A strong low pressure developed over eastern Colorado and moved southeast into northern Oklahoma by the 24th.  Deep moisture was pulled north ahead of the low with surface dew points in the low 70s reaching northern Oklahoma.  Strong isentropic lift took place over the Des Moines CWA and resulted in a large and sustained area of rain and embedded thunderstorms.  Rainfall of two to over five inches of rainfall occurred over a large part of the CWA, with isolated amounts in the six to seven inch range over a 2 day period.  This event brought about the flash flooding event of the evening of the 24th.  The situation transitioned into a general areal flood event on the 25th, with several counties reporting serious flooding from the 25th into early on the 28th.  Many roads were either under water or washed out by the flood waters and countless basements were flooded.

Flood in APPANOOSE, IOWA
From 26-APR-07 06:00:00 to 27-APR-07 06:30:00 (CST-6)
Location: CENTERVILLE
Flood cause: Heavy Rain
Property damage: 250.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Flood in LUCAS, IOWA
From 26-APR-07 06:00:00 to 27-APR-07 06:30:00 (CST-6)
Location: LUCAS
Flood cause: Heavy Rain
Property damage: 250.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Flood in MAHASKA, IOWA
From 26-APR-07 06:00:00 to 27-APR-07 18:15:00 (CST-6)
Location: TAINTOR
Flood cause: Heavy Rain
Property damage: 250.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Flood in HAMILTON, IOWA
From 25-APR-07 14:00:00 to 26-APR-07 08:15:00 (CST-6)
Location: WEBSTER CITY
Flood cause: Heavy Rain
Property damage: 250.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Flood in STORY, IOWA
From 25-APR-07 14:00:00 to 27-APR-07 20:00:00 (CST-6)
Location: AMES
Flood cause: Heavy Rain
Property damage: 500.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Flood in POLK, IOWA
From 25-APR-07 14:00:00 to 26-APR-07 08:15:00 (CST-6)
Location: ALLEMAN
Flood cause: Heavy Rain
Property damage: 500.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Flood in DALLAS, IOWA
From 25-APR-07 09:30:00 to 28-APR-07 08:15:00 (CST-6)
Location: REDFIELD
Flood cause: Heavy Rain
Property damage: 500.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Flood in BOONE, IOWA
From 25-APR-07 14:00:00 to 27-APR-07 11:00:00 (CST-6)
Location: BOXHOLM
Flood cause: Heavy Rain
Property damage: 250.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Flood in CARROLL, IOWA
From 25-APR-07 14:00:00 to 26-APR-07 08:15:00 (CST-6)
Location: CARROLL
Flood cause: Heavy Rain
Property damage: 250.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Flood in GREENE, IOWA
From 25-APR-07 14:00:00 to 27-APR-07 08:00:00 (CST-6)
Location: CHURDAN
Flood cause: Heavy Rain
Property damage: 250.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Flood in SAC, IOWA
From 25-APR-07 14:00:00 to 26-APR-07 09:15:00 (CST-6)
Location: LAKE VIEW
Flood cause: Heavy Rain
Property damage: 250.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Flood in WEBSTER, IOWA
From 25-APR-07 14:00:00 to 26-APR-07 08:15:00 (CST-6)
Location: (FOD)FT DODGE MUNI A
Flood cause: Heavy Rain
Property damage: 250.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Flood in AUDUBON, IOWA
From 25-APR-07 14:00:00 to 26-APR-07 08:15:00 (CST-6)
Location: AUDUBON
Flood cause: Heavy Rain
Property damage: 250.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Flood in CALHOUN, IOWA
From 25-APR-07 14:00:00 to 26-APR-07 20:00:00 (CST-6)
Location: FARNHAMVILLE
Flood cause: Heavy Rain
Property damage: 250.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Flood in DAVIS, IOWA
From 26-APR-07 06:00:00 to 26-APR-07 18:15:00 (CST-6)
Location: FLORIS
Flood cause: Heavy Rain
Property damage: 250.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Flood in WAPELLO, IOWA
From 26-APR-07 06:00:00 to 27-APR-07 06:30:00 (CST-6)
Location: KIRKVILLE
Flood cause: Heavy Rain
Property damage: 350.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Flood in GUTHRIE, IOWA
From 25-APR-07 14:00:00 to 26-APR-07 20:00:00 (CST-6)
Location: ADAIR
Flood cause: Heavy Rain
Property damage: 250.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Flood in MARION, IOWA
From 26-APR-07 06:00:00 to 27-APR-07 18:15:00 (CST-6)
Location: PLEASANTVILLE
Flood cause: Heavy Rain
Property damage: 250.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Flood in MONROE, IOWA
From 26-APR-07 06:00:00 to 27-APR-07 06:30:00 (CST-6)
Location: ALBIA
Flood cause: Heavy Rain
Property damage: 250.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Flood in WAYNE, IOWA
From 26-APR-07 06:00:00 to 26-APR-07 18:15:00 (CST-6)
Location: HUMESTON
Flood cause: Heavy Rain
Property damage: 250.00K
Crop damage: 0.00K
Reported by: Law Enforcement