Iowa, 2006

Hail and Damaging Wind in Iowa, May 30, 2006

May 30, 2006 · NWS DMX · 2 events in 2 counties and zones

A cold front moved south across Iowa during the day and was stretched east-northeast to west-southwest across the southern part of the state by the late afternoon. Instability was somewhat limited with CAPE values in the 500 to 1500 J/kg range and lifted indices around -2 to -3.

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

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The toll

Deaths
0
Injuries
0
Property damage
$15,000
Crop damage
$5,000
Events
2

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 cold front moved south across Iowa during the day and was stretched east-northeast to west-southwest across the southern part of the state by the late afternoon. Instability was somewhat limited with CAPE values in the 500 to 1500 J/kg range and lifted indices around -2 to -3. The freezing level remained quite high, and was at 13,600 during the late afternoon. Thunderstorms formed by mid to late afternoon, but were not able to become very organized due to the lack of shear. Two storms did produce severe weather over southwest Iowa. One storm blew the roof off of an agricultural building southwest of Orient in Adair County, while another dropped three quarter inch diameter hail northeast of the Creston Airport in Union County.

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 May 30, 2:35 PM CST, 1 hour 21 minutes earlier.

Area forecast discussion, May 30, 2:35 PM CST, 1 hour 21 minutes before
AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE DES MOINES IA
335 PM CDT TUE MAY 30 2006

.DISCUSSION...
CDFNT HOLD NRLY STNRY ACRS THE SRN THIRD OF THE STATE AND DONT SEE
IT PROGRESSING SOUTH TOO FAST TONIGHT.  CNVCTN BGNG TO GO NOW ALNG
AND S OF THE BNDRY.  WITH SVR PARAMETERS VERY WK, DONT LOOK FOR
MUCH IN THE WAY OF SVR WX.  ISOLD SIG RAFL AMTS ARE POSSIBLE WITH
DEEP MSTR.  FRONT WL CONT TO SAG SWD WED AND WED NGT AND SHAVED BACK
THE POPS FOR BOTH PDS.  A SIG DROP FM PREV FCST AND KEPT MOST OF THE
RAIN OVR THE SRN THIRD OF THE STATE.  TEMPS WL REMAIN ABV NORM BUT
QUITE A BIT COOLER THAN THIS WKND.  SHUD SEE SOME WRM UP LATER IN
THE WEEK INTO THE WKND, BUT NOT A SUPER PUSH OF HOT AIR.  WX FOR THE
WKND A LTL MORE TRICKY WITH GFS SHWS A DECENT FFOPA SUN INTO MON.
FEEL THE GFS IS OVERAGRESSIVE WITH THIS GIVEN THE STRENGTH OF THE
ERN TROF IT IS TRYING TO DVLP.  ECMWF AND CAN ARE SIGNIFICANTLY
WEAKER WITH THE TROF.  GIVEN STATE OF THE INTRASEASONAL INDICES AND
POSITIONING OF CNVCTN IN THE IO, SUGGESTION IS TO GO WITH THE SOFTER
SOLNS.  WL BRUSH THE NERN PART OF THE CWA WITH SOME TSRA IN THE SUN
NGT TIMEFRAME.

&&

.DMX WATCHES/WARNINGS/ADVISORIES...NONE.

&&
Hazardous weather outlook, May 30, 1:26 PM CST, 2 hours 30 minutes before
HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE DES MOINES IA
226 PM CDT TUE MAY 30 2006

IAZ038-039-047>050-057>062-070>075-081>086-092>097-311100-
GRUNDY-BLACK HAWK-BOONE-STORY-MARSHALL-TAMA-AUDUBON-GUTHRIE-
DALLAS-POLK-JASPER-POWESHIEK-CASS-ADAIR-MADISON-WARREN-MARION-
MAHASKA-ADAMS-UNION-CLARKE-LUCAS-MONROE-WAPELLO-TAYLOR-RINGGOLD-
DECATUR-WAYNE-APPANOOSE-DAVIS-
226 PM CDT TUE MAY 30 2006

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL AND
SOUTHERN IOWA...ALONG AND SOUTH OF A LINE FROM WATERLOO...TO
BOONE...TO AUDUBON.

.DAY ONE...THIS AFTERNOON AND TONIGHT

SCATTERED THUNDERSTORMS WILL OCCUR ACROSS THE OUTLOOK AREA TODAY
AND TONIGHT. AN ISOLATED SEVERE STORM IS POSSIBLE THIS AFTERNOON
THROUGH EARLY EVENING MAINLY SOUTHEAST OF A WATERLOO TO NEWTON TO
LAMONI LINE. THE PRIMARY THREAT IS HAIL UP TO NICKEL SIZE.

A PERIOD OF HEAVY RAIN IS ALSO POSSIBLE. A FEW LOCATIONS MAY
RECEIVE 1 TO 1.5 INCHES OF RAIN THROUGH DAYBREAK WEDNESDAY...WITH A
AN ISOLATED AMOUNT APPROACHING 2 INCHES NOT OUT OF THE QUESTION.
ISOLATED FLASH FLOODING IS A SMALL THREAT TODAY AND TONIGHT IF HEAVY
RAINFALL REPEATEDLY OCCURS OVER ANY ONE AREA.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

SCATTERED THUNDERSTORMS WILL CONTINUE WEDNESDAY AND WEDNESDAY
NIGHT...BUT ARE NOT EXPECTED TO BE SEVERE.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED THIS AFTERNOON AND EARLY THIS
EVENING. REPORTS OF ANY HEAVY RAIN...OR ANY URBAN AND RURAL
FLOODING ARE REQUESTED.

IAZ004>007-015>017-023>028-033>037-044>046-311100-
EMMET-KOSSUTH-WINNEBAGO-WORTH-PALO ALTO-HANCOCK-CERRO GORDO-
POCAHONTAS-HUMBOLDT-WRIGHT-FRANKLIN-BUTLER-BREMER-SAC-CALHOUN-
WEBSTER-HAMILTON-HARDIN-CRAWFORD-CARROLL-GREENE-
226 PM CDT TUE MAY 30 2006

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL AND
NORTHERN IOWA...NORTH OF A LINE FROM WATERLOO...TO BOONE...TO
AUDUBON.

.DAY ONE...TODAY AND TONIGHT

WIDELY SCATTERED NON SEVERE THUNDERSTORMS MAY OCCUR THIS AFTERNOON
AND EARLY EVENING. A ISOLATED STORM COULD PRODUCE HAIL UP TO DIME
SIZE.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

SCATTERED THUNDERSTORMS ARE POSSIBLE WEDNESDAY AND WEDNESDAY
NIGHT...BUT ARE EXPECTED TO REMAIN BELOW SEVERE LIMITS.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NEEDED TODAY OR TONIGHT.

KINNEY/R

The radar

The Des Moines radar (KDMX), 86 km away, was scanning. The volume nearest the first event began at 21:57 UTC.

Open the radar archive at this moment

Event by event

1 thunderstorm wind, 1 hail. Local standard time, as filed.

Thunderstorm Wind, Adair

When
May 30, 3:56 PM CST
Where
Adair County, 2 mi SW of Orient
Measured
61 kt (70 mph) estimated gust
Property damage
$15,000
Reported by
EMERGENCY MANAGER
Coordinates
41.183, -94.450

Hail, Union

When
May 30, 4:29 PM CST
Where
Union County, 4 mi NE of Creston Arpt
Measured
0.75 in hail
Crop damage
$5,000
Reported by
TRAINED SPOTTER
Coordinates
41.050, -94.317

What these are

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.
Hail
Hail three-quarters of an inch or larger, or smaller hail that caused damage, filed with the largest stone measured.

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

The same day elsewhere

More

Every storm in Iowa in 2006Every state in 2006This day in weather historyWarnings in Iowa, May 2006

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: 5505570, 5505571.