLE. IN ADDITION...LOCALLY
HEAVY RAINFALL WILL LIKELY CAUSE SOME FLASH FLOODING AND MORE
RIVER FLOODING.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

PERIODS OF THUNDERSTORMS WILL CONTINUE INTO FRIDAY. LARGE
HAIL...DAMAGING WIND AND ISOLATED TORNADOES WILL BE POSSIBLE. A
SIGNIFICANT SEVERE WEATHER OUTBREAK IS POSSIBLE THURSDAY AFTERNOON
AND NIGHT. THUNDERSTORM CHANCES WILL RETURN SATURDAY AFTERNOON THROUGH
SUNDAY AND POSSIBLY INTO EARLY NEXT WEEK. IN ADDITION...LOCALLY
HEAVY RAINFALL WILL LIKELY CAUSE SOME FLASH FLOODING AND MORE
RIVER FLOODING INTO NEXT WEEK.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS LIKELY FROM TIME TO TIME THROUGH THE END OF
THE WEEK.

IAZ004>007-015>017-023>028-052130-
EMMET-KOSSUTH-WINNEBAGO-WORTH-PALO ALTO-HANCOCK-CERRO GORDO-
POCAHONTAS-HUMBOLDT-WRIGHT-FRANKLIN-BUTLER-BREMER-
424 PM CDT WED JUN 4 2008

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTH CENTRAL
IOWA.

.DAY ONE...TONIGHT

THUNDERSTORMS WILL BE LIKELY TONIGHT. LARGE HAIL...DAMAGING WIND
AND ISOLATED TORNADOES WILL BE POSSIBLE. IN ADDITION...LOCALLY
HEAVY RAINFALL WILL LIKELY CAUSE SOME FLASH FLOODING AND MORE
RIVER FLOODING.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

PERIODS OF THUNDERSTORMS WILL CONTINUE INTO FRIDAY. LARGE
HAIL...DAMAGING WIND AND ISOLATED TORNADOES WILL BE POSSIBLE. A
SIGNIFICANT SEVERE WEATHER OUTBREAK IS POSSIBLE THURSDAY AFTERNOON
AND NIGHT. THUNDERSTORM CHANCES WILL RETURN SATURDAY AFTERNOON THROUGH
SUNDAY AND POSSIBLY INTO EARLY NEXT WEEK. IN ADDITION...LOCALLY
HEAVY RAINFALL WILL LIKELY CAUSE SOME FLASH FLOODING AND MORE
RIVER FLOODING INTO NEXT WEEK.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS LIKELY FROM TIME TO TIME THROUGH THE END OF
THE WEEK.

The radar

The Des Moines radar (KDMX), 123 km away, was scanning. The volume nearest the first event began at 22:44 UTC.

Open the radar archive at this moment

Event by event

27 hail, 20 thunderstorm wind, 15 flash flood, 8 tornado, 3 funnel cloud, 3 flood, 2 heavy rain. Local standard time, as filed.

Hail, Adams

When: June 4, 4:45 PM CST
Where: Adams County, 3.42 mi ENE of Iveyville
Measured: 0.88 in hail
Reported by: Trained Spotter
Coordinates: 40.920, -94.720

A few nickel size stones were reported.

Hail, Adams

When: June 4, 4:55 PM CST
Where: Adams County, 0.87 mi NW of Corning
Measured: 0.75 in hail
Reported by: Trained Spotter
Coordinates: 40.990, -94.740

Dime to penny size hail reported.

Hail, Adams

When: June 4, 5:00 PM CST
Where: Adams County, 1.58 mi E of Corning
Measured: 1 in hail
Property damage: $2,000
Crop damage: $5,000
Reported by: Official NWS Observations
Coordinates: 40.977, -94.700

Hail, Union

When: June 4, 5:57 PM CST
Where: Union County, 0.87 mi SE of Creston
Measured: 0.88 in hail
Property damage: $3,000
Reported by: Emergency Manager
Coordinates: 41.060, -94.360

Nickel size hail was reported in Creston.

Hail, Union

When: June 4, 5:57 PM CST
Where: Union County, 0.52 mi E of Creston
Measured: 0.75 in hail
Reported by: Trained Spotter
Coordinates: 41.070, -94.360

Penny size hail was reported at Crest Baptist Church in Creston.

Tornado, Union

When: June 4, 6:04 PM CST to 6:07 PM CST
Where: Union County, 0.92 mi ENE of Creston Arpt to 1.76 mi ENE of Creston Arpt
Rating: EF0
Path length: 0.89 mi
Path width: 50 yd
Reported by: Amateur Radio
Coordinates: 41.027, -94.355

Amateur radio operator reported a tornado just south of Creston.

Thunderstorm Wind, Union

When: June 4, 6:12 PM CST
Where: Union County, 0.52 mi E of Creston Arpt
Measured: 62 kt (71 mph) measured gust
Property damage: $1,000
Reported by: AWOS
Coordinates: 41.020, -94.360

Funnel Cloud, Union

When: June 4, 6:31 PM CST
Where: Union County, 2.94 mi NW of Afton
Reported by: Trained Spotter
Coordinates: 41.060, -94.240

A rain wrapped funnel cloud was observed 3 miles northwest of Highway 169 and Highway 34.

Funnel Cloud, Union

When: June 4, 6:31 PM CST
Where: Union County, 3.18 mi NNW of Afton
Reported by: Trained Spotter
Coordinates: 41.070, -94.230

A spotter located at the intersection of Highway 169 and Highway 34 reported a rain wrapped funnel cloud.

Hail, Union

When: June 4, 6:45 PM CST
Where: Union County, 1.48 mi SSW of Lorimor
Measured: 1 in hail
Property damage: $3,000
Crop damage: $1,000
Reported by: Law Enforcement
Coordinates: 41.110, -94.080

Hail, Adams

When: June 4, 6:50 PM CST to 6:55 PM CST
Where: Adams County, 1.76 mi SE of Dickieville
Measured: 0.88 in hail
Property damage: $1,000
Crop damage: $5,000
Reported by: Official NWS Observations
Coordinates: 40.982, -94.896

Hail, Adams

When: June 4, 7:10 PM CST
Where: Adams County, 0.52 mi E of Carbon
Measured: 0.88 in hail
Property damage: $2,000
Crop damage: $1,000
Reported by: Storm Chaser
Coordinates: 41.050, -94.820

Tornado, Adams

When: June 4, 7:13 PM CST to 7:19 PM CST
Where: Adams County, 2.04 mi WNW of Nodaway to 2.21 mi N of Nodaway
Rating: EF0
Path length: 2.32 mi
Path width: 75 yd
Reported by: Storm Chaser
Coordinates: 40.937, -94.918

Photo from storm chaser and report from media. No damage.

Thunderstorm Wind, Adams

When: June 4, 7:19 PM CST
Where: Adams County, 1.76 mi SW of Nodaway
Measured: 52 kt (60 mph) estimated gust
Property damage: $1,000
Reported by: Official NWS Observations
Coordinates: 40.910, -94.901

Tornado, Adams

When: June 4, 7:24 PM CST to 7:48 PM CST
Where: Adams County, 1.73 mi N of Brooks to 1.75 mi NNW of Mercer
Rating: EF1
Path length: 9.49 mi
Path width: 150 yd
Property damage: $15,000
Crop damage: $5,000
Reported by: NWS Storm Survey
Coordinates: 40.975, -94.826

Rain wrapped tornado reported by KCCI TV.

Thunderstorm Wind, Adams

When: June 4, 7:27 PM CST
Where: Adams County, 2.11 mi NNW of Nodaway
Measured: 61 kt (70 mph) estimated gust
Property damage: $15,000
Reported by: Official NWS Observations
Coordinates: 40.958, -94.896

Tornado, Adams

When: June 4, 7:58 PM CST to 8:13 PM CST
Where: Adams County, 1.96 mi SW of Stringtown to 3.68 mi ENE of Stringtown
Rating: EF1
Path length: 5.63 mi
Path width: 150 yd
Property damage: $25,000
Crop damage: $5,000
Reported by: NWS Storm Survey
Coordinates: 40.954, -94.601

A storm chaser reports tornado entering southwest Corning with debris cloud.

Hail, Adams

When: June 4, 8:00 PM CST
Where: Adams County, 0.84 mi WNW of Corning Muni Arpt
Measured: 1 in hail
Property damage: $3,000
Crop damage: $5,000
Reported by: Official NWS Observations
Coordinates: 40.986, -94.784

Hail, Adams

When: June 4, 8:00 PM CST
Where: Adams County, 1.94 mi N of Prescott
Measured: 1 in hail
Property damage: $3,000
Crop damage: $5,000
Reported by: Official NWS Observations
Coordinates: 41.058, -94.632

Hail, Adams

When: June 4, 8:02 PM CST
Where: Adams County, 3.9 mi ENE of Prescott
Measured: 1.75 in hail
Property damage: $5,000
Crop damage: $5,000
Reported by: Storm Chaser
Coordinates: 41.050, -94.560

A storm chaser reported golf ball size hail about 10 miles east-northeast of Corning.

Hail, Adams

When: June 4, 8:10 PM CST
Where: Adams County, 3.61 mi E of Quincy
Measured: 1 in hail
Property damage: $2,000
Crop damage: $5,000
Reported by: Official NWS Observations
Coordinates: 41.040, -94.732

Hail, Union

When: June 4, 8:18 PM CST
Where: Union County, 0.87 mi SE of Creston
Measured: 1 in hail
Property damage: $3,000
Reported by: Amateur Radio
Coordinates: 41.060, -94.360

Amateur radio reported quarter size hail and 50 MPH winds in Creston.

Tornado, Union

When: June 4, 8:18 PM CST to 8:20 PM CST
Where: Union County, 1.42 mi NW of Kent to 1.38 mi N of Kent
Rating: EF0
Path length: 1.08 mi
Path width: 75 yd
Property damage: $5,000
Reported by: Law Enforcement
Coordinates: 40.965, -94.468

State patrol reported a tornado near Kent.

Hail, Union

When: June 4, 8:26 PM CST
Where: Union County, 0.87 mi NE of Cromwell
Measured: 1.75 in hail
Property damage: $5,000
Crop damage: $5,000
Reported by: Law Enforcement
Coordinates: 41.040, -94.460

Hail, Union

When: June 4, 8:26 PM CST
Where: Union County, 0.87 mi SE of Creston
Measured: 1 in hail
Property damage: $5,000
Reported by: Emergency Manager
Coordinates: 41.060, -94.360

Quarter size hail was reported in Creston.

Thunderstorm Wind, Union

When: June 4, 8:26 PM CST
Where: Union County, 0.87 mi NE of Cromwell
Measured: 61 kt (70 mph) estimated gust
Property damage: $2,000
Reported by: Law Enforcement
Coordinates: 41.040, -94.460

Tornado, Union

When: June 4, 8:37 PM CST to 8:56 PM CST
Where: Union County, 1.75 mi SSE of Creston Arpt to 4.08 mi E of Creston Arpt
Rating: EF1
Path length: 3.87 mi
Path width: 150 yd
Property damage: $50,000
Crop damage: $5,000
Reported by: NWS Storm Survey
Coordinates: 40.997, -94.355

Damage to power poles. A farm was hit with damage to out buildings.

Hail, Union

When: June 4, 8:40 PM CST
Where: Union County, 0.87 mi SE of Creston
Measured: 1.75 in hail
Property damage: $5,000
Crop damage: $5,000
Reported by: Law Enforcement
Coordinates: 41.060, -94.360

Heavy Rain, Union

When: June 4, 8:40 PM CST to June 5, 4:40 AM CST
Where: Union County, 4.73 mi W of Spaulding
Reported by: Broadcast Media
Coordinates: 41.140, -94.470

Thunderstorm Wind, Union

When: June 4, 8:47 PM CST
Where: Union County, 0.52 mi E of Creston Arpt
Measured: 50 kt (58 mph) measured gust
Reported by: AWOS
Coordinates: 41.020, -94.360

Thunderstorm Wind, Union

When: June 4, 8:47 PM CST
Where: Union County, 0.87 mi SE of Creston
Measured: 50 kt (58 mph) measured gust
Reported by: Mesonet
Coordinates: 41.060, -94.360

Schoolnet site.

Tornado, Union

When: June 4, 8:58 PM CST to 9:26 PM CST
Where: Union County, 1.15 mi ENE of Afton to 3.99 mi SE of Lorimor
Rating: EF1
Path length: 9.38 mi
Path width: 100 yd
Continued into: Clarke, Ia (DMX)
Reported by: Broadcast Media
Coordinates: 41.036, -94.180

Report relayed by KCCI television. Also from several storm chasers and spotters. This tornado crossed from Union County into Clarke County.

Funnel Cloud, Union

When: June 4, 9:01 PM CST
Where: Union County, 2.08 mi W of Talmage
Reported by: Law Enforcement
Coordinates: 41.030, -94.160

Hail, Union

When: June 4, 9:10 PM CST
Where: Union County, 0.52 mi E of Lorimor
Measured: 1 in hail
Property damage: $3,000
Crop damage: $5,000
Reported by: Law Enforcement
Coordinates: 41.130, -94.060

Hail, Union

When: June 4, 9:19 PM CST
Where: Union County, 1.48 mi SSE of Lorimor
Measured: 2.75 in hail
Property damage: $15,000
Crop damage: $5,000
Reported by: Law Enforcement
Coordinates: 41.110, -94.060

Hail was reported at the intersection of Highway 169 and 130th St.

Flash Flood, Webster

When: June 4, 9:25 PM CST to June 5, 4:15 AM CST
Where: Webster County, 2.25 mi W of Ft Dodge to 1.22 mi WNW of Ft Dodge
Cause: Heavy Rain
Property damage: $50,000
Reported by: Trained Spotter
Coordinates: 42.501, -94.224

Spotters reported water 3 feet deep in Fort Dodge with some roads impassible.

Hail, Madison

When: June 4, 9:26 PM CST
Where: Madison County, 2.95 mi SSW of Truro
Measured: 1 in hail
Property damage: $5,000
Crop damage: $5,000
Reported by: Law Enforcement
Coordinates: 41.180, -93.890

Tornado, Clarke

When: June 4, 9:26 PM CST to 9:33 PM CST
Where: Clarke County, 3.62 mi NW of Murray to 3.53 mi NNW of Murray
Rating: EF0
Path length: 1.54 mi
Path width: 75 yd
Property damage: $5,000
Crop damage: $5,000
Reported by: Trained Spotter
Coordinates: 41.090, -94.014

This tornado crossed over from Union County. Numerous spotters had pictures and videos of this tornado.

Hail, Madison

When: June 4, 9:30 PM CST
Where: Madison County, 1.25 mi ESE of Truro
Measured: 1 in hail
Property damage: $3,000
Crop damage: $5,000
Reported by: Trained Spotter
Coordinates: 41.210, -93.850

Flash Flood, Union

When: June 4, 9:43 PM CST to June 5, 7:45 AM CST
Where: Union County, 4.04 mi WNW of Creston to 2.71 mi ENE of Cromwell
Cause: Heavy Rain
Property damage: $100,000
Reported by: Law Enforcement
Coordinates: 41.088, -94.444

Cherry Street north of Creston was closed due to high water.

Hail, Madison

When: June 4, 9:44 PM CST
Where: Madison County, 1.71 mi WSW of Truro
Measured: 1.75 in hail
Property damage: $10,000
Crop damage: $5,000
Reported by: Law Enforcement
Coordinates: 41.210, -93.900

Hail, Warren

When: June 4, 10:04 PM CST
Where: Warren County, 2.32 mi SSW of St Marys
Measured: 1 in hail
Property damage: $3,000
Crop damage: $5,000
Reported by: Law Enforcement
Coordinates: 41.290, -93.750

Hail, Adair

When: June 4, 10:09 PM CST
Where: Adair County, 2.81 mi S of Bridgewater
Measured: 1 in hail
Property damage: $3,000
Crop damage: $5,000
Reported by: Emergency Manager
Coordinates: 41.210, -94.690

Thunderstorm Wind, Adair

When: June 4, 10:10 PM CST
Where: Adair County, 2.81 mi S of Bridgewater
Measured: 52 kt (60 mph) estimated gust
Property damage: $1,000
Reported by: Emergency Manager
Coordinates: 41.210, -94.690

Hail, Cass

When: June 4, 10:12 PM CST
Where: Cass County, 0.52 mi E of Massena
Measured: 1 in hail
Property damage: $3,000
Reported by: Trained Spotter
Coordinates: 41.250, -94.770

A trained spotter reported quarter size hail in Massena.

Flash Flood, Webster

When: June 4, 10:19 PM CST to June 5, 5:15 AM CST
Where: Webster County, 2.69 mi W of Ft Dodge to 2.12 mi W of (Fod)ft Dodge Muni A
Cause: Heavy Rain
Property damage: $25,000
Reported by: Trained Spotter
Coordinates: 42.506, -94.232

Water covered County Highway D14 near the intersection of P56 and D14. Water was at least a foot deep and 10 to 15 feet wide.

Hail, Warren

When: June 4, 10:20 PM CST
Where: Warren County, 0.69 mi S of Indianola
Measured: 1 in hail
Property damage: $5,000
Reported by: Trained Spotter
Coordinates: 41.360, -93.570

A spotter reported nickel to quarter size hail in southwest Indianola.

Hail, Warren

When: June 4, 10:24 PM CST
Where: Warren County, 0.69 mi S of Indianola
Measured: 1 in hail
Property damage: $3,000
Crop damage: $5,000
Reported by: Law Enforcement
Coordinates: 41.360, -93.570

Flash Flood, Cass

When: June 4, 10:30 PM CST to June 5, 8:47 AM CST
Where: Cass County, 0.41 mi NW of Cumberland to 0.27 mi ENE of Cumberland
Cause: Heavy Rain
Property damage: $50,000
Reported by: Trained Spotter
Coordinates: 41.274, -94.886

Flash Flood, Wright

When: June 4, 10:54 PM CST to June 5, 4:00 AM CST
Where: Wright County, Eagle Grove to 1.22 mi SE of Eagle Grove
Cause: Heavy Rain
Property damage: $50,000
Reported by: Broadcast Media
Coordinates: 42.670, -93.900

Water up to houses and flowing into basements.

Flash Flood, Wright

When: June 4, 10:54 PM CST to June 5, 4:00 AM CST
Where: Wright County, 2.06 mi NE of Goldfield to 2.28 mi NW of Clarion Arpt
Cause: Heavy Rain
Property damage: $25,000
Reported by: Law Enforcement
Coordinates: 42.750, -93.890

Eagle Creek flooded and caused water to run over Highway C54 east of Eagle Grove.

Flash Flood, Adair

When: June 4, 11:08 PM CST to June 5, 8:47 AM CST
Where: Adair County, 1.25 mi ENE of Bridgewater to 0.9 mi ENE of Bridgewater
Cause: Heavy Rain
Property damage: $10,000
Reported by: Emergency Manager
Coordinates: 41.260, -94.660

Cars were trapped in flooding along on Highway 92.

Flash Flood, Butler

When: June 4, 11:52 PM CST to June 5, 5:15 AM CST
Where: Butler County, 0.46 mi W of Dumont to 0.8 mi W of Dumont
Cause: Heavy Rain
Property damage: $20,000
Reported by: Law Enforcement
Coordinates: 42.749, -92.979

Highway 3 and Birch road had water over the road.

Heavy Rain, Bremer

When: June 5, 12:00 AM CST to 12:25 AM CST
Where: Bremer County, 0.86 mi SW of Plainfield
Reported by: Trained Spotter
Coordinates: 42.840, -92.540

Rainfall in past 25 minutes.

Thunderstorm Wind, Jasper

When: June 5, 12:02 AM CST
Where: Jasper County, 2.14 mi NNW of Clyde
Measured: 52 kt (60 mph) estimated gust
Property damage: $25,000
Reported by: Fire Department/Rescue
Coordinates: 41.860, -93.280

The Collins fire chief reported an outbuilding destroyed on 110th Ave SSE of Collins, just inside the Jasper County Line.

Thunderstorm Wind, Jasper

When: June 5, 12:07 AM CST
Where: Jasper County, 0.52 mi W of Prairie City
Measured: 50 kt (58 mph) estimated gust
Property damage: $20,000
Reported by: Broadcast Media
Coordinates: 41.600, -93.240

A two foot diameter tree was down on a house and a car.

Thunderstorm Wind, Jasper

When: June 5, 12:12 AM CST
Where: Jasper County, 1.54 mi E of Clyde
Measured: 50 kt (58 mph) estimated gust
Property damage: $10,000
Reported by: Amateur Radio
Coordinates: 41.830, -93.240

Thunderstorm Wind, Jasper

When: June 5, 12:12 AM CST
Where: Jasper County, 2.58 mi NE of Clyde
Measured: 52 kt (60 mph) estimated gust
Property damage: $2,000
Reported by: Emergency Manager
Coordinates: 41.860, -93.240

High winds uprooted a 2.5 foot diameter tree.

Thunderstorm Wind, Jasper

When: June 5, 12:12 AM CST
Where: Jasper County, 2.31 mi NNE of Clyde
Measured: 57 kt (66 mph) estimated gust
Property damage: $5,000
Reported by: Amateur Radio
Coordinates: 41.860, -93.250

Amateur Radio Operators reported a propane tank flipped.

Flash Flood, Cass

When: June 5, 12:15 AM CST to 8:47 AM CST
Where: Cass County, 2.12 mi NW of Massena to 1.95 mi ENE of Massena
Cause: Heavy Rain
Property damage: $25,000
Reported by: Law Enforcement
Coordinates: 41.269, -94.813

The Cass County Sheriff's Office reported highway 92 was closed on the west edge of Massena due to water over the bridge.

Thunderstorm Wind, Jasper

When: June 5, 12:16 AM CST
Where: Jasper County, 3.3 mi NW of Baxter
Measured: 61 kt (70 mph) estimated gust
Property damage: $35,000
Reported by: Amateur Radio
Coordinates: 41.850, -93.200

HAM operators reported the roof taken off of a house and garage.

Thunderstorm Wind, Marshall

When: June 5, 12:23 AM CST
Where: Marshall County, 4.15 mi S of Melbourne
Measured: 57 kt (66 mph) estimated gust
Property damage: $15,000
Reported by: Broadcast Media
Coordinates: 41.870, -93.100

Outbuildings were destroyed.

Flash Flood, Taylor

When: June 5, 12:25 AM CST to 6:45 AM CST
Where: Taylor County, 3.45 mi N of Siam to 3.3 mi SSE of New Market
Cause: Heavy Rain
Property damage: $5,000
Reported by: Law Enforcement
Coordinates: 40.680, -94.880

Water was over the road on Colt Ave.

Hail, Taylor

When: June 5, 12:29 AM CST
Where: Taylor County, 1.26 mi ESE of Siam
Measured: 0.88 in hail
Property damage: $3,000
Crop damage: $5,000
Reported by: Law Enforcement
Coordinates: 40.620, -94.860

Nickel size hail was reported by the Taylor County Law Enforcement.

Flash Flood, Cass

When: June 5, 12:32 AM CST to 8:47 AM CST
Where: Cass County, 2.73 mi S of Cumberland to 3.76 mi SSE of Cumberland
Cause: Heavy Rain
Property damage: $50,000
Reported by: Law Enforcement
Coordinates: 41.231, -94.883

Water damage was reported to a bridge on County Highway 28 with the highway closed south of Highway 92. Bridge was damaged 3 miles south of Highway 92.

Thunderstorm Wind, Poweshiek

When: June 5, 12:45 AM CST
Where: Poweshiek County, 0.52 mi E of Grinnell
Measured: 56 kt (64 mph) estimated gust
Property damage: $3,000
Reported by: Law Enforcement
Coordinates: 41.750, -92.720

Estimated winds of 60 to 65 MPH from the Grinnell College Security personnel.

Thunderstorm Wind, Marshall

When: June 5, 12:48 AM CST
Where: Marshall County, 0.86 mi SE of Marshalltown
Measured: 59 kt (68 mph) measured gust
Property damage: $2,000
Reported by: Mesonet
Coordinates: 42.040, -92.910

Report was received from an RWIS station.

Thunderstorm Wind, Marshall

When: June 5, 12:51 AM CST
Where: Marshall County, 0.86 mi SE of Marshalltown
Measured: 67 kt (77 mph) estimated gust
Property damage: $20,000
Reported by: Broadcast Media
Coordinates: 42.040, -92.910

Thunderstorm Wind, Ringgold

When: June 5, 1:08 AM CST
Where: Ringgold County, 2.94 mi NE of Ellston
Measured: 65 kt (75 mph) estimated gust
Property damage: $1,000
Reported by: Trained Spotter
Coordinates: 40.860, -94.060

Thunderstorm Wind, Marion

When: June 5, 2:02 AM CST
Where: Marion County, 0.86 mi SE of Pella
Measured: 67 kt (77 mph) measured gust
Property damage: $2,000
Reported by: Mesonet
Coordinates: 41.410, -92.920

Report received from an RWIS site.

Flash Flood, Madison

When: June 5, 2:13 AM CST to 3:45 AM CST
Where: Madison County, 1.48 mi SSE of Macksburg to 3.58 mi NE of Barney
Cause: Heavy Rain
Property damage: $10,000
Reported by: Law Enforcement
Coordinates: 41.200, -94.170

Flooding on 330th east of Highway 169.

Flash Flood, Madison

When: June 5, 2:13 AM CST to 3:45 AM CST
Where: Madison County, 1.38 mi S of East Peru to 1.87 mi SW of East Peru
Cause: Heavy Rain
Property damage: $10,000
Reported by: Law Enforcement
Coordinates: 41.210, -93.930

Clanton creek south of East Peru was flooding roads 3 feet deep.

Flash Flood, Adams

When: June 5, 2:25 AM CST to 6:45 AM CST
Where: Adams County, 3.13 mi E of Stringtown to 5.1 mi ENE of Stringtown
Cause: Heavy Rain
Property damage: $25,000
Reported by: Law Enforcement
Coordinates: 40.970, -94.510

Water was running over Highway 34.

Thunderstorm Wind, Mahaska

When: June 5, 3:57 AM CST
Where: Mahaska County, 4.18 mi S of Fremont
Measured: 52 kt (60 mph) estimated gust
Property damage: $2,000
Reported by: NWS Employee
Coordinates: 41.160, -92.420

Numerous large tree branches down. Power lines down on the east side of Highway 23.

Flash Flood, Butler

When: June 5, 4:15 AM CST to 5:15 AM CST
Where: Butler County, 2.72 mi NE of Allison Muni Arpt to 2.32 mi SSW of Packard
Cause: Heavy Rain
Property damage: $25,000
Reported by: Law Enforcement
Coordinates: 42.799, -92.764

Road was washed out at 180th Street.

Flood, Madison

When: June 5, 4:30 AM CST to 10:30 AM CST
Where: Madison County, 2.67 mi NW of East Peru to 1.73 mi N of Peru
Cause: Heavy Rain
Property damage: $100,000
Reported by: Law Enforcement
Coordinates: 41.254, -93.970

Homes were beginning to flood.

Flood, Hamilton

When: June 5, 7:50 AM CST to 10:50 AM CST
Where: Hamilton County, 2.71 mi NNW of Kamrar to 3.02 mi NNW of Kamrar
Cause: Heavy Rain
Property damage: $25,000
Reported by: Law Enforcement
Coordinates: 42.436, -93.751

Flood, Adams

When: June 5, 9:49 AM CST to 5:00 PM CST
Where: Adams County, 0.87 mi NW of Corning to 0.72 mi NNW of Corning
Cause: Heavy Rain
Property damage: $200,000
Reported by: NWS Storm Survey
Coordinates: 40.990, -94.740

Several houses and businesses on the northeast side of Corning have been inundated with water.

What these are

Hail: Hail three-quarters of an inch or larger, or smaller hail that caused damage, filed with the largest stone measured.
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.
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.
Funnel Cloud: A rotating column of cloud extending from a thunderstorm that did not reach the ground.
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.
Flood: Flooding that develops more slowly than a flash flood: rivers leaving their banks, or water standing over land for an extended time.

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

The same day elsewhere

Every storm in Iowa in 2008 Every state in 2008 This day in weather history The tornado archive for Iowa, 2008 Warnings in Iowa, June 2008

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: 92523, 92524, 92590, 92525, 92526, 92934, 92575, 92520, 92521, 92527, 92585, 92528, 96877, 92587, 92935, 92588, 92936, 92586, 92589, 92529, 92591, 92530, 92940, 92531, 92533, 92576, 92938, 92534, 92550, 92577, 92578, 92941, 92522, 92535, 92536, 92592, 92537, 92943, 92538, 92593, and more.