On the afternoon of the 25th, a cold front progressed into portions of central and eastern Nebraska and eventually stalled out in eastern Nebraska.  During the evening hours storms that initiated earlier in the day in western Nebraska continued to make their way across Nebraska and into Iowa and produced a number of high wind, damaging wind, and hail reports.  Prior to the main line, a severe storm fired up in northern Iowa in Emmet and produced near severe hail and severe winds. After the main line pushed through in the overnight hours, a stalled front in northern Missouri aided in ushering in another round of heavy rainfall across southern Iowa, where reports upwards of 4 plus inches were reported.

Thunderstorm Wind in EMMET, IOWA
From 25-MAY-16 23:56:00 to 25-MAY-16 23:56:00 (CST-6)
Location: ESTHERVILLE ARPT
Magnitude: 67.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Estherville Municipal airport ASOS station reported peak wind of 67 kts.

Hail in PALO ALTO, IOWA
From 26-MAY-16 00:14:00 to 26-MAY-16 00:14:00 (CST-6)
Location: EMMETSBURG
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotter reported dime to nickel sized hail.

Thunderstorm Wind in CRAWFORD, IOWA
From 26-MAY-16 01:10:00 to 26-MAY-16 01:10:00 (CST-6)
Location: DENISON MUNI ARPT
Magnitude: 50.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Denison airport AWOS station reported peak wind measured at 50 kts.

Hail in WARREN, IOWA
From 26-MAY-16 01:24:00 to 26-MAY-16 01:24:00 (CST-6)
Location: CUMMING
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Public reported nickel sized hail.

Thunderstorm Wind in CARROLL, IOWA
From 26-MAY-16 01:30:00 to 26-MAY-16 01:30:00 (CST-6)
Location: CARROLL
Magnitude: 50.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Mesonet station 1 mile WNW of Carroll reported a 50 kt wind gust.

Thunderstorm Wind in CARROLL, IOWA
From 26-MAY-16 01:50:00 to 26-MAY-16 01:50:00 (CST-6)
Location: GLIDDEN
Magnitude: 61.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotter reported several small tree limbs down with some 5 to 6 inch diameter branches as well.  Pea sized hail also observed.

Thunderstorm Wind in GRUNDY, IOWA
From 26-MAY-16 03:20:00 to 26-MAY-16 03:20:00 (CST-6)
Location: REINBECK
Magnitude: 56.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotter reported winds of at least 60 mph that blew down half the trees in their front yard.  Time radar estimated.

Heavy Rain in CASS, IOWA
From 26-MAY-16 14:30:00 to 26-MAY-16 19:30:00 (CST-6)
Location: ATLANTIC
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Mesonet station 1 mile east of Atlantic reported heavy rainfall of 4.34 inches thus far this afternoon and evening.

Hail in EMMET, IOWA
From 25-MAY-16 21:20:00 to 25-MAY-16 21:20:00 (CST-6)
Location: ESTHERVILLE
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Law Enforcement reported penny to dime sized hail.

Heavy Rain in GUTHRIE, IOWA
From 26-MAY-16 15:30:00 to 26-MAY-16 20:15:00 (CST-6)
Location: MONTEITH
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Mesonet station in Panora reported heavy rainfall of 3.55 inches thus far this afternoon and evening.

Lightning in WARREN, IOWA
From 25-MAY-16 03:30:00 to 25-MAY-16 03:30:00 (CST-6)
Location: SPRING HILL
Property damage: 100.00K
Crop damage: 0.00K
Reported by: Newspaper

WHO Des Moines reported a fire at a Warren County pet cemetery and funeral home in the early morning hours.  Given the building was under construction with no current electrical, it was suspected that an overnight/early morning storm sparked the blaze with lightning.  The call for the fire came in around 5 am and it is estimated that the lightning strike was around 4:30 am based on radar data.
The building fire drew crews from North Warren, Carlisle, and Norwalk.

Hail in EMMET, IOWA
From 25-MAY-16 21:32:00 to 25-MAY-16 21:32:00 (CST-6)
Location: DOLLIVER
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Emmet County Emergency Manager relayed a report of nickel sized hail west of Dolliver.

Hail in EMMET, IOWA
From 25-MAY-16 21:34:00 to 25-MAY-16 21:34:00 (CST-6)
Location: DOLLIVER
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Law Enforcement reported nickel sized hail.

Thunderstorm Wind in CRAWFORD, IOWA
From 26-MAY-16 01:15:00 to 26-MAY-16 01:15:00 (CST-6)
Location: DENISON MUNI ARPT
Magnitude: 76.00 MG
Property damage: 15.00K
Crop damage: 0.00K
Reported by: AWOS

Denison Airport AWOS reported peak wind gust of 76 kts.  Law Enforcement also reported numerous tree limbs down.

Thunderstorm Wind in EMMET, IOWA
From 26-MAY-16 00:05:00 to 26-MAY-16 00:05:00 (CST-6)
Location: ESTHERVILLE
Magnitude: 60.00 EG
Property damage: 15.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Law Enforcement and Emergency Management reported several 3 to 5 inches tree limbs down throughout the town of Estherville.  Some tree limbs were blocking roads.

Thunderstorm Wind in CRAWFORD, IOWA
From 26-MAY-16 01:25:00 to 26-MAY-16 01:25:00 (CST-6)
Location: WESTSIDE
Magnitude: 65.00 EG
Property damage: 100.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotter reported strong winds that derailed several train cars near Westside.

Hail in DALLAS, IOWA
From 26-MAY-16 01:34:00 to 26-MAY-16 01:34:00 (CST-6)
Location: MINBURN
Magnitude: 1.25 
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Minburn Fire Department reported half dollar sized hail about 1.5 miles SW of town.

Thunderstorm Wind in CARROLL, IOWA
From 26-MAY-16 01:35:00 to 26-MAY-16 01:35:00 (CST-6)
Location: MANNING
Magnitude: 52.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Law Enforcement reported power outages in the Manning area.

Hail in JASPER, IOWA
From 26-MAY-16 02:00:00 to 26-MAY-16 02:00:00 (CST-6)
Location: VALERIA
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Public reported nickel sized hail along with winds estimated at 55 mph and small tree limbs down in Valeria.

Thunderstorm Wind in STORY, IOWA
From 26-MAY-16 02:22:00 to 26-MAY-16 02:22:00 (CST-6)
Location: MAXWELL
Magnitude: 61.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Fire Department reported 6 inch diameter tree snapped near the base as well as a 12 inch tree limb downed onto a fence.

Thunderstorm Wind in BOONE, IOWA
From 26-MAY-16 02:25:00 to 26-MAY-16 02:25:00 (CST-6)
Location: BOONE
Magnitude: 61.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Emergency Manager reported eight to ten inch diameter tree down in Boone.

Thunderstorm Wind in STORY, IOWA
From 26-MAY-16 02:40:00 to 26-MAY-16 02:40:00 (CST-6)
Location: MC CALLSBURG
Magnitude: 61.00 EG
Property damage: 30.00K
Crop damage: 0.00K
Reported by: Public

Public reported hoop building destroyed and a large tree limb snapped and fell onto the house roof.  Additional damage to a shed as well.  Time radar estimated.

Thunderstorm Wind in STORY, IOWA
From 26-MAY-16 02:48:00 to 26-MAY-16 02:48:00 (CST-6)
Location: ZEARING
Magnitude: 56.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: COOP Observer

Coop observer reported several big tree limbs down.

Thunderstorm Wind in MARSHALL, IOWA
From 26-MAY-16 03:00:00 to 26-MAY-16 03:00:00 (CST-6)
Location: ALBION
Magnitude: 65.00 EG
Property damage: 20.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotter reported large section of roof removed from a home.

Thunderstorm Wind in MARSHALL, IOWA
From 26-MAY-16 03:00:00 to 26-MAY-16 03:00:00 (CST-6)
Location: MARSHALLTOWN ARPT
Magnitude: 61.00 EG
Property damage: 15.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Emergency Manager reported Morton building damaged.  Time estimated by radar.

Thunderstorm Wind in MARSHALL, IOWA
From 26-MAY-16 03:04:00 to 26-MAY-16 03:04:00 (CST-6)
Location: MARSHALLTOWN ARPT
Magnitude: 68.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Marshalltown ASOS reported peak wind gust of 68 kts.

Thunderstorm Wind in BLACK HAWK, IOWA
From 26-MAY-16 03:17:00 to 26-MAY-16 03:17:00 (CST-6)
Location: VOORHIES
Magnitude: 58.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Public reported anemometer measured wind gust of 58 kts.  Reported via social media.

Flash Flood in CASS, IOWA
From 26-MAY-16 18:14:00 to 26-MAY-16 21:30:00 (CST-6)
Location: ATLANTIC
Flood cause: Heavy Rain
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Department of Highways

Iowa DOT advised flash flooding covered all lanes of US Highway 6 from mile markers 53 to 54.5 in Atlantic.  Road was blocked in both directions due to the water over the road.

Flash Flood in CASS, IOWA
From 26-MAY-16 18:35:00 to 26-MAY-16 21:30:00 (CST-6)
Location: ATLANTIC ARPT
Flood cause: Heavy Rain
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Newspaper

Atlantic News Telegraph Newspaper advised several streets in Atlantic were closed due to flash flooding, including portions of US Highway 6 which had over 6 inches of flowing water.

Hail in EMMET, IOWA
From 25-MAY-16 21:28:00 to 25-MAY-16 21:28:00 (CST-6)
Location: ESTHERVILLE ARPT
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Public reported nickel sized hail via social media.

Thunderstorm Wind in CARROLL, IOWA
From 26-MAY-16 01:32:00 to 26-MAY-16 01:32:00 (CST-6)
Location: ARCADIA
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Public reported 60 mph winds and quarter sized hail in Arcadia.  Time estimated.

Hail in WORTH, IOWA
From 26-MAY-16 02:00:00 to 26-MAY-16 02:00:00 (CST-6)
Location: GRAFTON
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotter reported penny to quarter sized hail at their residence.

Thunderstorm Wind in EMMET, IOWA
From 26-MAY-16 00:01:00 to 26-MAY-16 00:01:00 (CST-6)
Location: ESTHERVILLE ARPT
Magnitude: 54.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

An Iowa DOT RWIS Mesonet station 1 mile east of Estherville reported a peak wind gust of 54 kts.

Thunderstorm Wind in BLACK HAWK, IOWA
From 26-MAY-16 03:29:00 to 26-MAY-16 03:29:00 (CST-6)
Location: EVANSDALE
Magnitude: 56.00 EG
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotter reported a semi trailer flipped over and boat trailer picked up and knocked over in the parking lot of a Waterloo casino.