Storm Events Database

Event Details

Event Thunderstorm Wind
Magnitude 52 kts.
State IOWA
County/Area PALO ALTO
WFO DMX
Report Source Emergency Manager
NCDC Data Source CSV
Begin Date 2008-06-11 19:00:00.0 CST-6
Begin Location 0N MALLARD
Begin Lat/Lon 42.93/-94.68
End Date 2008-06-11 19:00:00.0 CST-6
Deaths Direct/Indirect 0/0 (fatality details below, when available...)
Injuries Direct/Indirect 0/0
Property Damage 3.00K
Crop Damage 0.00K
Episode Narrative An unseasonably strong storm system aloft was located over the northern Rockies. This produced a very strong northward push of moisture into Iowa. After the initial convection from the morning moved out of the area, some clearing spread into the southwest, west central, and parts of central Iowa. The atmosphere became very unstable with lifted indices falling to between -5 and -8 C. MUCAPE increased to around 4000 J/kg by evening. The low level jet increased to around 75 kts, feeding the storms well into the night. The environment was quite sheared with 40 to 65 kts of effective shear. Hail was limited in spite of the 400-500 J/kg of shear available in the -10 to -30 C. layer of the atmosphere. The freezing level was very high for mid June, around 15,200 feet. Downdraft CAPE was between 1000 and 1300. Precipitable water was around 1.6 inches. The LCL was in the 750 to 1250 meter range. An intense line of thunderstorms formed from eastern Nebraska into central Kansas. One tornado touched down in Crawford County near Charter Oak. Many of the storms produced pea to marble size hail, with the stronger storms producing hail around nickel size. After sunset, the storms became more wind producers. There were several reports of 60 to 70 MPH winds with considerable tree damage. The highest winds were 75 MPH in Webster County at Duncombe. The big story became the heavy rain. Many of the storms produced rainfall of 1 to 2 inches per hour, with some areas reporting total rainfall of up to 4 or 5 inches. With the very wet soil conditions across the state, it only took between 1/2 and 1 inch of rain to cause flash flooding. Water was reported across roads in many places across the state. Flash flood warnings were issued for over half of the Des Moines CWA by the time the night was done.
Event Narrative


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All events for this episode:

Location County/Zone St. Date Time T.Z. Type Mag Dth Inj PrD CrD
Totals: 0 0 2.334M 45.00K
LAURENS POCAHONTAS CO. IA 06/11/2008 18:18 CST-6 Heavy Rain 0 0 0.00K 0.00K
CHARTER OAK CRAWFORD CO. IA 06/11/2008 18:21 CST-6 Tornado EF0 0 0 0.00K 0.00K
WELLINGFORD EMMET CO. IA 06/11/2008 18:43 CST-6 Thunderstorm Wind 57 kts. EG 0 0 5.00K 0.00K
WELLINGFORD EMMET CO. IA 06/11/2008 18:43 CST-6 Thunderstorm Wind 61 kts. EG 0 0 10.00K 0.00K
ATLANTIC CASS CO. IA 06/11/2008 19:00 CST-6 Heavy Rain 0 0 0.00K 0.00K
MALLARD PALO ALTO CO. IA 06/11/2008 19:00 CST-6 Thunderstorm Wind 52 kts. EG 0 0 3.00K 0.00K
SWEA CITY KOSSUTH CO. IA 06/11/2008 19:03 CST-6 Heavy Rain 0 0 0.00K 0.00K
SWEA CITY KOSSUTH CO. IA 06/11/2008 19:27 CST-6 Thunderstorm Wind 57 kts. EG 0 0 5.00K 0.00K
HALBUR CARROLL CO. IA 06/11/2008 19:32 CST-6 Thunderstorm Wind 65 kts. EG 0 0 25.00K 0.00K
MAPLE RIVER CARROLL CO. IA 06/11/2008 19:35 CST-6 Thunderstorm Wind 61 kts. EG 0 0 5.00K 0.00K
CARROLL CARROLL CO. IA 06/11/2008 19:38 CST-6 Thunderstorm Wind 53 kts. MG 0 0 5.00K 0.00K
ARCADIA CARROLL CO. IA 06/11/2008 19:40 CST-6 Thunderstorm Wind 61 kts. EG 0 0 5.00K 0.00K
ARCADIA CARROLL CO. IA 06/11/2008 19:40 CST-6 Thunderstorm Wind 52 kts. EG 0 0 5.00K 0.00K
CARROLL CARROLL CO. IA 06/11/2008 19:45 CST-6 Thunderstorm Wind 52 kts. EG 0 0 4.00K 0.00K
MALLARD PALO ALTO CO. IA 06/11/2008 19:45 CST-6 Thunderstorm Wind 52 kts. EG 0 0 3.00K 0.00K
LIDDERDALE CARROLL CO. IA 06/11/2008 19:52 CST-6 Thunderstorm Wind 52 kts. EG 0 0 5.00K 0.00K
MALLARD PALO ALTO CO. IA 06/11/2008 20:00 CST-6 Flash Flood 0 0 25.00K 0.00K
BLAIRSBURG HAMILTON CO. IA 06/11/2008 20:26 CST-6 Thunderstorm Wind 61 kts. EG 0 0 25.00K 0.00K
FARNHAMVILLE WEBSTER CO. IA 06/11/2008 20:26 CST-6 Hail 0.88 in. 0 0 2.00K 5.00K
GOWRIE WEBSTER CO. IA 06/11/2008 20:27 CST-6 Heavy Rain 0 0 0.00K 0.00K
GLIDDEN CARROLL CO. IA 06/11/2008 20:36 CST-6 Heavy Rain 0 0 0.00K 0.00K
BUFFALO CENTER WINNEBAGO CO. IA 06/11/2008 20:40 CST-6 Thunderstorm Wind 61 kts. EG 0 0 40.00K 0.00K
GRAND JCT GREENE CO. IA 06/11/2008 20:54 CST-6 Thunderstorm Wind 56 kts. EG 0 0 10.00K 0.00K
GRAND JCT GREENE CO. IA 06/11/2008 20:56 CST-6 Hail 1.00 in. 0 0 3.00K 5.00K
JAMAICA GUTHRIE CO. IA 06/11/2008 20:56 CST-6 Hail 0.88 in. 0 0 2.00K 5.00K
FT DODGE WEBSTER CO. IA 06/11/2008 20:57 CST-6 Flash Flood 0 0 50.00K 0.00K
OGDEN BOONE CO. IA 06/11/2008 21:14 CST-6 Thunderstorm Wind 52 kts. EG 0 0 5.00K 0.00K
ATLANTIC CASS CO. IA 06/11/2008 21:20 CST-6 Flash Flood 0 0 100.00K 0.00K
ATLANTIC ARPT CASS CO. IA 06/11/2008 21:20 CST-6 Flash Flood 0 0 25.00K 0.00K
STANHOPE HAMILTON CO. IA 06/11/2008 21:20 CST-6 Thunderstorm Wind 52 kts. EG 0 0 3.00K 0.00K
DUNCOMBE WEBSTER CO. IA 06/11/2008 21:23 CST-6 Thunderstorm Wind 65 kts. EG 0 0 10.00K 0.00K
DUNCOMBE WEBSTER CO. IA 06/11/2008 21:23 CST-6 Hail 1.50 in. 0 0 10.00K 5.00K
KAMRAR HAMILTON CO. IA 06/11/2008 21:23 CST-6 Thunderstorm Wind 52 kts. EG 0 0 5.00K 0.00K
KAMRAR HAMILTON CO. IA 06/11/2008 21:29 CST-6 Thunderstorm Wind 57 kts. EG 0 0 5.00K 0.00K
BLAIRSBURG HAMILTON CO. IA 06/11/2008 21:30 CST-6 Thunderstorm Wind 57 kts. EG 0 0 25.00K 0.00K
GLIDDEN CARROLL CO. IA 06/11/2008 21:30 CST-6 Flash Flood 0 0 20.00K 0.00K
RANDALL HAMILTON CO. IA 06/11/2008 21:30 CST-6 Thunderstorm Wind 52 kts. EG 0 0 5.00K 0.00K
WILEY CARROLL CO. IA 06/11/2008 21:30 CST-6 Flash Flood 0 0 20.00K 0.00K
RANDALL HAMILTON CO. IA 06/11/2008 21:34 CST-6 Thunderstorm Wind 52 kts. EG 0 0 5.00K 0.00K
AMES STORY CO. IA 06/11/2008 21:35 CST-6 Thunderstorm Wind 57 kts. EG 0 0 5.00K 0.00K
WILLIAMS HAMILTON CO. IA 06/11/2008 21:35 CST-6 Thunderstorm Wind 61 kts. EG 0 0 100.00K 0.00K
CLARION WRIGHT CO. IA 06/11/2008 21:39 CST-6 Heavy Rain 0 0 0.00K 0.00K
FANSLERS GUTHRIE CO. IA 06/11/2008 21:39 CST-6 Flash Flood 0 0 25.00K 0.00K
JAMAICA GUTHRIE CO. IA 06/11/2008 21:43 CST-6 Flash Flood 0 0 20.00K 0.00K
WOODWARD DALLAS CO. IA 06/11/2008 21:45 CST-6 Heavy Rain 0 0 0.00K 0.00K
STORY CITY STORY CO. IA 06/11/2008 21:50 CST-6 Thunderstorm Wind 57 kts. EG 0 0 5.00K 0.00K
IOWA FALLS MUNI ARPT HARDIN CO. IA 06/11/2008 21:55 CST-6 Thunderstorm Wind 60 kts. MG 0 0 2.00K 0.00K
ADAIR ADAIR CO. IA 06/11/2008 22:00 CST-6 Flash Flood 0 0 25.00K 0.00K
BANCROFT KOSSUTH CO. IA 06/11/2008 22:00 CST-6 Flash Flood 0 0 25.00K 0.00K
WESLEY KOSSUTH CO. IA 06/11/2008 22:00 CST-6 Flash Flood 0 0 50.00K 0.00K
GENEVA FRANKLIN CO. IA 06/11/2008 22:03 CST-6 Thunderstorm Wind 61 kts. EG 0 0 2.00K 0.00K
LAURENS POCAHONTAS CO. IA 06/11/2008 22:18 CST-6 Flash Flood 0 0 150.00K 0.00K
DALLAS CENTER ARPT DALLAS CO. IA 06/11/2008 22:20 CST-6 Flash Flood 0 0 25.00K 0.00K
SLATER STORY CO. IA 06/11/2008 23:00 CST-6 Flash Flood 0 0 20.00K 0.00K
STORY CITY STORY CO. IA 06/11/2008 23:00 CST-6 Flash Flood 0 0 25.00K 0.00K
MAXWELL STORY CO. IA 06/11/2008 23:13 CST-6 Heavy Rain 0 0 0.00K 0.00K
PANTHER DALLAS CO. IA 06/11/2008 23:20 CST-6 Flash Flood 0 0 20.00K 0.00K
ZOOK SPUR DALLAS CO. IA 06/11/2008 23:26 CST-6 Flash Flood 0 0 25.00K 0.00K
WINDSOR HGTS POLK CO. IA 06/11/2008 23:30 CST-6 Heavy Rain 0 0 0.00K 0.00K
LURAY MARSHALL CO. IA 06/11/2008 23:42 CST-6 Flash Flood 0 0 50.00K 5.00K
ZOOK SPUR DALLAS CO. IA 06/11/2008 23:42 CST-6 Flash Flood 0 0 25.00K 0.00K
GOWRIE WEBSTER CO. IA 06/11/2008 23:48 CST-6 Heavy Rain 0 0 0.00K 0.00K
KELLEY STORY CO. IA 06/12/2008 00:05 CST-6 Flash Flood 0 0 25.00K 0.00K
DALLAS CENTER ARPT DALLAS CO. IA 06/12/2008 00:09 CST-6 Flash Flood 0 0 25.00K 0.00K
GRANGER DALLAS CO. IA 06/12/2008 00:10 CST-6 Flash Flood 0 0 25.00K 0.00K
DES MOINES POLK CO. IA 06/12/2008 00:17 CST-6 Flash Flood 0 0 50.00K 0.00K
WEBSTER CITY HAMILTON CO. IA 06/12/2008 00:42 CST-6 Flash Flood 0 0 25.00K 0.00K
MANNING CARROLL CO. IA 06/12/2008 00:59 CST-6 Heavy Rain 0 0 0.00K 0.00K
NORTHWOOD WORTH CO. IA 06/12/2008 01:07 CST-6 Flash Flood 0 0 25.00K 0.00K
GILBERT STORY CO. IA 06/12/2008 01:10 CST-6 Flash Flood 0 0 25.00K 0.00K
MT ETNA ADAMS CO. IA 06/12/2008 01:20 CST-6 Flash Flood 0 0 25.00K 0.00K
PATTERSON MADISON CO. IA 06/12/2008 01:32 CST-6 Flash Flood 0 0 25.00K 0.00K
CASTLE HILL BLACK HAWK CO. IA 06/12/2008 01:33 CST-6 Flash Flood 0 0 50.00K 0.00K
GUTHRIE CENTER GUTHRIE CO. IA 06/12/2008 02:34 CST-6 Flood 0 0 100.00K 10.00K
PATTERSON MADISON CO. IA 06/12/2008 02:39 CST-6 Flash Flood 0 0 20.00K 0.00K
WATERLOO BLACK HAWK CO. IA 06/12/2008 02:45 CST-6 Flash Flood 0 0 150.00K 0.00K
DES MOINES POLK CO. IA 06/12/2008 03:48 CST-6 Flood 0 0 200.00K 0.00K
TRAER MUNI ARPT TAMA CO. IA 06/12/2008 03:54 CST-6 Flash Flood 0 0 20.00K 0.00K
MONTOUR TAMA CO. IA 06/12/2008 03:55 CST-6 Flash Flood 0 0 50.00K 0.00K
ROSSERDALE ADAIR CO. IA 06/12/2008 04:09 CST-6 Flash Flood 0 0 20.00K 0.00K
HOBARTON KOSSUTH CO. IA 06/12/2008 11:05 CST-6 Flood 0 0 150.00K 10.00K
(DSM)DES MOINES INTL POLK CO. IA 06/12/2008 12:22 CST-6 Flood 0 0 250.00K 0.00K
Totals: 0 0 2.334M 45.00K