sweetapricity/bridgedeck-noaa huggingface dataset:
Severe (D2) drought conditions continued into the first day of August across much of Sevier, Howard, and Hempstead Counties in Southwest Arkansas, although a couple of thunderstorm complexes that developed over much of Oklahoma spread east across the northern sections of Southwest Arkansas on July 30th, producing widespread rainfall amounts of one to two inches across these areas. This resulted in a one category improvement to moderate (D1) drought across the northern sections of Southwest Arkansas in the August 2nd issuance of the U.S. Drought Monitor, with the drought eliminated all-together by the middle part of the month as additional heavy rains fell across the area.

Drought in SEVIER, ARKANSAS
From 01-AUG-18 00:00:00 to 01-AUG-18 23:59:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Drought Monitor

Drought in HOWARD, ARKANSAS
From 01-AUG-18 00:00:00 to 01-AUG-18 23:59:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Drought Monitor

Drought in HEMPSTEAD, ARKANSAS
From 01-AUG-18 00:00:00 to 01-AUG-18 23:59:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Drought Monitor
A line of storms that developed across South Dakota, moved eastward into west central, central and east central Minnesota during the late afternoon, and evening hours. Several bow echo segments were indicated on radar, with one producing a tornado between Atwater and Grove City. A few trees and power lines were blown down as this line of storms continued to move eastward across Minnesota.
There were numerous measured wind gusts in the range of 45 to 55 mph as these storms moved across the state, including 55 mph at the St. Paul airport, 53 mph near Starbuck, and Granite Falls, 51 mph near Clearwater, 49 mph near Clara City, 48 mph at the Minneapolis, St. Paul International Airport, and 47 mph at the Madison airport.

Tornado in MEEKER, MINNESOTA
From 03-AUG-18 17:36:00 to 03-AUG-18 17:45:00 (CST-6)
Location: GROVE CITY
Tornado F-scale: EF0
Property damage: 100.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

This is the continuation of the same EF0 tornado that tracked across Kandiyohi county, and entered Meeker county. This tornado tracked an additional 9.5 miles east along Highway 12, through Grove City, to just northwest of Litchfield.  Pockets of tree damage, an overturned trailer, and some other minor structural damage to sheds and pole barns resulted. Straight line wind damage, mostly to trees, was found south of the tornado
track and Highway 12. Maximum winds were estimated at 80 mph, with a width of 300 yards.

Thunderstorm Wind in SWIFT, MINNESOTA
From 03-AUG-18 17:01:00 to 03-AUG-18 17:01:00 (CST-6)
Location: SWIFT FALLS
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

Several trees were blown down west of Sunburg.

Thunderstorm Wind in MEEKER, MINNESOTA
From 03-AUG-18 18:02:00 to 03-AUG-18 18:02:00 (CST-6)
Location: FOREST CITY
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Several trees were blown down near Forest City.

Thunderstorm Wind in STEARNS, MINNESOTA
From 03-AUG-18 18:15:00 to 03-AUG-18 18:15:00 (CST-6)
Location: FAIRHAVEN
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A large tree fell on a power line near Fairhaven.

Tornado in KANDIYOHI, MINNESOTA
From 03-AUG-18 17:34:00 to 03-AUG-18 17:36:00 (CST-6)
Location: ATWATER
Tornado F-scale: EF0
Property damage: 100.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A NWS storm survey indicated an EF0 Tornado began near Atwater and tracked east for 1.6 miles along Highway 12, and entered Meeker County. Multiple trees and power lines were blown down in the city of Atwater. Some of the trees landed on houses and caused structural damage.
Thunderstorms along the leading edge of a fairly disorganized mesoscale convective system produced gusty winds and isolated tree damage. The storms occurred well ahead of a cold front that extended from the Great Lakes to the southern Plains. A broad 500 mb trough extended from the Great Lakes southward through the Mississippi Valley.

Thunderstorm Wind in MUHLENBERG, KENTUCKY
From 08-AUG-18 02:53:00 to 08-AUG-18 02:53:00 (CST-6)
Location: GREENVILLE
Magnitude: 52.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Tree limbs were blown down on Highway 181.
Thunderstorms brought down trees in Saginaw and Tuscola Counties.

Thunderstorm Wind in SAGINAW, MICHIGAN
From 26-AUG-18 23:24:00 to 26-AUG-18 23:24:00 (EST-5)
Location: ST CHARLES
Magnitude: 54.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Numerous trees and power lines reported down across Saginaw County.

Thunderstorm Wind in TUSCOLA, MICHIGAN
From 26-AUG-18 23:45:00 to 26-AUG-18 23:45:00 (EST-5)
Location: VASSAR
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Several trees reported down around Vassar.

Thunderstorm Wind in TUSCOLA, MICHIGAN
From 27-AUG-18 00:27:00 to 27-AUG-18 00:27:00 (EST-5)
Location: KINGSTON
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Several trees reported down around the Kingston Area.
Thunderstorms moving through Saginaw Bay produced with gusts to 60 mph.

Marine Thunderstorm Wind in INNER SAGINAW BAY SW OF POINT AU GRES TO BAY PORT MI, LAKE HURON
From 28-AUG-18 20:30:00 to 28-AUG-18 20:30:00 (EST-5)
Location: SAGINAW BAY LIGHT
Magnitude: 52.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: C-MAN Station

Marine Thunderstorm Wind in PORT AUSTIN TO HARBOR BEACH MI, LAKE HURON
From 28-AUG-18 21:30:00 to 28-AUG-18 21:30:00 (EST-5)
Location: HARBOR BEACH
Magnitude: 38.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: C-MAN Station

Marine Thunderstorm Wind in OUTER SAGINAW BAY SW OF ALABASTER TO PORT AUSTIN MI TO INNER SAGINAW BAY, LAKE HURON
From 28-AUG-18 20:20:00 to 28-AUG-18 20:20:00 (EST-5)
Location: POINT AU GRES
Magnitude: 40.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: C-MAN Station
Stalled frontal boundary remained the focus for thunderstorms into the 8th with marginal shear profiles and sufficient instability allowing for a few strong to severe storms.

Thunderstorm Wind in HENRY, OHIO
From 08-AUG-18 15:15:00 to 08-AUG-18 15:16:00 (EST-5)
Location: DESHLER
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter reported a large, partially rotten tree limb, approximately one foot in diameter, was snapped off near the intersection of SR 18 and Oak Street.

Thunderstorm Wind in HENRY, OHIO
From 08-AUG-18 15:15:00 to 08-AUG-18 15:16:00 (EST-5)
Location: DESHLER
Magnitude: 55.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter reported tree branches ranging from six to twelve inches in diameter broken off trees near the intersection of SR 18 and Vine St.
Stalled frontal boundary remained the focus for thunderstorms into the 8th with marginal shear profiles and sufficient instability allowing for a few strong to severe storms.

Thunderstorm Wind in WHITLEY, INDIANA
From 08-AUG-18 13:15:00 to 08-AUG-18 13:16:00 (EST-5)
Location: TRI LAKES
Magnitude: 55.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

An off duty NWS employee reported a large tree, between three and four feet in diameter, was blown down.

Thunderstorm Wind in HUNTINGTON, INDIANA
From 08-AUG-18 16:25:00 to 08-AUG-18 16:26:00 (EST-5)
Location: MONUMENT CITY
Magnitude: 60.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Emergency management officials reported numerous healthy trees, as well as tree limbs up to six inches in diameter were blown down on SR 105, between County Road 250 South and the Salamonie Reservoir.
A stalled frontal boundary provided the focus for thunderstorm development with upper level support aiding in 30 to 40 knots of shear. Both supercells and bowing segments developed. Isolated damage was reported with spotters monitoring well defined wall cloud and funnel cloud in Whitley county.

Lightning in ELKHART, INDIANA
From 07-AUG-18 00:15:00 to 07-AUG-18 00:16:00 (EST-5)
Location: MIDDLEBURY
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Local media reported lightning struck a barn, causing a fire. The fire killed 2 goats and 3 horses. Owners of the animals attempted to rescue them with 2 adult males suffering minor burns.

Thunderstorm Wind in STEUBEN, INDIANA
From 07-AUG-18 16:08:00 to 07-AUG-18 16:09:00 (EST-5)
Location: PLEASANT LAKE
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Emergency management officials reported a few smaller tree limbs were blown down east of Pleasant Lake along Bellefontaine Rd. A wall cloud was observed in the area.
A frontal boundary focused thunderstorm activity across parts of the area. Instability and shear was less than past days, but mid level dry air was in place to aid in damaging wind potential.

Thunderstorm Wind in ST. JOSEPH, MICHIGAN
From 09-AUG-18 16:50:00 to 09-AUG-18 16:51:00 (EST-5)
Location: WHITE PIGEON
Magnitude: 55.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotters reported several large tree limbs were blown down.

Thunderstorm Wind in CASS, MICHIGAN
From 09-AUG-18 17:05:00 to 09-AUG-18 17:06:00 (EST-5)
Location: VANDALIA
Magnitude: 55.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Local media reported several trees, tree limbs and branches were blown down in and around Cassopolis and Vandalia.
A line of thunderstorms moved across western Wisconsin during the late afternoon and evening of August 1st. Some of these storms dropped penny sized hail near Montana (Buffalo County), on the south side of La Crosse (La Crosse County) and in Prairie du Chien (Crawford County).

Hail in BUFFALO, WISCONSIN
From 01-AUG-18 16:22:00 to 01-AUG-18 16:22:00 (CST-6)
Location: GILMANTON
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in LA CROSSE, WISCONSIN
From 01-AUG-18 18:20:00 to 01-AUG-18 18:20:00 (CST-6)
Location: LA CROSSE
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in CRAWFORD, WISCONSIN
From 01-AUG-18 20:55:00 to 01-AUG-18 20:55:00 (CST-6)
Location: PRAIRIE DU CHIEN
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public
Numerous showers and thunderstorms moved from west to east across Middle Tennessee during the day on August 9. Two reports of wind damage were received in Coffee County.

Thunderstorm Wind in COFFEE, TENNESSEE
From 09-AUG-18 12:02:00 to 09-AUG-18 12:02:00 (CST-6)
Location: TULLAHOMA
Magnitude: 43.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Social Media

A Twitter tSpotter report and photo indicated a tree was split in half on 12 Oaks Road and large tree limbs blown down on Huntington Place in Tullahoma.

Thunderstorm Wind in COFFEE, TENNESSEE
From 09-AUG-18 12:28:00 to 09-AUG-18 12:28:00 (CST-6)
Location: MANCHESTER
Magnitude: 43.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Social Media

A Twitter tSpotter report and photo showed a tree was blown down on Ingram Street in Manchester.
Widely scattered showers and thunderstorms developed across Middle Tennessee during the afternoon hours on August 16. Two reports of wind damage were received in Wilson County.

Thunderstorm Wind in WILSON, TENNESSEE
From 16-AUG-18 13:40:00 to 16-AUG-18 13:40:00 (CST-6)
Location: DOAKS XRDS
Magnitude: 45.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A tree was blown down into the road at 1108 Trammel Lane.

Thunderstorm Wind in WILSON, TENNESSEE
From 16-AUG-18 13:34:00 to 16-AUG-18 13:34:00 (CST-6)
Location: LEBANON
Magnitude: 45.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Several awnings and tent coverings were blown down at the Wilson County Fairgrounds.
Thunderstorms moving through Saginaw Bay produced wind gusts around 50 knots.

Marine Thunderstorm Wind in OUTER SAGINAW BAY SW OF ALABASTER TO PORT AUSTIN MI TO INNER SAGINAW BAY, LAKE HURON
From 02-AUG-18 15:10:00 to 02-AUG-18 15:10:00 (EST-5)
Location: GRAVELLY SHOALS LIGHT
Magnitude: 35.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: C-MAN Station

Marine Thunderstorm Wind in INNER SAGINAW BAY SW OF POINT AU GRES TO BAY PORT MI, LAKE HURON
From 02-AUG-18 15:20:00 to 02-AUG-18 15:20:00 (EST-5)
Location: SAGINAW BAY LIGHT
Magnitude: 51.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: C-MAN Station

Marine Thunderstorm Wind in INNER SAGINAW BAY SW OF POINT AU GRES TO BAY PORT MI, LAKE HURON
From 02-AUG-18 15:30:00 to 02-AUG-18 15:30:00 (EST-5)
Location: BAY PORT
Magnitude: 36.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: C-MAN Station

Marine Thunderstorm Wind in INNER SAGINAW BAY SW OF POINT AU GRES TO BAY PORT MI, LAKE HURON
From 02-AUG-18 15:00:00 to 02-AUG-18 15:00:00 (EST-5)
Location: SAGINAW BAY LIGHT
Magnitude: 36.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: C-MAN Station
Increasing SW steering flow and moisture fueled scattered sea breeze storms. Boundary collisions near the east coast sea breeze front triggered stronger storm growth in the afternoon and early evening as activity moved offshore.

Marine Thunderstorm Wind in ST AUGUSTINE TO FLAGLER BEACH FL OUT 20NM, ATLANTIC SOUTH
From 09-AUG-18 15:04:00 to 09-AUG-18 15:04:00 (EST-5)
Location: BEVERLY BEACH
Magnitude: 39.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Gusts of 40-45 mph were reported across the eastern tier of the county.
One severe storm developed between Alexandria, and St. Cloud, Minnesota during the morning of Sunday, August 26th. This storm moved eastward a produced a swath of large hail, up to golf ball size, from near Gilman, eastward through, Milaca, and Braham.
Another cluster of storms developed behind this main storm and produced large hail from Princeton, eastward to Stacy, and Chisago City.

Hail in MILLE LACS, MINNESOTA
From 26-AUG-18 04:35:00 to 26-AUG-18 04:35:00 (CST-6)
Location: PRINCETON
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in ISANTI, MINNESOTA
From 26-AUG-18 04:41:00 to 26-AUG-18 04:41:00 (CST-6)
Location: SPENCER BROOK
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in CHISAGO, MINNESOTA
From 26-AUG-18 05:30:00 to 26-AUG-18 05:30:00 (CST-6)
Location: CHISAGO CITY
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Hail in CHISAGO, MINNESOTA
From 26-AUG-18 05:22:00 to 26-AUG-18 05:22:00 (CST-6)
Location: STACY
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in CHISAGO, MINNESOTA
From 26-AUG-18 05:32:00 to 26-AUG-18 05:32:00 (CST-6)
Location: CHISAGO CITY
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Lightning in ANOKA, MINNESOTA
From 26-AUG-18 05:40:00 to 26-AUG-18 05:40:00 (CST-6)
Location: LINWOOD
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A structure was struck by lightning, south of Linwood.

Hail in BENTON, MINNESOTA
From 26-AUG-18 02:50:00 to 26-AUG-18 02:50:00 (CST-6)
Location: GILMAN
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in MILLE LACS, MINNESOTA
From 26-AUG-18 03:12:00 to 26-AUG-18 03:22:00 (CST-6)
Location: PEASE
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A swath of large hail, up to golf ball size, occurred near Pease, and east of Pease near the Isanti County line.

Hail in ISANTI, MINNESOTA
From 26-AUG-18 03:22:00 to 26-AUG-18 03:44:00 (CST-6)
Location: CARMODY
Magnitude: 1.75 
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Public

A swath of large hail, up to golf ball size, continued into Isanti County from west of Day, to the far northeast corner near Braham. Vehicles were reported damage from the hail stones.
A cluster of storms that produced large hail in east central Minnesota, continued to move eastward into west central Wisconsin. These storms continued to produce large hail from Star Prairie to Forest in northern St. Croix County.

Hail in ST. CROIX, WISCONSIN
From 26-AUG-18 06:16:00 to 26-AUG-18 06:16:00 (CST-6)
Location: NEW RICHMOND ARPT
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Hail in ST. CROIX, WISCONSIN
From 26-AUG-18 06:25:00 to 26-AUG-18 06:25:00 (CST-6)
Location: CYLON
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter
Several storms developed after midnight on Monday, August 27th in Dakota County. One of these storms produced quarter size hail near Farmington.

Hail in DAKOTA, MINNESOTA
From 26-AUG-18 23:55:00 to 26-AUG-18 23:55:00 (CST-6)
Location: FARMINGTON
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter
Thunderstorm development created heavy precipitation over the Pass, South Oak, Yellowstone, and North Abeyta Creeks. The Huerfano County Emergency Manager provided a delayed report of evidence for flash flooding over County Road 572 near Pass Creek.

Flash Flood in HUERFANO, COLORADO
From 01-AUG-18 16:55:00 to 01-AUG-18 17:55:00 (MST-7)
Location: RED WING
Flood cause: Heavy Rain / Burn Area
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm development created heavy precipitation over the Pass, South Oak, Yellowstone, and North Abeyta Creeks. The Huerfano County Emergency Manager provided a delayed report of evidence for flash flooding over County Road 572 near Pass Creek.
Showers and thunderstorms developed in a warm and humid environment ahead of an approaching cold front, resulting in isolated flash flooding across portions of urban northeast New Jersey. These storms brought 1-2 inches of rain to the region in a matter of hours, with a cooperative observer in Harrison, NJ recording 1.79 inches of rain during the event.

Flash Flood in HUDSON, NEW JERSEY
From 17-AUG-18 23:28:00 to 17-AUG-18 23:58:00 (EST-5)
Location: EAST NEWARK
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Cars were stuck in flood waters with water rescues underway on Frank E Rodgers Boulevard at the PATH train station in Harrison.
Scattered thunderstorms in advance of a frontal boundary produced heavy rain which caused flash flooding across portions of southeast Virginia.

Flash Flood in NORFOLK (C), VIRGINIA
From 11-AUG-18 17:05:00 to 11-AUG-18 19:30:00 (EST-5)
Location: NORFOLK
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Neighborhood roadways were flooded. Rainfall total of 2.19 inches was measured in 45 minutes.

Flash Flood in NORFOLK (C), VIRGINIA
From 11-AUG-18 17:23:00 to 11-AUG-18 19:30:00 (EST-5)
Location: NORFOLK
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Colley Avenue was closed due to flooding at the underpass. One vehicle was caught in the flood waters.
Thunderstorm development created heavy precipitation over Pass Creek. The Huerfano County Emergency Manager provided a delayed report of evidence for flash flooding over County Road 572 near Pass Creek.

Flash Flood in HUERFANO, COLORADO
From 14-AUG-18 18:24:00 to 14-AUG-18 19:24:00 (MST-7)
Location: RED WING
Flood cause: Heavy Rain / Burn Area
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Thunderstorm development created heavy precipitation over Pass Creek. The Huerfano County Emergency Manager provided a delayed report of evidence for flash flooding over County Road 572 near Pass Creek.
Isolated severe thunderstorm associated with a trough of low pressure produced damaging winds across portions of central Virginia.

Thunderstorm Wind in PRINCE GEORGE, VIRGINIA
From 12-AUG-18 17:28:00 to 12-AUG-18 17:28:00 (EST-5)
Location: BURROWSVILLE
Magnitude: 50.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Trees were downed along James River Drive (Route 10).
On an otherwise quiet, overcast day, a lone funnel cloud report was relayed from the Mason City area. Environmentally, the setup was not extremely favorable for funnel clouds with lifted condensation levels at or about 1000 m, little to no convection, nor any large scale boundaries present.

Funnel Cloud in CERRO GORDO, IOWA
From 18-AUG-18 17:56:00 to 18-AUG-18 17:56:00 (CST-6)
Location: (MCW)MASON CITY MUNI
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Public reported a funnel cloud in the Mason City area.
Synoptically speaking, widespread severe weather potential was not in the cards for the Iowa area with a fairly stationary boundary well to the south and little to speak of with regards to surface features. That said, elevated storms were possible across southern Iowa with low level jet initiated storms each of the very early morning hours of August 31st and then again during the evening hours. The initial early morning round propagated slowly northward after growing from storms in northeast Kansas, while the evening round initiated across southwest Iowa.
Environmentally, there was some support for at least brief organization with effective bulk shear in excess of 30 to 40 kts and MUCAPE values in excess of 2000 to 3000 J/kg during both events. When all was said and done, only a small handful of hail reports were received, with the large being 2 inch in diameter.

Hail in TAYLOR, IOWA
From 31-AUG-18 03:15:00 to 31-AUG-18 03:15:00 (CST-6)
Location: BEDFORD
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotter reported quarter sized hail along with periods of heavy rainfall including 1.2 inches of rain in about 30 minutes.

Hail in CASS, IOWA
From 31-AUG-18 21:21:00 to 31-AUG-18 21:21:00 (CST-6)
Location: MARNE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotter reported a few hail stones quarter in size, along with a lot of pea sized hail.

Hail in CASS, IOWA
From 31-AUG-18 21:27:00 to 31-AUG-18 21:27:00 (CST-6)
Location: MARNE
Magnitude: 2.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotter reported ping pong ball sized hail.

Hail in JASPER, IOWA
From 31-AUG-18 22:34:00 to 31-AUG-18 22:34:00 (CST-6)
Location: LYNNVILLE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Public reported quarter sized hail.

Hail in POLK, IOWA
From 31-AUG-18 07:17:00 to 31-AUG-18 07:17:00 (CST-6)
Location: ELKHART
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter