A frontal boundary stalled west of the area, across central Nebraska, southeast South Dakota, and central Minnesota, and acted as an initiation point for multiple rounds of storms on the 4th and into the evening and overnight hours. While no one round was tremendous, multiple rounds added up to heavy rainfall values in excess of 3 inches in a number of locations. Given a warm, moist environment as well including precipitable water values around 2 inches and warm cloud layer depths in excess of 11-12 kft, storms were predominantly efficient rain producers.

Heavy Rain in STORY, IOWA
From 04-JUL-18 15:30:00 to 05-JUL-18 01:45:00 (CST-6)
Location: AMES
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Public reported heavy rainfall of 3.70 inches.

Heavy Rain in STORY, IOWA
From 04-JUL-18 07:00:00 to 05-JUL-18 07:00:00 (CST-6)
Location: ONTARIO
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

CoCoRaHS observer recorded heavy rainfall of 3.55 inches over the last 24 hours.

Heavy Rain in POCAHONTAS, IOWA
From 04-JUL-18 07:00:00 to 05-JUL-18 07:00:00 (CST-6)
Location: POCAHONTAS
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Coop observer recorded heavy rainfall of 2.90 inches over the last 24 hours.

Heavy Rain in POCAHONTAS, IOWA
From 04-JUL-18 07:21:00 to 05-JUL-18 07:21:00 (CST-6)
Location: POCAHONTAS
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Coop observer recorded heavy rainfall of 2.90 inches over the last 24 hours.

Heavy Rain in STORY, IOWA
From 04-JUL-18 15:00:00 to 05-JUL-18 00:00:00 (CST-6)
Location: AMES ARPT
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Ames Municipal Airport ASOS measured heavy rainfall of 2.81 inches between 4pm and 1am.

Heavy Rain in STORY, IOWA
From 04-JUL-18 01:00:00 to 05-JUL-18 01:00:00 (CST-6)
Location: AMES
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Public reported heavy rainfall of 3.25 inches over the last 24 hours near the Ames Mall.

Heavy Rain in STORY, IOWA
From 04-JUL-18 04:00:00 to 05-JUL-18 04:00:00 (CST-6)
Location: ONTARIO
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Coop observer recorded heavy rainfall of 3.02 inches over the last 24 hours.

Heavy Rain in STORY, IOWA
From 04-JUL-18 05:53:00 to 05-JUL-18 05:53:00 (CST-6)
Location: AMES ARPT
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Ames Municipal Airport recorded heavy rainfall of 3.03 inches over the last 24 hours.

Heavy Rain in STORY, IOWA
From 04-JUL-18 06:00:00 to 05-JUL-18 06:00:00 (CST-6)
Location: ONTARIO
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

CoCoRaHS observer recorded heavy rainfall of 3.55inches over the last 24 hours.

Heavy Rain in STORY, IOWA
From 04-JUL-18 06:00:00 to 05-JUL-18 06:00:00 (CST-6)
Location: AMES
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

CoCoRaHS observer recorded heavy rainfall of 3.07 inches over the last 24 hours.

Heavy Rain in STORY, IOWA
From 04-JUL-18 05:00:00 to 05-JUL-18 05:00:00 (CST-6)
Location: AMES
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

CoCoRaHS observer recorded heavy rainfall of 2.95 inches over the last 24 hours.

Heavy Rain in STORY, IOWA
From 04-JUL-18 06:00:00 to 05-JUL-18 06:00:00 (CST-6)
Location: AMES
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

CoCoRaHS observer recorded heavy rainfall of 2.95 inches over the last 24 hours.

Heavy Rain in STORY, IOWA
From 04-JUL-18 06:00:00 to 05-JUL-18 06:00:00 (CST-6)
Location: AMES
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

CoCoRaHS observer recorded heavy rainfall of 3 inches over the last 24 hours.

Heavy Rain in PALO ALTO, IOWA
From 04-JUL-18 06:00:00 to 05-JUL-18 06:00:00 (CST-6)
Location: RODMAN
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

CoCoRaHS observer recorded heavy rainfall of 2.73 inches over the last 24 hours.

Heavy Rain in STORY, IOWA
From 04-JUL-18 06:00:00 to 05-JUL-18 06:00:00 (CST-6)
Location: GILBERT
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

CoCoRaHS observer recorded heavy rainfall of 2.41 inches over the last 24 hours.

Heavy Rain in STORY, IOWA
From 04-JUL-18 06:00:00 to 05-JUL-18 06:00:00 (CST-6)
Location: STORY CITY
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Coop observer recorded heavy rainfall of 2.00 inches over the last 24 hours.

Heavy Rain in BUTLER, IOWA
From 04-JUL-18 14:30:00 to 05-JUL-18 02:30:00 (CST-6)
Location: KESLEY
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotter reported heavy rainfall of 2.00 inches.

Heavy Rain in PALO ALTO, IOWA
From 04-JUL-18 08:00:00 to 05-JUL-18 08:00:00 (CST-6)
Location: EMMETSBURG ARPT
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Coop observer recorded heavy rainfall of 2.00 inches over the last 24 hours.

Heavy Rain in STORY, IOWA
From 04-JUL-18 08:00:00 to 05-JUL-18 08:00:00 (CST-6)
Location: AMES
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Mesonet station recorded heavy rainfall of 2.71 inches over the last 24 hours.