A shortwave pushed across the area in the overnight to morning hours of July 9th, triggering severe storms over portions of western Iowa in the early morning hours. Storms weakened as they moved east into more stable air, however one cell did develop quarter to golf ball sized hail in Adair county.  As the early morning convection continued to weaken and move southeast, additional cells developed in late morning along outflow boundaries left across northern Iowa. By midday a single dominant cell strengthened over central Iowa and dove south southeast. This cell dropped golf ball to baseball sized hail northwest of and across the Des Moines metro through early afternoon. It then dissipated quickly just southeast of the Des Moines metro. The atmosphere recovered through the rest of the afternoon as surface based cape soared to 5000+ J/kg in southwest Iowa paired with 50 knots of 0-6 km shear.  Storms developed once more in the late afternoon across eastern Iowa along the outflow boundary put out by the midday supercell. Though the environment was supportive, no storms reached severe thresholds. Overnight yet another round of convection rolled across southern Iowa, producing heavy rain and pushing all lingering convection across eastern Iowa out of the area.

Heavy Rain in ADAIR, IOWA
From 09-JUL-21 05:00:00 to 10-JUL-21 05:00:00 (CST-6)
Location: GREENFIELD
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

A 24 hour rain total of 3.00 inches.

Heavy Rain in POLK, IOWA
From 09-JUL-21 05:35:00 to 10-JUL-21 05:35:00 (CST-6)
Location: POLK CITY
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

A 24 hour rain total of 2.62 inches.

Hail in POLK, IOWA
From 09-JUL-21 13:23:00 to 09-JUL-21 13:23:00 (CST-6)
Location: FT DES MOINES
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail was ongoing at time of report.

Hail in WARREN, IOWA
From 09-JUL-21 13:36:00 to 09-JUL-21 13:36:00 (CST-6)
Location: CLARKSON
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail was ongoing at time of report.

Hail in POLK, IOWA
From 09-JUL-21 12:55:00 to 09-JUL-21 12:55:00 (CST-6)
Location: GRIMES
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Report via mping app.

Heavy Rain in ADAIR, IOWA
From 09-JUL-21 06:00:00 to 10-JUL-21 06:00:00 (CST-6)
Location: ADAIR
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

A 24 hour rain total of 2.30 inches.

Heavy Rain in CLARKE, IOWA
From 09-JUL-21 06:12:00 to 10-JUL-21 06:12:00 (CST-6)
Location: MURRAY
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A 24 hour rain total of 3.10 inches.

Heavy Rain in WARREN, IOWA
From 09-JUL-21 10:08:00 to 10-JUL-21 10:08:00 (CST-6)
Location: NEW VIRGINIA
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A 24 hour rain total of 2.40 inches.

Hail in POLK, IOWA
From 09-JUL-21 13:01:00 to 09-JUL-21 13:01:00 (CST-6)
Location: LOVINGTON
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Report via mping app.

Hail in POLK, IOWA
From 09-JUL-21 13:01:00 to 09-JUL-21 13:01:00 (CST-6)
Location: DODGE FLD ARPT
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Report via mping app.

Hail in ADAIR, IOWA
From 09-JUL-21 07:15:00 to 09-JUL-21 07:15:00 (CST-6)
Location: FISK
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Mostly quarter sized hail with a few stones up to golf ball sized. Ground was white with hail. No wind.

Hail in ADAIR, IOWA
From 09-JUL-21 07:33:00 to 09-JUL-21 07:33:00 (CST-6)
Location: GREENFIELD ARPT
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Delayed report of quarter sized hail. Time estimated via radar.

Hail in POLK, IOWA
From 09-JUL-21 13:11:00 to 09-JUL-21 13:11:00 (CST-6)
Location: URBANDALE
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in BOONE, IOWA
From 09-JUL-21 12:21:00 to 09-JUL-21 12:21:00 (CST-6)
Location: BERKLEY
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Hail in POLK, IOWA
From 09-JUL-21 12:56:00 to 09-JUL-21 12:56:00 (CST-6)
Location: DODGE FLD ARPT
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Report via mping app.

Hail in POLK, IOWA
From 09-JUL-21 13:14:00 to 09-JUL-21 13:14:00 (CST-6)
Location: LOVINGTON
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Hail sized ranged from three quarters of an inch to as large as ping pong ball sized.

Heavy Rain in TAYLOR, IOWA
From 09-JUL-21 05:45:00 to 10-JUL-21 05:45:00 (CST-6)
Location: GUSS
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

A 24 hour rain total of 2.90 inches.

Hail in BOONE, IOWA
From 09-JUL-21 12:23:00 to 09-JUL-21 12:23:00 (CST-6)
Location: LUTHER
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Hail in WARREN, IOWA
From 09-JUL-21 13:49:00 to 09-JUL-21 13:49:00 (CST-6)
Location: BEECH
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in POLK, IOWA
From 09-JUL-21 12:58:00 to 09-JUL-21 12:58:00 (CST-6)
Location: DODGE FLD ARPT
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Report via mping app.

Heavy Rain in DECATUR, IOWA
From 09-JUL-21 06:00:00 to 10-JUL-21 06:00:00 (CST-6)
Location: (30I)LAMONI MUNI ARP
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

A 24 hour rain total of 2.23 inches.

Hail in RINGGOLD, IOWA
From 09-JUL-21 21:24:00 to 09-JUL-21 21:24:00 (CST-6)
Location: MT AYR
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy Rain in RINGGOLD, IOWA
From 09-JUL-21 06:30:00 to 10-JUL-21 06:30:00 (CST-6)
Location: TINGLEY
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Report from a trained spotter via social media of 2.65 inches of rain.

Hail in POLK, IOWA
From 09-JUL-21 13:01:00 to 09-JUL-21 13:01:00 (CST-6)
Location: HERROLD
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Report via mping app.

Heavy Rain in LUCAS, IOWA
From 09-JUL-21 07:00:00 to 10-JUL-21 07:00:00 (CST-6)
Location: NORWOOD
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

A 24 hour rain total of 4.18 inches.

Hail in POLK, IOWA
From 09-JUL-21 13:01:00 to 09-JUL-21 13:01:00 (CST-6)
Location: URBANDALE
Magnitude: 2.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Report via mping app.

Hail in POLK, IOWA
From 09-JUL-21 13:06:00 to 09-JUL-21 13:06:00 (CST-6)
Location: WINDSOR HGTS
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Largest hail was golf ball sized and fell around 206pm local time.

Hail in BOONE, IOWA
From 09-JUL-21 11:43:00 to 09-JUL-21 11:43:00 (CST-6)
Location: BOXHOLM
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Report via mping app.

Hail in BOONE, IOWA
From 09-JUL-21 11:50:00 to 09-JUL-21 11:50:00 (CST-6)
Location: WOLF
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in BOONE, IOWA
From 09-JUL-21 12:27:00 to 09-JUL-21 12:27:00 (CST-6)
Location: MADRID
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Hail in POLK, IOWA
From 09-JUL-21 13:15:00 to 09-JUL-21 13:15:00 (CST-6)
Location: DES MOINES
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Most hail at 31st and Ingersoll Avenue was dime to nickel sized, however up to 1.5 inch hail fell at time of report.

Hail in POLK, IOWA
From 09-JUL-21 13:15:00 to 09-JUL-21 13:15:00 (CST-6)
Location: LOVINGTON
Magnitude: 3.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Picture via social media of 3.25 inch hail in Beaverdale. Time estimated via radar.

Hail in DALLAS, IOWA
From 09-JUL-21 12:28:00 to 09-JUL-21 12:28:00 (CST-6)
Location: WOODWARD
Magnitude: 2.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in POLK, IOWA
From 09-JUL-21 12:59:00 to 09-JUL-21 12:59:00 (CST-6)
Location: RIDER
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

Hail in POLK, IOWA
From 09-JUL-21 13:00:00 to 09-JUL-21 13:00:00 (CST-6)
Location: DODGE FLD ARPT
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy Rain in LUCAS, IOWA
From 09-JUL-21 06:00:00 to 10-JUL-21 06:00:00 (CST-6)
Location: CHARITON MUNI ARPT
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

A 24 hour rain total of 2.42 inches.

Heavy Rain in WAYNE, IOWA
From 09-JUL-21 06:00:00 to 10-JUL-21 06:00:00 (CST-6)
Location: ALLERTON
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

A 24 hour rain total of 2.29 inches.

Heavy Rain in LUCAS, IOWA
From 09-JUL-21 07:23:00 to 10-JUL-21 07:23:00 (CST-6)
Location: LUCAS
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

A 24 hour rain total of 3.18 inches.

Heavy Rain in POLK, IOWA
From 09-JUL-21 23:00:00 to 10-JUL-21 07:37:00 (CST-6)
Location: SAYLORVILLE
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Public report of 2.14 inches of rain since midnight, made via social media.

Hail in POLK, IOWA
From 09-JUL-21 13:02:00 to 09-JUL-21 13:02:00 (CST-6)
Location: LOVINGTON
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Report via mping app.

Hail in POLK, IOWA
From 09-JUL-21 13:02:00 to 09-JUL-21 13:02:00 (CST-6)
Location: CLIVE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Report via mping app.

Hail in POLK, IOWA
From 09-JUL-21 13:03:00 to 09-JUL-21 13:03:00 (CST-6)
Location: DODGE FLD ARPT
Magnitude: 2.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Baseball sized hail report relayed via WHO TV.

Hail in POLK, IOWA
From 09-JUL-21 13:05:00 to 09-JUL-21 13:05:00 (CST-6)
Location: URBANDALE
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

Hail in BOONE, IOWA
From 09-JUL-21 12:02:00 to 09-JUL-21 12:02:00 (CST-6)
Location: OGDEN
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in BOONE, IOWA
From 09-JUL-21 12:03:00 to 09-JUL-21 12:05:00 (CST-6)
Location: OGDEN
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail lasted about 2 minutes.

Hail in DALLAS, IOWA
From 09-JUL-21 12:29:00 to 09-JUL-21 12:29:00 (CST-6)
Location: WOODWARD
Magnitude: 3.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Report made via social media.

Thunderstorm Wind in ADAMS, IOWA
From 10-JUL-21 00:14:00 to 10-JUL-21 00:14:00 (CST-6)
Location: NODAWAY
Magnitude: 60.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Delayed report of 3 inch tree limbs broken and power poles broken.

Thunderstorm Wind in TAYLOR, IOWA
From 10-JUL-21 00:40:00 to 10-JUL-21 00:40:00 (CST-6)
Location: BEDFORD
Magnitude: 61.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

RWIS site near Bedford recorded a 61 knot gust.

Hail in POLK, IOWA
From 09-JUL-21 13:16:00 to 09-JUL-21 13:16:00 (CST-6)
Location: DES MOINES
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Half dollar sized hail at the state capitol.

Hail in POLK, IOWA
From 09-JUL-21 13:21:00 to 09-JUL-21 13:21:00 (CST-6)
Location: DES MOINES
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Golf balled sized hail at the state capitol.

Hail in BOONE, IOWA
From 09-JUL-21 12:29:00 to 09-JUL-21 12:29:00 (CST-6)
Location: MADRID
Magnitude: 2.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Time estimated via radar.

Hail in POLK, IOWA
From 09-JUL-21 13:01:00 to 09-JUL-21 13:01:00 (CST-6)
Location: POLK CITY
Magnitude: 2.00 
Crop damage: 0.00K
Reported by: Official NWS Observations

Golf ball to egg sized hail at the NWS office in Johnston. Minor damage to vehicles.

Heavy Rain in CLARKE, IOWA
From 09-JUL-21 06:00:00 to 10-JUL-21 06:00:00 (CST-6)
Location: OSCEOLA
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

A 24 hour rain total of 2.18 inches.

Heavy Rain in CASS, IOWA
From 09-JUL-21 06:00:00 to 10-JUL-21 06:00:00 (CST-6)
Location: ANITA MUNI ARPT
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

A 24 hour rain total of 2.90 inches.

Heavy Rain in WAYNE, IOWA
From 09-JUL-21 08:22:00 to 10-JUL-21 08:22:00 (CST-6)
Location: HUMESTON
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A 24 hour rain total of 2.67 inches.

Hail in POLK, IOWA
From 09-JUL-21 13:01:00 to 09-JUL-21 13:01:00 (CST-6)
Location: LOVINGTON
Magnitude: 2.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy Rain in MAHASKA, IOWA
From 09-JUL-21 09:16:00 to 10-JUL-21 09:16:00 (CST-6)
Location: OSKALOOSA
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A 24 hour rain total of 3.10 inches.

Hail in POLK, IOWA
From 09-JUL-21 13:08:00 to 09-JUL-21 13:08:00 (CST-6)
Location: ORALABOR
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

NWS Employee reports half dollar to golf ball sized hail.

Hail in BOONE, IOWA
From 09-JUL-21 12:14:00 to 09-JUL-21 12:14:00 (CST-6)
Location: LUTHER
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in BOONE, IOWA
From 09-JUL-21 12:15:00 to 09-JUL-21 12:15:00 (CST-6)
Location: BOONE
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in DALLAS, IOWA
From 09-JUL-21 12:38:00 to 09-JUL-21 12:38:00 (CST-6)
Location: MORAN
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager