Storm Events Database

Storm Events Database

Event Details:

Event Tornado
-- Scale EF0
-- Length 2.5 Miles
-- Width 150 Yards
State IOWA
County/Area BREMER
WFO DMX
Report Source Emergency Manager
NCEI Data Source CSV
Begin Date 2021-07-14 17:12 CST-6
Begin Location 3SSE BUCK CREEK
Begin Lat/Lon 42.7088/-92.1195
End Date 2021-07-14 17:18 CST-6
End Location 3ESE BUCK CREEK
End Lat/Lon 42.735/-92.0856
Deaths Direct/Indirect 0/0 (fatality details below, when available...)
Injuries Direct/Indirect 0/0
Property Damage 1.00K
Crop Damage 1.00K
Episode Narrative A surface low pressure system was centered over Kansas and Nebraska with attendant warm front draped across north central Iowa. This was bisected by an outflow boundary from morning convection across western Iowa. As morning activity exited the are the atmosphere quickly recovered steep low and mid level lapse rates exceeded 8 C/km with 0-6 km shear over 40 knots. Near the remnant outflow boundary 0-1 km SRH exceeded 150 m2/s2. Storms developed along this boundary and moved east along the warm front, spawning a number of tornadoes across the state. In fact, this is in the top 5 for tornadoes occurring in a single day for the state of Iowa since reliable records began in the 1980s. By evening convection congealed into an MCS, bringing heavy rain to portions of the state. A line of training storms set up north of the Des Moines metro, resulting in localized flash flooding.
Event Narrative Emergency manager reported a tornado east of the Readlyn area. Video and high resolution satellite imagery was used to determine the path of the tornado in eastern Bremer county. The tornado remained mostly in rural agricultural land, but did produce some minor tree damage at a farmstead.


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Event Map:

Note: The tornado track is approximate based on the beginning (B) and ending (E) locations. The actual tornado path may differ from a straight line.
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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 3.848M 21.20K
ALLISON MUNI ARPT BUTLER CO. IA 07/14/2021 07:00 CST-6 Heavy Rain 0 0 0.00K 0.00K
GRUNDY CENTER GRUNDY CO. IA 07/14/2021 07:00 CST-6 Heavy Rain 0 0 0.00K 0.00K
MIDVALE STORY CO. IA 07/14/2021 07:00 CST-6 Heavy Rain 0 0 0.00K 0.00K
MONTEZUMA POWESHIEK CO. IA 07/14/2021 07:00 CST-6 Heavy Rain 0 0 0.00K 0.00K
NEWTON MUNI ARPT JASPER CO. IA 07/14/2021 07:00 CST-6 Heavy Rain 0 0 0.00K 0.00K
FORBUSH APPANOOSE CO. IA 07/14/2021 07:03 CST-6 Heavy Rain 0 0 0.00K 0.00K
NEVADA STORY CO. IA 07/14/2021 07:41 CST-6 Thunderstorm Wind 52 kts. EG 0 0 0.00K 0.00K
BLAKESBURG ARPT WAPELLO CO. IA 07/14/2021 08:00 CST-6 Heavy Rain 0 0 0.00K 0.00K
DERBY LUCAS CO. IA 07/14/2021 08:00 CST-6 Heavy Rain 0 0 0.00K 0.00K
FLORIS DAVIS CO. IA 07/14/2021 08:00 CST-6 Heavy Rain 0 0 0.00K 0.00K
GILBERTVILLE BLACK HAWK CO. IA 07/14/2021 08:00 CST-6 Heavy Rain 0 0 0.00K 0.00K
HUDSON BLACK HAWK CO. IA 07/14/2021 08:00 CST-6 Heavy Rain 0 0 0.00K 0.00K
ICONIUM APPANOOSE CO. IA 07/14/2021 08:00 CST-6 Heavy Rain 0 0 0.00K 0.00K
IOWA CENTER STORY CO. IA 07/14/2021 08:00 CST-6 Heavy Rain 0 0 0.00K 0.00K
IOWA CENTER STORY CO. IA 07/14/2021 08:00 CST-6 Heavy Rain 0 0 0.00K 0.00K
RUSSELL LUCAS CO. IA 07/14/2021 08:00 CST-6 Heavy Rain 0 0 0.00K 0.00K
SWEA CITY KOSSUTH CO. IA 07/14/2021 08:00 CST-6 Heavy Rain 0 0 0.00K 0.00K
UNIONVILLE APPANOOSE CO. IA 07/14/2021 08:00 CST-6 Heavy Rain 0 0 0.00K 0.00K
WATERLOO BLACK HAWK CO. IA 07/14/2021 08:00 CST-6 Heavy Rain 0 0 0.00K 0.00K
ICONIUM APPANOOSE CO. IA 07/14/2021 09:23 CST-6 Heavy Rain 0 0 0.00K 0.00K
LAKE CITY CALHOUN CO. IA 07/14/2021 14:52 CST-6 Tornado EF3 0 0 2.500M 5.00K
STRATFORD HAMILTON CO. IA 07/14/2021 15:05 CST-6 Tornado EF0 0 0 2.00K 3.00K
STANHOPE HAMILTON CO. IA 07/14/2021 15:21 CST-6 Tornado EF1 0 0 10.00K 4.00K
FARNHAMVILLE WEBSTER CO. IA 07/14/2021 15:46 CST-6 Tornado EFU 0 0 0.00K 0.50K
ALLISON BUTLER CO. IA 07/14/2021 15:48 CST-6 Hail 0.75 in. 0 0 0.00K 0.00K
BUTLER CENTER BUTLER CO. IA 07/14/2021 15:57 CST-6 Tornado EFU 0 0 0.00K 0.70K
NEMAHA SAC CO. IA 07/14/2021 16:11 CST-6 Tornado EFU 0 0 0.00K 0.50K
CLARKSVILLE BUTLER CO. IA 07/14/2021 16:14 CST-6 Hail 1.25 in. 0 0 0.00K 0.00K
SHELL ROCK BUTLER CO. IA 07/14/2021 16:16 CST-6 Tornado EF1 0 0 300.00K 1.00K
BABCOCK BREMER CO. IA 07/14/2021 16:21 CST-6 Tornado EF2 0 0 1.000M 2.00K
LYTTON SAC CO. IA 07/14/2021 16:35 CST-6 Tornado EFU 0 0 0.00K 0.50K
ROCKWELL CERRO GORDO CO. IA 07/14/2021 16:52 CST-6 Tornado EF0 0 0 10.00K 2.00K
ALLEMAN POLK CO. IA 07/14/2021 17:00 CST-6 Heavy Rain 0 0 0.00K 0.00K
IOWA CENTER STORY CO. IA 07/14/2021 17:00 CST-6 Heavy Rain 0 0 0.00K 0.00K
MAXWELL STORY CO. IA 07/14/2021 17:00 CST-6 Heavy Rain 0 0 0.00K 0.00K
GREEN MTN MARSHALL CO. IA 07/14/2021 17:02 CST-6 Funnel Cloud 0 0 0.00K 0.00K
BUCK CREEK BREMER CO. IA 07/14/2021 17:12 CST-6 Tornado EF0 0 0 1.00K 1.00K
WATERLOO BLACK HAWK CO. IA 07/14/2021 17:17 CST-6 Thunderstorm Wind 52 kts. EG 0 0 0.00K 0.00K
WATERLOO BLACK HAWK CO. IA 07/14/2021 17:22 CST-6 Thunderstorm Wind 52 kts. EG 0 0 0.00K 0.00K
DYSART TAMA CO. IA 07/14/2021 18:05 CST-6 Tornado EF1 0 0 25.00K 1.00K
MELBOURNE MARSHALL CO. IA 07/14/2021 19:15 CST-6 Funnel Cloud 0 0 0.00K 0.00K
COLO STORY CO. IA 07/14/2021 19:23 CST-6 Thunderstorm Wind 52 kts. EG 0 0 0.00K 0.00K
IOWA CENTER STORY CO. IA 07/14/2021 19:30 CST-6 Flash Flood 0 0 0.00K 0.00K
MAXWELL STORY CO. IA 07/14/2021 20:02 CST-6 Flash Flood 0 0 0.00K 0.00K
ALBIA MONROE CO. IA 07/14/2021 21:00 CST-6 Heavy Rain 0 0 0.00K 0.00K
ALBIA MONROE CO. IA 07/14/2021 21:00 CST-6 Heavy Rain 0 0 0.00K 0.00K
ALBIA MONROE CO. IA 07/14/2021 21:00 CST-6 Heavy Rain 0 0 0.00K 0.00K
HUMESTON WAYNE CO. IA 07/14/2021 23:30 CST-6 Heavy Rain 0 0 0.00K 0.00K
Totals: 0 0 3.848M 21.20K