Hydrologic Outlooks (ESF) for heavy rainfall were issued late on the 9th and  early on the 10th ,as forecasts indicated the possibility of 1 to 3 inches of rain over south central Iowa, in an area where substantial rains fell earlier in the week. The advertised rains developed during the early morning hours of the  11th , as showers and some embedded thunderstorms dropped widespread moderate to heavy rains across most of the HSA. Amounts ending at 12Z on May 11 were highest over the south central areas including the 102 and Chariton river basins. Bedford (BEDI4) received 2.07"; Massena (MSNI4), 1.64"; Lamoni (LWD), 1.46" and Leon (LENI4), 1.20". These rains prompted the issuance of Flood Statements for the Chariton River at Chariton and for the South Fork Chariton at Promise City. The South Fork Chariton crested at 22.85 feet, it's highest level since 1993 and 6th highest on record. The 102 River at Bedford also rose rapidly, but failed to reach flood stage by over 3 feet.  Rains continued over central and north central sections through around 18Z on May 11, and storm total amounts were 1 to 2 inches over a large area, with a few locations picking up over 2.5 inches. This included Boone (BNWI4), 2.81"; Jefferson (JFFI4), 2.54" and Guthrie Center (GTHI4), 2.45". The heaviest rain fell in the upper Raccoon River basin, prompting the issuance of a River Flood Statement for minor flooding was issued late May 11 for the North Raccoon at Jefferson. A Hydrologic Outlook was also issued for the South Skunk River near Oskaloosa, which rose to near flood stage.   Damage was quite limited with the flooding this month.  Most areas saw water levels rise just above flood stage.  Where heavier flooding did occur, little buildup around these rivers has taken place.   Preliminary statistics compiled by the State Climatologist's Office for the month showed precipitation just slightly above normal statewide, with 4.14" or 0.16" higher than normal or the 56th wettest in 130 years of records.

Flood in SAC, IOWA
From 11-MAY-02 06:00:00 to 14-MAY-02 18:00:00 (CST)
Property damage: 10K
Reported by: OFFICIAL NWS OBS.

Flood in WAYNE, IOWA
From 11-MAY-02 06:00:00 to 14-MAY-02 18:00:00 (CST)
Property damage: 10K
Reported by: OFFICIAL NWS OBS.

Flood in WEBSTER, IOWA
From 11-MAY-02 06:00:00 to 14-MAY-02 18:00:00 (CST)
Property damage: 10K
Reported by: OFFICIAL NWS OBS.

Flood in POCAHONTAS, IOWA
From 11-MAY-02 06:00:00 to 14-MAY-02 18:00:00 (CST)
Property damage: 10K
Reported by: OFFICIAL NWS OBS.

Flood in DECATUR, IOWA
From 11-MAY-02 06:00:00 to 14-MAY-02 18:00:00 (CST)
Property damage: 10K
Reported by: OFFICIAL NWS OBS.

Flood in GREENE, IOWA
From 11-MAY-02 06:00:00 to 14-MAY-02 18:00:00 (CST)
Property damage: 10K
Reported by: OFFICIAL NWS OBS.

Flood in LUCAS, IOWA
From 11-MAY-02 06:00:00 to 14-MAY-02 18:00:00 (CST)
Property damage: 10K
Reported by: OFFICIAL NWS OBS.

Flood in MAHASKA, IOWA
From 11-MAY-02 06:00:00 to 14-MAY-02 18:00:00 (CST)
Property damage: 10K
Reported by: OFFICIAL NWS OBS.

Flood in MARION, IOWA
From 11-MAY-02 06:00:00 to 14-MAY-02 18:00:00 (CST)
Property damage: 10K
Reported by: OFFICIAL NWS OBS.

Flood in CALHOUN, IOWA
From 11-MAY-02 06:00:00 to 14-MAY-02 18:00:00 (CST)
Property damage: 10K
Reported by: OFFICIAL NWS OBS.

Flood in CARROLL, IOWA
From 11-MAY-02 06:00:00 to 14-MAY-02 18:00:00 (CST)
Property damage: 10K
Reported by: OFFICIAL NWS OBS.

Flood in CLARKE, IOWA
From 11-MAY-02 06:00:00 to 14-MAY-02 18:00:00 (CST)
Property damage: 10K
Reported by: OFFICIAL NWS OBS.