Storm Events Database

Event Details:

Event Heavy Rain
State IOWA
County/Area SAC
Report Source Trained Spotter
NCEI Data Source CSV
Begin Date 2009-05-06 14:19:00.0 CST-6
Begin Location 1SE ODEBOLT
Begin Lat/Lon 42.31/-95.25
End Date 2009-05-06 14:19:00.0 CST-6
End Location 1SE ODEBOLT
End Lat/Lon 42.31/-95.25
Deaths Direct/Indirect 0/0 (fatality details below, when available...)
Injuries Direct/Indirect 0/0
Property Damage 5.00K
Crop Damage 0.00K
Episode Narrative A weak cold front moved southeast through a weakly unstable airmass over the state. Temperatures were in the low to mid 70s ahead of the front with dew points in the mid 50s. Most unstable CAPE values were in the 1000 to 1500 J/kg range with CAPE in the -10 to -30 layer of the atmosphere in the 300 to 500 J/kg range. Lifted indices fell to between -3 and -6 with effective shear rather weak at 20 to 35 kts. The freezing level was around 10,500 feet. Precipitable water values were not all that high at just over an inch. Thunderstorms pulsed ahead of the front during the afternoon. A more organized scattered line of storms developed on the front by mid afternoon. Some of the cells became severe and produced hail up to golf ball size. In Odeboldt, in Sac County, golf ball size hail covered the ground and rainfall of 1.5 inches in a short period of time caused some local flooding in town. Other storms produced penny to nickle size hail in western Iowa.
Event Narrative An intersection in town was blocked for a short time due to the combination of runoff from rainfall of 1.5 inches and hail drifts.


Event Map:

All events for this episode:

Location County/Zone St. Date Time T.Z. Type Mag Dth Inj PrD CrD
Totals: 0 0 56.00K 0.00K
ODEBOLT SAC CO. IA 05/06/2009 14:15 CST-6 Hail 1.75 in. 0 0 25.00K 0.00K
ODEBOLT SAC CO. IA 05/06/2009 14:19 CST-6 Hail 1.75 in. 0 0 25.00K 0.00K
ODEBOLT SAC CO. IA 05/06/2009 14:19 CST-6 Heavy Rain 0 0 5.00K 0.00K
ODEBOLT SAC CO. IA 05/06/2009 14:21 CST-6 Hail 1.00 in. 0 0 1.00K 0.00K
Totals: 0 0 56.00K 0.00K