Storm Events Database

Event Details

Event Heavy Rain
State IOWA
County/Area CLAYTON
WFO ARX
Begin Date 07/18/2012 15:20:00 CST-6
Begin Range 1
Begin Azimuth E
Begin Location MONONA
Begin Lat/Lon 43.05/-91.39
End Date 07/18/2012 15:50:00 CST-6
Deaths Direct/Indirect 0/0 (fatality details below, when available...)
Injuries Direct/Indirect 0/0
Property Damage 0.00K
Crop Damage 0.00K
Episode Narrative Severe thunderstorms developed rapidly during the late morning and afternoon along and behind a slow moving cold front. These thunderstorms initially developed over Minnesota and then moved southeast into northeast Iowa where they produced large hail and some wind damage. The largest hail reported was 1.75 inches in Ridgeway (Winneshiek County) before the storms became wind dominated. Trees were blown down or uprooted from Hesper (Winneshiek County) east through Waukon (Allamakee County) including a 65 mph gust near Calmar (Winneshiek County). 7 calves were killed when an almost 100 year old barn was blown down near Dorchester (Allamakee County).
Event Narrative In a half hour, 1.75 inches of rain fell in Monona.


All events for this episode:

Location County/Zone St. Date Time T.Z. Type Mag Dth Inj PrD CrD
Totals: 0 0 38.50K 0.00K
CRESCO HOWARD CO. IA 07/18/2012 13:35 CST-6 Flood 0 0 0.00K 0.00K
DECORAH WINNESHIEK CO. IA 07/18/2012 14:20 CST-6 Heavy Rain 0 0 0.00K 0.00K
FREDRICKSBURG CHICKASAW CO. IA 07/18/2012 14:24 CST-6 Hail 1.50 in. 0 0 0.00K 0.00K
RIDGEWAY WINNESHIEK CO. IA 07/18/2012 14:28 CST-6 Hail 1.75 in. 0 0 0.00K 0.00K
HESPER WINNESHIEK CO. IA 07/18/2012 14:45 CST-6 Thunderstorm Wind 50 kts. EG 0 0 2.00K 0.00K
DECORAH WINNESHIEK CO. IA 07/18/2012 14:49 CST-6 Thunderstorm Wind 50 kts. EG 0 0 10.00K 0.00K
SATTRE WINNESHIEK CO. IA 07/18/2012 14:49 CST-6 Thunderstorm Wind 50 kts. EG 0 0 2.00K 0.00K
BURR OAK WINNESHIEK CO. IA 07/18/2012 14:50 CST-6 Heavy Rain 0 0 0.00K 0.00K
DECORAH WINNESHIEK CO. IA 07/18/2012 14:50 CST-6 Thunderstorm Wind 50 kts. EG 0 0 0.50K 0.00K
CONOVER WINNESHIEK CO. IA 07/18/2012 15:01 CST-6 Thunderstorm Wind 56 kts. MG 0 0 0.00K 0.00K
CHESTER ALLAMAKEE CO. IA 07/18/2012 15:06 CST-6 Thunderstorm Wind 50 kts. EG 0 0 21.00K 0.00K
WEST UNION FAYETTE CO. IA 07/18/2012 15:15 CST-6 Thunderstorm Wind 50 kts. EG 0 0 3.00K 0.00K
MONONA CLAYTON CO. IA 07/18/2012 15:20 CST-6 Heavy Rain 0 0 0.00K 0.00K
Totals: 0 0 38.50K 0.00K